NTSB Identification: ANC83LA099.
The docket is stored on NTSB microfiche number 20480.
Accident occurred Friday, June 17, 1983 in (N) SKWENTNA, AK
Aircraft: CESSNA 185, registration: N3991Q
Injuries: 4 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 ACFT WAS GROUND LOOPED INTENTIONALLY TO PREVENT A COLLISION WITH PEOPLE OR BOATS. THE PILOT SAID HE HAD NO BRAKING ACTION DURING LANDING. HE BELIEVES SOMEONE LOOSENED THE PLUGS IN THE BOTTOM OF BOTH BRAKE CYLINDERS AND THESE PLUGS DROPPED OUT IN FLIGHT. HE SAID BOTH PLUGS WERE IN PLACE DURING PREFLIGHT AND BRAKING WAS GOOD WHILE TAXING FOR TAKEOFF. THE TAPPED THREADS FOR THOSE PLUGS WERE CLEAN AND SHINY DURING POST-ACCIDENT EXAMINATION.

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

GROUND LOOP/SWERVE..INTENTIONAL..PILOT IN COMMAND

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

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND


Contributing Factors

LANDING GEAR,NORMAL BRAKE SYSTEM..DISCONNECTED


Contributing Factors

LANDING GEAR,NORMAL BRAKE SYSTEM..INOPERATIVE

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