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SEA82DA137

1982-08-07 · SHELTON, Washington, United States · None · 1 aircraft · Status: Completed

Airport SHN

N10966 has since been reassigned. It is now registered to a different aircraft (CURTISS WRIGHT CW-1, built 1931), which was not involved in this event.

Aircraft involved

Factual narrative

DURING A SIGHT SEEING FLIGHT THE PILOT SMELLED A BURNING ODOR AND PREPARED TO MAKE A PRECAUTIONARY OFF-AIRPORT LANDING. SHORTLY THEREAFTER, ENGINE RPM DECAYED AND AN AUTOROTATIVE LANDING WAS EFFECTED ON A DIRT ROAD. ON TOUCHDOWN, THE MAIN ROTOR BLADES FLEXED DOWNWARD, STRIKING THE TAIL BOOM AND SEPARATING IT FROM THE FUSELAGE. THE INVESTIGATION REVEALED THETURBINE-TO-COMPRESSOR COUPLING WAS BOUND TO THE POWER TURBINE SHAFT WHICH SLEEVES IT. THERE WAS EVIDENCE OF THERMAL AND MECHANICAL DISTRESS TO THE COMPONENTS, CAUSED BY OVER-HEATING AND COKING OF THE OIL. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1982_SEA82DA137.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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External sources are reported, not agency: signal that something happened, not fact about what happened.