ASN Wikibase Occurrence # 39668
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| Date: | Friday 11 August 1989 |
| Time: | 21:18 |
| Type: |  Beechcraft A36 Bonanza |
| Owner/operator: | Private |
| Registration: | N25805 |
| MSN: | E2310 |
| Total airframe hrs: | 314 hours |
| Engine model: | CONTINENTAL IO-520-BB |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Chapel Hill, NC -
 United States of America
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Kinston, NC (ISO) |
| Smithfield, NC (W27) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AT 2028, AFTER A MISSED APCH AT DESTINATION, THE PLT REPORTED HE COULDN'T GET THE AUTOPILOT OFF & WAS FIGHTING HARD TO CONTROL THE AIRPLANE. ATC OFFERED SUGGESTIONS TO DISENGAGE AUTOPILOT, INCLUDING TURNING OFF MASTER SWITCH; PLT REPORTED NO CHANGE. DURING THE NEXT 45 MINUTES THE PILOT WAS PROVIDED VECTORS AND ASSISTANCE; PLT FREQUENTLY DID NOT RESPOND TO INSTRUCTIONS. FINAL VECTORS WERE TO CHAPEL HILL AIRPORT; RADAR DATA LOST. WRECKAGE ORIENTED OVER AN AREA OF A NORMAL BASE TO RWY 8. ELEVATOR TRIM WAS FOUND IN A FULL TAB-UP (NOSE-DOWN) POSITION. APRX 45 LBS OF STICK FORCE WOULD BE NECESSARY TO HOLD THE AIRPLANE LEVEL. THE APPROVED FLIGHT MANUAL SUPPLEMENT FOR THE KING KFC 200 AUTOPILOT SYSTEM CONTAINED EMERGENCY PROCEDURES FOR AUTOPILOT/ELECTRIC TRIM MALFUNCTIONS. THESE PROCEDURES REQUIRE THAT THE AIRCRAFT BE RETRIMMED MANUALLY. CAUSE: THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE WHILE MANEUVERING FOR A LANDING. CONTRIBUTING FACTORS WERE: THE PILOT'S FAILURE TO FOLLOW THE EMERGENCY PROCEDURES FOR AN AUTOPILOT MALFUNCTION, AND PILOT FATIGUE.
Sources:
NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X29026
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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