1995-08-06: Piper PA-18-160 — Port Alsworth, AK

Casualties unknown • Port Alsworth, AK, US

Probable cause

AN IN-FLIGHT SEPARATION OF A PROPELLER BLADE, WHICH RESULTED IN A SEVERE VIBRATION, SHUTDOWN OF THE ENGINE, AND A FORCED LANDING IN ALDER BUSHES.

— NTSB Determination

Accident narrative

DURING CRUISE FLIGHT, APPROXIMATELY 9.5 INCHES OF A PROPELLER BLADE SEPARATED FROM THE AIRPLANE'S PROPELLER, AND THE AIRPLANE BEGAN A SEVERE VIBRATION. THE PILOT CLOSED THE THROTTLE AND PULLED THE MIXTURE TO THE IDLE CUT OFF POSITION. HE THEN LANDED IN ALDER BUSHES, AND THE AIRPLANE NOSED OVER. RECORDS SHOWED THAT THE PROPELLER HAD SUSTAINED A PREVIOUS PROPELLER STRIKE AND THAT IT HAD BEEN STRAIGHTENED AND CUT TO 80 INCHES.

Frequently asked questions

What happened in the 1995-08-06 Piper PA-18-160 accident near Port Alsworth, AK?

DURING CRUISE FLIGHT, APPROXIMATELY 9.5 INCHES OF A PROPELLER BLADE SEPARATED FROM THE AIRPLANE'S PROPELLER, AND THE AIRPLANE BEGAN A SEVERE VIBRATION. THE PILOT CLOSED THE THROTTLE AND PULLED THE MIXTURE TO THE IDLE CUT OFF POSITION. HE THEN LANDED IN ALDER BUSHES, AND THE AIRPLANE NOSED OVER. RECORDS SHOWED THAT…

What aircraft was involved and where did it happen?

The accident on 1995-08-06 involved a Piper PA-18-160, registration N814JM, at Port Alsworth, AK.

What was the probable cause of the accident?

AN IN-FLIGHT SEPARATION OF A PROPELLER BLADE, WHICH RESULTED IN A SEVERE VIBRATION, SHUTDOWN OF THE ENGINE, AND A FORCED LANDING IN ALDER BUSHES.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001207X04126. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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