ASN Wikibase Occurrence # 368422
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| Date: | Tuesday 11 July 1989 |
| Time: | 14:25 LT |
| Type: |  Enstrom F28F |
| Owner/operator: | Oakland Police Dept. |
| Registration: | N288 |
| MSN: | 742 |
| Total airframe hrs: | 3304 hours |
| Engine model: | LYCOMING HIO-360-F1AD |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Oakland, CA -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Oakland, CA (KOAK) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE CERTIFICATED PRIVATE PILOT ELECTED TO CONDUCT A PRACTICE AUTOROTATION WITH TURN AND RECOVER WITH POWER. THE PILOT WAS FLYING WITH A PASSENGER. THE PILOT ALLOWED THE ROTOR RPM TO BLEED OFF AND WAS UNABLE TO RECOVER THE RPM BEFORE TOUCHDOWN. THE HELICOPTER LANDED HARD COLLAPSING THE SKID TYPE LANDING GEAR SYSTEM. THE MAIN ROTOR THEN CONTACTED THE TAILBOOM. THE HELICOPTER SLID ABOUT 100 FEET AFTER TOUCHDOWN AND ROTATED 90 DEGREES TO THE LEFT.
Probable Cause: FAILURE OF THE PILOT TO PROPERLY MAINTAIN ROTOR RPM THROUGHOUT THE AUTOROTATION.
Accident investigation:
 |
|
Sources:
NTSB LAX89FA238
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 18:17 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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