Incident · 1990-12-14

NTSB case DEN91IA026 · BRITISH AEROSPACE BAE 146-200 · Part 121

What the record says

Event date: 1990-12-14
Event type: Incident
Highest injury level: No injuries
Aircraft: BRITISH AEROSPACE BAE 146-200 (N609AW)
Operating rule: Part 121
Operator: AIR WISCONSIN AIRLINES LLC Operator named in NTSB report
Operated by (per NTSB report): AIR WISCONSIN, INC.

Probable cause

THE CATASTROPHIC FAILURE OF THE NO.12 BLADE ON THE 4TH STAGE TURBINE WHEEL, AND FAILURE OF COMPANY MAINTENANCE PERSONNEL TO IDENTIFY THE PREEXISTING CRACK DURING MAINTENANCE INSPECTION.

Source: NTSB case DEN91IA026

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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