ASN Wikibase Occurrence # 361188
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| Date: | Wednesday 6 October 1993 |
| Time: | 11:30 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | Miami Helicopter Service, Inc. |
| Registration: | N95AF |
| MSN: | S1574 |
| Year of manufacture: | 1991 |
| Total airframe hrs: | 378 hours |
| Engine model: | LYCOMING HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Opa-locka, FL -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | (KOPF) |
| (KOPF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER WAS INVOLVED IN A PREVIOUS ACCIDENT INVOLVING A TAIL ROTOR STRIKE. AS A RESULT, IN PART, THE 4 LANDING GEAR DAMPERS WERE SERVICED. THE HELICOPTER WAS REPAIRED, INSPECTED, AND SIGNED OFF FOR RETURN TO SERVICE. TESTS OF THE MAIN ROTOR TRACK AND BALANCE WERE PERFORMED WITH NO DISCREPANCIES NOTED. THE PILOT REPORTED THAT AS HE LANDED FROM A HOVER, THE HELICOPTER BEGAN TO OSCILLATE FORE AND AFT (APPARENT GROUND RESONANCE). AT THE TIME, FULL POWER WAS APPLIED AND THE COLLECTIVE CONTROL WAS DOWN. REPORTEDLY, THE PILOT DID NOT RAISE THE COLLECTIVE. SUBSEQUENTLY, THE LEFT SKID FAILED, AND THE HELICOPTER ROLLED ONTO ITS LEFT SIDE. THREE OF THE 4 LANDING GEAR DAMPERS WERE DETERMINED TO BE IMPROPERLY SERVICED. THE MAIN ROTOR BLADE DAMPERS WERE TESTED AND WERE FOUND TO BE FREE OF PREIMPACT FAILURE OR MALFUNCTION.
Probable Cause: IMPROPER SERVICING OF THREE OF THE FOUR MAIN LANDING GEAR DAMPERS BY COMPANY MAINTENANCE PERSONNEL, AND INNADEQUATE REMEDIAL ACTION BY THE PILOT AS GROUND RESONANCE BEGAN.
Accident investigation:
 |
|
Sources:
NTSB MIA94LA002
History of this aircraft
Other occurrences involving this aircraft
| 18 August 1993 | N95AF | Helicopter Tng Academy Inc. | 0 | Punta Gorda, FL | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 15:44 | ASN Update Bot | Added |
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