ASN Wikibase Occurrence # 359749
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| Date: | Thursday 22 September 1994 |
| Time: | 11:45 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Same As Registered Owner |
| Registration: | N58352 |
| MSN: | D1290626D |
| Total airframe hrs: | 9437 hours |
| Engine model: | Allison250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Genoa, NV -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Minden, NV (KMEV) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FAA OPERATIONS INSPECTOR WAS OBTAINING FLIGHT TIME FOR RECURRENCY WHILE ADMINISTERING A PROFICIENCY CHECK TO THE PILOT/OPERATOR (PLT). BEFORE FLIGHT, THE INSPECTOR GAVE AN ORAL EXAM TO THE PLT. WHILE PREPARING FOR FLIGHT, THE PLT TOLD THE INSPECTOR THAT THE THROTTLE ON THE RIGHT COLLECTIVE WAS INOPERATIVE (DISCONNECTED), BUT THE INSPECTOR DID NOT ASSIMILATE THIS INFORMATION. ALSO, DURING THE PREFLIGHT INSPECTION, THE INSPECTOR (IN THE LEFT SEAT) DID NOT CHECK THROTTLE CONTINUITY TO THE RIGHT COLLECTIVE CONTROL. DURING THE FIRST PART OF THE FLIGHT, THE INSPECTOR FLEW THE HELICOPTER MOST OF THE TIME. HE THEN PROCEEDED TO HAVE THE PLT PERFORM SPECIFIC MANEUVERS TO SATISFY THE REQUIREMENTS OF A PROFICIENCY CHECK. WHILE RETURNING TO THE AIRPORT, THE INSPECTOR REDUCED HIS THROTTLE TO FLIGHT IDLE TO SIMULATE AN ENGINE FAILURE; HE THEN TRANSFERRED THE CONTROLS TO THE PLT & TOLD HIM TO PERFORM AN AUTOROTATION. THE PLT DID NOT REALIZE THAT THE INSPECTOR HAD REDUCED POWER TO FLIGHT IDLE WITH THE OPERABLE (LEFT) THROTTLE UNTIL HE RAISED THE RIGHT COLLECTIVE IN AN ATTEMPT TO FLY OUT OF THE AUTOROTATION NEAR THE GROUND. SUBSEQUENTLY, THE HELICOPTER SUSTAINED A HARD LANDING. AN INVESTIGATION DISCLOSED THAT THE PILOT/OPERATOR HAD THE RIGHT COLLECTIVE THROTTLE LINKAGE DISCONNECTED ABOUT 2 YEARS BEFORE THE FLIGHT.
Probable Cause: THE PILOT/OPERATOR'S OPERATION OF THE HELICOPTER WITH A DISCONNECTED THROTTLE ON THE RIGHT COLLECTIVE; THE FAA INSPECTOR'S INADEQUATE PREFLIGHT/PRETAKEOFF CHECKS OF THE FLIGHT CONTROL/THROTTLE SYSTEMS; AND THE PILOT/OPERATOR'S FAILURE TO ADEQUATELY INFORM THE INSPECTOR OF THE DISCONNECTED RIGHT THROTTLE, WHICH RESULTED IN AN INADEQUATE POWER RECOVERY FROM AN INSPECTOR INITIATED AUTOROTATION.
Accident investigation:
 |
|
Sources:
NTSB LAX94FA372
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 14:10 | ASN Update Bot | Added |
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