ASN Wikibase Occurrence # 44103
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| Date: | Saturday 17 June 2006 |
| Time: | 09:00 |
| Type: |  Cessna 180 |
| Owner/operator: | Private |
| Registration: | N38SP |
| MSN: | 31668 |
| Year of manufacture: | 1955 |
| Total airframe hrs: | 7113 hours |
| Engine model: | P-Ponk O-470-50 |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Agness, OR -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Agness, OR |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane departed for a short flight between two private airstrips located less than 1 mile apart on opposite sides of a river in an area of rugged mountainous terrain. A witness at the departure airstrip reported the airplane's takeoff was uneventful. A witness at the destination airstrip reported hearing the airplane fly over heading downstream and stated that it was the pilot's routine before landing fly over. Witnesses, who were river rafting less than 1 mile downstream of the destination airstrip, observed the airplane over fly them heading downstream at an altitude of about 150 feet agl. They reported that the airplane entered a steep left turn, completed approximately 180 degrees of turn, collided with a tree and then impacted rocky terrain on the river bank. Examination of the airframe and engine revealed no evidence of any discrepancies that would have prevented normal operation of the airplane. The pilot had a history of allergies, and toxicological testing detected brompheniramine (a sedating antihistamine, available over the counter) in the pilot's blood at .223 ug/ml. The pilot also had a severe color vision deficiency. When the accident occurred, the skies were clear, and the sun was in the east at an altitude of 34.3 degrees above the horizon. As the pilot turned the airplane left from a downstream (southerly) heading to an upstream (northerly) heading, he would have been heading east directly toward the rising sun approximately midway through the turn.
Probable Cause: The pilot's failure to maintain obstacle clearance while maneuvering at low altitude, which resulted in an in-flight collision with a tree and subsequent collision with rocky terrain. A contributing factor was the sun glare.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20060626X00814&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 21-Nov-2015 08:03 | JLM | Updated [Narrative] |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 05-Dec-2017 09:14 | ASN Update Bot | Updated [Other fatalities, Source, Narrative] |
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