Accident · 1989-11-29

NTSB case SEA90LA025 · HILLER UH-12E · Part 133

What the record says

Event date: 1989-11-29
Event type: Accident
Highest injury level: No injuries
Aircraft: HILLER UH-12E (N9762C)
Operating rule: Part 133
Operator: GLACIER HELICOPTERS Operator named in NTSB report
Operated by (per NTSB report): GLACIER HELICOPTERS

Probable cause

LOSS OF ENGINE POWER DUE TO FATIGUE FAILURE OF THE IMPELLER. THE HELICOPTER WAS SUBSTANTIALLY DAMAGED AS A RESULT OF A ROLL-OVER ON UNEVEN TERRAIN.

Source: NTSB case SEA90LA025

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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