Casualties unknown

1999-10-21: Cessna 172N (N738FY) — Westwind Aviation Inc — Deer Valley, AZ

Deer Valley, AZ, US

On October 21, 1999, a Cessna 172N (registration N738FY) operated by Westwind Aviation Inc was involved in an aviation accident near Deer Valley, AZ. Investigators recorded the probable cause as: Fuel exhaustion due to the pilot's inadequate preflight verification of the fuel quantity, and, once he became aware of the critical fuel state, his decision to over-fly two alternate airports in order to continue to his destination. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

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

A pilot experienced engine power loss during a flight after 4.4 hours since last fueling. The pilot made a forced landing, during which the airplane struck a tree. Fuel management issues were noted.

Flight and Fueling History

The airplane had flown 4.4 hours since its last refueling. Fueling records indicated the airplane was refueled the day before the accident flight. Another renter pilot subsequently flew the airplane for 1.3 hours without refueling.

Preflight Inspection and Departure

The accident pilot conducted a preflight inspection and checked the left wing tank for fuel by inserting a finger into the filler opening. The right fuel tank was not checked. The pilot noted the left fuel gauge indicated full and the right fuel gauge indicated three-quarters of a tank at departure.

Flight Operations

The pilot flew north to Flagstaff, then returned to the local Phoenix area. While waiting for sunset, the pilot practiced a touch-and-go landing at a nearby airport. During the flight, the pilot observed that the fuel gauge needles were not moving, which he considered a possible indicator of a low fuel state. However, the pilot believed the gauges were inaccurate and elected to continue the flight back to the originating airport, bypassing two airports along the route.

Engine Power Loss and Forced Landing

While northeast of the second possible alternate airport, the engine sputtered for the first time. The pilot decided to continue toward the destination airport, which was 12 miles farther, rather than perform a precautionary landing. Subsequently, the engine lost all power. The pilot executed a forced landing in a clear area. During the landing roll, the airplane collided with a small tree.

Time and Fuel Usage

The Hobbs meter readings indicated the pilot flew the airplane for 3.1 hours on the accident flight. Total time since the last refueling was 4.4 hours.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19994. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.