---------------------------------------------------------- Pulsar-List Digest Archive --- Total Messages Posted Thu 07/18/13: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:18 PM - Re: Another nose gear failure (barrynorman@comcast.net) 2. 01:36 PM - Re: Another nose gear failure (GREGSMI@aol.com) ________________________________ Message 1 _____________________________________ Time: 01:18:04 PM PST US From: barrynorman@comcast.net Subject: Re: Pulsar-List: Another nose gear failure Greg, Are these nose gears on planes before the Skystar nose gear? Barry ----- Original Message ----- From: GREGSMI@aol.com Sent: Wednesday, July 17, 2013 9:15:41 PM Subject: Pulsar-List: Another nose gear failure We have another nose gear failure, this one caught by the owner, during an inspection. In this case, the weld on the back side of the collar had crack ed. Fortunately, this was caught before the nose gear fell off. This is the forth failure I know about in the last two years in the United States. I have talked with Alan Gill in the UK and he says they had 4 =93 5 failures and have started modifying the gears to a sleeve and bolt concept. The issue is that the majority of spindle failures have been insi de the collar thus an inspection may not reveal the failure until it happen s. If a total failure occurs it can cause considerable damage to the aircra ft, imagine landing your plane with the front wheel and fork missing. It is difficult to say what is causing the failures but if you are loading the nose gear, an example is 582 flown with full header tank or all 912 =99s, where the nose gear weight is high, or using non hard surface runw ays, then the nose gear is carrying a lot of weight. In any event, given the crack found today on a 912 aircraft that has been i n service for a while, it is safe to say that all nose gears should be care fully inspected for cracks in the weld area and also check the spindle to a ssure it is straight. If bent or a crack has formed, the gear needs immedia te attention. Since the collar may hide a fatigue crack in the spindle, eve n these inspections may not reveal a problem. We have two engineers in our group that are working on a simple fix, simila r to that used in the UK. They should have it completed this week. When the details are worked out, the repair will be offered to the group. Drawings will be provided and if desired, they can provide a complete repair. Be safe, ============ == ________________________________ Message 2 _____________________________________ Time: 01:36:47 PM PST US From: GREGSMI@aol.com Subject: Re: Pulsar-List: Another nose gear failure Yes, this is the Aerodesigns nose gear. In a message dated 7/18/2013 3:18:27 P.M. Central Daylight Time, barrynorman@comcast.net writes: Greg, Are these nose gears on planes before the Skystar nose gear? Barry ____________________________________ From: GREGSMI@aol.com Sent: Wednesday, July 17, 2013 9:15:41 PM Subject: Pulsar-List: Another nose gear failure We have another nose gear failure, this one caught by the owner, during an inspection. In this case, the weld on the back side of the collar had cracked. Fortunately, this was caught before the nose gear fell off. This is the forth failure I know about in the last two years in the United States. I have talked with Alan Gill in the UK and he says they had 4 =93 5 failures and have started modifying the gears to a sleeve and bolt concept . The issue is that the majority of spindle failures have been inside the collar thus an inspection may not reveal the failure until it happens. If a total failure occurs it can cause considerable damage to the aircraft, imagine landing your plane with the front wheel and fork missing. It is difficult to say what is causing the failures but if you are loading the nose gear, an example is 582 flown with full header tank or all 912 =99s, where the nose gear weight is high, or using non hard surface runways, then the nose gear is carrying a lot of weight. In any event, given the crack found today on a 912 aircraft that has been in service for a while, it is safe to say that all nose gears should be carefully inspected for cracks in the weld area and also check the spindle to assure it is straight. If bent or a crack has formed, the gear needs immediate attention. Since the collar may hide a fatigue crack in the spin dle, even these inspections may not reveal a problem. We have two engineers in our group that are working on a simple fix, similar to that used in the UK. They should have it completed this week. W hen the details are worked out, the repair will be offered to the group. Drawi ngs will be provided and if desired, they can provide a complete repair. Be safe, Greg arget="_blank">http://www.matronics.com/Navigator?Pulsar-List tp://forums.matronics.com _blank">http://www.matronics.com/contribution ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pulsar-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pulsar-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/pulsar-list Browse Digests http://www.matronics.com/digest/pulsar-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.