ASN Wikibase Occurrence # 45917
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| Date: | Monday 4 June 2001 |
| Time: | 17:15 |
| Type: |  Bell UH-1H |
| Owner/operator: | Wanganui Aero Work Ltd |
| Registration: | ZK-HJH |
| MSN: | 4530 |
| Year of manufacture: | 1965 |
| Fatalities: | Fatalities: 3 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | near Taumarunui, King Country -
 New Zealand
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | Auckland |
| Wanganui | |
| Investigating agency: | TAIC |
| Confidence Rating: |  Accident investigation report completed and information captured |
On Monday 4 June 2001 at about 1715, ZK-HJH, a Bell UH-1H Iroquois helicopter, was approaching Taumarunui when it was seen to enter a turn and fall to the ground, killing the three occupants. The helicopter was observed to break up before it hit the ground.
TAIC reopened the investigation after two other UH-1 accidents.
After considerable component and metallurgical testing and examination of all the available evidence, the resumed investigation could not support the original theory that the accident sequence was probably caused by the tail rotor crosshead coming loose, because of incorrect maintenance.
The resumed investigation found that a bent tail rotor blade pitch link and its subsequent fatigue failure during the accident flight brought about a loss of control and in-flight break-up of the helicopter. The link had been bent earlier at some point during the accident flight, which allowed it to crack and eventually fail from bending fatigue. The reason the link was bent could not be determined.
Accident investigation:
 |
|
Sources:
http://www.ntsb.gov/ntsb/brief.asp?ev_id=20010613X01163&key=1
http://www.taic.org.nz/ReportsandSafetyRecs/AviationReports/tabid/78/ctl/Detail/mid/482/InvNumber/2001-005/Page/11/language/en-US/Default.aspx?SkinSrc=[G]skins%2ftaicAviation%2fskin_aviation
http://www.taic.org.nz/ReportsandSafetyRecs/AviationReports/tabid/78/ctl/Detail/mid/482/InvNumber/2001-005R/Page/6/language/en-US/Default.aspx?SkinSrc=[G]skins%2ftaicAviation%2fskin_aviation
http://skyviking.net/svwp/?p=412
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 16-Aug-2014 17:36 | Aerossurance | Updated [Operator, Departure airport, Destination airport, Source, Narrative] |
| 17-Aug-2014 06:21 | Aerossurance | Updated [Source] |
| 17-Jul-2020 23:33 | Ron Averes | Updated [Operator, Location, Source] |
| 16-Feb-2022 01:33 | Ron Averes | Updated [Location] |
Corrections or additions? ... Edit this accident description
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