NTSB Identification: DEN89FA001.
The docket is stored on NTSB microfiche number 37924.
Accident occurred Saturday, October 01, 1988 in EDEN, UT
Probable Cause Approval Date: 01/08/1990
Aircraft: CESSNA 152, registration: N48926
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.

BEFORE TAKEOFF, THE PLT TOLD RAMP PSNL THAT HE & HIS WIFE WERE PLANNING TO TAKE SOME PICTURES OF THE BEAUTIFUL FALL COLORS. A WITNESS NEAR THE CRASH SITE OBSERVED AN ACFT (MATCHING THE DESCRIPTION OF N48926) FLYING AT LOW ALTITUDE. SUBSEQUENTLY, THE ACFT CRASHED IN A BOX CANYON AREA WHERE STEEP TERRAIN PREVAILED ON BOTH SIDES & AHEAD OF THE ACFT. ELEVATION OF THE CRASH SITE WAS ABOUT 8000 FT. DENSITY ALTITUDE WAS ESTIMATED TO BE 10,400 FT. AN EXAM OF THE WRECKAGE REVEALED THE ACFT HAD CRASHED IN A STEEP NOSE DOWN ATTITUDE. NO EVIDENCE OF A PREIMPACT MECHANICAL PROBLEM WAS FOUND, EXCEPT ONE OF THE BOTTOM SPARK PLUGS CONTAINED ENOUGH LEAD DEPOSITS TO FILL THE GAP BTN THE CENTER POST (ELECTRODE) & ONE SIDE OF THE PLUG. CHORDWISE SCRAPES WERE FOUND ON THE PROP BLADES. ALSO, A 3 INCH LIMB WAS FOUND AT THE CRASH SITE WHICH HAD BEEN SLICED.

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:

PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND

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

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND

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

STALL..INADVERTENT..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

TERRAIN CONDITION..BLIND/BOX CANYON


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

IGNITION SYSTEM,SPARK PLUG..FOULED


Contributing Factors

LACK OF TOTAL EXPERIENCE..PILOT IN COMMAND

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