Accident · 1993-06-17

NTSB case ANC93LA095 · Bell B-3 · Part 91

What the record says

Event date: 1993-06-17
Event type: Accident
Highest injury level: No injuries
Aircraft: Bell B-3 (N21424)
Operating rule: Part 91
Operator: Rocky Mountain Helicopters Operator named in NTSB report
Operated by (per NTSB report): ROCKY MOUNTAIN HELICOPTERS INC

Probable cause

THE FAILURE OF THE TAIL ROTOR DRIVE SHAFT COUPLING AND THE INADEQUATE INSPECTION OF THE TAIL ROTOR DRIVE SYSTEM BY COMPANY MAINTENANCE PERSONNEL AFTER THE FIRST TAIL ROTOR STRIKE.

Source: NTSB case ANC93LA095

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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