ASN Wikibase Occurrence # 13522
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| Date: | Sunday 22 September 1974 |
| Time: | 0:38 LT |
| Type: |  Piper PA-30-160 Twin Comanche |
| Owner/operator: | Bryan Everald Unke |
| Registration: | N8307Y |
| MSN: | 30-1446 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | near Belle Fourche, Butte County, South Dakota -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | St. Thomas Municipal Airport, North Dakota (FAA LID: 4S5) |
| South Lake Tahoe, California (TVL/KTVL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Written off (destroyed) September 22, 1974 when crashed at night near Belle Fourche, Butte County, South Dakota (at approximate co ordinates 44°40′3″N 103°51′1″W): cause of accident attributed to a CFIT (Controlled Flight Into Terrain). The pilot's blood alcohol level was 165 mg%.
Aircraft struck ground in a slight nose down left wing low attitude. Aircraft was en route between St. Thomas Municipal Airport, North Dakota (FAA LID; 4S5) and South Lake Tahoe, California (TVL/KTVL). Both persons on board (pilot and one passenger) were killed. According to the following excerpt from the official NTSB report into the accident:
"PROBABLE CAUSE(S)
PILOT IN COMMAND - MISJUDGED ALTITUDE AND CLEARANCE - PHYSICAL IMPAIRMENT - ALCOHOLIC IMPAIRMENT OF EFFICIENCY AND JUDGMENT
FACTOR(S)
MISCELLANEOUS ACTS,CONDITIONS - PILOT FATIGUE"
One of the two fatalities was named as Bryan Everald Unke (see link #4) but it is not clear if he was the pilot or the passenger.
Accident investigation:
|
Sources:
1. NTSB Identification: MKC75AK022 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=39074&key=0
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=8307Y
3. http://planecrashmap.com/plane/sd/N8307Y/
4. https://www.findagrave.com/memorial/45340233
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Feb-2008 12:00 | ASN archive | Added |
| 05-Feb-2017 17:35 | Dr.John Smith | Updated [Time, Aircraft type, Operator, Location, Phase, Nature, Departure airport, Destination airport, Source, Narrative] |
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