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ASN Wikibase Occurrence # 43439
 
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Date:04-JUL-1987
Time:14:45
Type:Silhouette image of generic AS55 model; specific model in this crash may look slightly different
Aérospatiale AS 355F-1
Owner/operator:Petroleum Helicopters (PHI)
Registration: N5796M
MSN: 5162
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
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
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/timeContributorUpdates
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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