SCHEDULE CARGO FLT UNABLE START R ENG. FBO MECH FOUND PROB WITH THE STARTER GENERATOR. WAS ABLE TO GET THE ENG STARTED BUT THE GENERATOR WAS NOT WORKING PROPERLY. COMPANY WANTED ACFT IN YIP ASAP. FLEW TO YIP AND FAILED TO NOTE MECH HAD WRITTEN THE ACFT UP AS NOT AIRWORTHY. THEN THE CAPT DID NOT WRITE THE PROB IN THE LOGBOOK. FOURTH ALL NIGHTER; FATIGUE A FACTOR.

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ON DROPPING OFF CARGO IN ROC AND REFUELING; THE R STARTER FAIL TO ENGAGED THE ENG. ON TAXIING THE ACFT OVER TO FBO; THE MECH FOUND A PROB WITH THE STARTER GENERATOR. MY COMPANY WANTED TO GET THE ACFT BACK TO YIP ASAP. THE MECH MANAGED TO GET THE STARTER TO WORK; BUT THE GENERATOR DIDN'T WORK CORRECTLY AT FIRST; BUT WORKED BETTER AS IT RAN. THE MECH STATED TO THE DIRECTOR OF MAINT FOR MY COMPANY THAT THE ACFT NEEDED A NEW STARTER GENERATOR. I FORGOT TO LIST THE DISCREPANCY IN THE LOGBOOK; MOSTLY DUE TO THIS BEING THE THIRD ALL-NIGHTER IN 4 NIGHTS. I ALSO WAS VERY CONCERNED WITH THE WX -- A LINE OF LEVEL 5 TSTMS HAD MOVED INTO THE AREA AND STOPPED MY DEP. ON FINALLY GETTING BACK TO YIP I READ THE BILL FROM THE FBO. THE MECH HAD STATED THE ACFT WAS NOT APPROVED FOR RETURN TO SVC. I HAD FLOWN THE ACFT FROM ROC-YIP WITH THAT WRITE- UP. I BELIEVE PART OF THE PROB IS WITH THE FLT HRS THAT ARE ALL WITH SUPPLEMENTAL/135 AND MY COMPANY POOR GND SCHOOL AS NO INFO IN REGARDS TO WRITING UP DISCREPANCY AND FINDING MY FO HAD NOT BEEN TRAINED TO DO A WT AND BAL AND HAD NOT HAVING LANDED THE ACFT DURING HIS FLT TRAINING POSSIBLY LED TO MY DISTR WITH THE PAPERWORK.