Aviation Accident Summaries

Aviation Accident Summary LAX89FA295

MAR VISTA, CA, USA

Aircraft #1

N51MR

NORTH AMERICAN P51D

Analysis

THE ENGINE'S NUMBER 5 INTAKE VALVE SEAT BACKED OUT OF THE HEAD IMMEDIATELY AFTER TAKEOFF, RESULTING IN THE LOSS OF POWER OF 3 CYLINDERS. THE PILOT ENTERED A TURN TO RETURN TO THE RUNWAY. THE AIRCRAFT STALLED AND COLLIDED WITH A RESIDENCE. THE AIRCRAFT FLIGHT MANUAL RECOMMENDED A STRAIGHT AHEAD FLIGHT PATH IN THE EVENT OF A POWER LOSS. THE REMAINING 9 CYLINDERS WERE PRODUCING SUFFICIENT POWER TO ENABLE THE AIRCRAFT TO SLOWLY CLIMB ON A STRAIGHT AHEAD FLIGHT PATH.

Probable Cause and Findings

THE PILOT'S POOR IN-FLIGHT PLANNING IN ATTEMPTING TO IMMEDIATELY RETURN TO THE AIRPORT AND NOT FOLLOWING ESTABLISHED PROCEDURES AFTER THE LOSS OF POWER AFTER TAKEOFF. THE FAILURE OF AN INTAKE VALVE WAS A FACTOR IN THE ACCIDENT.

 

Source: NTSB Aviation Accident Database

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