NTSB Identification: DEN88FA071.
The docket is stored on NTSB microfiche number 35696.
Accident occurred Sunday, February 07, 1988 in RED LODGE, MT
Probable Cause Approval Date: 04/25/1989
Aircraft: CESSNA 172M, registration: N20484
Injuries: 3 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 PLT AND TWO PAX WERE RETURNING TO TWIN FALLS, ID FROM BILLINGS, MT. THE PLT REC TWO WX BRIEFINGS PRIOR TO DEP. THE WX FORECAST INDICATED LOW CLOUDS, SNOW, TURB AND ICING COND ALONG THE INTENDED ROUTE OF FLIGHT. THE ROUTE OF FLIGHT REQUIRED THE PLT TO TRAVERSE HIGH MTN TERRAIN. THE PLT RADIOED HE WAS ENCOUNTERING CLOUDS NEAR THE MTNS. THE ACC SITE ELEV WAS 10,000 FT. THERE WAS NO EVIDENCE OF A MECH MALFUNCTION OR FAILURE OF THE ACFT STRUCTURE, FLT CONTROLS, ENG OR PROP. THE FSS HAD FORECAST THE MOUNTAINS TO BE OBSCURED BY CLOUDS AND THE WX TO INCLUDE SNOW AND TURBULENCE.

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

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

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

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


Contributing Factors

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


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

WEATHER CONDITION..LOW CEILING


Contributing Factors

WEATHER CONDITION..SNOW


Contributing Factors

WEATHER CONDITION..TURBULENCE

Index for Feb1988 | Index of months