ASN Wikibase Occurrence # 371945
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| Date: | Saturday 31 October 1987 |
| Time: | 17:58 LT |
| Type: |  Enstrom F-28A |
| Owner/operator: | Private |
| Registration: | N9583 |
| MSN: | 112 |
| Total airframe hrs: | 1178 hours |
| Engine model: | LYCOMING HIO-360-A1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lapeer, MI -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Romeo, MI (D98) |
| Lupton, MI | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER WAS IN CRUISE FLT WHEN THE RGT SIDE HORIZONTAL STABILIZER ATTACH TUBE FAILED & SEPARATED FROM THE TAIL BOOM, THEN CONTACTED THE TAIL ROTOR. THIS RESULTED IN FAILURE OF THE TAIL ROTOR DRIVE SHAFT FLEX COUPLING AT THE TAIL ROTOR GEAR BOX. IN TURN, THERE WAS A LOSS OF TAIL ROTOR THRUST. THE PLT MADE A SUCCESSFUL AUTOROTATION IN AN OPEN FIELD. AN EXAM OF THE RGT HORIZONTAL STABILIZER ATTACH TUBE REVEALED IT HAD FAILED FROM FATIGUE AT THE RGT INBOARD ATTACH HOLE. THE FATIGUE ORIGINATED AT A SURFACE DEFECT ON THE OUTER DIAMETER OF THE TUBE WHICH WAS CAUSED BY MISALIGNED DRILLING.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB CHI88LA014
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Mar-2024 11:49 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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