ASN Wikibase Occurrence # 43188
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| Date: | Thursday 14 September 2000 |
| Time: | 18:10 |
| Type: |  Air Tractor AT-502 |
| Owner/operator: | Locker Flying Service |
| Registration: | N1508V |
| MSN: | 502-0144 |
| Total airframe hrs: | 3000 hours |
| Engine model: | P&W PT6A |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lariat, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Muleshoe, TX (TA87) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A witness observed the agricultural airplane making several spray passes over the field in which an antenna tower was located. The witness observed the aircraft making a 'very low spray pass.' He then observed the airplane pull nose up and bank to the left. The right wing contacted the uppermost guy wire on the north side of the antenna. Subsequently, the wire snapped 'causing the upper part of the tower to fall.' The witness added that the impact with the wire had 'disrupted the flight of the aircraft by spinning it to the right.' The airplane then impacted the ground and caught fire. The pilot had accumulated approximately 15,750 total flight hours, of which an unknown amount were in the accident airplane. According to toxicology tests, 0.071 ug/ml of diphenhydramine was detected in the pilot's blood, and an unquantified amount was found in the urine. Diphenhydramine is an over-the-counter drug used as an antihistamine. Results of a study on diphenhydramine concluded that it adversely affects a person's ability to maneuver an automobile.
Probable Cause: The pilot's failure to maintain clearance with the antenna guy wire. A factor was the pilot's physical impairment from his use of diphenhydramine.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X21980&key=1
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 12-Dec-2017 19:09 | ASN Update Bot | Updated [Source, Narrative] |
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