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Ethan Klapper
FAA issues emergency airworthiness directive for 737 Classic and NG aircraft coming out of storage. Fifth stage bleed air check valves were getting corroded and stuck in the open position, leading to compressor stalls.
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Ethan Klapper Jul 24
Replying to @ethanklapper
For those unfamiliar with bleed air, it's compressed air generated by the aircraft's engines or APU. On the 737, it powers air conditioning, pressurization, thermal anti-icing, engine starting, and pressurizes hydraulic reservoirs and water tanks
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Ethan Klapper Jul 24
Replying to @ethanklapper
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Jason Rabinowitz Jul 24
Replying to @ethanklapper
If this is happening to the NG after just a few weeks or months of being parked, what are they going to find on MAX aircraft that have been grounded for over a year?
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Ethan Klapper Jul 24
Replying to @AirlineFlyer
Well this NPRM is in the public inspection docket today and will be published shortly
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Gary Weissel Jul 24
It's a pretty quick inspection. Did one today on an NG we were getting from storage into mtc. Took about an HR. Valves are easy to get to and remove. Luckily they passed the inspection. Replacements aren't cheap as we priced a few out just in case.
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jetconsultant Jul 24
Saw the aftermath of a stuck open one lately ...not pretty.
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BJH Aug 1
Replying to @ethanklapper
Boeing needs to get out of commercial aviation. They suck at it and it's draining their coffers. Ch 11 restructuring with a focus on paying off debt and military and defense contracts
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