ASN Wikibase Occurrence # 37625
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| Date: | Monday 1 July 1991 |
| Time: | 12:00 LT |
| Type: |  Hughes 269C |
| Owner/operator: | Flight Safety International |
| Registration: | N11017 |
| MSN: | 900964 |
| Total airframe hrs: | 3844 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Blakely, GA -
 United States of America
|
| Phase: | Approach |
| Nature: | Training |
| Departure airport: | Albany, GA (KABY) |
| Dothan, AL (KDHN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLT WAS FOR THE PURPOSE OF X-COUNTRY TRAINING. THE FLT INSTRUCTOR (CFI) CLOSED THE THROTTLE AT AN ALT OF ABT 900' AGL TO SIMULATE AN ENG FAILURE. DRG A SUBSEQUENT AUTOROTATION, ENG RPM WAS NOT MAINTD AT 2500 AS RCMDD BY THE PLT'S OPERG HANDBOOK (POH). THE STUDENT ALLOWED THE ROTOR RPM TO DETERIORATE DRG AN ATMTD PWR ON RECOVERY AT ABT 700' AGL AS HE DID NOT REALIZE THE ENG HAD STOPPED RUNNING. THE CFI ATMTD TO RESTART THE ENG AFTER TAKING CTL OF THE HELICOPTER AT ABT 700' AGL. THE STUDENT RPRTD THE ROTOR RPM REMAINED LOW DRG THE DSCNT. SUBSEQUENTLY, THE HELICOPTER IMPACTED IN A LARGE FLD. THE STUDENT STATED THAT THE HELICOPTER FELT AS IF IT JUST DROPPED THE LAST FEW FT OF THE AUTOROTATION. NO REASON WAS VERIFIED FOR THE LOSS OF ENG PWR. THE POH STATED THAT RPM SHOULD HAVE BEEN MAINTD DRG PRACTICE AUTOROTATIONS & THAT ENG RESTARTS SHOULD NOT BE ATMTD BELOW 2000' AGL.
Probable Cause: LOSS OF ENGINE POWER FOR AN UNDETERMINED REASON, AND FAILURE OF THE INSTRUCTOR PILOT (CFI) TO FOLLOW PROCEDURES AND MAINTAIN ROTOR RPM.
Accident investigation:
 |
|
Sources:
NTSB ATL91FA120
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] |
| 11-Apr-2024 14:19 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Accident report] |
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