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ASN Wikibase Occurrence # 264204
Last updated: 13 November 2021
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Date:08-JUL-2018
Time:09:20 LT
Type:Silhouette image of generic H500 model; specific model in this crash may look slightly different
Hughes 369D
Owner/operator:Magnum Helicopters
Registration: N369MH
MSN: 380287D
Fatalities:Fatalities: 0 / Occupants: 4
Other fatalities:0
Aircraft damage: Substantial
Location:near Honolulu, HI -   United States of America
Phase: En route
Nature:Passenger - Non-Scheduled/charter/Air Taxi
Departure airport:Honolulu International Airport (HNL), HI
Destination airport:Honolulu International Airport (HNL), HI
Narrative:
The pilot of the helicopter commercial air tour flight stated that the helicopter was in cruise flight at an altitude of about 1,800 ft when, about 11 minutes after takeoff, he felt "severe" vibrations and then heard a "loud bang," after which the helicopter began to shake "violently." The pilot entered a power-on autorotation and conducted a partial run-on landing in a field.

Examination revealed that multiple tail rotor blade and gearbox components had failed in flight, rendering the helicopter substantially damaged.

Probable cause: The operator's improper installation of the tail rotor (TR) teeter bearings, which resulted in cascading in-flight failures of the TR components and attach hardware.

Sources:

https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/98062/pdf
http://aerossurance.com/helicopters/improper-installation-bearings/

Media:


Revision history:

Date/timeContributorUpdates
19-Jun-2021 11:51 Aerossurance Added
19-Jun-2021 12:22 Aerossurance Updated [Source, Embed code]

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