A C402 SKYDIVING COMMERCIAL PLT LOSES AN ENG WHILE ENTERING A 45 DEG ENTRY TO TFC PATTERN AT HDH; HI.

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ON DEC/XA/99; I CONDUCTED A NORMAL PREFLT AT HNL IN A C402. I HAD THE TIP TANKS TOPPED OFF. I CHKED ALL FUEL SUMPS WITH NO NOTABLE WATER AND DID NOT NOTICE ANY PROBS DURING RUNUP OR WHILE FLYING THE ACFT FROM HNL TO DILLINGHAM ARPT. AT DILLINGHAM ARPT; I WAS CONDUCTING SKYDIVE OPS. AFTER MY SECOND SKYDIVE DROP OF THE DAY; I DSNDED AND WAS THE SOLE OCCUPANT IN THE ACFT AT THIS TIME. AFTER REACHING APPROX 3000 FT INDICATED ALT; I ENTERED ON THE 45 DEG TO DOWNWIND FOR RWY 8 AT DILLINGHAM ARPT; WHEN THE L ENG LOST PWR. AFTER CONDUCTING THE EMER CHKLIST PROCS AND BEING UNABLE TO RESTART IT; I SHUT DOWN AND SECURED THE L ENG. I INFORMED DILLINGHAM UNICOM THAT I WAS OPERATING ON A SINGLE ENG AND TO KEEP ANY TFC ADVISED. I DID NOT DECLARE AN EMER AS I HAD PLENTY OF ALT AND MY R ENG WAS RUNNING NORMAL. I MADE AN UNEVENTFUL APCH AND LNDG WITHOUT ANY OTHER PROBS. AFTER LNDG; I VISUALLY INSPECTED THE L ENG AND DID NOT NOTICE ANY ANOMALIES; BUT DID DRAIN A SMALL AMOUNT OF WATER FROM THE L WINGTIP TANK SUMP. I STARTED THE L ENG AND IT RAN ROUGH. I THEN CONTACTED MY EMPLOYER WHO DISPATCHED HIS MECH. AFTER MEETING WITH THE MECH AT DILLINGHAM ARPT AND DISCUSSING THE PROB; HE STATED HE WOULD INSPECT THE ENG LATER IN THE DAY. I AGAIN MET WITH THE MECH WHO STATED THAT HE WORKED ON; STARTED; AND RAN THE L ENG. HE SAID THAT IT WAS RUNNING NORMAL AND STATED THAT IT WAS AIRWORTHY TO FLY BACK TO HNL ARPT. I WAS NOT AWARE AT THAT TIME WHETHER AN ENTRY HAD BEEN MADE IN THE ACFT LOGBOOKS THAT THE ACFT WAS AIRWORTHY BEFORE FLT; AS I WAS GIVEN THIS INFO VERBALLY BY THE MECH. I BELIEVED THAT IT WAS THE EMPLOYER'S RESPONSIBILITY TO VERIFY AN ENTRY BE MADE IN THE ACFT LOGBOOKS. I ALSO BELIEVED AT THAT TIME THAT EITHER THE MECH HAD THE LOGBOOKS AND HAD (OR WOULD) MAKE THE PROPER ENTRIES; ALTHOUGH I DID NOT SEE THEM. I HAVE SINCE BEEN REASSURED BY MY EMPLOYER THAT THE LOGBOOKS WERE PROPERLY SIGNED BY THE MECH. I CONDUCTED ANOTHER PREFLT; DRAINED ALL FUEL SUMPS; STARTED THE ACFT; DID A NORMAL RUNUP; AND DID NOT NOTICE ANY ROUGHNESS OR ABNORMALITY. AT THIS TIME; I DEPARTED ALONE FROM DILLINGHAM ARPT AND FLEW IN PROX OF DILLINGHAM ARPT AS A PRECAUTION FOR APPROX 30 MINS. NO ABNORMALITIES WERE NOTED; SO I FLEW THE ACFT BACK TO HNL. I BELIEVE THE PROB WAS CAUSED BY WATER IN THE FUEL SYS AND ONLY MANIFESTED ITSELF ON DSCNT. I BELIEVE THE REPETITIOUS ASCENT/DSCNT GENERATED THE WATER THAT CAUSED MY L ENG TO QUIT. I THINK THAT DRAINING ALL SUMPS AFTER EACH SKYDIVE DROP WILL ALLEVIATE THE AMOUNT OF WATER IN THE TANKS DUE TO CONDENSATION; SLOSHING; ETC. ADDITIONALLY; IN THE FUTURE I WILL PERSONALLY VERIFY THAT THE ACFT LOGBOOKS HAVE BEEN SIGNED OFF BEFORE FLT AND NOT TAKE VERBAL APPROVAL OR ASSUME THAT SUCH HAS BEEN DONE.