ASN Wikibase Occurrence # 379676
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| Date: | Saturday 21 April 1984 |
| Time: | 19:00 LT |
| Type: | Teratorn Tierra II |
| Owner/operator: | Hawker Flying, Inc |
| Registration: | UNREG |
| MSN: | 3113HF2T |
| Total airframe hrs: | 56 hours |
| Engine model: | ROTAX 503 |
| Fatalities: | Fatalities: / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Chico, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ULTRALIGHT WAS BEING TEST FLOWN AFTER ALTERATIONS TO THE ACFT & ITS FLIGHT CONTROL SYSTEM. THE PLT PUT THE ACFT THROUGH SOME MANEUVERS AND DURING ONE OF THEM, DESCRIBED BY WITNESSES AS A CHANDELLE, THE ACFT NOSED DOWN & CRASHED INTOTHE GROUND. THE ACFT DOVE FROM ABOUT 300 FT AGL. INVESTIGATION REVEALED THAT AN ELEVATOR CONTROL SEAT HORN HAD FAILED & SEPARATED IN FLT. PARTS OF THIS FAILED PART WERE NOT FOUND IN THE WRECKAGE. THIS CONTROL PART HAD BEEN MODIFIED WITH MORE SPACING WASHERS THAN REQUIRED WHICH INCREASED ITS TORSIONAL LOADING. AFTER THIS FAILURE, THE PLT HAD NO CONTROL OVER THE ACFT ELEVATOR.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB LAX84FU026
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 08:16 | ASN Update Bot | Added |
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