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ASN Wikibase Occurrence # 165669
Last updated: 3 October 2020
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Type:Silhouette image of generic B763 model; specific model in this crash may look slightly different
Boeing 767-322ER
Owner/operator:United Airlines
Registration: N662UA
C/n / msn: 27159/513
Fatalities:Fatalities: 0 / Occupants: 203
Aircraft damage: Substantial
Location:near Chicago O'Hare Intn'l Airport, IL (ORD) -   United States of America
Phase: Initial climb
Nature:Passenger - Scheduled
Departure airport:Chicago, IL (ORD)
Destination airport:Sao Paulo, (SBGR)
Investigating agency: NTSB
The airplane impacted a flock of canvas back ducks after takeoff while climbing through 800 feet above ground level. Night visual meteorological conditions prevailed at the time of the accident. The captain reported that the landing lights illuminated the ducks and in less than a second the airplane struck the ducks. The left engine fan blade was struck by 3-5 ducks at the midspan shroud liberating the fan blade tip, which was contained. The impact resulted in movement of the variable stator vanes and 2.5 bleed valves. The engine then made an uncommanded shutdown. The hydraulic pressure supply manifold broke due to high vibratory fatigue after the impact, which also resulted in minimizing the amount of fuel released into the engine nacelle. The airplane returned for landing at the departure airport without further incident.
Probable Cause: The contained fan blade tip separation following the ingestion of several birds into the left engine during takeoff and the lack of an adequate response time available to crew to avert the bird strike.




Photo of N662UA courtesy

Amsterdam - Schiphol (EHAM / AMS)
30 July 2015; (c) Gerard Helmer

Revision history:

22-Apr-2014 06:15 Katonk2014 Added
03-May-2014 10:28 Katonk2014 Updated [Aircraft type]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
04-Dec-2017 18:33 ASN Update Bot Updated [Cn, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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