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SEA84IA168

1984-07-09 · PORTLAND, Oregon, United States · None · 1 aircraft · Status: Completed

N9015U has since been reassigned. It is now registered to a different aircraft (MILLER GREGORY SCOTT GOT ROCKS, built 2008), which was not involved in this event.

Aircraft involved

Factual narrative

AFTER TAKEOFF, THE ACFT WAS CLIMBING THRU ABOUT 4000 FT WHEN THE APU FIRE WARNING LIGHT ILLUMINATED. THE FLT CREW DISCHARGED THE FIRE EXTINGUISHING UNITS & REQUESTED AN EMERGENCY LANDING. A TEARDOWN OF THE APU REVEALED EVIDENCE THAT A HARD OBJECT WAS INJESTED INTO THE 1ST STAGE COMPRESSOR IMPELLER, BENDING 2 OF THE BLADES. THE OBJECT CONTINUED THRU THE ENG & IMPACTED THE EXDUCER BLADE. THE BLADE FAILED AT A CRACK & PENETRATED THE EXHAUST PIPE ASSEMBLY. HOT GASES THEN VENTED INTO THE COOLING AIR PASSAGE & OVERHEATED THE TAIL CONE & AFT PORTION OF THE APU. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1984_SEA84IA168.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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