Incident · 2007-01-25

NTSB case DEN07IA055 · Bombardier, Inc. CL-600-2B19 · Part 121

What the record says

Event date: 2007-01-25
Event type: Incident
Highest injury level: No injuries
Aircraft: Bombardier, Inc. CL-600-2B19 (N17337)
Operating rule: Part 121
Operator: MESA AIRLINES, INC. Operator named in NTSB report
Operated by (per NTSB report): MESA AIRLINES INC

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.

Source: NTSB case DEN07IA055

Flight crew

Flight-crew details for this event aren't in the NTSB database extract we hold (its coverage starts with 2008 events) — a gap in our data, not an absence of crew.

Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.

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