Accident · 1998-08-28

NTSB case CHI98LA342 · MBB BK-117 · Part 91

What the record says

Event date: 1998-08-28
Event type: Accident
Highest injury level: No injuries
Aircraft: MBB BK-117 (N230H)
Operating rule: Part 91
Operator: St. Louis Helicopters LLC Operator named in NTSB report
Operated by (per NTSB report): ST. LOUIS HELICOPTERS

Probable cause

the pilot's failure to assure the engine cowling was secured during the aircraft preflight which resulted in the cowling separating from the helicopter and damaging the main rotor and tail rotor system. Factors associated with the accident were the cowling not being secured and inadequate design of the latching system by the manufacturer.

Source: NTSB case CHI98LA342

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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