ASN Wikibase Occurrence # 165669
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| Date: | Thursday 15 March 2007 |
| Time: | 21:35 |
| Type: |  Boeing 767-322ER |
| Owner/operator: | United Airlines |
| Registration: | N662UA |
| MSN: | 27159/513 |
| Year of manufacture: | 1993 |
| Total airframe hrs: | 60414 hours |
| Fatalities: | Fatalities: 0 / Occupants: 203 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Chicago O'Hare Intn'l Airport, IL (ORD) -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Passenger - Scheduled |
| Departure airport: | Chicago-O'Hare International Airport, IL (ORD/KORD) |
| Sao Paulo, (SBGR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20070423X00446&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 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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