Casualties unknown

1999-04-25: Beech 36TC (N36MN) — Lake Elsinore, CA

Lake Elsinore, CA, US

On April 25, 1999, a Beech 36TC (registration N36MN) was involved in an aviation accident near Lake Elsinore, CA. Investigators recorded the probable cause as: Fuel starvation due to the pilot's inadequate preflight inspection procedures and his failure to accurately determine the amount of fuel onboard prior to departure. A factor in the accident was the erratic fuel quantity sensor in the left fuel tank. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A pilot's reliance on faulty fuel gauges resulted in fuel exhaustion, a forced landing on an interstate highway, and collision with a pickup truck.

Accident Overview

The pilot reported that the aircraft had been in a local paint shop for repainting over the past 60 days. This flight was the first after pickup. The pilot did not use a dipstick to determine fuel load, instead relying on gauges and consumption calculations.

Flight and Engine Failure

On the morning of the accident, the pilot flew from his home base to an airport in the Southern California interior using the right fuel tank. On engine start for the return leg, he selected the left tank. While en route, the engine smoothly quit. He switched fuel tanks, turned on the electric boost pump, and attempted to restart without success. As the aircraft descended, he selected a clear area on the shoulder of an interstate highway for landing. Nearing touchdown, he maneuvered to avoid a highway sign, and the right wing contacted the back of a pickup truck.

Post-Accident Findings

As the aircraft touched down, the engine restarted and went to full power. The aircraft was recovered without disassembly or disturbance to any system. Fuel tanks and lines were intact with no evidence of leakage. One pint of fuel was drained from the left tank; the right tank contained 15 gallons. Examination of the fuel indicating system revealed the right tank sending unit and cockpit gauge were accurate. The left tank sending unit and gauge displayed erratic indications: on initial power-up it showed 3/4 tank; subsequent shutdowns and power-ups yielded 1/4, full, and again 3/4. No discrepancies were noted with the engine.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001205X00508. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.