NTSB Identification: FTW90LA148.
The docket is stored on NTSB microfiche number 41619.
Accident occurred Saturday, July 28, 1990 in CARLISLE, AR
Probable Cause Approval Date: 10/02/1992
Aircraft: WSK PZL Mielec PZL-M-18, registration: N4609P
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE AG PILOT, WITH AN EMPTY AIRPLANE, ON TAKEOFF ON A SHORT STRIP, SAW THE TACHOMETER OVERSPEED. HE ABORTED THE TAKEOFF BUT WAS UNABLE TO STOP ON THE ROUGH/UNEVEN SURFACE. HE SAID THAT WHEN THE END OF THE RUNWAY GOT CLOSER, THE SURFACE GOT BETTER, AND HE APPLIED FULL BRAKING ACTION, AND THE AIRPLANE FLIPPED FORWARD TO THE INVERTED POSITION. THE OWNER PUT THE TACHOMETER IN ANOTHER AIRPLANE AND IT OPERATED NORMALLY. OPERATOR OF ENGINE OVERHAUL SHOP CONTACTED MANUFACTURER FOR SPECIAL INSTRUCTIONS FOR INSPECTING FOR ENGINE OVERSPEED. MANUFACTURER REPLIED THAT ENGINE OVERSPEED NOT POSSIBLE WITH THIS ENGINE/PROPELLER COMBINATION DUE TO INTERNAL CONSTRUCTION OF PROPELLER.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PILOT'S INITIATION OF THE ABORT WITH EXCESS AIRSPEED. A CONTRIBUTING FACTOR WAS THE ENGINE TACHOMETER OVERSPEED.

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