Accident · 2006-03-15

NTSB case CHI06LA099 · Boeing 757-222 · Part 121

What the record says

Event date: 2006-03-15
Event type: Accident
Highest injury level: Serious injury
Aircraft: Boeing 757-222 (N518UA)
Operating rule: Part 121
Operator: operator not named in the NTSB record

Probable cause

An inadvertent encounter with unforecast mountain wave turbulence during cruise flight. A contributing factor was the mountain wave (terrain induced) turbulence.

Source: NTSB case CHI06LA099

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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