Accident · 1989-02-09

NTSB case FTW89MA047 · MCDONNELL DOUGLAS DC-9-32F · Part 121

What the record says

Event date: 1989-02-09
Event type: Accident
Highest injury level: Fatal injury
Aircraft: MCDONNELL DOUGLAS DC-9-32F (N935F)
Operating rule: Part 121
Operator: operator not named in the NTSB record

Probable cause

IMPROPER IN-FLIGHT PLANNING/DECISION BY THE CAPTAIN (PILOT-IN-COMMAND) AND HIS IMPROPER USE OF THE PORTABLE OXYGEN SYSTEM, WHICH RESULTED IN HIS INCAPACITATION DUE TO HYPOXIA. FACTORS RELATED TO THE ACCIDENT WERE: INADEQUATE MAINTENANCE/INSPECTION OF THE AIRCRAFT BY COMPANY MAINTENANCE BY FAILING TO REINSTALL THE AFT PRESSURE BULKHEAD HATCH (INSPECTION DOOR) AND POOR CREW COORDINATION.

Source: NTSB case FTW89MA047

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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