Summary
On April 27, 2007, a Piper PA-18 (N40520) was involved in an incident near Prineville, OR. All 2 people aboard were uninjured. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this incident to be: The total loss of engine power due to fuel exhaustion as a result of the pilot failing to correctly read the fuel quantity sight gauges. Factors include soft, brushy terrain, and the pilot's intentional excessive braking during the forced landing.
During the preflight inspection, the pilot looked at the fuel level sight gauges and did not see a meniscus point in the clear tubes. He therefore assumed that this meant the tanks were completely full and that the entire sight gauge was filled with fuel. About five minutes after departure the aircraft ran out of fuel, and during the ensuing forced landing the aircraft nosed over on the soft, brushy terrain as the pilot applied "excessive braking" in order to stop before reaching a line of trees. After the accident, the pilot checked his fueling log, and then realized that the fuel tanks had been almost completely empty prior to takeoff, and that the reason he saw no meniscus point in the fuel quantity sight gauges was because the lines were completely full of air.
This incident is documented in NTSB report SEA07CA113. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N40520.
Accident Details
Probable Cause and Findings
The total loss of engine power due to fuel exhaustion as a result of the pilot failing to correctly read the fuel quantity sight gauges. Factors include soft, brushy terrain, and the pilot's intentional excessive braking during the forced landing.
Aircraft Information
Registered Owner (Current)
Analysis
During the preflight inspection, the pilot looked at the fuel level sight gauges and did not see a meniscus point in the clear tubes. He therefore assumed that this meant the tanks were completely full and that the entire sight gauge was filled with fuel. About five minutes after departure the aircraft ran out of fuel, and during the ensuing forced landing the aircraft nosed over on the soft, brushy terrain as the pilot applied "excessive braking" in order to stop before reaching a line of trees. After the accident, the pilot checked his fueling log, and then realized that the fuel tanks had been almost completely empty prior to takeoff, and that the reason he saw no meniscus point in the fuel quantity sight gauges was because the lines were completely full of air. The pilot had not visually checked the fuel tanks during his preflight.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# SEA07CA113