AN EXPERIENCED GA PLT; FLYING A CESSNA T210 EXPERIENCED A LOSS OF PWR AND MADE AN EMER LNDG AT CRQ.

Narrative

ACFT WAS ON A FLT FROM FORTUNA ARPT; CA; TO MONTGOMERY FIELD; CA. PLT DEPARTED AT XA00 AND THE ETA AT MYF IN SAN DIEGO WAS XE00. PLT WAS ROUTINELY SWITCHING BTWN THE L AND R FUEL TANKS EVERY 30 MINS. AT APPROX 5-6 NM W OF CRQ ARPT; CA; THE ENG BEGAN SURGING AND LOSING PWR. THE ACFT WAS IN CRUISE FLT AND THE PLT IMMEDIATELY FOLLOWED ENG-OUT PROCS FOR CRUISE FLT AS PER THE CESSNA T210 OPERATING MANUAL. AFTER NOT BEING ABLE TO REGAIN FULL PWR THE PLT DECIDED THE BEST COURSE OF ACTION WAS TO MAKE AN EMER LNDG AT CRQ ARPT. THE PLT DECIDED TO KEEP THE ACFT LIGHT ON ONCE A SAFE LNDG WAS ASSURED. A SAFE; UNEVENTFUL LNDG WAS MADE AND THE ENG PWR AND MIXTURE WERE CUT OFF DURING LNDG ROLLOUT. THE ACFT COASTED SAFELY OFF THE RWY AND ONTO THE PARALLEL TXWY. THE PLT REQUESTED IT BE TOWED TO PARKING. THE ACFT WAS DETERMINED TO HAVE 450.3 LBS OF FUEL AVAILABLE FOR FLT AT FORTUNA ARPT; CA; AFTER SUBTRACTING 16.0 LBS FOR TAXI AND TKOF. IT WAS DETERMINED; DURING PREFLT PLANNING; THAT IT WOULD TAKE 383.9 LBS FOR AN ALMOST DIRECT FLT TO MONTGOMERY FIELD; SAN DIEGO; CA; AT 11000 FT CRUISE ALT. THE FUEL REMAINING WAS TO BE 66.4 LBS UPON ARR AT MYF ARPT. THIS ALLOWED FOR THE 45 MIN RESERVE FOR VFR NIGHT FLT. THE WINDS ALOFT FOR THE RTE OF FLT VARIED BTWN 310 DEGS AND 030 DEGS. THE ACFT HAD A TAILWIND THE ENTIRE FLT AND THE AVERAGE GND SPD WAS 170 KTS. THE PLT REFUELED THE ACFT AT CRQ ARPT AFTER A 1 HR REST PERIOD. THE PLT THEN RAN THE ENG FOR 20 MINS TO NORMALIZE THE FUEL INJECTION SYS. THE PLT DETERMINED THE ACFT TO BE AIRWORTHY AND CONTINUED THE FLT TO MONTGOMERY FIELD; SAN DIEGO. THE PLT SUSPECTS A POSSIBLE FLOODED ENG CONDITION DEVELOPED DURING EMER PROC.