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ASN Wikibase Occurrence # 43274
Last updated: 11 April 2020
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Date:21-JUL-1995
Time:12:27
Type:Silhouette image of generic H500 model; specific model in this crash may look slightly different
McDonnell Douglas 369D
Owner/operator:City/County Of Honolulu
Registration: N1090S
C/n / msn: 800788D
Fatalities:Fatalities: 3 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Hauula, HI -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Unknown
Departure airport:HI
Destination airport:
Investigating agency: NTSB
Narrative:
THE FIRE DEPARTMENT HELICOPTER PILOT WAS FLYING WITHOUT AN OBSERVER. HE WAS INSERTING TWO POLICE OFFICERS WHO WERE IN A RESCUE NET 50 FEET BELOW THE HELICOPTER, INTO MOUNTAINOUS TERRAIN TO SEARCH FOR A MISSING HIKER. DETERIORATING WEATHER AND CLOUD COVER WITH TURBULENCE WAS PRESENT. GROUND PERSONNEL WARNED THE PILOT THREE TIMES OF THE DETERIORATING CONDITIONS. A WITNESS STATED THAT THE HELICOPTER WAS PARTIALLY IN THE CLOUDS BUT THE NET WAS IN THE CLEAR. HIKERS IN A CANYON NEAR THE ACCIDENT SITE OBSERVED THE NET SWINGING LIKE A PENDULUM THROUGH AN ARC OF 45 TO 50 DEGREES. EXAMINATION OF THE WRECKAGE REVEALED THAT THE LINE WHICH SECURED THE NET TO THE HELICOPTER BECAME ENTANGLED WITH THE MAIN ROTOR AND WAS FOUND WRAPPED AROUND THE MAIN ROTOR MAST AND ALL THE MAIN ROTOR PITCH CHANGE LINKS WERE FACTURED. THE HELICOPTER PILOT'S FIRE DEPARTMENT RECORDS INDICATED HE HAD 511 HOURS OF HELICOPTER TIME WITH 2500 HOURS OF FIXED WING TIME. RECORDS WERE RECOVERED TO DOCUMENT ABOUT 261 HOURS OF ACTUAL HELICOPTER TIME. THE PILOT HAD RECEIVED ABOUT 50 HOURS OF DUAL INSTRUCTION FROM THE FIRE DEPARTMENT CHIEF PILOT IN THEIR TYPE OF OPERATIONS. CAUSE: the pilot's poor judgement by intentionally flying into adverse weather conditions in mountainous terrain with an external load and no observer which resulted in loss of aircraft control. Factors were pressure from the conditions/events and a lack of total experience in the type of operation.

Sources:

NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001207X03984


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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