No fatalities

1997-08-17: Cessna 425 Conquest (N1224S) — Inductotherm Group — Perkasie-Pennridge, United States of America

Perkasie-Pennridge, United States of AmericaFlight

On August 17, 1997, a Cessna 425 Conquest (registration N1224S) operated by Inductotherm Group was involved in an aviation accident near Perkasie-Pennridge, United States of America in flight. No fatalities were reported. Investigators recorded the probable cause as: The pilot's inadequate preflight, by failing to verify the fuel supply, which led to subsequent fuel exhaustion and loss of engine power. A related factor was: the inaccurate fuel quantity gauge. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781205879Data APIEditorial standards

A pilot's decision to trust an inaccurate fuel gauge led to fuel exhaustion and dual engine failure, resulting in a forced landing that damaged the aircraft.

Preflight and Flight

During preflight, the pilot identified a discrepancy between the requested fuel load and the fuel gauge readings. Concluding that the right fuel quantity gauge was accurate and the left gauge was inaccurate, the pilot proceeded with a multiple-leg flight. At an away airport, based solely on the right fuel gauge indication, the pilot chose not to refuel before starting the return leg.

Engine Failure and Forced Landing

Approximately 50 miles from the destination, both low fuel quantity lights illuminated, and the right fuel gauge showed 390 pounds of fuel remaining. The pilot continued toward the destination. Minutes later, both engines lost power, necessitating a forced landing in an open school field. During the landing rollout, the left wing struck a football training device, resulting in the separation of the outboard 4 feet of the wing.

Post-Accident Investigation

Post-accident examination revealed that both fuel tanks, collector tanks, fuel lines, and filters were empty. When electrical power was applied, the left fuel gauge indicated '0' and the right fuel gauge indicated 290 pounds of fuel. The pilot reported that he should have monitored fuel supply more closely and landed at the first sign of inconsistencies in fuel quantity readings.

Probable cause

The pilot's inadequate preflight, by failing to verify the fuel supply, which led to subsequent fuel exhaustion and loss of engine power. A related factor was: the inaccurate fuel quantity gauge.