ASN Wikibase Occurrence # 367298
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| Date: | Friday 16 March 1990 |
| Time: | 09:30 LT |
| Type: |  Robinson R22 |
| Owner/operator: | Kyodo Flight School Inc. |
| Registration: | N8079Q |
| MSN: | 1324 |
| Year of manufacture: | 1990 |
| Engine model: | LYCOMING O-320 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Paso Robles, CA -
 United States of America
|
| Phase: | Approach |
| Nature: | Training |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE ON THE DOWNWIND LEG THE CFI OBSERVED THAT THE ENGINE AND ROTOR RPM EXCEEDED THE NORMAL OPERATING PARAMETERS. THE CFI ATTEMPTED TO ROLL-OFF THE THROTTLE, BUT WAS UNABLE TO DO SO BECAUSE THE DUAL STUDENT HAD GRIPPED THE THROTTLE CONTROL. THE CFI THEN FORCEFULLY ROLLED-OFF THE THROTTLE AND THEN ATTEMPTED TO ROLL-ON THE THROTTLE BUT THIS ACTION CAUSED THE ENGINE TO SUSTAIN A TOTAL LOSS OF POWER. THE CFI IMMEDIATELY EXECUTED AN AUTOROTATION, BUT THE RPM WAS TOO SLOW TO PREVENT A HARD LANDING. THE MAIN ROTOR BLADE SEVERED THE TAIL BOOM ASSY ON LANDING.
Probable Cause: THE DUAL STUDENT PILOT FAILED TO MAINTAIN PROPER ROTOR/ENGINE POWER AND TO RELINQUISH THE THROTTLE CONTROL WHEN THE CFI ATTEMPTED TO REDUCE THE POWER.
Accident investigation:
 |
|
Sources:
NTSB LAX90LA119
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 12:51 | ASN Update Bot | Added |
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