3 ms·
Huh. When I was an engineer (civilian) working on helicopters at a test squadron (HX-21), they put their aircraft in phase every 180 days, flight hours or no. B
by engi_nerd 10y ago
Huh. When I was an engineer (civilian) working on helicopters at a test squadron (HX-21), they put their aircraft in phase every 180 days, flight hours or no. But I guess the key words are "test squadron".
The rotor hub, transmission, and tail rotor are mechanically complex, but there are fighter aircraft out there with way more mechanically complex systems (F-35B lift system comes to mind).
- cmurf 10y agoIt could be that it has a special, experimental, or provisional airworthiness certificate, in which case that certification determines inspections rather than FARs. If it had none of those, and wasn't an aircraft used for hire, then the annual inspection applies. And all that means is that the requirements for an annual inspection are met within the previous 12 calendar months, so they could certainly do 1/2 the required annual inspection every 180 days.
- engi_nerd 10y agoYou may be right. I am not at all knowledgeable about airworthness certificates. I did assist with supplying engineering documentation for flight clearances, but those are not the same thing.