Piper PA28 N8447R accident near Tampa, Florida

Probable cause

A collapsed engine induction duct, which resulted in restricted air flow to the engine and a subsequent loss of engine power. Contributing to the accident was the operator's failure to ensure that the correct induction duct was installed.

NTSB analysis

The private pilot stated that he rented the airplane 2 days before the accident flight to fly across the state for several days. On the day of the accident, the pilot performed a preflight inspection of the airplane with no anomalies noted. After takeoff and during the initial climb, the pilot noticed a loss of engine power, and the rpm started to drop. He attempted to return to the departure airport and land on an intersecting runway, but during the turn, he realized he would not make it back to the airport; he ditched the airplane into the surrounding water. The airplane was substantially damaged during the ditching.

Postaccident examination of the airplane revealed that the induction duct from the air filter to the carburetor had collapsed, which likely restricted air flow to the engine and ultimately resulted in the loss of engine power. Further examination revealed that the induction duct on the accident airplane was not approved for installation on the engine. About 3 years before the accident, the Federal Aviation Administration had issued a special airworthiness information bulletin recommending operators inspect airplanes of this model to ensure that the correct induction duct was installed; that there was no loose or displaced supporting wire or signs of wear, perforation, or deterioration; and that the part had not collapsed. However, the operator was unaware of the bulletin and had not performed the inspection. After the accident, the operator inspected the fleet and installed the approved part on all affected airplanes.

Text from the NTSB. Open the NTSB docket for ERA17LA128 for the full record.