Accident · 1988-05-09

NTSB case CHI88FA110 · BOEING 747-136 · Part 129

What the record says

Event date: 1988-05-09
Event type: Accident
Highest injury level: No injuries
Aircraft: BOEING 747-136 (NGAWND)
Operating rule: Part 129
Operator: British Airways Operator named in NTSB report
Operated by (per NTSB report): BRITISH AIRWAYS

Probable cause

FAILURE OF THE NUMBER THREE FLAP TRACK DUE TO STRESS CORROSION CRACKING. FACTORS CONTRIBUTING TO THIS FAILURE ARE INSUFFICIENT DESIGN OF THE MEMBER AND INADEQUATE INSPECTION AND MAINTENANCE PROCEDURES TO DETECT CRACKS BEFORE THEY PROPAGATE TO A CRITICAL LENGTH.

Source: NTSB case CHI88FA110

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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