| Date: | Thursday 29 July 1999 |
| Time: | 15:00 |
| Type: |  Boeing 747-269B |
| Owner/operator: | Kitty Hawk International |
| Registration: | N707CK |
| MSN: | 21541/332 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 59727 hours |
| Engine model: | Pratt & Whitney JT9D-7J |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial, repaired |
| Category: | Accident |
| Location: | near Anchorage International Airport, AK (ANC) -
 United States of America
|
| Phase: | En route |
| Nature: | Cargo |
| Departure airport: | Anchorage International Airport, AK (ANC/PANC) |
| Bangkok-Don Muang International Airport (BKK/VTBD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A Boeing 747-269B airplane, N707CK, had an uncontained engine failure during climb-out from the Anchorage International Airport, Alaska. There were no injuries to the five crewmembers aboard.
During climbout, the Boeing 747 crew noted a loud 'thump,' followed by a change in the number three engine instrument indications. One crewmember noted there was a fist-sized hole in the side of the engine cowling. The captain shut down the number three engine, returned to the departure airport, and landed without further incident. A post landing inspection revealed that the inboard aileron sustained substantial damage.
PROBABLE CAUSE: "The failure of a turbine blade, and subsequent penetration of the shroud (containment ring). A factor associated with the accident was the FAA's insufficient design standards/requirements addressed in an FAA Airworthiness Directive, which called for a strengthened containment ring. The failed containment ring was in compliance with the Air Worthiness Directive."
Accident investigation:
 |
|
Sources:
NTSB id 20001212X19142
History of this aircraft
Other occurrences involving this aircraft
| 22 March 1997 | N707CK | American International Airways | 0 | Manaus, | |
min |
Revision history:
| Date/time | Contributor | Updates |
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