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ASN Wikibase Occurrence # 248087
Last updated: 25 November 2021
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Time:c. 12:55
Type:Silhouette image of generic B772 model; specific model in this crash may look slightly different
Boeing 777-222
Owner/operator:United Airlines
Registration: N772UA
MSN: 26930/5
Fatalities:Fatalities: 0 / Occupants: 241
Other fatalities:0
Aircraft damage: Substantial
Location:near Denver International Airport (DEN/KDEN), Denver, CO -   United States of America
Phase: Take off
Nature:Passenger - Scheduled
Departure airport:Denver International Airport, CO (DEN/KDEN)
Destination airport:Honolulu-Daniel K. Inouye International Airport, HI (HNL/PHNL)
Investigating agency: NTSB
United Airlines flight UA328, a Boeing 777-200, experienced an uncontained no. 2 engine failure (PW4077) after departure from Denver International Airport (DEN/KDEN), Colorado, USA.
The aircraft took off from runway 25 at 13:04 hours local time (20:04 UTC), bound for Honolulu, Hawaii.
About four minutes after takeoff the right hand engine experienced an uncontained failure. Parts of the engine inlet cowl and fan cowls separated and came down in a residential area of Broomfield.
The flight circled back and landed safely on runway 26 at 13:28 hours.
There are no reported injuries onboard the aircraft or on the ground.

The NTSB's initial examination of the Pratt & Whitney PW4077 engine revealed that the inlet and cowling separated from the engine and that two fan blades were fractured (One fan blade was fractured near the root, an adjacent fan blade was fractured about mid-span). It appeared a portion of one blade was imbedded in the containment ring. The remainder of the fan blades exhibited damage to the tips and leading edges

On February 23, the FAA issued an emergency AD, requiring operators to perform thermal acoustic image (TAI) inspections of the 1st-stage low-pressure compressor blades on PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines, before further flight.
This action was taken in response to the Feb. 20 engine failure of United Airlines flight 328, a Boeing 777-200 aircraft.


Similar event: Feb 2018 United B777-200 uncontained engine failure




Photo of N772UA courtesy

San Francisco - International (KSFO / SFO)
28 May 2017; (c) Erik Frikke

Photo: NTSB

Photo: NTSB

Revision history:

20-Feb-2021 22:03 Geno Added
21-Feb-2021 07:03 aaronwk Updated [Source, Embed code]
21-Feb-2021 08:23 harro Updated [Source, Embed code, Narrative]
21-Feb-2021 08:42 harro Updated [Embed code, Category, Photo]
21-Feb-2021 09:20 harro Updated [Source]
21-Feb-2021 15:27 Stealthmanbob Updated [Total occupants]
24-Feb-2021 13:26 Michel Updated [Source, Damage]
24-Feb-2021 13:28 harro Updated [Source, Narrative, Photo]
24-Feb-2021 13:31 harro Updated [Source, Narrative, Photo]
06-Mar-2021 11:47 Aerossurance Updated [Embed code]
06-Mar-2021 11:49 Aerossurance Updated [Source, Embed code]

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