NTSB Identification: LAX99LA269.
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Accident occurred Friday, August 13, 1999 in BUCKEYE, AZ
Probable Cause Approval Date: 08/14/2001
Aircraft: Cessna 152, registration: N49100
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

While inbound to his destination, the pilot reported that the engine began to miss. It resumed running a couple of times but finally stopped altogether. The pilot made a forced landing on a dirt road, damaging the aircraft. The aircraft was last serviced with 20.8 gallons of aviation fuel on the previous day. The pilot computed the fuel requirement for the flight by using the fuel consumption chart in the pilot operator's handbook. After a flight of 0.2 hours on the day before, the pilot estimated that he had 3 hours 55 minutes of fuel remaining (without reserve) for his cross-country flight. At the time the engine quit, the Hobbs meter showed that a total of 3 hours 36 minutes had elapsed. The average fuel consumption for the fuel load was 6.8 gallons per hour. The fuel capacity of the aircraft is 26 gallons with 1.5 gallons unusable. When asked about his planning, he acknowledged that his planning estimate of 6 gallons per hour had not considered the additional fuel requirements for his initial takeoff and climb, nor the seven other landings and takeoffs that he subsequently made since his last refueling. According to the POH performance charts, start, taxi, and takeoff requires 0.8-gallons of fuel. Aircraft retrieval personnel recovered less than 2 gallons of fuel from both of the main tanks and the fuel system was found to be intact. Safety Board investigators successfully started and ran the engine after the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

fuel exhaustion due to the pilot's inaccurate fuel consumption calculations used in flight planning.

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