ASN Wikibase Occurrence # 29411
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| Date: | Tuesday 22 January 2002 |
| Time: | 15:00 |
| Type: |  Schleicher ASW 20 |
| Owner/operator: | |
| Registration: | ZK-GVW |
| MSN: | 20378 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Ben Ohau Range, Canterbury -
 New Zealand
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | CAA NZ |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
The glider was launched from Omarama Airfield at approximately 14:00 hours. The flight progressed in an anti-clockwise direction in the vicinity of the Omarama valley in the company of three other gliders. Altitude was gained by ridge soaring and thermal flying. Just prior to the accident, ZK-GVW was gaining altitude by flying lefthand circuits close to a ridge to utilize the available lift. While turning left toward the scree slope the glider was seen, by one of the other glider pilots soaring at a higher altitude, to do what appeared to be a wing-over to the left followed by a vertical dive towards the ground. With the grey scree slope blending into the grey overcast conditions, it is likely that the pilot became disoriented due to lack of visual cues and was unable to accurately judge the glider's bank angle and proximity to the slope. It is possible that the pilot misjudged the glider's radius of turn towards the slope. This may have occurred for a number of reasons, including distraction, misidentifying the size of an object on the slope, or looking away from the slope for too long. If the pilot assessed the radius of turn to be too large to complete the manoeuvre, his response would most likely have been to increase the bank angle and G loading. This may have resulted in an incipient spin to the left, which is consistent with the manoeuvre described by the other glider pilots.
Accident investigation:
 |
|
Sources:
NZ CAA Accident Report 02/99
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 04-Feb-2022 17:16 | Ron Averes | Updated [Location, Source, Narrative] |
Corrections or additions? ... Edit this accident description
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