Skip to content

SEA91FA175

1991-07-16 · MCCALL, Idaho, United States · Fatal · 1 aircraft · Status: Completed

Airport MYL

Aircraft involved

Probable cause & findings

PROCEDURES/DIRECTIVES WERE NOT FOLLOWED. FACTORS TO THE ACCIDENT WERE: IMPROPER FUEL BOOST PUMP SELECTOR POSITION, LEADED SPARK PLUGS AND SUNGLARE.

Factual narrative

WHILE IN THE PATTERN FOR LANDING, THE ENGINE EXPERIENCED A LOSS OF POWER. THE PILOT WAS UNABLE TO LAND ON THE RUNWAY AND A FORCED LANDING WAS INITIATED TO AN OPEN SCHOOL YARD. DURING THE EMERGENCY DESCENT, THE AIRPLANE COLLIDED WITH POWER LINES AND STRUCK THE GROUND IN A NOSE DOWN ATTITUDE, VERTICAL TO THE TERRAIN. DURING THE ON SCENE INVESTIGATION, IT WAS FOUND THAT THE SPARK PLUGS WERE COATED WITH A LAYER OF BLACK CARBON. COCKPIT INSPECTION REVEALED THAT THE AUXILIARY FUEL PUMP SWITCH WAS POSITIONED IN THE LOW SETTING. THERE WERE NO MECHANICAL FAILURES OR MALFUNCTIONS NOTED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1991_SEA91FA175.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Search this event elsewhere

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