NTSB Identification: DEN89FA034.
The docket is stored on NTSB microfiche number 38345.
Accident occurred Wednesday, November 16, 1988 in TOOELE, UT
Probable Cause Approval Date: 11/24/1989
Aircraft: CESSNA 421, registration: N222BL
Injuries: 2 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.

THE FLT DEPARTED ST. GEORGE, UT, AT 0100 MST ENROUTE TO SALT LAKE CITY (SLC). A FLT PLAN WAS NOT FILED. THE WX FORECAST WAS FOR IMC WITH MOUNTAIN TOPS OBSCURED. THE PLT REQUESTED FLT FOLLOWING FROM SLC CENTER AND PROCEEDED ON THE AIRWAYS UNTIL ABOUT 40 MI S OF SLC WHERE RADAR CONTACT WAS LOST. UPON LOSS OF RADAR CONTACT, THE CONTROLLER ASKED THE PLT WHAT HIS ALT WAS. THE PLT REPLIED THAT HE WAS AT 10,500 FT. THAT WAS THE LAST CONTACT WITH THE FLT. AFTER REPEATED ATTEMPTS TO REESTABLISH CONTACT, IT WAS DETERMINED THAT THE ACFT HAD GONE DOWN. A SEARCH WAS BEGUN AND THE WRECKAGE WAS FOUND 30 MI SW OF SLC AT THE 9500 FT LEVEL OF A MOUNTAIN.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

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

BECAME LOST/DISORIENTED..INADVERTENT..PILOT IN COMMAND

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

PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND

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

FLIGHT INTO KNOWN ADVERSE WEATHER..ATTEMPTED..PILOT IN COMMAND


Contributing Factors

LIGHT CONDITION..DARK NIGHT


Contributing Factors

WEATHER CONDITION..SNOW


Contributing Factors

WEATHER CONDITION..LOW CEILING


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY

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