DELEQ wrote:
Hi Matt,
In my opinion the Problem is that, as you quoted correctly, AD 50-38-01 Applies to All Model AT-6 Series Aircraft, but not the T-6G Model, while the Wing Angle AD does. I was at first also unsure whether AD 50-38-01 is also valid for the “G” Model, but if you pull up the ADs on the FAA website sorted by models, it shows up for all the AT-6 Aircrafts but not for the T-6G.
I have heard that this comes from the fact that all the T-6G were remanufactured from all the different AT-6 models around 1949/1950. At this time they used better corrosion protection, at least that’s what I heard.
So I think AD 50-38-01 is no substitute for the Wing Angle AD, for two reasons:
-It deals with corrosion and detecting it, while the Wing Angle AD deals with Fatigue cracking
-It is only applicable to the AT-6 Aircrafts, while the Wing Angle AD applies to all AT-6 / T-6 models, including the T-6G.
Stefan
Stefan, the AD reads ALL AT-6 Series, is the T-6G not part of the series ? The AD does not say SNJ, so are they exempt ? but the SNJ is part of the series as is the T-6G. When the T-6G was remanufactured, they did not replace skins or parts other than those needed to bring the airframe up to a set standard.
The better corrosion protection on the G models does nothing to prevent corrosion caused by in-correct heat treating of the aluminum, that can only be done by replacement of parts.