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ASN Wikibase Occurrence # 46448
Last updated: 26 April 2019
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Date:10-JAN-1998
Time:19:25 LT
Type:Silhouette image of generic H269 model; specific model in this crash may look slightly different
Hughes 269C
Owner/operator:
Registration: ZK-HHS
C/n / msn: 1230259
Fatalities:Fatalities: 1 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:5 km north of Ngongotaha -   New Zealand
Phase: En route
Nature:Survey
Departure airport:
Destination airport:
Narrative:
The helicopter was patrolling an 11kV power line, which had been suffering from some unexplained power interruptions. During the patrol, the main rotor blades struck one conductor of a three-conductor, 110kV transmission line, which crossed about six metres above the 11kV line being inspected.

The primary cause of this accident was the failure by the pilot to detect another power line, which crossed above the line being inspected.

Contributory factors were that: The pilot and the observer were not adequately trained; A number of briefings were omitted or inadequate; The lack of a formal system for the selection, direction and control of the aerial work undertaken by the contracting organisation; Environmental factors: The suitability of the available helicopter.

Sources:

http://www.caa.govt.nz/Accidents_and_Incidents/Accident_Reports/ZK-HHS_Fatal_10Jan1998.pdf


Revision history:

Date/timeContributorUpdates
04-Nov-2008 10:35 ASN archive Added
16-Aug-2014 13:58 Aerossurance Updated [Time, Cn, Location, Phase, Nature, Source, Narrative]

Corrections or additions? ... Edit this accident description