ASN Wikibase Occurrence # 368365
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| Date: | Friday 21 July 1989 |
| Time: | 13:40 LT |
| Type: | Texas Helicopter OH-13E/M74 |
| Owner/operator: | Valley Air, Inc. |
| Registration: | N47345 |
| MSN: | 76-002 |
| Total airframe hrs: | 2696 hours |
| Engine model: | LYCOMING VO-435-AIF |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Greenwood, MS -
 United States of America
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | Grenada, MS (M42) |
| Iha Bena, MS (522) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING CRUISE FLT, THE HELICOPTER WENT OUT OF CONTROL & BEGAN AN UNCOMMANDED DESCENT. THE CYCLIC & COLLECTIVE CONTROLS WERE NON-RESPONSIVE, BUT LEFT PEDAL WAS APPLIED BEFORE THE HELICOPTER CRASHED & IT CRASHED IN A TAIL LOW ATTITUDE. AN EXAM OF THE FLT CONTROLS REVEALED THAT ONE MAIN ROTOR BLADE PITCH CHANGE HORN HAD FAILED, AS WELL AS THE ATTACHING BOLTSFOR BOTH PITCH CHANGE HORNS. THERE WAS EVIDENCE THAT ONE OF THE BOLTS HAD FAILED, THEN THE OTHER FAILURES WERE FROM OVERLOAD.
Probable Cause: FAILURE OF A MAIN ROTOR BLADE PITCH CHANGE HORN AND/OR ATTACHING BOLT(S).
Accident investigation:
 |
|
Sources:
NTSB MIA89LA204
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 17:39 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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