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| Date: | Saturday 26 February 2011 |
| Time: | 17:30 |
| Type: |  Lancair 360 Mk II |
| Owner/operator: | Private |
| Registration: | N989TT |
| MSN: | 728320571FB |
| Total airframe hrs: | 185 hours |
| Engine model: | Penn Yan Aero XE-360 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Approximately 7-miles West of the Milford Airport Utah -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Grand Junction, CO (KGJT) |
| Chandler, AZ (KCHD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot, who was not instrument rated, intended to fly to his destination while remaining in visual meteorological conditions (VMC). While en route, he entered an area where the clouds started to close in on him. Although the air traffic controller whom he was communicating with advised the pilot that there was an airport with VMC a short distance behind him, the pilot elected to attempt to proceed to his destination. As he continued, weather conditions became such that the pilot elected to land at an alternate airport. While being vectored to the alternate airport, the airplane's engine began to run rough, which, according to recorded engine analyzer data, was due to a restriction of the fuel flow in the orifice of the no. 1 cylinder injector nozzle. While attempting to deal with the rough running engine and maneuvering toward the alternate airport, the pilot inadvertently entered the clouds, and most likely lost control of the airplane due to spatial disorientation. The airplane then descended near vertically into the terrain. There was no record of the pilot receiving a weather briefing either from an FAA-contracted Flight Service Station or from either Direct User Access Terminal Service (DUATS) provider.
Probable Cause: The pilot's loss of control of the airplane due to spatial disorientation after inadvertently entering instrument meteorological conditions. Contributing to the accident were the pilot's inadequate preflight preparation, his en route decision-making, and his distraction due to a partial loss of engine power due to a restriction in a fuel injection nozzle.
Accident investigation:
 |
|
Sources:
NTSB
https://www.deseretnews.com/article/705367591/Pilot-found-dead-in-Milford-plane-crash.html?s_cid=rss-30
https://flightaware.com/live/flight/N989TT/history/20110226/2201Z/KGJT/KDXZ
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Feb-2011 04:49 | gerard57 | Added |
| 28-Feb-2011 07:45 | bizjets101 | Updated [Time, Aircraft type, Registration, Cn, Operator, Other fatalities, Location, Departure airport, Destination airport, Source, Damage, Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 16:43 | ASN Update Bot | Updated [Cn, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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