On August 10, 1986, a Piper PA-28-140 (registration N56189) was involved in an aviation accident near Rancho Mirage, CA. Investigators recorded the probable cause as: The ingestion of a piece of fabric into the carburetor venturi, which had become dislodged from the forward end of the carburetor heat shroud where it was used as a shim. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aircraft engine lost power thirty minutes after takeoff, forcing a landing. Investigation revealed a piece of fabric from the heat shroud obstructed the carburetor venturi.
What happened
The aircraft's engine experienced a loss of power approximately thirty minutes after takeoff. The pilot attempted a forced landing as a result of the mechanical failure.
The investigation
Following the incident, investigators examined the engine and found that it could be started and run, though it operated roughly and developed only partial power. Upon disassembling the carburetor, a piece of fabric measuring 1 and 1/4 inches by 3 inches was discovered lodged in the venturi section. The material resembled asbestos in both appearance and texture.
Findings
Further investigation determined that the fabric had become dislodged from the forward end of the carburetor heat shroud, where it had been used as a shim. Fuel contamination caused by this obstruction led to the engine failure.
Probable cause
The ingestion of a piece of fabric into the carburetor venturi, which had become dislodged from the forward end of the carburetor heat shroud where it was used as a shim.
Frequently asked questions
What happened in the 10 Aug 1986 Piper PA-28-140 accident near Rancho Mirage, CA?
An aircraft engine lost power thirty minutes after takeoff, forcing a landing. Investigation revealed a piece of fabric from the heat shroud obstructed the carburetor venturi.
What aircraft was involved and where did it happen?
The accident on 10 Aug 1986 involved a Piper PA-28-140, registration N56189, at Rancho Mirage, CA.
What was the probable cause of the accident?
The ingestion of a piece of fabric into the carburetor venturi, which had become dislodged from the forward end of the carburetor heat shroud where it was used as a shim.
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