ASN Wikibase Occurrence # 363372
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| Date: | Thursday 2 July 1992 |
| Time: | 12:00 LT |
| Type: | Schweizer 269D |
| Owner/operator: | Schweitzer Aircraft Corp. |
| Registration: | N330TT |
| MSN: | 51246T |
| Total airframe hrs: | 1189 hours |
| Engine model: | Allison 250/C2OW |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Watkins Glen, NY -
 United States of America
|
| Phase: | Taxi |
| Nature: | Unknown |
| Departure airport: | Elmira, NY (KELM) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A CERTIFICATION TEST FLIGHT INVOLVING A SERIES OF DESCENTS AT LOW ROTOR RPM AND LOW AIRSPEEDS, THE ENGINE OF THE PROTOTYPE HELICOPTER LOST POWER. AN AUTOROTATION WAS INITIATED AND THE AIRCRAFT IMPACTED THE GROUND IN A TAIL LOW CONDITION, CAUSING DAMAGE TO THE TAIL ROTOR AND MAIN ROTOR. THE AIRCRAFT WAS BEING OPERATED AT A HIGH GROSS WEIGHT AND AFT CENTER OF GRAVITY TO MEET CERTIFICATION CRITERIA. THE RIGGING BETWEEN THE THROTTLE AND FUEL CONTROL UNIT WAS EXAMINED AND FOUND TO BE IMPROPERLY SET, CAUSING THE PREVENTION OF CONTINUOUS ENGINE POWER THROUGHOUT THE FLIGHT TEST PROFILE.
Probable Cause: FUEL STARVATION AS A RESULT OF IMPROPER RIGGING OF THE FUEL CONTROL UNIT.
Accident investigation:
 |
|
Sources:
NTSB BFO92LA085
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Mar-2024 16:31 | ASN Update Bot | Added |
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