![[777] loses cowling on departure from DEN](/iconimages/united/777-loses-cowling-departure-den_ltr.gif)
[777] loses cowling on departure from DEN
02-25-2021, 06:13 AM
#101
Prime Minister/Moderator
Joined APC: Jan 2006
Position: Engines Turn Or People Swim
Posts: 39,261
Boeing was planning to redesign (strengthen) and replace 777 fan cowls before the two recent incidents...
https://www.foxbusiness.com/markets/...ecent-failures
https://www.foxbusiness.com/markets/...ecent-failures
02-25-2021, 10:41 AM
#103
Perennial Reserve
Joined APC: Jan 2018
Posts: 11,498
Originally Posted by PurpleToolBox
As a result of the first failure in 2018, in 2019 the FAA directed P&W to inspect all PW4000 fan blades using a newer inspection process. I've not read anything yet that said this motor had been reinspected.
WASHINGTON, Feb 24 (Reuters) - A United Airlines plane with a Pratt & Whitney engine that failed on Saturday had flown fewer than half the flights allowed by U.S. regulators between fan blade inspections, two sources with knowledge of the matter said.
The Boeing Co 777 plane had flown nearly 3,000 cycles, equivalent to one take-off and landing, which compares to the checks every 6,500 cycles mandated after a separate United engine incident in 2018, said the sources.
They sought anonymity as they were not authorised to speak publicly.
Pratt, the maker of the PW4000 engines, advised airlines on Monday to step up checks to every 1,000 cycles, in a bulletin seen by Reuters. It did not immediately respond to a request for comment.
On Tuesday, the U.S. Federal Aviation Administration said it was ordering immediate inspections of 777 planes with PW4000 engines before a return to flight, going further than Pratt.
Japan and South Korea have also grounded the planes for fan blade checks. (Reporting by David Shepardson in Washington; writing by Jamie Freed)
The Boeing Co 777 plane had flown nearly 3,000 cycles, equivalent to one take-off and landing, which compares to the checks every 6,500 cycles mandated after a separate United engine incident in 2018, said the sources.
They sought anonymity as they were not authorised to speak publicly.
Pratt, the maker of the PW4000 engines, advised airlines on Monday to step up checks to every 1,000 cycles, in a bulletin seen by Reuters. It did not immediately respond to a request for comment.
On Tuesday, the U.S. Federal Aviation Administration said it was ordering immediate inspections of 777 planes with PW4000 engines before a return to flight, going further than Pratt.
Japan and South Korea have also grounded the planes for fan blade checks. (Reporting by David Shepardson in Washington; writing by Jamie Freed)
02-25-2021, 10:55 AM
#104
Banned
Joined APC: Feb 2011
Position: 756 Left Side
Posts: 1,629
Originally Posted by Excargodog
THAT is going to add significantly to the cost of maintenance.
Crazy Times.
(Nice job to the crew and also the crew of 1832)
Always
FS, FP & FtC
Motch
02-26-2021, 11:51 AM
#107
Perennial Reserve
Joined APC: Jan 2018
Posts: 11,498
Originally Posted by Andy
Thermal acoustic image inspection. Probably not very expensive.
EAST HARTFORD, CONN., February 23, 2021 – The U.S. Federal Aviation Administration has issued an Airworthiness Directive requiring inspection of fan blades on the Pratt & Whitney PW4000-112” engines prior to their return to service.
The process requires the shipment of fan blades to Pratt & Whitney where Thermal Acoustic Imaging (TAI) inspection will be used to confirm airworthiness. The inspection is performed by Pratt & Whitney’s FAA-authorized repair station.
The process requires the shipment of fan blades to Pratt & Whitney where Thermal Acoustic Imaging (TAI) inspection will be used to confirm airworthiness. The inspection is performed by Pratt & Whitney’s FAA-authorized repair station.
It may or may not be cheap but it probably won’t be quick...
Last edited by Excargodog; 02-26-2021 at 12:04 PM.
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