ASN Wikibase Occurrence # 295506
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Date: | Friday 18 July 2003 |
Time: | 14:35 LT |
Type: | Mooney M20F |
Owner/operator: | Private |
Registration: | N353JT |
MSN: | 67053 |
Engine model: | Lycoming IO-360-A1A |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Kerrville, Texas -
United States of America
|
Phase: | Unknown |
Nature: | Private |
Departure airport: | San Angelo-Mathis Field, TX (SJT/KSJT) |
Destination airport: | San Antonio-Stinson Municipal Airport, TX (SSF/KSSF) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The 6,533-hour pilot reported that the engine developed a vibration during cruise flight. The pilot suspected a runaway propeller, and elected to shut down the engine. During the forced landing, the airplane went through a fence and impacted terrain. Examination of the engine revealed that the number three cylinder had separated from the 200 horsepower Lycoming engine. Metallurgical evaluation by the NTSB Materials Laboratory revealed that the crankcase bolts were found to be fractured from stress fatigue cracking, and concluded that fatigue failure on cylinder mounting hardware is usually the result of insufficient torque loading.
Probable Cause: The loss of engine power due to the failure of the number three cylinder as the result of undertorqued cylinder bolts. A contributing factor was the lack of suitable terrain for the forced landing.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | FTW03LA188 |
Status: | Investigation completed |
Duration: | 5 months |
Download report: | Final report |
|
Sources:
NTSB FTW03LA188
Revision history:
Date/time | Contributor | Updates |
13-Oct-2022 09:20 |
ASN Update Bot |
Added |
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