Accident · 1992-08-18

NTSB case NYC92LA166 · MITSUBISHI MU-2-60 · Part 135

What the record says

Event date: 1992-08-18
Event type: Accident
Highest injury level: No injuries
Aircraft: MITSUBISHI MU-2-60 (N66LA)
Operating rule: Part 135
Operator: EPPS AIR SERVICE INC Operator named in NTSB report
Operated by (per NTSB report): EPPS AIR SERVICE

Probable cause

THE IN-FLIGHT SEPARATION OF A PROPELLER BLADE AS A RESULT OF FATIGUE CRACKING INITIATED FROM MULTIPLE SITES LOCATED AT CORROSION PITS IN THE BALANCING HOLE. CONTRIBUTING FACTORS IN THE ACCIDENT WERE: THE FAILURE TO DETECT THE CORROSION DURING THE LAST OVERHAUL PROCEDURE; AND A COMPLETE LOSS OF ELECTRICAL POWER AS RESULT OF THE SEPARATED BLADE BREAKING THE ELECTRICAL LINES.

Source: NTSB case NYC92LA166

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.

All incidents →