Originally Posted by
Ascend Charlie
This is the really scary bit - flights can be approved in time-expired airframes with time-expired components and unapproved MAJOR modifications.
You’re reading that the wrong way in terms of the unapproved modifications.
As the manufacturers aren’t likely to be around any more, a major modification might be a positive one, Ike a turbine replacing a radial.
It may be time expired in terms of what the manufacturer says, however as far as the industry, engineers and experts say, it may be fine.