On July 24, 1993, a Cessna 177 (registration N30170) was involved in an aviation accident near Troutdale, OR. Investigators recorded the probable cause as: Fuel exhaustion due to higher-than-estimated fuel consumption from an unplanned stop and headwind, and the pilot's reliance on previous experience rather than fuel gauge indications. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot experienced fuel exhaustion following an unplanned stop and second takeoff, combined with a constant 20-knot headwind, causing higher fuel consumption than estimated. The pilot relied on prior experience despite empty fuel gauge readings.
Flight Sequence
The pilot originally intended to make a nonstop trip but found it necessary to make an unplanned stop after reaching cruise altitude. This required a second unplanned takeoff and climb to return to cruise altitude.
Fuel Consumption
The unplanned stop and climb, along with a constant headwind of approximately 20 knots, resulted in the aircraft consuming more fuel than the pilot had estimated would be burned en route.
Pilot's Estimation
The pilot based his fuel burn figures primarily on his experience during previous trips in this aircraft. As a result, he thought he had fuel remaining, even though the gauges read empty prior to the loss of power.
Probable cause
Fuel exhaustion due to higher-than-estimated fuel consumption from an unplanned stop and headwind, and the pilot's reliance on previous experience rather than fuel gauge indications.
What happened in the 24 Jul 1993 Cessna 177 accident near Troutdale, OR?
A pilot experienced fuel exhaustion following an unplanned stop and second takeoff, combined with a constant 20-knot headwind, causing higher fuel consumption than estimated. The pilot relied on prior experience despite empty fuel gauge readings.
What aircraft was involved and where did it happen?
The accident on 24 Jul 1993 involved a Cessna 177, registration N30170, at Troutdale, OR.
What was the probable cause of the accident?
Fuel exhaustion due to higher-than-estimated fuel consumption from an unplanned stop and headwind, and the pilot's reliance on previous experience rather than fuel gauge indications.
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