ASN Wikibase Occurrence # 218734
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| Date: | Tuesday 10 May 1988 |
| Time: | 08:45 |
| Type: |  Cessna A188/A1 |
| Owner/operator: | |
| Registration: | VH-IRG |
| MSN: | 18801562 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 70km SW of Tara, QLD -
 Australia
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | 60km SW Tara, QLD |
| 60km SW Tara, QLD | |
| Investigating agency: | BASI |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was to spray weeds in four areas marked 1-4 on the plan of the property he had been given. He conducted an airborne inspection during which he noted a single power line, running east west, along the northern side of area 1. Adjacent to the power line was an area of seed lucerne which the property owner emphasised was not to be sprayed. Area 1 was immediately south of area 2 while areas 3 and 4 were some distance away and well clear of the power line. There was sufficient daylight remaining for the pilot to spray areas 3 and 4 and to partially complete area 2 flying runs parallel to the wire. That evening, there was some disagreement between the pilot and the property owner as to whether the correct ratio of chemical had been used, and the property owner again emphasised that he did not want any spray to fall on the seed lucerne. The following morning, without conducting a further aerial inspection, the pilot sprayed the remainder of area 2 and, while waiting for the markers to position themselves in area 1, he decided to do a clean-up run from north to south along the western edge of area 2. He recalled that, as he flew the run, foremost in his mind was the need to avoid spraying the seed lucerne. The aircraft struck the power line at the completion of this run. The wires became caught in the engine upper cowl and rolled the aircraft so that it impacted the ground right wing first. The right wing was torn from the fuselage as the aircraft cartwheeled. The pilot, who was wearing a helmet, received serious facial injuries in the accident. It was found that the left hand lap toggle in the safety harness buckle had failed on impact, allowing the pilot to be thrown forward and to the right into the instrument panel/coaming. Metallurgical examination showed that the toggle failed due to insufficient strength caused by inadequate heat treatment during manufacture.
Accident investigation:
 |
|
Sources:
https://www.atsb.gov.au/publications/investigation_reports/1988/aair/aair198803456/
https://www.atsb.gov.au/media/33683/aair198803456.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Nov-2018 10:29 | Pineapple | Added |
Corrections or additions? ... Edit this accident description
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