NTSB Identification: SEA82DA025
14 CFR Part 91: General Aviation
Accident occurred Wednesday, February 03, 1982 in NR. COLBERT, WA
Probable Cause Approval Date: 02/03/1983
Aircraft: CESSNA 150J, registration: N5527G
Injuries: 2 Uninjured.

DURING FLIGHT, THE INSTRUCTOR ASKED THE STUDENT TO PERFROM A POWER-OFF APPROACH-TO-LANDING STALL. THE STUDENT BEGAN THE MANEUVER AT ABOUT 4600 FT WITH THE CARBURETOR HEAT ON. DURING RECOVERY, HE ABRUPTLY ADVANCED THE THROTTLE AND THE ENGINE BEGAN TO LOSE POWER. THE INSTRUCTOR TOOK CONTROL OF THE AIRCRAFT, AND SHORTLY THEREAFTER, THE ENGINE CEASED OPERATING. THE INSTRUCTOR ATTEMPTED TO RESTART THE ENGINE, BUT SAID THAT HE WAS UNABLE, DUE TO LACK OF BATTERY POWER. DURING A SUBSEQUENT FORCED LANDING, THE AIRCRAFT TOUCHED DOWN ON TERRAIN COVERED WITH DEEP SNOW AND NOSED OVER. DURING AN INVESTIGATION, THE CARBURETOR AND ASSOCIATED COMPONENTS WERE INSPECTED FOR ICE OR OTHER FOREIGN MATERIAL; HOWEVER, NONE WAS FOUND. THE ENGINE WAS REMOVED FROM THE AIRCRAFT AND PLACED ON A TEST STAND. IT OPERATED NORMALLY DURING A GROUND RUN. PREVIOUSLY, ONE CELL OF THE BATTERY WOULD NOT HOLD A CHARGE. THIS REQUIRED "HAND PROPPING" OF THE ENGINE ON THE FIRST FLIGHT OF THE DAY. ALSO, THE BATTERY WAS SLOW TO RECHARGE.

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

REASON FOR OCCURRENCE UNDETERMINED


Contributing Factors

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..INITIATED..PILOT IN COMMAND(CFI)


Contributing Factors

ELECTRICAL SYSTEM,BATTERY..FAILURE,PARTIAL


Contributing Factors

MAINTENANCE..NOT OBTAINED..COMPANY/OPERATOR MANAGEMENT


Contributing Factors

TERRAIN CONDITION..SNOW COVERED

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