On May 7, 1984, a Cessna 188B (registration N21672) operated by Robert W.jonte,jr. was involved in an aviation accident near Paxville, SC. Investigators recorded the probable cause as: The engine's failure to respond to the pilot's attempt to add power due to a blocked airflow caused by a separated butterfly valve door resulting from worn carburetor heat control door brackets. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aircraft nosed over short of the runway after the engine failed to respond to power requests. Investigation revealed worn brackets allowed the butterfly valve to block airflow.
The aircraft nosed over short of the runway following an engine failure that did not respond to the pilot's attempt to add power in order to reach the runway.
Post-accident examination revealed that the carburetor heat control door brackets were worn. This wear allowed the butterfly valve door to separate and become free, which subsequently blocked airflow in the intake and carburetor duct.
The engine's failure to respond to the pilot's attempt to add power due to a blocked airflow caused by a separated butterfly valve door resulting from worn carburetor heat control door brackets.
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