---------------------------------------------------------- Cessna-List Digest Archive --- Total Messages Posted Tue 12/24/02: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:54 PM - SB's (Gary Casey) 2. 09:05 PM - Clueless electrical question (Garrou, Douglas) ________________________________ Message 1 _____________________________________ Time: 12:54:23 PM PST US From: "Gary Casey" Subject: Cessna-List: SB's --> Cessna-List message posted by: "Gary Casey" <> I have seen that Cessna and other suppliers (i.e., Airborne) have recently taken this tack, writing their service bulletins in language that implies that they are mandatory and "sanctioned" by the FAA. I'm not an IA, but I agree with both replies in that compliance with the Service Bulletins themselves are absolutely not required. I'm assuming that if there is an AD and it says that one way to comply is to execute the service bulletin, that is a different matter. Gary Casey C177RG ________________________________ Message 2 _____________________________________ Time: 09:05:17 PM PST US From: "Garrou, Douglas" Subject: Cessna-List: Clueless electrical question --> Cessna-List message posted by: "Garrou, Douglas" A 1974 Cessna 172 that I fly has an electrical gremlin. The voltage light occasionally comes on at takeoff or in cruise. No apparent reason. Needle shows no discernible discharge or overcharge. Turning the master off and then back on usually extinguishes the light (one time it did not, so I just returned to base and scratched my head). Flight before last, we needed a jump to get started; could find no obvious reason that the battery would be dead (master had been turned off, etc.). On our last flight attempt, same problem, but this time the jump did nothing - cart hooked up, no juice at all apparent in the cockpit, no action from the starter. Ideas? Obviously getting A&P input is the next step, but I feel the need to educate myself somewhat first. As is probably painfully apparent from this post, I know *nothing* about electrical systems. Cheers Doug