Casualties unknown

Pilot loses power in both engines due to fuel exhaustion during return flight (N8212Y)

Merced, CA, US

On July 6, 1989, a Piper PA-30B-160 (registration N8212Y) operated by Larry A. Lamb was involved in an aviation accident near Merced, CA. Investigators recorded the probable cause as: The pilot's failure to ensure adequate fuel supply for the flight, which resulted in fuel exhaustion and total loss of engine power. 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 2026-06-19Data APIEditorial standards

A pilot experienced total engine failure approximately 50 nautical miles from his destination airport while attempting to divert to a nearby airfield, resulting in a terrain impact short of the runway.

What happened

Following the refueling of the aircraft's fuel tanks, the pilot departed on a return flight intended to reach his home airport. Approximately 50 nautical miles from the destination, the right engine ceased operation due to fuel exhaustion. In response to this failure, the pilot initiated a turn toward an airfield located in the vicinity.

As the aircraft approached the runway of the intended landing site, the left engine also lost power. The aircraft subsequently impacted the terrain approximately one-half mile short of the runway threshold.

The investigation

The investigation focused on the mechanical status of the engines and the fuel system following the accident. Examination revealed that both engines had experienced fuel exhaustion. The sequence of events indicated that the initial loss of power in the right engine was directly attributable to the depletion of usable fuel, which subsequently led to the failure of the left engine as the aircraft attempted to divert.

Findings

The primary factor contributing to the accident was the fuel exhaustion that affected both engines. The pilot's decision to continue the flight after refueling did not prevent the eventual depletion of fuel reserves before reaching the intended destination or the alternate airfield. The impact with the terrain occurred as a direct result of the loss of thrust in both powerplants.

Safety message

Pilots must ensure that sufficient fuel reserves are calculated for the entire flight plan, including potential diversions and holding patterns. Regular monitoring of fuel quantity and consumption rates is essential to prevent fuel exhaustion, particularly during long flights or when operating near the limits of the aircraft's range.

Probable cause

The pilot's failure to ensure adequate fuel supply for the flight, which resulted in fuel exhaustion and total loss of engine power.

Frequently asked questions

What happened in the 6 Jul 1989 Piper PA-30B-160 accident near Merced, CA?

A pilot experienced total engine failure approximately 50 nautical miles from his destination airport while attempting to divert to a nearby airfield, resulting in a terrain impact short of the runway.

What aircraft was involved and where did it happen?

The accident on 6 Jul 1989 involved a Piper PA-30B-160, registration N8212Y, operated by Larry A. Lamb, at Merced, CA.

What was the probable cause of the accident?

The pilot's failure to ensure adequate fuel supply for the flight, which resulted in fuel exhaustion and total loss of engine power.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X28861. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.