NTSB Identification: FTW85LA027.
The docket is stored on NTSB microfiche number 28352.
Accident occurred Sunday, October 28, 1984 in LIPAN, TX
Aircraft: CESSNA 152, registration: N49475
Injuries: 2 Minor.

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 EXPERIENCED A PARTIAL ENG FAILURE IN FLIGHT. DURING THE FORCED LANDING, THE NOSE GEAR DUG INTO TERRAIN AND THE ACFT FLIPPED OVER. INVESTIGATION REVEALED THAT THE NO. 3 CYL BARREL WAS CRACKED ABOUT 90% AROUND THE CIRCUMFERENCE. METALLURGICAL EXAMINATION REVEALED THAT CRACK HAD INITIATED IN FATIGUE DUE TO IMPROPER MACHINING OF THE BARREL TO COOLING FIN RADIUS DURING MANUFACTURE. IN ADDITION, CORROSION PITTING IN THE AREA OF THE FATIGUE ORIGIN AGGRAVATED THE ORIGINAL DEFECT.

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

ENGINE ASSEMBLY,CYLINDER..CRACKED

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

TERRAIN CONDITION..WET

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:

INADEQUATE QUALITY CONTROL..MANUFACTURER

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

ENGINE ASSEMBLY,CYLINDER..FATIGUE

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

TERRAIN CONDITION..NONE SUITABLE

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

INADEQUATE QUALITY CONTROL..MANUFACTURER

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