I pursued the link Jerry Springer kindly provided in his recent e-mail on the wisdom of choosing an RV. The link enabled me to explore the NTSB Accident Synopses, and I copied all the synopses in the previous four years (Oct 1992 - Sep 96) that pertained to RVs. I did this using a textual search on "RV." It was enlightening, to say the least. I wonder if we builders fly often enough to maintain our currency as pilots. Reading through these accident synopses makes me wonder if we allow ourselves to become expert builders at the expense of our flying skills. It is impossible to infer from reading alone whether RVs have more or fewer materiel failures than other types of aircraft, whether they are more or less accident prone from an operator's point of view, or even if they have a higher or lower accident rate. The vast majority of mishaps described in the synopses that follow were avoidable. This may seem trite, since the same is true of virtually every large collection of accident data, but it suggests that our pilot proficiency may play a greater role in homebuilt accidents than in the rest of the general aviation community. Van's articles on pilot proficiency in past RV Newsletters try to convey pretty much the same emphasis: we're not flying enough. Unfortunately, most of us are constrained by lack of pecuniary resources or what we may perceive as lack of spare time. One of the reasons many of us embark on the homebuilding adventure is to save money over the cost of an old, lower performance, GA aircraft. Moreover, we don't want to take forever building our RVs so we have to stick with it. I think it's crucial that we don't stick with it to the point of excluding proficiency flights from our personal agenda. I certainly don't mean to lecture; I'm no smarter than anyone else about this. I'm simply impressed by MY need to stay current as a pilot, even while I'm absorbed by the project. At the risk of being tedious and boring everyone with lengthy text, I have attached the last four years of NTSB Accident Synopses on RV accidents. There are three such accidents not included here because no link was provided in the database. I trust that you will find them as absorbing as I did. Keep flying, boys and girls. Jack Abell RV-6A N333JA (Reserved) NTSB Identification: LAX93LA017 For details, refer to NTSB microfiche number 48063A Accident occurred OCT-22-92 at LOMPOC, CA Aircraft: PASPORELLO, J.F. RV-3, registration: N65JP Injuries: 1 Fatal. THE PILOT RECENTLY PURCHASED THE EXPERIMENTAL HOME BUILT AIRPLANE. THE PILOT INDICATED TO AN ACQUAINTANCE THAT HE PLANNED TO FLY OVER THE WITNESS' HOUSE AND SHOW HIM HIS AIRPLANE. THE WITNESS REPORTED THAT HE OBSERVED THE AIRPLANE PERFORM A 120 DEGREE CLIMBING TURN WHICH WAS FOLLOWED BY AN ABRUPT LEFT CLIMBING TURN, AND THEN A FIRE WAS OBSERVED. OTHER WITNESSES REPORTED SEEING A FIRE AROUND BOTH WINGS, AND THEN THE AIRPLANE DESCENDED AT A HIGH RATE OF SPEED UNTIL COLLIDING WITH THE HARD GROUND IN A NOSE LOW PITCH ATTITUDE. A FIRE IMMEDIATELY ERUPTED WHICH FURTHER DESTROYED THE FRAGMENTED STRUCTURE. THE EVENT WHICH PRECIPITATED THE IN FLIGHT FIRE WAS NOT DETERMINED. THE AIRPLANE'S SLIDE TYPE CANOPY, WHICH SMELLED OF SMOKE, WAS FOUND ABOUT 1 MILE FROM THE CRASH SITE. Probable Cause THE FAILURE OF AN UNIDENTIFIED AIRFRAME OR COMPONENT SYSTEM FOR UNKNOWN REASONS AND THE RESULTING INFLIGHT FIRE. NTSB Identification: ATL93LA078 For details, refer to NTSB Imaging System Accident occurred APR-19-93 at KINGSTON, TN Aircraft: DOBBS VAN'S AIRCRAFT RV-6, registration: N316DD Injuries: 2 Fatal. A PILOT WHO WAS IN AN AIRPLANE ON THE GROUND AWAITING TAKEOFF SAW THE AIRPLANE ON AN ANGLING BASE FOR RUNWAY 23. HE DESCRIBED THE AIRPLANE AS BEING CLOSE IN, IN A LEFT TURN FROM THE BASE LEG TO THE FINAL APPROACH COURSE. HE STATED THAT THE AIRPLANE STALLED AND ENTERED A SPIN. AFTERWARDS HE SAW WATER FROM THE LAKE, OFF THE APPROACH END OF 23, SPLASH UP. THE AIRPORT MANAGER REPORTED THAT THE WIND WAS GUSTY AT THE TIME OF THE ACCIDENT, ABOUT 15 KNOTS WITH GUSTS OF 20 TO 25 KNOTS. AN ENTRY IN THE AIRCRAFT LOG REPORTED THE STALL CHARACTERISTICS AS SLIGHT BUFFET, THEN A LEFT WING DROP AT ABOUT 45 KNOTS IAS, FLAPS EXTENDED OR RETRACTED. Probable Cause The pilot's inadequate compensation for gusty wind conditions. A factor was the wind gust of 20-25 knots. NTSB Identification: NYC93LA091 For details, refer to NTSB microfiche number 50478A Accident occurred APR-24-93 at DANVILLE, VA Aircraft: HOMER DAVIS RV4, registration: N22DD Injuries: 1 Uninjured. AFTER COMPLETING A 360 DEGREE TURN AND RETURNING TO LEVEL FLIGHT THE AIRCRAFT'S ENGINE LOST POWER. THE PILOT ELECTED TO MAKE A FORCED LANDING IN A FIELD. THE AIRPLANE TOUCHED DOWN IN A FIELD AND STRUCK A TREE. EXAMINATION OF THE CARBURETOR REVEALED THAT THE NEEDLE VALVE WAS INTERMITTENTLY STICKING ON THE SEAT. FURTHER EXAMINATION REVEALED THAT THE SPRING WIRE CLIP ON THE NEEDLE VALVE WAS NOT STRONG ENOUGH TO OPEN UP THE VALVE WHEN IT GOT STUCK. Probable Cause THE LOSS OF ENGINE POWER DUE TO A STUCK CARBURETOR NEEDLE VALVE; SUBSEQUENT FORCED LANDING IN UNSUITABLE TERRAIN, AND IMPACT WITH A TREE. NTSB Identification: NYC93LA095 For details, refer to NTSB microfiche number 50488A Accident occurred APR-30-93 at FARMINGDALE, NJ Aircraft: MACPHEE RV6, registration: N726WM Injuries: 1 Uninjured. THE PILOT WAS STARTING THE ENGINE TO PREPARE FOR FLIGHT. HE PLACED THE THROTTLE IN THE FULL FORWARD POSITION DURING THE START ATTEMPT. THE ENGINE STARTED AND BECAUSE THE THROTTLE WAS STILL IN THE FORWARD POSITION, IT DEVELOPED HIGH POWER. THE AIRPLANE LURCHED FORWARD AND THE PROPELLER STRUCK THE RAMP. AFTER THIS OCCURRED, THE TAIL "SLAMMED" ONTO THE TAILWHEEL AND DAMAGED THE FUSELAGE. Probable Cause THE PILOT'S IMPROPER STARTING PROCEDURE, WHICH CAUSED THE AIRPLANE TO NOSE DOWN. NTSB Identification: LAX93LA201 For details, refer to NTSB microfiche number 51125A Accident occurred MAY-05-93 at TRINITY CENTER, CA Aircraft: T.R. BRISTOL RV-6, registration: N15TP Injuries: 1 Minor, 1 Uninjured. THE PILOT TOLD A FAA SAFETY INSPECTOR THAT HE LIFTED OFF THE GROUND TOO SOON, CAUGHT A GUST OF WIND, DRIFTED OFF THE SIDE OF THE RUNWAY AND HIT SOME BRUSH WHILE STILL AIRBORNE. THE PILOT ESTIMATED THE WINDS AT 4-8 KTS. THE PILOT'S WIFE SAID THAT THERE WAS A GUST OF WIND, AND SHORTLY AFTER TAKEOFF, HER HUSBAND COULD NOT CONTROL THE DIRECTION OF THE AIRPLANE. THE PILOT TOLD THE FAA THAT THERE WAS NO MECHANICAL MALFUNCTION, JUST HIS TECHNIQUE. Probable Cause THE PILOT FAILURE TO OBTAIN ENOUGH AIRSPEED FOR TAKEOFF WHICH RESULTED IN A LOSS OF AIRCRAFT CONTROL, AND HIS FAILURE TO COMPENSATE FOR THE CROSSWIND CONDITIONS. NTSB Identification: ATL93LA090 For details, refer to NTSB microfiche number 52765A Accident occurred MAY-09-93 at GREENWOOD, SC Aircraft: RAPP VAN'S RV-4, registration: N743DR Injuries: 2 Uninjured. ABOUT FIVE MINUTES INTO THE FLIGHT, THE PILOT EXPERIENCED A LOSS OF ENGINE POWER, BUT REGAINED POWER FOR 5 SECONDS BEFORE THE ENGINE QUIT AGAIN. THE PILOT ATTEMPTED AN EMERGENCY LANDING TO A FIVE LANE HIGHWAY, BUT COLLIDED WITH TWO ONCOMING TRUCKS ABOUT FIVE FEET ABOVE THE GROUND PRIOR, TO TOUCHDOWN. EXAMINATION OF THE AIRCRAFT FAILED TO DISCLOSE A MECHANICAL PROBLEM. ACCORDING TO THE ICING PROBABILITY CURVES, WEATHER CONDITIONS EXISTED WHICH WERE FAVORABLE FOR THE FORMATION OF CARBURETOR ICE. ACCORDING TO THE PILOT, THE AIRPLANE WAS NOT EQUIPPED WITH A CARBURETOR HEAT SOURCE Probable Cause THE LOSS OF ENGINE POWER WHICH RESULTED FROM THE FORMATION OF CARBURETOR ICE. THE LACK OF A CARBURETOR HEAT SOURCE AND THE CARBURETOR ICING CONDITIONS WERE FACTORS NTSB Identification: FTW93LA161 For details, refer to NTSB Imaging System Accident occurred MAY-21-93 at TYLER, TX Aircraft: LEWIS RV4, registration: N61DL Injuries: 1 Uninjured. DURING A PLEASURE FLIGHT THE PILOT HAD LANDED AT A PRIVATE AIR STRIP; HE REPORTED THAT CONTROL WAS LOST WHEN THE LEFT BRAKE LOCKED UP DURING THE LANDING ROLL. AN INSPECTION OF THE LANDING GEAR AND BRAKE SYSTEM REVEALED NO ANOMOLIES. Probable Cause PILOT'S LOSS OF DIRECTIONAL CONTROL. NTSB Identification: SEA93LA146 For details, refer to NTSB Imaging System Accident occurred JUL-01-93 at INDEPENDENCE, OR Aircraft: DOELLEFELD RV6A, registration: N6LG Injuries: 1 Fatal. DURING THE TAKEOFF ROLL, THE NEWLY CERTIFIED EXPERIMENTAL RV6A VEERED SUDDENLY TO THE LEFT AND BEGAN TO DEPART THE SIDE OF THE RUNWAY. WHILE DEPARTING THE RUNWAY, THE AIRCRAFT LIFTED OFF, BUT ACCORDING TO WITNESSES, THE PILOT DID NOT APPEAR TO BE IN POSITIVE CONTROL. THE AIRCRAFT THEN CONTINUED TO A POSITION NEAR THE DOWNWIND, BEFORE ROLLING TO THE LEFT AND DESCENDING INTO THE GROUND AT A HIGH RATE OF SPEED. THE PILOT WAS OBSERVED TO MAKE NO MOVEMENT WHILE THE AIRCRAFT WAS AIRBORNE, AND HE DID NOT RESPOND ON HIS RADIO WHEN ANOTHER PILOT, WHO HAD MADE RADIO CONTACT WITH HIM JUST PRIOR TO THE TAKEOFF, TRANSMITTED A RADIO MESSAGE TO HIM TO SEE IF HE WAS HAVING TROUBLE. Probable Cause AN IN FLIGHT LOSS OF CONTOL FOR UNKNOWN REASONS. NTSB Identification: CHI93DEP02 For details, refer to NTSB Imaging System Accident occurred JUL-24-93 at LAKE DELTON, WI Aircraft: STOECKLER RV-4, registration: N720DS Injuries: 1 Fatal, 1 Serious. WITNESSES OBSERVED THE AIRPLANE MANEUVERING NEAR A RESIDENTIAL AREA, MAKING 30 TO 45 DEGREE BANKED LEFT TURNS. ON THE LAST CIRCLE THE AIRPLANE COLLIDED WITH TREE TOPS, LEVELED MOMENTARILY AND THEN NOSED OVER AND IMPACTED THE TERRAIN. Probable Cause the pilot-in-command's failure to maintain proper altitude. A factor was trees. NTSB Identification: MIA93FA184 For details, refer to NTSB Imaging System Accident occurred AUG-27-93 at GRAND RIDGE, FL Aircraft: REHER, KENT O. RV 6, registration: N220KM Injuries: 1 Fatal. Pilot reported to ATC that he was descending from 13,500 feet to 11,500 feet. When passing 11,500 feet the pilot reported he was descending to 9,500 feet. No further communication was made with the pilot. Radar data showed the aircraft descended normally until passing 10,000 feet. At that point the aircraft descended rapidly and was lost from radar at 5,200 feet. Eyewitnesses observed the aircraft in normal flight at about 10,000 feet. The aircraft's wing rocked back and forth and the aircraft then nosed over and descended vertically with the engine operating at high rpm until ground impact. Postcrash examination of the aircraft revealed all components necessary for flight were located on or around the main wreckage. No evidence to indicate precrash failure or malfunction of the aircraft structure, flight controls, or engine was found. No evidence of in-flight bird contact was found. The aircraft kit manufacturer reported that he has not seen any stability or control problems that would cause uncontrolled vertical descent. The pilot was reported to be in good health and good spirits before the flight. Probable Cause UNDETERMINED. NTSB Identification: SEA93LA192 For details, refer to NTSB Imaging System Accident occurred SEP-05-93 at SALMON, ID Aircraft: WESTHOLM VANS RV-6, registration: N16JL Injuries: 2 Uninjured. THE PILOT TOOK OFF, CLIMBED TO ABOUT 50 FEET AGL, AND THE ENGINE QUIT. HE INITIATED A FORCED LANDING AND THE ACFT STRUCK A FENCE POST DURING GROUND ROLL. A POST ACCIDENT EXAMINATION REVEALED THE GASCOLATOR FUEL DRAIN WAS LOCKED IN THE OPEN POSITION. Probable Cause THE INADEQUATE PREFLIGHT PLANNING/PREPARATION BY THE PIC IN HIS FAILURE TO CLOSE THE FUEL DRAIN VALVE. A FACTOR RELATING TO THE ACCIDENT WAS THE FENCE POST LOCATED IN THE LANDING AREA. NTSB Identification: ATL93LA156 For details, refer to NTSB Imaging System Accident occurred SEP-11-93 at STATESVILLE, NC Aircraft: BROWN VAN'S RV-3, registration: N115DB Injuries: 1 Serious. THE PILOT ATTEMPTED A LOW PASS MANEUVER OVER THE PRIVATE AIRSTRIP AND COLLIDED WITH NEARBY, UTILITY LINES ABOUT 40 FEET ABOVE THE GROUND. ACCORDING TO WITNESSES THE AIRPLANE WAS FLYING AT SPEEDS MORE THAN 200 MPH AND THERE WAS NO ATTEMPT TO AVOID THE COLLISION; THE SOUTHERLY FLIGHT PATH PLACED THE SUN INTO THE PILOT EYES. EXAMINATION OF THE AIRCRAFT FAILED TO DISCLOSE ANY MECHANICAL PROBLEMS WITH THE AIRPLANE, NOR WERE AIRCRAFT PROBLEMS NOTICED OR HEARD BY THE GROUND OBSERVERS. Probable Cause WAS THE PILOT'S FAILURE TO SEE AND AVOID UTILITY LINES. A FACTOR WAS THE SUNGLARE. NTSB Identification: LAX93LA355 Accident occurred SEP-11-93 at MESA, AZ Aircraft: ALFRED F. DIBERNARDINO RV-6A, registration: N45FD Injuries: 2 Uninjured. THE PILOT WAS CONDUCTING A LOCAL TRAFFIC PATTERN PERSONAL FLIGHT. ON THE FIRST APPROACH THE PILOT INADVERTENTLY STALLED THE AIRPLANE DURING THE LANDING FLARE. THE AIRPLANE SUSTAINED A HARD LANDING WHICH COLLAPSED THE NOSE AND RIGHT MAIN LANDING GEARS. Probable Cause the pilot's failure to maintain the landing airspeed. The inadvertent stall was a factor related to this accident. NTSB Identification: LAX93LA372 For details, refer to NTSB Imaging System Accident occurred SEP-30-93 at ELY, NV Aircraft: CRYDER RV-6, registration: N607DC Injuries: 2 Uninjured. The pilot reported that during the ground roll portion of takeoff the left main landing gear tire blew out. The pilot aborted the takeoff by reducing engine power. The airplane veered off the runway, entered a gravel area, and collided with a runway sign. The runway was 5998 feet long by 150 feet wide. Probable Cause the pilot's failure to maintain directional control of his conventional gear airplane after the failure of a main landing gear tire. NTSB Identification: NYC94LA010 For details, refer to NTSB Imaging System Accident occurred OCT-15-93 at HATFIELD, MA Aircraft: SCHLAPPI RV3, registration: N669CP Injuries: 1 Minor. THE PILOT WAS ON APPROACH TO RUNWAY 29 WHEN HE LANDED ABOUT 35 FEET SHORT OF THE RUNWAY AND THE AIRPLANE STRUCK A DIRT BANK. THE PILOT REPORTED THE APPROACH WAS ROUTINE UNTIL SHORT FINAL, WHEN THE AIRPORT AND TREES "STARTED TO" BOIL UNDER ME AND I ADDED POWER TO "MAINTAIN ALTITUDE BUT THE (DIRT BANK) CAME UP..." THE PILOT REPORTED NO MECHANICAL MALFUNCTION. Probable Cause The pilot misjudged his distance and altitude which resulted in an undershoot of the runway. A factor was his delay in intiating a go around. NTSB Identification: ATL94LA027 For details, refer to NTSB Imaging System Accident occurred DEC-07-93 at RIDGELAND, SC Aircraft: WONDER VAN'S ACFT RV-6, registration: N443MW Injuries: 1 Minor. BEFORE DESCENT, THE PILOT NOTED A SLIGHT ENGINE VIBRATION. DURING DESCENT, HE NOTICED THAT THE ELECTRONIC TACHOMETER FOR THE RIGHT MAGNETO WAS READING ZERO AND BLUE SMOKE BEGAN ENTERING THE COCKPIT. THE PILOT REPORTED THAT OIL BEGAN COVERING PORTIONS OF THE WINDSCREEN AND THE ENGINE SEIZED. HE MADE AN EMERGENCY LANDING IN A COTTON FIELD ABOUT SEVEN MILES WEST OF THE DESTINATION AIRPORT. DURING THE LANDING ROLL, THE AIRPLANE ENCOUNTERED AN AREA OF SOFT DIRT AND NOSED OVER. POST-ACCIDENT EXAMINATION OF THE ENGINE REVEALED THAT THE RIGHT MAGNETO HAD SEPARATED FROM THE CRANKCASE, CAUSING A LARGE HOLE FROM WHICH OIL COULD ESCAPE FROM THE ENGINE. THE LEFT MAGNETO WAS ALSO FOUND IN THE EARLY STAGES OF SEPARATION FROM THE ENGINE. THE MAGNETOS HAD BEEN INSTALLED 16 HOURS BEFORE THE ACCIDENT BY A CERTIFIED REPAIR STATION. Probable Cause IMPROPER INSTALLATION OF THE MAGNETOS BY MAINTENANCE PERSONNEL, WHICH ALLOWED THE RIGHT MAGNETO TO COME LOOSE, OIL TO ESCAPE FROM THE ENGINE, AND SUBSEQUENT OIL STARVATION. NTSB Identification: LAX94FA081 For details, refer to NTSB Imaging System Accident occurred DEC-26-93 at LA VERNE, CA Aircraft: GOLIGHTLY RV-4, registration: N312RG Injuries: 1 Fatal. Witnesses stated that the airplane was about 200- to 300-feet high in the takeoff initial climb when they heard a loss of engine power. They stated that the airplane abruptly rolled to the right into what appeared to be the start of a spin, then impacted into an aircraft tie down area on the airport about 500 feet from the runway centerline. Postcrash examination of the fuel selector revealed two loose fuel line "B" nuts at the selector and a loose fuel line fitting in the selector body with less than three threads of engagement. The engine fuel primer was found unlocked and out about 1/4 inch. Probable Cause a loss of engine power due to the improper maintenance and installation of the fuel system lines and fittings, and the pilot's failure to ensure the engine fuel primer was locked prior to takeoff. An additional cause was the pilot's failure to maintain minimum airspeed to avoid a stall while maneuvering after the engine power loss and the inadvertent entry into a stall/spin. NTSB Identification: CHI94LA079 For details, refer to NTSB Imaging System Accident occurred FEB-06-94 at RICHLAND, MO Aircraft: ROBERTS RV-6A, registration: N63JR Injuries: 1 Serious, 1 Minor. THE PILOT REPORTED THAT HE FLEW THE HOMEBUILT AIRPLANE LOCALLY FOR ABOUT 45 MINUTES, THEN MADE A FULL STOP LANDING AT ANOTHER AIRPORT. SOON THEREAFTER, HE ELECTED TO TAKEOFF ON THE RETURN FLIGHT. HE STATED THAT WHEN HE APPLIED FULL THROTTLE TO TAKE OFF, THE ENGINE STOPPED RUNNING. THE PILOT RESTARTED THE ENGINE, USING THE PRIMER, BUT IT QUIT RUNNING AGAIN SHORTLY AFTER STARTING. HE RESTARTED THE ENGINE AGAIN AND THIS TIME IT CONTINUED RUNNING. THE PILOT PERFORMED A FULL STATIC RUN-UP. FINDING NOTHING WRONG DURING THE RUN-UP, HE TOOK OFF AND FLEW BACK TO THE HOME AIRPORT. WHILE ON FINAL APPROACH TO LAND, THE ENGINE LOST POWER AGAIN. DURING A SUBSEQUENT EMERGENCY LANDING, THE AIRPLANE COLLIDED WITH TREES AND THE TERRAIN. AN ON-SCENE INVESTIGATION REVEALED A CLEAN AND FUNCTIONAL FUEL SYSTEM. THE TEMPERATURE AND DEW POINT WERE 56 AND 24 DEGREES, RESPECTIVELY, WHICH WOULD HAVE BEEN MARGINALLY CONDUCIVE FOR CARBURETOR ICE. NO PREIMPACT MECHANICAL PROBLEM WAS FOUND THAT WOULD HAVE RESULTED IN THE LOSS OF POWER. Probable Cause LOSS OF ENGINE POWER (DURING FLIGHT) FOR AN UNDETERMINED REASON, AFTER THE PILOT EXPERIENCED LOSS OF ENGINE POWER BEFORE TAKEOFF FOR AN UNKNOWN REASON. NTSB Identification: SEA94LA101 For details, refer to NTSB Imaging System Accident occurred APR-15-94 at ENTERPRISE, OR Aircraft: ASHER RV-6, registration: N7057G Injuries: 1 Minor, 1 Uninjured. JUST AFTER TAKEOFF, THE AIRCRAFT EXPERIENCED A PARTIAL LOSS OF POWER, AND THE PILOT ELECTED TO ATTEMPT A FORCED LANDING ON THE NEARBY UNSUITABLE TERRAIN. INSPECTION OF THE AIRCRAFT REVEALED THAT THE INDUCTION AIR FILTER WAS PARTIALLY BLOCKED BY FRAGMENTS OF AN INSULATING MATERIAL THAT THE BUILDER HAD WRAPPED AROUND THE EXHAUST SYSTEM. Probable Cause A LOSS OF POWER DUE TO A PARTIALLY BLOCKED INDUCTION AIR FILTER. FACTORS INCLUDE NO SUITABLE TERRAIN ON WHICH TO EXECUTE A FORCED LANDING. NTSB Identification: SEA94LA107 For details, refer to NTSB Imaging System Accident occurred APR-23-94 at WESTON, ID Aircraft: RICH RV-4, registration: N3344E Injuries: 1 Uninjured. WHILE MANEUVERING IN SERIOUS ICING ATMOSPHERIC CONDITIONS, THE FUEL/AIR FLOW IN THE THROTTLE BODY INJECTOR BECAME RESTRICTED BY ICE BUILD-UP, AND THE ENGINE LOST POWER. THE PILOT SWITCHED FUEL TANKS, TURNED ON THE AUXILIARY FUEL PUMP, AND CYCLED THE IGNITION/MAGNETO SWITCH, BUT DID NOT APPLY CARBURETOR HEAT. BEING UNABLE TO RESTART THE ENGINE, THE PILOT ATTEMPTED A FORCED LANDING ON THE UNSUITABLE TERRAIN. Probable Cause THE PILOT'S FAILURE TO USE CARBURETOR HEAT. FACTORS INCLUDE CARBURETOR ICING CONDITIONS, AND NO SUITABLE SITE FOR A FORCED LANDING. NTSB Identification: FTW94FA149 For details, refer to NTSB Imaging System Accident occurred MAY-07-94 at ELBERT, CO Aircraft: ROBL RV4, registration: N88LG Injuries: 2 Fatal. THE PILOT RADIOED HE WAS GOING TO MAKE A LOW NORTH-SOUTH PASS OVER THE GLIDERPORT. WITNESSES SAID THE AIRPLANE FLEW 20 FEET ABOVE THE GROUND, PULLED UP TO 800 FEET, DID A WINGOVER, AND ENTERED A SPIN. ONE WITNESS SAW THE AIRPLANE STOP SPINNING JUST BEFORE IMPACT. SHE SAID THE NOSE PITCHED UP ABRUPTLY, THE AIRPLANE ENTERED AN ACCELERATED STALL, AND DISAPPEARED FROM VIEW IN A FLAT ATTITUDE. THE PILOT'S LOGBOOK REVEALED 2.1 HOURS OF AEROBATIC INSTRUCTION AND 7.1 HOURS SOLO AEROBATICS IN VARIOUS AIRPLANES IN 1992. IN 1993 AND 1994, THE PILOT LOGGED 9.1 HOURS OF SOLO AEROBATICS IN THE RV4, INCLUDING LOOPS, ROLLS, INVERTED FLIGHT, WINGOVERS, AND SPINS. Probable Cause AN INADVERTENT STALL SPIN. A FACTOR WAS THE PILOT'S PERFORMANCE OF AEROBATIC MANEUVERS AT AN INADEQUATE ALTITUDE. NTSB Identification: SEA94LA150 For details, refer to NTSB Imaging System Accident occurred JUN-16-94 at CROWHEART, WY Aircraft: SCHELL RV-6A, registration: N48TS Injuries: 1 Serious, 1 Minor. THE PILOT AND PASSENGER DEPARTED ON A LOCAL SIGHTSEEING FLIGHT INTO MOUNTAINOUS TERRAIN. DURING THE FLIGHT THEY ENCOUNTERED STRONG WIND CONDITIONS AND THE PILOT DECIDED TO RETURN TO HIS RANCH AND LAND. THE PASSENGER REPORTED THAT DURING THE COURSE REVERSAL A GUST OF WIND SLAMMED THE AIRCRAFT TO THE GROUND. Probable Cause THE PILOT IN COMMAND'S FAILURE TO MAINTAIN ADEQUATE ALTITUDE. A FACTOR WAS DOWNDRAFT CONDITIONS. NTSB Identification: SEA94LA184 For details, refer to NTSB Imaging System Accident occurred JUL-17-94 at TWISP, WA Aircraft: BLACK RV-4, registration: N144US Injuries: 1 Uninjured. THE PILOT OF THE AMATEUR-BUILT EXPERIMENTAL BLACK RV-4 SAID THAT "THE BOTTOM DROPPED OUT" WHEN HE WAS ON APPROACH FOR LANDING. THE AIRCRAFT BOUNCED BACK INTO THE AIR AFTER A HARD LANDING, WITH ITS THROTTLE AND MIXTURE CONTROL JAMMED. THE PILOT WAS ABLE TO FLY THE AIRCRAFT, WHICH WAS SUBSTANTIALLY DAMAGED DURING THE HARD LANDING, TO ANOTHER AIRPORT AND SUCCESSFULLY LAND. Probable Cause PROPER DESCENT RATE WAS NOT MAINTAINED DURING APPROACH. NTSB Identification: NYC94LA133 For details, refer to NTSB Imaging System Accident occurred JUL-19-94 at FARMINGDALE, NJ Aircraft: HOOPES RV-6, registration: N269RH Injuries: 1 Uninjured. DURING LANDING THE AIRPLANE RAN OFF THE SIDE OF THE RUNWAY AND COLLIDED WITH A DIRTBANK. ACCORDING TO THE PILOT, "UPON TOUCH DOWN, (HE) BLANKED OUT TO SEMI-CONSCIOUS AND COULD NOT CONTROL PLANE." THE PILOT REPORTED THAT HE HAD DONATED BLOOD EARLIER IN THE DAY, WHICH IS WHAT HE BELIEVES IS THE REASON FOR THE SEMI-CONSCIOUSNESS. HE STATED THAT HE SHOULD HAVE WAITED 2 DAYS AFTER THE BLOOD DONATION, BEFORE PILOTING AN AIRCRAFT. Probable Cause THE PILOT'S IMPROPER DECISION TO FLY AFTER DONATING BLOOD WHICH RESULTED IN HIS INCAPACITATION. NTSB Identification: CHI94LA259 For details, refer to NTSB Imaging System Accident occurred AUG-01-94 at CARTHAGE, MO Aircraft: STUGART VANS RV-6, registration: N29PT Injuries: 2 Uninjured. THE AIRPLANE BOUNCED ON LANDING AT THE MEYERS AIR PARK, CARTHAGE, MISSOURI. THE PILOT FAILED TO MAINTAIN DIRECTIONAL CONTROL AND THE AIRPLANE LANDED IN THE GRASS PARALLEL TO THE RUNWAY. DURING LANDING ROLL, IN THE GRASS, THE AIRPLANE ENCOUNTERED AN AREA WHICH HAD BEEN PLOWED, AND NOSED OVER. Probable Cause failure of the pilot to maintain directional control during landing and unsuitable terrain encountered during the landing roll. NTSB Identification: SEA94LA202 For details, refer to NTSB Imaging System Accident occurred AUG-01-94 at GLENDIVE, MT Aircraft: GROCE VANS RV-4, registration: N7GJ Injuries: 1 Fatal. An airline customer service agent observed the aircraft during takeoff, noting that it was airborne at 10 to 15 feet above the ground and "not really gaining altitude." She did not witness the crash. The captain of a commuter flight noted that "after rotation approx 25' or so, his left wing dipped downward, aircraft seemed under powered. It was hot, Density alt(itude) 5200' lite gusty winds." The commuter captain did not see the aircraft crash. Witnesses noted that the airplane became airborne in the first quarter of the runway. During on-site inspection, FAA inspectors noted that the aft cockpit was loaded with camping gear, including a tent, campstove, six cans of food, a large clothing bag, camera, headset, and five or six jars, as well as an extensive collection of aviation literature. When the wreckage was inspected, no mechanical discrepancies were noted by FAA personnel. Probable Cause AIRSPEED WAS NOT MAINTAINED AFTER TAKEOFF. A FACTOR WAS HIGH DENSITY ALTITUDE. NTSB Identification: FTW95LA010 For details, refer to NTSB Imaging System Accident occurred OCT-05-94 at MARBLE FALLS, TX Aircraft: WINN RV-6A, registration: N600CW Injuries: 3 Minor. DURING LANDING RUNWAY 17 THE PILOT ENCOUNTERED A "SEVERE DOWN DRAFT" AND THE AIRCRAFT IMPACTED SHORT RESULTING IN DAMAGE TO THE FUSELAGE AND WINGS. EVIDENCE AT THE ACCIDENT SCENE (BENT VEGETATION) REVEALED STRONG GUSTING WINDS FROM THE SOUTH. THE PILOT REPORTED WIND WAS FROM THE SOUTH AT ABOUT 20 KNOTS. Probable Cause THE PILOT'S IMPROPER COMPENSATION FOR THE WIND CONDITIONS. A FACTOR WAS THE UNFAVORABLE WINDS. NTSB Identification: LAX95LA013 For details, refer to NTSB Imaging System Accident occurred OCT-19-94 at BRIDGEPORT, CA Aircraft: STAN G. HALLAM RV-6, registration: N93SJ Injuries: 1 Uninjured. THE PILOT WAS COMPLETING A VFR PERSONAL FLIGHT. THE PILOT SAID THAT WHILE ON FINAL APPROACH, HE EXPERIENCED A SINK RATE WHICH HE WAS UNABLE TO ARREST BEFORE THE AIRPLANE COLLIDED WITH THE TERRAIN SHORT OF THE RUNWAY THRESHOLD. HE SAID HE DID NOT EXPERIENCE ANY MECHANICAL PROBLEMS AND THE WIND WAS CALM. Probable Cause the pilot's poorly planned approach, his failure to maintain the proper airspeed and descent rate, and his failure to perform the necessary remedial action. NTSB Identification: CHI95DTK01 For details, refer to NTSB Imaging System Accident occurred JAN-08-95 at LENNOX, SD Aircraft: GAY RV-4, registration: N29PG Injuries: 1 Fatal. A WITNESS REPORTED THAT THE AIRPLANE WAS FLYING LOW ALTITUDE AEROBATIC MANEUVERS IN THE VICINITY OF THE ACCIDENT SITE. RADAR TRACKING DATA, AVAILABLE ABOVE AN ALTITUDE OF APPROX 800 FT AGL, ALSO SHOWS A VFR TARGET CONDUCTING LOW ALTITUDE AEROBATIC MANEUVERS. EXAMINATION OF THE WRECKAGE REVEALED NO EVIDENCE OF PREIMPACT AIRCRAFT OR ENGINE MALFUNCTION. THE AIRPLANE HAD COME TO REST 132 FT FROM THE FIRST IMPACT WITH THE GROUND. TOXICOLOGICAL TESTS REVEALED 0.031 UG/ML BROMPHENIRAMINE AND 0.012 UG/ML DIPHENHYDRAMINE IN THE BLOOD SPECIMEN. THERAPEUTIC LEVELS ARE 0.016-0.070 AND 0.100 RESPECTIVELY. BROMPHENIRAMINE AND DIPHENHYDRAMINE (ANTIHISTAMINES) ARE ACTIVE INGREDIENTS IN MANY NONPRESCRIPTION COLD AND ALLERGY MEDICATIONS, AND CAN CAUSE DROWSINESS. Probable Cause THE PILOT'S FAILURE TO MAINTAIN ADEQUATE ALTITUDE WHILE PERFORMING AEROBATIC MANEUVERS. THE PILOT'S IMPAIRMENT OF JUDGMENT AND PERFORMANCE DUE TO DRUGS WAS A FACTOR. NTSB Identification: MIA95LA064 For details, refer to NTSB Imaging System Accident occurred JAN-28-95 at ZELLWOOD, FL Aircraft: BEEBE, DALE G. RV-6, registration: N109DB Injuries: 1 Uninjured. THE PILOT OF THE EXPERIMENTAL AIRPLANE STATED THE CANOPY OPENED JUST AFTER LIFTOFF. HE FURTHER STATED HE "WAS OUT OF RUNWAY" AND THEN REDUCED POWER IN AN ATTEMPT TO ABORT TAKEOFF. HE FLEW PAST THE END OF THE RUNWAY, COLLIDED WITH TREES, AND NOSED OVER. Probable Cause THE IMPROPER IN-FLIGHT DECISION BY THE PILOT TO ABORT TAKEOFF WITH INSUFFICIENT RUNWAY REMAINING. NTSB Identification: FTW95LA122 For details, refer to NTSB Imaging System Accident occurred FEB-25-95 at BRIGHTON, CO Aircraft: MORRISON, MARVIN E. RV-4, registration: N872MM Injuries: 2 Minor. DURING INITIAL CLIMB FOLLOWING TAKEOFF, THE ENGINE LOST POWER AND THE PILOT CONDUCTED A FORCED LANDING TO A PLOWED FIELD. THE LANDING GEAR DUG IN AND THE AIRCRAFT NOSED OVER. AUTOMOTIVE FUEL WAS BEING USED IN THE AIRCRAFT AT THE TIME. AN FAA INSPECTOR, WHO EXAMINED THE AIRCRAFT, FOUND NO EVIDENCE AS TO WHY THE ENGINE LOST POWER. Probable Cause A TOTAL LOSS OF POWER FOR UNKNOWN REASONS. A FACTOR WAS THE LACK OF SUITABLE TERRAIN FOR A FORCED LANDING. NTSB Identification: SEA95LA074 For details, refer to NTSB Imaging System Accident occurred APR-02-95 at RENTON, WA Aircraft: MIRSEPASY VAN'S RV-6A, registration: N35EM Injuries: 2 Serious. GROUND WITNESSES, SOME OF WHOM WERE PILOTS, OBSERVED THE HOME BUILT AIRPLANE PITCHING UP AND DOWN DURING THE STRAIGHT-IN APPROACH TO THE RUNWAY. NO UNUSUAL ENGINE NOISES WERE REPORTED BY THE WITNESSES, AND NO DISTRESS CALLS WERE MADE BY THE PRIVATE PILOT TO THE CONTROL TOWER. THE AIRPLANE WAS THEN OBSERVED TO PITCH UP AND "SLAM HARD" ONTO THE RUNWAY AFTER A DECREASE IN ENGINE POWER. THE AIRPLANE THEN BOUNCED INTO THE AIR AND BEGAN TO DRIFT OFF THE RUNWAY. AFTER THE AIRPLANE IMPACTED THE RUNWAY A SECOND TIME, THE ENGINE WAS HEARD TO "REV UP." THE AIRPLANE THEN PITCHED UP, BANKED TO THE LEFT, DESCENDED LEFT WING FIRST INTO THE GROUND, AND CARTWHEELED OFF THE WEST EDGE OF THE RUNWAY. NO PREIMPACT MECHANICAL MALFUNCTIONS WERE REPORTED BY THE PILOT OR FOUND BY INVESTIGATORS. THE WIND WAS BLOWING STRAIGHT DOWN THE RUNWAY (FROM 330 DEGREES) AT 11 KNOTS. THE PILOT STATED THAT HE COULD NOT REMEMBER THE LANDING. Probable Cause THE PILOT'S FAILURE TO RECOVER FROM THE BOUNCED LANDING, AND HIS FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S FAILURE TO MAINTAIN AN ADEQUATE DESCENT RATE TOWARD THE RUNWAY. NTSB Identification: MIA95FA105 For details, refer to NTSB Imaging System Accident occurred APR-12-95 at DAVIE, FL Aircraft: PACKARD/SQUIRE RV-4, registration: N233AB Injuries: 1 Fatal. WITNESSES DRIVING ON A HIGHWAY REPORTED SEEING THE AIRPLANE FLYING WESTERLY ABOUT 300 FT AGL, THEN BANK TO THE RIGHT AND DESCEND NOSE LOW IMPACTING THE HIGHWAY. THE AIRPLANE SLID ACROSS THE TWO EASTBOUND LANES OF THE HIGHWAY, CAME TO REST INVERTED ON THE GRASS MEDIAN, AND WAS DESTROYED BY POSTCRASH FIRE. EXAMINATION OF THE FLIGHT CONTROLS AND ENGINE REVEALED NO EVIDENCE OF PREIMPACT FAILURE OR MALFUNCTION. THE RIGHT WING FUEL TANK WAS RUPTURED AT THE INBOARD FORWARD SECTION. THE LEFT WING FUEL TANK WAS NOT RUPTURED, AND NO FUEL WAS NOTED. THE FUEL SELECTOR WAS FOUND POSITIONED TO THE RIGHT FUEL TANK. FUEL CONSUMPTION CALCULATIONS REVEALED ABOUT 20.7 GALS OF FUEL USED SINCE LAST REFUELING. EACH FUEL TANK HOLDS ABOUT 16 GALS OF FUEL. Probable Cause ENGINE FUEL STARVATION DUE TO THE PILOT'S FUEL MISMANAGEMENT. A LOSS OF CONTROL FOLLOWED AS THE PILOT INADVERTENTLY STALLED THE AIRPLANE WHILE MANEUVERING FOR THE FORCED LANDING. NTSB Identification: SEA95LA149 For details, refer to NTSB Imaging System Accident occurred JUL-15-95 at ELK RIVER, ID Aircraft: EDWIN J. ESTENSON RV-4, registration: N90EE Injuries: 2 Uninjured. DURING THE LANDING ROLL, THE AIRPLANE VEERED TO THE LEFT AND INTO THE TALL GRASS ALONGSIDE THE AIRSTRIP. THE PILOT TRIED TO CORRECT WITH RIGHT RUDDER CONTROL AND POWER; HOWEVER, THE AIRPLANE CONTINUED OFF THE AIRSTRIP, THROUGH THE TALL GRASS AND COLLIDED WITH A FENCE. THE AIRGUIDE INDICATES THAT THE RUNWAY IS 150 FEET WIDE; HOWEVER, THE PILOT REPORTED THAT THE GRASS HAD BEEN MOWED TO ONLY A 21 FOOT WIDTH. THE REMAINING AREA AROUND THE AIRSTRIP WAS TALL GRASS. Probable Cause THE PILOT FAILED TO MAINTAIN DIRECTIONAL CONTROL. THE TALL VEGETATION WAS A FACTOR. NTSB Identification: LAX95LA258 For details, refer to NTSB Imaging System Accident occurred JUL-20-95 at CORCORAN, CA Aircraft: MARGESON/HEIDEBRINK VANS RV-3, registration: N18DT Injuries: 1 Serious. THE PILOT INDICATED THAT HE EXPERIENCED A LOSS OF ENGINE POWER WHILE CRUISING ABOUT 4,000 FEET ABOVE THE GROUND AND WAS ATTEMPTING TO MAKE A FORCED LANDING AT A PRIVATE AIRSTRIP HE NOTICED WHILE DESCENDING. A GROUND WITNESS WAS DRIVING ON A HIGHWAY AND OBSERVED THE AIRCRAFT GLIDING DOWN TOWARDS A FIELD. THE WITNESS SAID THE AIRCRAFT STARTED A CLIMB FROM ABOUT 150 FEET AGL, THEN TURNED RAPIDLY TO THE LEFT AND "CORK-SCREWED TO THE GROUND" IN A COTTON FIELD. AFTER RECOVERY OF THE AIRCRAFT FROM THE COTTON FIELD, THE AIRFRAME AND ENGINE WERE EXAMINED BY AN FAA AIRWORTHINESS INSPECTOR WHO FOUND NO DISCREPANCY IN EITHER THE WRECKAGE OR THE MAINTENANCE RECORDS. THE ENGINE WAS REMOVED FROM THE AIRFRAME AND SENT TO AN FAA CERTIFIED ENGINE OVERHAUL SHOP FOR EVALUATION. THE OVERHAUL SHOP FOUND NO MECHANICAL DISCREPANCIES WITH THE ENGINE. Probable Cause a loss of engine power for undetermined reasons, and the pilot's failure to maintain an adequate airspeed while maneuvering for a forced landing, which resulted in an inadvertent stall/spin. NTSB Identification: SEA95LA201 For details, refer to NTSB Imaging System Accident occurred SEP-01-95 at GRANTS PASS, OR Aircraft: BRISTOL RV-6, registration: N694CA Injuries: 1 Uninjured. During the initial climb after takeoff, the aircraft experienced a complete loss of engine power, and the pilot made an emergency landing in a nearby field. The pilot completed a successful touchdown, but the aircraft flipped over in high vegetation during the landing roll. No reason for the power loss could be found. The engine was subsequently reinstalled on an aircraft, and according to the owner, the engine is currently in operation and has functioned without problem. Probable Cause a loss of engine power for undetermined reasons. NTSB Identification: SEA95LA224 For details, refer to NTSB Imaging System Accident occurred SEP-23-95 at JACKSONVILLE, OR Aircraft: MACPHEE VANS RV-6, registration: N726WM Injuries: 1 Fatal, 1 Serious. The pilot-in-command and his pilot-rated passenger departed on a pleasure flight to attend a barbecue at a private airstrip. Witnesses at the airstrip observed the airplane approach the runway from the south in a landing configuration with no problems noted. The airplane was then observed to fly over the entire length of the airstrip and beyond about 6 feet above the runway. The airplane then banked to the left and headed towards rapidly rising, mountainous terrain. The airplane then impacted trees. No abnormal engine noises were reported, and no preimpact mechanical malfunctions were found. The carburetor heat was found partially out, and the flaps were partially extended. Takeoffs to the north are prohibited at the airstrip due to terrain and obstructions. The density altitude was computed to be about 3,747 feet. Probable Cause the pilot-in-command's failure to maintain altitude and/or clearance from surrounding terrain after a low pass. The mountainous terrain was a factor. NTSB Identification: FTW96FA009 For details, refer to NTSB Imaging System Accident occurred OCT-07-95 at LONGMONT, CO Aircraft: RUPE RV-4, registration: N61TR Injuries: 1 Fatal. During flight the propeller failed shedding one blade approximately 15 inches from the hub. The aircraft was observed to pitch up and enter a flat spin to impact. The propeller installed on the aircraft was a cut-down metal propeller, and the aircraft specifications required that only wood propellers be used. The logs indicated a wood propeller was installed on the aircraft and no history of the metal propeller was found. Probable Cause the installation of an unapproved metal propeller which led to a fatigue failure of a blade and loss of aircraft control. NTSB Identification: SEA96LA004 For details, refer to NTSB Imaging System Accident occurred OCT-07-95 at NORTH PLAINS, OR Aircraft: VANS RV-6T, registration: N96VA Injuries: 2 Uninjured. While on approach for landing, the pilot selected the left fuel tank which was indicating more than 3/4 full. About 1/2 mile from the end of the runway, the engine lost all power. The pilot made a forced landing in a field of raspberries, and during the landing flare the aircraft collided with steel fence posts and static wires used to support the raspberries. The left tank was found dry. An internal failure in the left tank fuel quantity sending unit had caused it to give a false indication. Probable Cause Fuel starvation due to the failure of the left tank fuel quantity sending unit which resulted in a false indication of fuel quantity. A factor was the lack of suitable terrain for the forced landing. NTSB Identification: SEA96LA005 For details, refer to NTSB Imaging System Accident occurred OCT-08-95 at FOREST GROVE, OR Aircraft: CHARD RV-3A, registration: N27RV Injuries: 1 Fatal. The pilot of the RV-3 initiated a steeply banked right turn, after following another aircraft in a rapid climbing maneuver. During this turn, which was described by witnesses on the ground as extremely tight, the right wing was seen to separate from the fuselage. Examination of the wreckage revealed that the front wing spar had failed just outboard of its attach fitting, and the rear spar and rear spar doubler plate experienced a overstress separation through the attach bolt hole. The recording accelerometer found in the wreckage was indicating .2 G's more than the 9 G ultimate load limit published by the designer of the RV-3 aircraft plans. Probable Cause The pilot exceeded the design stress limit of the aircraft, followed by the failure of the right wing main spar. NTSB Identification: LAX96LA008 Accident occurred OCT-11-95 at ELY, NV Aircraft: TINCKLER VANS RV-6, registration: N6880R Injuries: 1 Uninjured. On October 11, 1995, at 1716 Pacific daylight time, an experimental home-built Tinckler Vans RV-6 airplane, N6880R, collided with flat terrain after take off from Yelland Field, Ely, Nevada. The aircraft sustained substantial damage. The certificated private pilot, the sole occupant, was not injured. The flight was originating as a personal cross country flight to Phoenix, Arizona, when the accident occurred. Visual meteorological conditions prevailed at the time and no flight plan was filed. The pilot reported that after take off from runway 18 he was unable to climb. After maintaining runway heading for about 1 minute the aircraft descended into terrain 1 to 2 miles from the airport. The propeller and landing gear were damaged on impact. The right wing tip struck a fence post, damaging a spar. The pilot reported that he had 38 gallons of fuel on board on departure. He also reported winds were from the southeast at 20 knots, gusting to 40, during take off. He did not report experiencing any mechanical difficulties with the aircraft. NTSB Identification: NYC96LA021 For details, refer to NTSB Imaging System Accident occurred OCT-31-95 at MONTICELLO, NY Aircraft: BISCHOFF VAN RV-6, registration: N9234B Injuries: 2 Minor. The pilot departed with 10 gallons of fuel onboard and with the intention of refueling at a nearby airport. After he arrived at the airport, instead of refueling, he remained in the traffic pattern and performed touch-and-go landings. After the fifth landing, the engine lost power while the airplane was on initial climb and struck trees during a forced landing. No evidence of a fuel spill or fuel odor was observed by those, who responded to the site. The airplane had been airborne for about 50 to 55 minutes, when the power loss occurred. Probable Cause the pilot's improper inflight decision to continue flight without sufficient fuel, which resulted in a loss of power due to fuel exhaustion. NTSB Identification: FTW96LA042 For details, refer to NTSB Imaging System Accident occurred NOV-11-95 at MCCKINNEY, TX Aircraft: LODGE RV-4, registration: N30RV Injuries: 2 Serious. The pilot reported that after leveling off at 1,800 feet MSL, and during a left turn, the engine lost total power. During the emergency descent the airplane stalled twice prior to impacting the ground. A witness observed the airplane "losing altitude fast" and "leveling off just prior to" ground impact. Postaccident examination revealed that the right wing main fuel tank did not have usable fuel, and the fuel in the left tank measured 1/2 inch on a measuring stick. The fuel selector handle was found in the "right main open" position, and both fuel quantity gauges indicated near empty. Probable Cause the pilot's failure to refuel the airplane which led to a loss of engine power due to fuel exhaustion, and the pilot's failure to maintain adequate airspeed. NTSB Identification: FTW96LA158 For details, refer to NTSB Imaging System Accident occurred APR-01-96 at LONGMONT, CO Aircraft: STAFFORD RV-4, registration: N84PS Injuries: 2 Minor. Upon arriving at the destination airport from a local cross country flight, the pilot performed three touch and go landings. While on the crosswind leg of the fourth pattern circuit, which was to culminate in a full stop landing, the engine lost power and the pilot made an emergency landing in a plowed field. During the landing roll, one main landing gear collapsed and the airplane nosed over. The flight originated with 11 gallons of fuel on board, and the duration of the flight was 54 minutes. According to the pertinent Lycoming engine chart, the fuel consumption at 75 percent power (2,450 rpm) is 10.5 gallons per hour. A review of the pilot's aero/medical data revealed him to be non-current in flight proficiency and medical certification. Probable Cause the pilot's inadequate preflight planning and preparation in that he failed to ensure the aircraft had sufficient fuel to complete the flight. A factor was the soft terrain. NTSB Identification: LAX96LA231 Accident occurred JUN-14-96 at INYOKERN, CA Aircraft: Vans RV6, registration: N43BL Injuries: 1 Serious, 1 Minor. On June 14, 1996, at 1500 hours Pacific daylight time, a Vans RV6, N43BL, experimental amateur built airplane, experienced an in-flight loss of control while maneuvering over level terrain adjacent to the Inyokern, California, airport. Visual meteorological conditions prevailed, and no flight plan was filed. The private pilot was seriously injured, and the passenger received minor injuries. The purpose of the flight and the time and point of departure have not been determined. According to a witness, during the last 20 to 30 seconds of the airplane's flight, it entered a left turn with a bank angle which varied from 10 to 20 degrees. The airplane's maximum elevation over the ground was 150 feet, and it steadily decreased during the turn. The witness stated that as the airplane turned through 270 degrees of arc its left bank angle increased to 80 or 90 degrees. The airplane's descent rate increased, and it collided with the terrain while still in a left wing low attitude. No smoke or fire was observed during the flight. NTSB Identification: FTW96FA279A Accident occurred JUN-29-96 at BOULDER, CO Aircraft: PREVATT RV-6, registration: N194JP Injuries: 2 Fatal, 2 Uninjured. On June 29, 1996, approximately 1500 mountain daylight time, N194JP, a Prevatt RV-6, collided in midair with N103LM, a Burkhart Grob G103C Twin III Acro, over Boulder Colorado. N194JP was destroyed and N103LM sustained minor damage. The private pilot and student pilot-passenger aboard N194JP were fatally injured. The private pilot and passenger aboard N103LM were not injured. Visual meteorological conditions prevailed, and neither pilot had filed a flight plan. Both flights were being conducted under Title 14 CFR Part 91. The flight of N194JP originated at Longmont, Colorado, on June 29, 1996 approximately 1445. The flight of N103LM originated at Boulder, CO, on June 29, 1996, approximately 1415. According to the pilot of N103LM, his passenger was feeling ill and they decided to land. He approached Boulder Municipal Airport from the south at 6,100 feet msl (mean sea level). He observed two airplanes pass off his right wing traveling in the opposite direction. His front seat passenger then reported an approaching airplane directly in front. The pilot made a steep left bank and deployed his dive brakes. Evidence indicates N103LM's right wing tip struck N194JP's propeller, right main wheel, and lower cowling. N103LM continued the left bank and landed safely on runway 8R. N194JP was seen to make a steep right bank and fly towards the northwest. The pilot transmitted a distress call on the UNICOM frequency. Witnesses said the airplane then made a steep left turn, stalled, and impacted in a lake near the runway threshold. NTSB Identification: MIA96LA201 Accident occurred AUG-03-96 at TOA BAJA, PR Aircraft: JOSE HERNANDEZ RV4, registration: N113JM Injuries: 1 Serious. On August 3, 1996, about 1040 Atlantic standard time, a privately owned homebuilt RV-4, N113JM, crashed during an attempted takeoff from a private grass strip near Toa Baja, Puerto Rico. Visual meteorological conditions prevailed at the time and no flight plan was filed for the 14 CFR Part 91 personal flight. The airplane was substantially damaged and the pilot, the sole occupant, sustained serious injuries. The flight was originating at the time of the accident. During takeoff from a private grass strip, the engine experienced a total loss of power. The airplane then crashed into an open field. Preliminary examination of the airplane by an FAA Inspector revealed water contamination of the fuel system. NTSB Identification: FTW96LA348 Accident occurred AUG-16-96 at VAN HORN, TX Aircraft: VANS RV-4, registration: XBGKP Injuries: 1 Minor. One August 16, 1996, at 1412 central daylight time, Vans RV-4, Mexican registration XBGKP, was substantially damaged during a forced landing near Van Horn, Texas. The private pilot was not injured. The aircraft was owned and operated by a Mexican national, under Title 14 CFR Part 91. The flight originated from Culberson County Airport near Van Horn, Texas, at 1400. Visual meteorological conditions prevailed for the cross country flight and a flight plan was not filed. According to the pilot, the airplane experienced a loss of power, and he performed a forced landing. During the landing rollout, the left wing impacted a pole and brush, causing structural damage to the aircraft. NTSB Identification: CHI96FA334 Accident occurred SEP-17-96 at MUNCIE, IN Aircraft: Thocker RV-4, registration: N952JT Injuries: 2 Fatal. On September 17, 1996, at 1355 eastern standard time, a Thocker RV-4, N952JT, was destroyed on impact with the terrain, following the in-flight separation of the right horizontal stabilizer. The accident occurred about 10 miles northwest of Muncie, Indiana. Witnesses stated they saw the airplane conducting aerobatic maneuvers prior to the accident. The pilot and one passenger received fatal injuries. The personal 14 CFR Part 91 flight was operating in visual meteorological conditions. No flight plan was on file for the local flight. The flight departed Muncie, Indiana, at 1345.