NTSB Identification: SEA95FA043.
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Nonscheduled 14 CFR
Accident occurred Thursday, January 26, 1995 in BUTTE, MT
Probable Cause Approval Date: 09/24/1995
Aircraft: BEECH E18S, registration: N250RP
Injuries: 1 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.
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.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: 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. Full narrative available
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