Incident · 1991-01-03

NTSB case CHI91IA058 · BOEING B727-223 · Part 121

What the record says

Event date: 1991-01-03
Event type: Incident
Highest injury level: Minor injury
Aircraft: BOEING B727-223 (N6821)
Operating rule: Part 121
Operator: AMERICAN AIRLINES, INC. Operator named in NTSB report
Operated by (per NTSB report): AMERICAN AIRLINES, INC.

Probable cause

AN OIL LEAK ORIGINATING FROM THE AUXILIARY POWER UNIT WHICH CREATED SMOKE IN THE PASSENGER CABIN AFTER IT PASSED THROUGH THE AIR CONDITIONING/HEATING SYSTEM EQUIPMENT AND ASSOCIATED DUCT WORK.

Source: NTSB case CHI91IA058

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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