NTSB Identification: LAX86FA063.
The docket is stored on NTSB microfiche number 33351.
Accident occurred Monday, December 09, 1985 in INDEPENDENCE, CA
Aircraft: CESSNA TR182, registration: N737SG
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.

WHILE EN ROUTE, THE ACFT COLLIDED WITH MOUTAINOUS TERRAIN (TRRN) AT AN APRX ELEV OF 13,500 FT. PREVIOUSLY, THE PLT HAD REQUESTED & WAS RCVG TRAFFIC ADVISORIES FM ARTCC. BFR THE ACDNT, THE ACFT'S PSN & ALT (MODE C REPLY) WERE NOTED BY THE CONTROLLER (CTLR). NO TRRN/OBSTN ALERT WAS ISSUED; HOWEVER, AT THAT TIME, THE FLT WAS OPERATING UNDER VISUAL FLIGHT RULES. ALSO, IT WAS NEAR A ROUTE OFTEN USED BY VFR ACFT TO CROSS OVER THE MTNS, SO NO SAFETY ALERT WAS REQUIRED (ALTHO AFTER THE ACDNT, OAKLAND ARTCC BEGAN PROVIDING TRRN/OBSTN ALERTS TO VFR ACFT AS AN ADNL SERVICE). THE ACFT CRASHED INTO 32 DEG UPSLOPING TRRN BELOW MT KEITH (ELEV 13,976 FT), APRX 8 MI NNW OF MT WHITNEY. ON THE LATEST SECTIONAL CHART, THERE WAS A NOTE (APRX 1/2 INCH FM THE CRASH LOCATION) WHICH STATED 'CAUTION - RAPIDLY RISING TERRAIN.' ALSO, THE CHART HAD 2 MAX ELEV FIGURES WHICH SHOWED THAT NEARBY TRRN ROSE ABOVE 14,000 FT.

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

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


Contributing Factors

LIGHT CONDITION..DARK NIGHT



Contributing Factors

VISUAL/AURAL DETECTION..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

TERRAIN CONDITION..HIGH TERRAIN



Contributing Factors

TERRAIN CONDITION..RISING

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