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Casualties unknown

1992-12-27: Beech 90 (N56KA) — Planemaster Services, Inc. — Dixon, IL

Dixon, IL, US

On December 27, 1992, a Beech 90 (registration N56KA) operated by Planemaster Services, Inc. was involved in an aviation accident near Dixon, IL. Investigators recorded the probable cause as: THE INSTRUCTOR PILOT NOT MAINTAINING DIRECTIONAL CONTROL FOLLOWING ENGINE SHUT DOWN AND NOT PERFORMING REMEDIAL ACTION OF A POWER REDUCTION TO REGAIN DIRECTIONAL CONTROL, AS PRESCRIBED BY HIS COMPANY'S TRAINING MANUAL, ONCE THE AIRPLANE BEGAN TO YAW/TURN TO… This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 9 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards
Aircraft registered N56KA
Aircraft registered N56KA. Photo: Aeroprints.com / CC BY-SA 3.0, via Wikimedia Commons

During a training flight, the trainee was on final approach at 95 KIAS when the instructor called for a go-around. After full power application, the instructor observed a left yaw, took control, feathered the left propeller, but the aircraft continued turning left and collided with the ground about 120 degrees left of the runway heading. Subsequent teardown found no engine failure.

Approach and Go-Around

The trainee pilot was flying a final approach at an indicated airspeed of 95 knots with the engine power set to approximately 400 pounds of torque. The instructor pilot directed the trainee to execute a go-around. In response, the trainee applied full power.

Loss of Control

Shortly after the application of full power, the instructor pilot observed a left yaw developing. The instructor then took control of the airplane and feathered the left propeller. Despite this action, the aircraft continued its left yaw and turn until it collided with the ground. The ground impact occurred at a heading approximately 120 degrees to the left of the runway heading.

Engine Examination

A teardown inspection of the left engine and its controls was conducted. The examination revealed no anomalies that would have caused a powerplant failure.

Reference Speeds

The aircraft operating manual specifies that the final approach speed should be 96 knots indicated airspeed. The minimum control speed (Vmc) for the airplane is 86 knots indicated airspeed.

Related events

Same aircraft family

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Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X16144. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.