ASN Wikibase Occurrence # 37628
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| Date: | Monday 2 June 1986 |
| Time: | 21:42 |
| Type: |  Mitsubishi MU-2B-35 |
| Owner/operator: | Martinaire |
| Registration: | N8CC |
| MSN: | 569 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 3293 hours |
| Engine model: | AIRESEARCH TPE 331 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Bartlett, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Austin, TX (AUS) |
| D/Fw Airport, TX (DFW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ABOUT 6 MIN AFTER TAKEOFF, AT 2138:31 CDT, THE PLT RPRTD LEVEL AT 9000 FT MSL. AT 2140:17, HE TRANSMITTED THAT HE HAD TROUBLE & SAID HE COULD NOT CONTROL OR DISCONNECT THE AUTOPILOT (A/P) WHICH WAS CAUSING THE ACFT TO DESCEND. AT 2141:14,HE STATED HE WAS DESCENDING AT 6000 FT/MIN. ANOTHER COMPANY PLT IN ANOTHER ACFT ASKED IF HE COULD FIND THE BREAKER, MEANING THE A/P CIRCUIT BREAKER. AT 2141:27, THE PLT OF N8CC REPLIED, 'CALL YOU BACK.' SECONDS LATER, RADIO & RADAR CONTACT WITH N8CC WERE LOST. A SEARCH WAS INITIATED, BUT THE ACFT WAS NOT FND UNTIL THE FOLLOWING MORNING. AN EXAM REVEALED THE ACFT IMPACTED IN A STEEP, NOSE DOWN, INVERTED ATTITUDE WHILE AT HIGH SPEED; MUCH OF THE WRECKAGE WAS BURIED. NO PREIMPACT PART FAILURE/MALFUNCTION WAS FND. WITH THE A/P ENGAGED, BACK PRESSURE ON THE CONTROL COLUMN WOULD HAVE CAUSED THE A/P TO TRIM NOSE DOWN. SUBSEQUENTLY, THE MANUFACTURER ISSUED A PRECAUTIONARY ADVISORY TO ALL MU-2 OWNER/OPERATORS REGARDING PROPER OPERATION OF THE A/P AND THE VARIOUS WAYS IN WHICH IT CAN BE DISENGAGED. CAUSE:
Sources:
NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X33895
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] |
Corrections or additions? ... Edit this accident description
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