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United B777 engine failure

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United B777 engine failure

Old 16th Jul 2021, 13:15
  #281 (permalink)  
 
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... joining several more of its less newsworthy stablemates there.

AFAIK, there are no longer any non-ER B772s flying anywhere in the world.
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Old 30th Aug 2021, 17:11
  #282 (permalink)  
 
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Sixty (60) days after the last publicly stated projection of when these aircraft could be expected to return to scheduled service (see a few posts above), today's Wall Street Journal publishes an article describing the projected return as occurring early next year, rather than the timing this summer previously hoped-for by United.

Article relates that Pratt & Whitney is continuing work on blade inspection methods (reportedly, ultrasound) and that Boeing is working on modification of the engine cover. Not new information itself, IIRC.

United executive quoted as noting certain constraints on system flight ops imposed by continuing unavailability of these aircraft.
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Old 23rd Dec 2021, 00:11
  #283 (permalink)  
 
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Several major news outlets reporting FAA has issued a statement directing changes to PW4000 powerplants on United's 777s, aimed at strengthening the covers [correction: cowlings]. Also directing inspections. As described in this reporting, these directions are aligned with previously announced FAA guidance or updates.

Boeing, Pratt & Whitney, and United each issued statements (reportedly) generally signaling concurrence with FAA's directives. (Not located any of the actual statements yet.)

Last edited by WillowRun 6-3; 23rd Dec 2021 at 13:33.
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Old 23rd Dec 2021, 02:30
  #284 (permalink)  
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Yeah UAL should make those 777’s into beer cans .
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Old 23rd Dec 2021, 09:15
  #285 (permalink)  
 
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Originally Posted by WillowRun 6-3 View Post
Several major news outlets reporting FAA has issued a statement directing changes to PW4000 powerplants on United's 777s, aimed at strengthening the covers.
Fair enough, I struggle with legal terminology.

"The proposed directives would require: strengthening engine cowlings, enhanced engine fan-blade inspections and inspections of other systems and components, [and] specific corrective actions depending on the inspection results"

FAA proposes modifications and inspections of Boeing 777 engines
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Old 23rd Dec 2021, 19:10
  #286 (permalink)  
 
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Nothing surprising here. It's a big no-no that the engine nacelle fell apart after a fan blade out event - that's not supposed to happen (and it's long been recognized as a safety of flight concern). I'm sure Boeing has been working on a design change for the PW4000/112" nacelle (especially after it happened a second time - indicating the first one wasn't some sort of fluke). But Boeing can't mandate that operators incorporate the retrofit - only the regulators can do that.
Similarly, two FBO events on the PW4000/112" (in a fairly short period of time) was pretty damning evidence that the existing inspection requirements were inadequate and needed to be changed. Again, Pratt can recommend the change, but you need the feds to mandate it.
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