5 fatalities

2000-09-18: Piper PA-31 Cheyenne (N220CS) — Cape Smythe Air Service — Nuiqsut, United States of America

Nuiqsut, United States of AmericaLanding (descent or approach)

On September 18, 2000, a Piper PA-31 Cheyenne (registration N220CS) operated by Cape Smythe Air Service was involved in an aviation accident near Nuiqsut, United States of America during landing or approach. 5 people were killed. Investigators recorded the probable cause as: The pilot's failure to extend the landing gear, his improper aborted landing procedure, and inadvertent stall/mush. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781203232Data APIEditorial standards

A twin-engine turboprop on a scheduled commuter flight touched down with landing gear retracted, then executed an improper balked landing procedure, stalled, and collided with terrain. Five passengers survived.

Accident Sequence

The airline transport certificated pilot was landing at a remote village on a scheduled domestic commuter flight with nine passengers. The accident airplane, a twin-engine turboprop certified for single-pilot operations, was equipped with a fuselage-mounted belly cargo pod. Witnesses observed the airplane touch down on the gravel runway with the landing gear retracted. The belly pod lightly scraped the runway for about 40 feet before the airplane transitioned to a climb. The propeller tips did not contact the runway. As the airplane began climbing away from the runway, the landing gear was extended. The airplane climbed to about 100 to 150 feet above the ground, and then began a descending left turn, colliding with tundra-covered terrain. A postcrash fire destroyed the fuselage, right wing, and the right engine. The flaps were found extended to 40 degrees. The balked landing procedure for the airplane states, in part: "power levers to maximum, flaps to 15 degrees, landing gear up, and then retract the flaps."

Survivor Accounts

Five passengers seated in the rear of the airplane survived the crash. The survivors did not recall hearing a gear warning horn before ground contact.

Previous Incidents

The airplane was landed gear-up eight months before the accident. The airplane was nearly landed gear-up four months before the accident. Each time, a landing gear warning horn was not heard by the pilot or passengers.

Examination

A postcrash examination of the airplane and engines did not locate any preimpact mechanical malfunction.

Regulatory Actions

The FAA's Fairbanks, Alaska, Flight Standards District Office (FSDO) conducted an inspection of the operator six months before the accident, and recommended the operator utilize two pilots in the accident airplane. Following the accident, the Fairbanks FSDO required the operator to utilize two pilots for passenger flights in the accident airplane make and model.

Probable cause

The pilot's failure to extend the landing gear, his improper aborted landing procedure, and inadvertent stall/mush. Factors in the accident were an improper adjustment of the landing gear warning horn system by company maintenance personnel, and the failure of the pilot to utilize the pre-landing checklist.