Casualties unknown

1994-08-28: Beech D95A (N4835J) — Diamond K. Aviation, Inc. — Oakdale, CA

Oakdale, CA, US

On August 28, 1994, a Beech D95A (registration N4835J) operated by Diamond K. Aviation, Inc. was involved in an aviation accident near Oakdale, CA. Investigators recorded the probable cause as: IMPROPER IN-FLIGHT PLANNING/DECISION BY THE FLIGHT INSTRUCTOR (CFI), AND THE CFI'S INADEQUATE SUPERVISION BY NOT ASSURING THAT THE MINIMUM CONTROL SPEED (VMC) WAS MAINTAINED. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

During a multiengine training flight, a student pilot and CFI crashed after a low pass. Witness heard gear warning horn; wreckage showed left fuel selector off and left propeller feathered.

Introduction

A multiengine flight training accident occurred when the aircraft, on its student's first multiengine flight, crashed into a field adjacent to the airport after a low pass. The flight had conducted three takeoffs and landings before departing the area and returning a few minutes later.

Sequence of Events

As the flight returned, the CFI transmitted their position over the radio. A ground-based witness, also a multiengine CFI, heard a gear warning horn sounding in the background of the transmission. The witness believed the flight was practicing a single-engine approach. The witness observed the aircraft descending to approximately 30 feet above ground level while overflying the approach end of the runway, then entering a shallow climb. Before reaching the departure end of the runway, the aircraft entered a left bank. The bank angle gradually increased until the aircraft became vertical, at which point it crashed into a field next to the airport.

Wreckage Examination

Examination of the wreckage revealed no preimpact mechanical malfunction. The left fuel tank selector was found in the 'OFF' position, while the right fuel tank selector was in the 'MAIN TANK' position. The left propeller appeared to have been in the feather position; the right propeller was twisted and bent.

Instructor Experience

The CFI had been issued a multiengine instructor pilot certificate 2.5 weeks before the accident. During that time, the CFI had provided approximately 8 hours of total multiengine instruction to another student.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X02093. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.