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ASN Wikibase Occurrence # 146232
Last updated: 12 December 2017
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Date:09-JUN-2012
Time:12:32
Type:Silhouette image of generic PA32 model; specific model in this crash may look slightly different
Piper PA-32-300 Cherokee Six C
Owner/operator:Private
Registration: N8990N
C/n / msn: 32-40873
Fatalities:Fatalities: 1 / Occupants: 1
Airplane damage: Substantial
Category:Accident
Location:House Mountain, northeast of Mountain Home, Elmore County, ID -   United States of America
Phase: En route
Nature:Private
Departure airport:Rock Springs, WY (RKS)
Destination airport:Nampa, ID (MAN)
Investigating agency: NTSB
Narrative:
The noninstrument rated pilot was on a visual flight rules cross-country flight, headed west over mountainous terrain. He had been en route about 3 hours and was about 60 nautical miles from his destination when the accident occurred. Radar data indicated that until a few minutes before the accident, the pilot maintained a direct course west toward the destination. During the last 2 minutes of the flight, the airplane turned left to an east heading then immediately turned right, back to a west/northwest heading. The last radar return showed the airplane at an altitude of 7,600 feet mean sea level (msl) about 0.27 mile from the accident site. The airplane impacted terrain at an elevation of about 7,400 feet in a right-wing-low attitude.

Weather radar showed rain/snow showers and satellite imagery showed abundant cloud cover over the accident site at the time of the accident. The cloud cover was moving from west to east and had tops about 22,000 to 23,000 feet msl. An AIRMET in the area of the accident reported mountain obscuration conditions, and the reported freezing level was about 7,500 feet. When rescue personnel arrived at the scene several hours later, they found 8 to 10 inches of snow on the ground. The airplane's flightpath and the weather data are consistent with the flight encountering snow showers and possibly reduced visibility in the vicinity of the accident site. The airplane's flight track suggests that the pilot initially turned back when he encountered the deteriorating weather but decided to proceed toward his destination when the collision with mountainous terrain occurred. Examination of the airplane's airframe and engine found no evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation. Toxicological testing of specimens from the pilot detected medications that were unlikely to have posed a significant hazard to flight safety.
Probable Cause: The noninstrument-rated pilot's continued visual flight into instrument meteorological conditions, which resulted in controlled flight into mountainous terrain.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20120610X90234&key=1


Revision history:

Date/timeContributorUpdates
10-Jun-2012 13:25 gerard57 Added
10-Jun-2012 14:37 RobertMB Updated [Time, Aircraft type, Registration, Cn, Location, Source, Narrative]
13-Jun-2012 17:05 Geno Updated [Departure airport, Destination airport, Source]
22-Jun-2012 09:12 Geno Updated [Time, Departure airport, Destination airport, Source, Narrative]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 20:43 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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