ASN Wikibase Occurrence # 361674
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| Date: | Thursday 15 July 1993 |
| Time: | 18:45 LT |
| Type: |  Piper PA-11 |
| Owner/operator: | Private |
| Registration: | N4834M |
| MSN: | 11-345 |
| Year of manufacture: | 1947 |
| Total airframe hrs: | 1217 hours |
| Engine model: | CONTINENTAL A-65-8F |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Burkburnett, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Wichita Falls, TX (SPS |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER SIGHTSEEING FOR ABOUT 30 MINUTES, THE PILOT INITIATED A RIGHT BANK TO RETURN TO THE AIRPORT. THE AIRPLANE BEGAN DESCENDING AND FULL BACK PRESSURE WOULD NOT ARREST THE DESCENT. THE PILOT LEVELED THE WINGS AND APPLIED FULL POWER. THE AIRPLANE IMPACTED A RIVER SAND BAR. POST-ACCIDENT EXAMINATION DISCLOSED THE UP ELEVATOR CABLE WAS DISCONNECTED FROM THE CONTROL HORN. A BOLT, SEVERAL CASTLE NUTS, WASHERS, SHEET METAL SCREWS, A SPACER AND A REMNANT OF A COTTER PIN WERE VACUUMED FROM THE FLOOR OF THE AIRPLANE BENEATH THE ELEVATOR CONTROL HORN. THE AIRPLANE HAD ACCUMULATED 142 HOURS SINCE THE LAST ANNUAL INSPECTION 10 MONTHS BEFORE THE ACCIDENT.
Probable Cause: THE DISCONNECTION OF THE UP ELEVATOR CABLE FROM THE CONTROL HORN. A FACTOR WAS THE INCORRECT INSTALLATION OF THE BOLT AND CASTLE NUT BY UNKNOWN MAINTENANCE PERSONNEL.
Accident investigation:
 |
|
Sources:
NTSB DEN93LA079
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 17-Mar-2024 06:37 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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