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Atlas / NTSB / SEA86LA089

NTSB CAROL · Event

Event SEA86LA089

1986-03-29 WALLA WALLA, Washington, United States None 1 aircraft Status: Completed

Aircraft involved

Factual narrative

A CATASTROPHIC FAILURE OF THE PLANETARY GEAR OF THE TRANSMISSION OCCURRED ABOUT 51 FLIGHT HOURS AFTER OVERHAUL. DURING FORCED LANDING A HARD LANDING OCCURRED SEVERING THE TAIL BOOM. A FIRE THEN ERUPTED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1986_SEA86LA089.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.