ASN Wikibase Occurrence # 43439
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Date: | Saturday 4 July 1987 |
Time: | 14:45 |
Type: | Aérospatiale AS 355F-1 |
Owner/operator: | Petroleum Helicopters (PHI) |
Registration: | N5796M |
MSN: | 5162 |
Total airframe hrs: | 4460 hours |
Engine model: | ALLISON 250-C20F |
Fatalities: | Fatalities: 1 / Occupants: 1 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | Venice, LA -
United States of America
|
Phase: | En route |
Nature: | Unknown |
Departure airport: | Venice, LA (7R1) |
Destination airport: | Gulf Of Mexico |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:ONE OF THE MECHANICS WHO PERFORMED MAINTENANCE ON THE AIRCRAFT MAIN ROTOR HEAD STATED THAT HE WAS NOT SURE THAT HE INSTALLED THE RETAINING BOLTS WHICH SECURED THE VIBRATION ABSORBER ASSEMBLY TO THE AIRCRAFT. METALLURGICAL ANALYSIS OF THE ASSEMBLY INDICATED THAT THE RETAINING BOLTS WERE NOT INSTALLED AT IMPACT. EXAMINATION OF THE WRECKAGE SUGGESTS THAT THE VIBRATION ABSORBER ASSEMBLY SEPARATED FROM THE AIRCRAFT AND CONTACTED THE MAIN ROTOR SYSTEM RESULTING IN LOSS OF AIRCRAFT CONTROL AND SUBSEQUENT CONTACT WITH THE TERRAIN (WATER). WITNESSES OBSERVED THE HELICOPTER COME APART IN FLIGHT AFTER HEARING A LOUD 'BOOM'. CAUSE:
Sources:
NTSB:
http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X31507 Revision history:
Date/time | Contributor | Updates |
24-Oct-2008 10:30 |
ASN archive |
Added |
21-Dec-2016 19:24 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
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