NTSB Identification: SEA83FA057
14 CFR Part 91: General Aviation
Accident occurred Saturday, November 20, 1982 in SODA SPRINGS, ID
Probable Cause Approval Date: 11/20/1983
Aircraft: CESSNA TU206G, registration: N4606U
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.

A SEARCH FOR THE AIRCRAFT WAS BEGUN AFTER THE PILOT'S RELATIVES REPORTED IT WAS OVERDUE AND RESIDENTS NEAR THE CRASH SITE HEARD THE SOUNDS OF A LOW FLYING PLANE SUDDENLY TERMINATE. UNOFFICIAL REPORTS OF THE WEATHER INDICATED IT WAS ABOUT 200 FT OBSCURED, 1/4 MI VISIBILITY WITH HEAVY SNOW, TEMP 30 DEG, WIND 200 DEG AT 5 KTS. THE AIRCRAFT WAS FOUND IN FEBRUARY 1983 BY A CROSS-COUNTRY SKIER. AN INVESTIGATION REVEALED IT HAD CRASHED AT HIGH SPEED IN A NEAR VERTICAL DIVE. THE NON-INSTRUMENT RATED PILOT HAD NOT FILED A FLIGHT PLAN AND NO RECORD OF A WEATHER BRIEFING WAS FOUND. THERE WERE NO COMMUNICATIONS WITH THE PILOT AFTER HE DEPARTED THE SALT LAKE CITY AREA. HE HAD BEEN ASSIGNED A DISCRETE TRANSPONDER CODE DURING DEPARTURE AND HAD NOT CHANGED THE CODE, THUS A RADAR TRACK WAS OBTAINED. THE RADAR SHOWED A CONTINUOUS TRACK TO THE AREA OF THE ACCIDENT, THEN WAS INTERMITTENTLY LOST AND REMAINED IN "BOBS AND WEAVES" UNTIL IT DISAPPEARED. NO PREIMPACT/MECHANICAL MALFUNCTION OR FAILURES WERE FOUND.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VFR FLIGHT INTO IMC..CONTINUED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

SPATIAL DISORIENTATION..PILOT IN COMMAND


Contributing Factors

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND


Contributing Factors

PREFLIGHT BRIEFING SERVICE..NOT OBTAINED..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..LOW CEILING


Contributing Factors

WEATHER CONDITION..SNOW


Contributing Factors

WEATHER CONDITION..OBSCURATION


Contributing Factors

LIGHT CONDITION..DARK NIGHT


Contributing Factors

LACK OF TOTAL INSTRUMENT TIME..PILOT IN COMMAND

Index for Nov1982 | Index of months