On April 5, 1984, a Piper PA-28-150 (registration N5839W) was involved in an aviation accident near Apex, NC. Investigators recorded the probable cause as: The failure of a ResistoFlex hose (part number 17766-6), which allowed unmetered air to enter the engine cylinders through the primer lines, resulting in loss of engine power during takeoff. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An aircraft experienced engine power loss during takeoff due to a failed ResistoFlex hose allowing unmetered air into the cylinders, resulting in a forced landing on an abandoned railroad bed.
What happened
The pilot reported that the engine lost power while the aircraft was in the takeoff phase. Although he managed to keep the engine running by manually pumping the throttle, the aircraft was unable to gain altitude. Consequently, he executed a forced landing on an abandoned railroad bed.
The investigation
A subsequent examination of the aircraft revealed that a ResistoFlex hose with part number 17766-6 had failed. This failure allowed unmetered air to enter the engine cylinders through the primer lines.
Findings
The primary factor contributing to the incident was the mechanical failure of the fuel system component, which disrupted the proper fuel-air mixture required for sustained power during takeoff.
Probable cause
The failure of a ResistoFlex hose (part number 17766-6), which allowed unmetered air to enter the engine cylinders through the primer lines, resulting in loss of engine power during takeoff.
What happened in the 5 Apr 1984 Piper PA-28-150 accident near Apex, NC?
An aircraft experienced engine power loss during takeoff due to a failed ResistoFlex hose allowing unmetered air into the cylinders, resulting in a forced landing on an abandoned railroad bed.
What aircraft was involved and where did it happen?
The accident on 5 Apr 1984 involved a Piper PA-28-150, registration N5839W, at Apex, NC.
What was the probable cause of the accident?
The failure of a ResistoFlex hose (part number 17766-6), which allowed unmetered air to enter the engine cylinders through the primer lines, resulting in loss of engine power during takeoff.
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