ASN Wikibase Occurrence # 38063
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| Date: | Thursday 26 January 1995 |
| Time: | 23:30 LT |
| Type: |  Beechcraft E18S |
| Owner/operator: | Methow Aviation Inc. |
| Registration: | N250RP |
| MSN: | BA-47 |
| Year of manufacture: | 1955 |
| Total airframe hrs: | 15043 hours |
| Engine model: | P&W R985-14B |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Butte, MT -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Seattle, WA (KBFI) |
| (KBTM) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE PERFORMING AN ILS APPROACH AT NIGHT AND IN IMC, THE AIRPLANE COLLIDED WITH TREES IN MOUNTAINOUS TERRAIN PRIOR TO THE IAF. THE MDA PRIOR TO THE IAF IS 10,600 FEET. THE DESCENT ALTITUDE AT THE OM IS 7,713 FEET. THE WRECKAGE WAS LOCATED UNDER THE LOCALIZER PATH AT AN ELEVATION OF 7,600 FEET. DAMAGE TO TREE TOPS ALONG THE WRECKAGE DISTRIBUTION PATH INDICATES THAT THE AIRPLANE TRAVELLED THROUGH THE TREES ON A LEVEL PLANE UNTIL CONTACT WITH THE GROUND APPROXIMATELY 300 FEET INTO THE PATH. LIGHT SNOW WAS FALLING AT THE TIME OF THE ACCIDENT AND VISIBILITY WAS DETERIORATING DUE TO FOG. DURING THE POST CRASH INVESTIGATION, THERE WAS NO EVIDENCE FOUND TO INDICATE A MECHANICAL FAILURE OR MALFUNCTION.
Probable Cause: THE PILOT'S FAILURE TO FOLLOW THE IFR PROCEDURE BY NOT MAINTAINING THE PROPER ALTITUDE PRIOR TO THE INITIAL APPRAOCH FIX. FACTORS TO THE ACCIDENT WERE DARK NIGHT CONDITIONS AND A LOW CEILING.
Accident investigation:
 |
|
Sources:
NTSB SEA95FA043
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 16:49 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Accident report] |
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