ASN Wikibase Occurrence # 356878
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Date: | Saturday 10 August 1996 |
Time: | 15:25 LT |
Type: | Hughes 269A |
Owner/operator: | Helicopter Technologies, Inc. |
Registration: | N8784F |
MSN: | 72-0110 |
Engine model: | Lycoming HIO-360-B1A |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Cottondale, FL -
United States of America
|
Phase: | Landing |
Nature: | Unknown |
Departure airport: | |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The main rotor blade dampners had been overhauled just before the flight. After liftoff, the pilot began to feel severe vertical and lateral vibrations. He noticed that one rotor blade was tracking 12-18 inches out of the normal plane. As the pilot set the helicopter down, it began to come apart due to ground resonance. Examination of the main rotor blade dampners by an FAA inspector showed they had not been reassembled in accordance with the manufacturers maintenance manual. The maintenance manual stated that an improper assembly of the blade dampners could lead to ground resonance and destruction of the helicopter.
Probable Cause: improper assembly of the main rotor blade dampners by a mechanic which resulted in the helicopter being damaged by ground resonance.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | MIA96LA209 |
Status: | Investigation completed |
Duration: | 5 months |
Download report: | Final report |
|
Sources:
NTSB MIA96LA209
Location
Revision history:
Date/time | Contributor | Updates |
13-Mar-2024 11:48 |
ASN Update Bot |
Added |
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