On February 17, 1984, a Piper PA-28R-201T (registration N1642H) was involved in an aviation accident near St. Augustine, FL. Investigators recorded the probable cause as: The failure of the engine fuel pump due to a hardened and shattered O-ring seal. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot reported partial engine power loss shortly after becoming airborne and attempted to return to the field but missed the runway.
What happened
The pilot reported that the engine lost partial power shortly after the aircraft became airborne. He attempted to return to the field and land on runway 24, but he missed the runway and landed hard north of the runway.
The investigation
Disassembly of the engine fuel pump revealed that the O-ring sealing the aneroid housing to the variable orifice body had hardened and shattered.
Probable cause
The failure of the engine fuel pump due to a hardened and shattered O-ring seal.
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