Pilot Debrief

Jones Cozy Mark IV near Sioux City, IA — 2011-05-30

Final reportCEN11LA367
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Date
2011-05-30
Location
Sioux City, IA, USA
Airport
SUX
Aircraft
Jones Cozy Mark IV
Registration
N204TJ
Category
Airplane
Highest injury
Minor
Fatalities
0
Phase of flight
Maneuvering

Probable cause

The pilot's improper installation of the gascolator gasket during the airplane's last condition inspection, which resulted in a partial loss of engine power while maneuvering.

NTSB narrative

The airplane sustained a partial loss of engine power while maneuvering at 7,500 feet mean sea level about 10 miles from the departure airport. The pilot then elected to return to the departure airport for a precautionary landing. While en route, he smelled fuel and shut the fuel selector off. He executed a landing to a field after he realized that the glidepath would not reach the runway. The pilot stated that he did not install the gascolator gasket properly during his last condition inspection of the airplane, which resulted in air entering the fuel system and a subsequent partial loss of engine power.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot did not properly install the gascolator gasket during the last inspection.

NTSB coding

Evidence available

  • 1 docket document
View NTSB final reportView NTSB docket

Docket documents1

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