ASN Wikibase Occurrence # 365427
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Date: | Saturday 20 April 1991 |
Time: | 08:00 LT |
Type: | Bell 47G-3B1 |
Owner/operator: | Firefly Leasing, Inc. |
Registration: | N1166W |
MSN: | 2055 |
Engine model: | LYCOMING TVO-435-B1A |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Harwich, MA -
United States of America
|
Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
Nature: | Agricultural |
Departure airport: | |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:THE HELICOPTER EXPERIENCED A LOSS OF LIFT THROUGH THE MAIN ROTOR SYSTEM AND MADE A HARD LANDING. POST CRASH EXAMINATION SHOWED THE CLUTCH HAD RECENTLY BEEN REMOVED AND DISASSEMBLED FOR INSPECTION. THE CLUTCH WAS RETURNED TO SERVICE WITH ONLY 25 PERCENT SHOE/DRUM CONTACT. MAINTENANCE PERSONNEL HAD NOT FOLLOWED THE PROCEDURES CONTAINED IN THE OVERHAUL MANUAL.
Probable Cause: A FAILURE OF THE CLUTCH DURING TAKEOFF DUE TO IMPROPER MAINTENANCE PROCEDURES. FACTORS RELATED TO THE ACCIDENT WERE INSUFFICIENT ALTITUDE TO ESTABLISH AN AUTOROTATION.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | NYC91DNA02 |
Status: | Investigation completed |
Duration: | 2 years |
Download report: | Final report |
|
Sources:
NTSB NYC91DNA02
Revision history:
Date/time | Contributor | Updates |
20-Mar-2024 10:04 |
ASN Update Bot |
Added |
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