NTSB Identification: SEA87LA056.
The docket is stored on NTSB microfiche number 32816.
Accident occurred Thursday, February 12, 1987 in MOUNTAIN HOME, ID
Probable Cause Approval Date: 03/21/1988
Aircraft: CESSNA 150, registration: N50724
Injuries: 2 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.

ACFT LOST PWR ON INIT CLIMB FROM TAKEOFF, NECESSITATING A FORCED LANDING IN AN OPEN FIELD. ACFT NOSED OVER INVERTED AFTER TOUCHDOWN IN SOFT TERRAIN. INVESTIGATION REVEALED #3 CYLINDER ROCKER ARM BOSSES HAD BROKEN. INSPECTION SHOWED, DURING PREVIOUS REPAIR, ATTEMPT TO STAKE BUSHINGS WITH CENTER PUNCH TOOL. FRACTURES ORIGINATED AT THESE TOOL MARKS.

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

ENGINE ASSEMBLY,CYLINDER..BRITTLE FRACTURE

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

TERRAIN CONDITION..SOFT

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

MAINTENANCE,MAJOR REPAIR..IMPROPER..OTHER MAINTENANCE PERSONNEL

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