Just what you don’t want to see out of your plane window!

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It’s not the burning engine and loss of power that is the issue as the other is easily powerful enough to land with. It’s the vibration on the wing and the potential for it to be sheered.
 
The US plane manufacturer Boeing has recommended grounding dozens of its 777 aircraft around the world after one of the jets suffered an engine failure.

United Airlines and Japan's two main airlines have stopped using 62 planes. Korean Air says it will ground six.

In total, Boeing said 128 aircraft with the same engine as the Denver plane should be grounded.

"While [an] investigation is ongoing, we recommended suspending operations of the 69 in-service and 59 in-storage 777 aircraft powered by Pratt & Whitney 4000-112 engines," the company said in a statement.

( from BBC news )

Japan has requested that 777s with that Pratt and Witney engine do not operate in Japanese airspace.

Related NOTAM (Japan FIR):
Q0396/21 NOTAMN
Q) RJJJ/QAFXX/IV/NBO/E/000/999/3310N14118E999
A) RJJJ B) 2102211257 C) 2105210830 EST
E) ALL AIR CARRIERS OPR(TAKING-OFF/LANDING AND OVER FLT) WI THE
TERRITORY OF JAPAN ARE REQUESTED TO AVOID USING BOEING 777 EQUIPPED
WITH PW4000 SERIES ENGINES UNTIL FURTHER NOTICE
 
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I'm glad for my share portfolio's sake that it was a Pratt and Whitney engine and not a Rolls Royce.

I'm also glad that no one was hurt by the falling debris.
 
It’s not the burning engine and loss of power that is the issue as the other is easily powerful enough to land with. It’s the vibration on the wing and the potential for it to be sheered.
It's none of those, but the flying bits of fan blades that could penetrate the cabin.

Metal fatigue on those P&W engines was already being investigated prior to this one
 
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