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ASN Wikibase Occurrence # 122851
Last updated: 25 April 2019
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Date:28-MAY-2011
Time:18:00
Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna R172K Hawk XP
Owner/operator:Private
Registration: N9831V
C/n / msn: R1722351
Fatalities:Fatalities: 3 / Occupants: 3
Aircraft damage: Substantial
Category:Accident
Location:22 miles northwest of Reno, NV -   United States of America
Phase: En route
Nature:Private
Departure airport:Roseburg, OR (RBG)
Destination airport:Reno, NV (RNO)
Investigating agency: NTSB
Narrative:
The pilot, who held an instrument rating, was flying the airplane for the owner, who did not hold an instrument rating, from the departure airport, where instrument meteorological conditions (IMC) prevailed, to another airport, where visual meteorological conditions prevailed. Forecast weather conditions along the route of flight called for areas of mountain obscuration and precipitation, including snow. The pilot filed an instrument flight rules (IFR) flight plan, and he was issued an IFR clearance. About 44 minutes into the flight, the pilot canceled the IFR clearance and continued the flight under visual flight rules (VFR). About 16 minutes later, the pilot amended the flightís destination to an airport that was along the route of flight, but closer than the original destination, and about 19 minutes after that, the air traffic controller told the pilot that radar service was terminated. About 1.5 hours after radar service was terminated, the airplane impacted mountainous terrain at an elevation of about 6,400 feet mean sea level (msl). The wreckage was confined to the impact area, and the damage was consistent with controlled flight into terrain. The accident site was located along the route of flight beyond the amended destination and about 20 miles short of the original destination, indicating that the pilot had over flown the amended destination and may have been attempting to reach the original destination. About 30 minutes before the accident, light rain and mountain top obscuration were reported in the vicinity of the original destination airport. At the time of the accident, the original destination airport was reporting cloud layers with bases about 6,300 and 6,800 feet msl. Given the forecast and reported weather conditions, it is likely that the pilot encountered IMC and was unable to see the terrain prior to the airplane colliding with it.

The toxicology report for the pilot showed positive results for amphetamine, methamphetamine, and trimethoprim, an antibiotic used to treat infections. However, it could not be determined from available samples when the amphetamine and methamphetamine had been ingested, and, therefore, whether they would have impaired the pilotís performance. Review of the pilot's medical records indicated that he had diabetes, and, one day prior to the accident, he had been treated for a skin infection. It is possible that the pilot was distracted by his medical condition and that this may have impaired his performance and contributed to his decision to continue the VFR flight into deteriorating weather conditions.
Probable Cause: The pilot's continued visual flight rules flight into instrument meteorological conditions, which resulted in a controlled collision with terrain.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20110531X35220&key=1


Revision history:

Date/timeContributorUpdates
01-Jun-2011 00:42 gerard57 Added
01-Jun-2011 01:21 RobertMB Updated [Date, Other fatalities, Departure airport, Destination airport]
01-Jun-2011 18:38 RobertMB Updated [Time, Aircraft type, Registration, Cn, Operator, Source]
28-May-2012 20:06 Geno Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 16:54 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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