4 ms·
https://www.aopa.org/news-and-media/all-news/2018/may/16/ntsb-finds-metal-fatigue-in-piper-wing https://www.aopa.org/news-and-media/all-news/2018/may/16/nts...
by turrican 5y ago
https://www.aopa.org/news-and-media/all-news/2018/may/16/ntsb-finds-metal-fatigue-in-piper-wing https://www.aopa.org/news-and-media/all-news/2018/may/16/nts...
Not as small of a risk as you’d expect (though not anything to seriously worry about). This metal fatigue grounded a large chunk of the US training fleet and similar cracks were frequently found in other Piper Arrows (including ours).
- voldacar 5y agoThat is actually kind of scary. How many cycles does the airframe have to go through in order for this to become a problem? I tend to think that if the FAA gave a shit about general aviation maybe we wouldn't be flying planes from the 1960s
- WalterBright 5y agoFor airliners, the airplanes are retired after a certain number of cycles. The 757 was designed for 62,000 flying hours, if I recall correctly. It's scrap after that. My dad's B-17 in WW2 was scrapped after 30 missions, it was considered worn out.