NTSB Identification: SEA04FA032.
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Accident occurred Thursday, January 01, 2004 in Glasgow, MT
Probable Cause Approval Date: 01/24/2005
Aircraft: Cessna 182G, registration: N3171S
Injuries: 4 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

The pilot and three passengers were completing the final leg of a round robin cross-country flight that originated earlier in the day. Approximately 2 hours 30 minutes into the final leg of the cross-country flight, the pilot received an in-flight weather update for the route of flight. The weather specialist reported low ceilings and low visibilities along the intended route. Additionally, the specialist reported that VFR flights were not recommended due to an AIRMET for IFR conditions, icing conditions and areas of mountain obscuration. Subsequent to receiving the updated weather information, the pilot reported that he was diverting to and alternate airport northwest of his location. After failing to arrive at the planned destination, an ALNOT was issued for the missing airplane. The airplane wreckage was later located southeast of the intended alternate. Infrared weather satellite imagery showed areas of enhanced widespread cloud cover and cloud tops northwest of the accident location on the night of the accident. Dark night conditions prevailed at the time of the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

Loss of aircraft control resulting in an in-flight collision with terrain. Factors include marginal weather and dark night conditions.

Full narrative available

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