ASN Wikibase Occurrence # 45642
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| Date: | Monday 4 February 2002 |
| Time: | 10:42 |
| Type: |  Cessna U206G |
| Owner/operator: | Yute Air Alaska |
| Registration: | N756HL |
| MSN: | U20604103 |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 1051 hours |
| Engine model: | Continental IO-520-F |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Bethel , AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Bethel, AK (BET) |
| Chevak, AK (VAK) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The solo commerical pilot departed on a CFR 135 on-demand cargo/U.S. mail flight en route to a remote coastal village. The flight did not reach the destination. A search and rescue satellite received an ELT signal, and the wreckage was located about 80 miles from the departure airport, along the airplane's intended flight path. A pilot who departed about 25 minutes before the accident airplane, also en route to the same coastal village, characterized the weather conditions along the route as "low visibility with light snow squalls moving through the area." He added that flat light conditions made it very difficult to discern any topographic features. Another pilot who was transiting through the area in the opposite direction, about the time of the accident, characterized the weather conditions as overcast with ceilings ranging between 1,000 and 1,300 feet. As he approached the site where the wreckage was eventually discovered, he encountered momentary visibility restrictions due to fog and light snow. He added that flat light conditions made it very difficult to discern any topographic features among the featureless, snow-covered terrain. The pilot stated that he changed his route in order to avoid worsening weather conditions. The accident airplane was equipped with an avionics package provided by the FAA's Capstone Program. The Capstone Program is a joint industry/FAA demonstration program that includes global positioning system (GPS) avionics, weather and traffic information provided through automatic dependent surveillance-broadcast (ADS-B), and terrain information depicted on a multifunction display (MFD) installed in the cockpit. Terrain depiction information, based on GPS data, is one of several visual display options available to the pilot on the MFD. Damage to the accident airplane's MFD precluded a determination of the visual display option selected at the time of the accident. At the time of the accident, position information from ADS-B equipment in the airplane was being provided to the Air Route Traffic Control Center (ARTCC). The recorded ARTCC data were reviewed to determine the flight track of the accident airplane. The radar-like track depicted the accident airplane's takeoff from the departure airport, on a heading of approximately 300 degrees. While en route, the airplane climbed to an altitude of about 1,800 feet msl. As the track continued in a northwesterly direction and approached the accident site, a gradual descent was noted. The radar-like track stopped approximately 1.8 miles east of the accident site, with a ground speed of approximately 108 knots. Examination of the accident site revealed physical evidence indicating the airplane impacted the ground on a southeasterly heading (directly opposite of the on-course heading for the intended flight) in a slight nose down attitude. No evidence of any pre-impact anomalies with the engine or airplane were noted.
Probable Cause: The pilot's continued VFR flight into instrument meteorological conditions, and his failure to maintain adequate ground clearance, which resulted in an in flight collision with terrain. Factors associated with the accident were flat light conditions, and snow-covered terrain.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20020228X00285&key=1
History of this aircraft
Other occurrences involving this aircraft
| 3 June 1993 | N756HL | Six Mile Air, Inc. | 0 | Igiugig, AK | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Dec-2017 15:49 | ASN Update Bot | Updated [Departure airport, Source, Narrative] |
Corrections or additions? ... Edit this accident description
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