NTSB Identification: FTW90DPJ11.
The docket is stored on NTSB microfiche number 43609.
Accident occurred Saturday, September 15, 1990 in CASHION, OK
Probable Cause Approval Date: 11/23/1992
Aircraft: DOOLEY MUSTANG MII, registration: N7015A
Injuries: 1 Uninjured.

AT 5,500 FEET ONE BLADE OF THE TWO BLADE PROPELLER FAILED, RESULTING IN SEPARATION OF A 14 INCH SECTION OF THE BLADE. THE PILOT THEN SECURED THE ENGINE AND PERFORMED A FORCED LANDING IN A RIVER BED. TOUCHDOWN WAS TAIL FIRST AND WHEN THE MAIN GEAR CONTACTED THE SAND THE AIRPLANE NOSED OVER. THE PROPELLER LOG BOOK COULD NOT BE LOCATED, HOWEVER, THE PILOT ESTIMATED PROPELLER TOTAL TIME TO BE ABOUT 405 HOURS. EXAMINATION REVEALED AT LEAST THREE CRACK ZONES ON THE FRACTURE SURFACE FROM PREVIOUS UNDOCUMENTED DAMAGE.

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

THE SEPARATION OF A 14 INCH SECTION OF ONE PROPELLER BLADE DUE TO PREVIOUS DAMAGE.

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