Incident · 1998-05-04

NTSB case NYC98IA106 · Beech 1900D · Part 121

What the record says

Event date: 1998-05-04
Event type: Incident
Highest injury level: No injuries
Aircraft: Beech 1900D (N832CA)
Operating rule: Part 121
Operator: operator not named in the NTSB record

Probable cause

Improper maintenance which resulted in a cross threaded\ mistapped counterweight bolt hole, and the subsequent failure of the propeller counterweight clamp assembly. Also causal was the inadequate inspection of the counterweight clamp threads by maintenance personnel which failed to detect the damaged counterweight threads.

Source: NTSB case NYC98IA106

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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