Incident · 1989-09-05

NTSB case CHI89IA179 · BOEING 767-231 · Part 121

What the record says

Event date: 1989-09-05
Event type: Incident
Highest injury level: Minor injury
Aircraft: BOEING 767-231 (N608TW)
Operating rule: Part 121
Operator: TRANS WORLD AIRLINES Operator named in NTSB report
Operated by (per NTSB report): TRANS WORLD AIRLINES INC.

Probable cause

THE RADAR CONTROLLLER'S FAILURE TO MAINTAIN RADAR SEPARATION. FACTORS CONTRIBUTING TO THE INCIDENT WERE: MISUNDERSTANDING OF AN ATC INSTRUCTION BY THE PILOT OF THE INCIDENT AIRPLANE, AND UNCLEAR PHRASEOLOGY USED IN THE INSTRUCTIONS ISSUED BY THE RADAR CONTROLLER.

Source: NTSB case CHI89IA179

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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