Engine Power Loss Leads to Crash of Modified Aircraft in Arizona
On May 9, 2024, a modified Robert Sterling 4P aircraft lost engine power shortly after takeoff, leading to a crash. The incident highlights risks associated with modifications and fuel system installations in amateur-built aircraft.
Theia Market Signal Identification - AI AssistedThe Robert Sterling 4P, a modified experimental aircraft, crashed after losing engine power during climb on May 9, 2024. The pilot had completed a condition inspection, including oil and fuel changes, with normal performance noted during run-ups.
At approximately 500 feet, he attempted to return to the airport but could not maintain engine power. The aircraft, which had extensive modifications including a Lycoming O-540 engine and amphibious floats, sustained substantial damage but the pilot survived with minor injuries.
Investigations revealed no catastrophic engine failure, and all fuel tanks contained usable fuel. A significant issue was the incorrect installation of a fuel strainer and a household-grade valve for the fuel system. The probable cause was identified as fuel vapor lock during initial climb.
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