NTSB Identification: ANC89LA026.
The docket is stored on NTSB microfiche number 37386.
Nonscheduled 14 CFR
Accident occurred Wednesday, December 21, 1988 in PORCUPINE LODGE, AK
Probable Cause Approval Date: 12/06/1989
Aircraft: CESSNA 185, registration: N70087
Injuries: 3 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 AIRCRAFT WAS TAXIING FOR TAKEOFF ON THE FROZEN PORCUPINE RIVER IN RURAL ALASKA WHEN THE RIGHT MAIN LANDING GEAR BROKE THROUGH THE RIVER ICE, ALLOWING THE RIGHT WING TO STRIKE THE ICE. THE PILOT STATED THAT HE HAD LANDED ON THE RIVER NEAR THE PORCUPINE LODGE AT A SITE THAT HAD BEEN DESIGNATED BY THE OPERATOR OF THE LODGE AS A LANDING SITE. HE EXPERIENCED NO PROBLEMS DURING THE LANDING, AND ASSUMED THAT THE ICE WAS THICK ENOUGH TO SUPPORT THE WEIGHT OF HIS AIRPLANE. DURING THE TAXI DOWNSTREAM FOR TAKEOFF, THE RIGHT MAIN LANDING GEAR TIRE AND SKI BROKE THROUGH THE ICE INTO APPROXIMATELY FOUR FEET OF WATER.

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

UNSUITABLE TERRAIN OR TAKEOFF/LANDING/TAXI AREA..SELECTED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..WEAK ICE


Contributing Factors

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND

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