NTSB Identification: LAX87FA156.
The docket is stored on NTSB microfiche number 36776.
Accident occurred Wednesday, March 25, 1987 in HALF MOON BAY, CA
Probable Cause Approval Date: 06/07/1989
Aircraft: CESSNA 310Q, registration: N7603Q
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 FLYING NORTHWEST OVER WATER ALONG THE PACIFIC COAST ON AN IFR CLNC, THE PLT RPRTD TO THE SECTOR CONTROLLER (CTLR) 'WE'VE GOT A PROBLEM.' THE CTLR INQUIRED ABOUT THE NATURE OF THE PROBLEM. THE PLT THEN STATED, 'GOING DOWN FAST, OUT OF CONTROL.' THE CTLR OBSERVED THAT THE ACFT WAS LOSING ALT RAPIDLY & INSTRUCTED THE PLT TO TURN RIGHT TO 090 DEG FOR VECTORS TOWARD THE SHORELINE; THE PLT RESPONDED, 'WE'RE GOING IN.' NO FURTHER TRANSMISSIONS WERE RECEIVED FROM THE PLT. THE CTLR NOTED THE ACFT'S TRANSPONDER CODE WENT INTO A COAST MODE & THE PRIMARY TARGET WENT INTO A SLOW LEFT TURN. RADAR CONTACT WAS LOST WITH THE ACFT AFTER IT HAD TURNED TO A SOUTHWESTERLY HEADING. COAST GUARD HELICOPTERS ARRIVED OVER THE AREA OF THE ACDNT AT ABOUT 1700 PST. THE HELICOPTER AIRCREWS FOUND AN OIL SLICK, A LNDG GEAR & OTHER REMNANTS OF THE ACFT; HOWEVER, THE MAJOR PORTION OF THE ACFT SANK & WAS NOT RECOVERED.

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

REASON FOR OCCURRENCE UNDETERMINED

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