Narrative:
While climbing through 24,000 feet, CRJ200's No. 1 engine experienced a fan disk separation, which resulted in the separation of the inlet, fan rotor assembly, the fan containment case, and portions of the thrust reverser.
The airplane's flight crew declared an emergency and immediately returned and landed uneventfully at the Denver International Airport at 17:30. The aircraft itself sustained minor damage to the fuselage, left engine pylon, and tail section during the engine separation.
PROBABLE CAUSE: "A fatigue fracture, which resulted in the separation of the No.1 engine fan disk. Contributing factors in the accident were the operators' maintenance personnel lack of training to be able to detect arc-out damage on the fan disk, and the fan disk manufacturer's inadequate electro-chemical etch match marking process of the fan disk to forward fan shaft that allowed for the initiation of a fatigue point that was undetected at the time of original manufacture."
| Status: | Accident investigation report completed and information captured |
| Date: | Thursday 25 January 2007 |
| Time: | 16:50 |
| Type: |  Canadair CL-600-2B19 Regional Jet CRJ-200LR |
| Operated by: | Mesa Airlines |
| On behalf of: | America West Express |
| Registration: | N17337 |
| MSN: | 7337 |
| First flight: | 1999 |
| Total airframe hrs: | 19629 |
| Cycles: | 15438 |
| Engines: | 2 General Electric CF34-3B1 |
| Crew: | Fatalities: 0 / Occupants: 4 |
| Passengers: | Fatalities: 0 / Occupants: 50 |
| Total: | Fatalities: 0 / Occupants: 54 |
| Aircraft damage: | Minor |
| Aircraft fate: | Repaired |
| Location: | near Woodland Park, CO ( United States of America)
|
| Phase: | En route (ENR) |
| Nature: | Domestic Scheduled Passenger |
| Departure airport: | Denver International Airport, CO (DEN/KDEN), United States of America |
| Phoenix-Sky Harbor International Airport, AZ (PHX/KPHX), United States of America | |
| Flightnumber: | 2985 |
While climbing through 24,000 feet, CRJ200's No. 1 engine experienced a fan disk separation, which resulted in the separation of the inlet, fan rotor assembly, the fan containment case, and portions of the thrust reverser.
The airplane's flight crew declared an emergency and immediately returned and landed uneventfully at the Denver International Airport at 17:30. The aircraft itself sustained minor damage to the fuselage, left engine pylon, and tail section during the engine separation.
Probable Cause:
PROBABLE CAUSE: "A fatigue fracture, which resulted in the separation of the No.1 engine fan disk. Contributing factors in the accident were the operators' maintenance personnel lack of training to be able to detect arc-out damage on the fan disk, and the fan disk manufacturer's inadequate electro-chemical etch match marking process of the fan disk to forward fan shaft that allowed for the initiation of a fatigue point that was undetected at the time of original manufacture."
Accident investigation:
 |
|
Classification:
Forced landing on runway
Sources:
» NTSBPhotos
Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Denver International Airport, CO to Phoenix-Sky Harbor International Airport, AZ as the crow flies is 962 km (601 miles).
Distance from Denver International Airport, CO to Phoenix-Sky Harbor International Airport, AZ as the crow flies is 962 km (601 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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