ASN Wikibase Occurrence # 133123
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| Date: | Saturday 25 July 1992 |
| Time: | 15:00 LT |
| Type: |  Piper PA-38-112 Tomahawk |
| Owner/operator: | Stramel Aviation Inc. |
| Registration: | N9240T |
| MSN: | 3878A0288 |
| Total airframe hrs: | 2439 hours |
| Engine model: | Lycoming O-235-L2C |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Carrollton, TX -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Addison, TX (KADS) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT WAS DESCENDING THE AIRPLANE INTO THE CONTROL ZONE AND HAD RECEIVED CLEARANCE TO ENTER A RIGHT BASE FOR RUNWAY 15 WHEN THE ENGINE QUIT AFTER HE APPLIED CARBURETOR HEAT. THE PILOT MADE A 180 DEGREE TURN AND DESCENDED OVER ONE OPEN GRASS FIELD AS HE ATTEMPTED TO GLIDE TO A DIRT FIELD. A FENCE AND A RAILROAD TRACK LAY BETWEEN THE FIELDS. THE AIRPLANE STRUCK THE FENCE, ROTATED APPROXIMATELY 180 DEGREES, AND DESCENDED OUT OF CONTROL TO IMPACT THE TERRAIN NEAR THE RAILROAD TRACKS. THE INVESTIGATION REVEALED THE MAIN VALVE FOR THE CARBURETOR HEAT BOX HAD FAILED AND WAS SUCKED INTO THE CARBURETOR INLET, BLOCKING AIR FLOW, AND RENDERED THE CARBURETOR INOPERATIVE. FURTHER INVESTIGATION REVEALED THAT PORTIONS OF THE VALVE ASSEMBLY HAD BEEN FAILING FOR AN UNSPECIFIED TIME PRIOR TO THE ACCIDENT AND ITS' RETAINING SCREWS HAD NOT BEEN SECURED PROPERLY.
Probable Cause: THE PILOT'S SELECTION OF UNSUITABLE TERRAIN. FACTORS WERE THE FAILED CARBURETOR DE-ICE SYSTEM VALVE RESULTING IN AN INOPERATIVE CARBURETOR AND THE INADEQUATE ANNUAL INSPECTION BY COMPANY MAINTENANCE PERSONNEL.
Accident investigation:
 |
|
Sources:
NTSB FTW92LA188
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 19:16 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Source, Narrative, Category, Accident report] |
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