Both in instruction and maintenance....The acronym works. I have seen so many posts, that are trying to get around a 337. To put into context, any time you see the word (major), you will need a APIA sing off. If you do anything with the leading edge you will need an APIA sing off. Part 43 appendix D spells out what an owner can do. It actually gives you a lot of leeway). You can do a lot with the engine, With out any observation, yet, if you have done something, Like connecting a ground cable to the fire wall from your starter, or such, make sure you tell your mechanic, It is so easy to miss something that looks good, yet, could cause problems. Sometimes, a minor alteration will need a sing off.That's where it gets interesting, and you need a good mechanic, or lawer
Bruce Fenstermacher wrote:I think you meant Part 43.13 appendix A
Or FAR Part 43, Appendix A.
John Renwick
Minneapolis, MN
Former owner, '55 C-170B, N4401B
'42 J-3 Cub, N62088
'50 Swift GC-1B, N2431B, Oshkosh 2009 Outstanding Swift Award, 2016 Best Continuously Maintained Swift
"Brad, you mean all I've had to do is get my IA to sing. Would that be solo or could they be accompanied? "...-Bruce Fenstermacher, Spelling-Nazi.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention. An originality nut (mostly) for the right reasons.
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.
I have seen so many posts, that are trying to get around a 337. To put into context, any time you see the word (major), you will need a APIA sing off. If you do anything with the leading edge you will need an APIA sing off. Part 43 appendix D spells out what an owner can do. It actually gives you a lot of leeway). You can do a lot with the engine, With out any observation, yet, if you have done something, Like connecting a ground cable to the fire wall from your starter, or such, make sure you tell your mechanic, It is so easy to miss something that looks good, yet, could cause problems. Sometimes, a minor alteration will need a sing off.That's where it gets interesting, and you need a good mechanic, or lawer 
