FO OF AN ACR DH8 RETURN LAND; AND AN EMER DECLARED AFTER HIGH ENG OIL TEMP CAUSED AN INFLT ENG SHUTDOWN OF THE #1 ENG; WHEN HE DID NOT HAVE AT LEAST 100 HRS AS SIC IN TYPE OF ACFT PER COMPANY FLT OPS MANUAL.

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ON CLBOUT OUT OF BOSTON; DURING CLB CHKS; CHKED ENG INSTS PER THE CHKLIST. THE #1 ENG OIL TEMP WAS EXCEEDING THE UPPER LIMIT (135 DEGS C). WE SHUT DOWN THE #1 ENG PER THE APPROPRIATE EMER CHKLISTS. WE RETURNED TO BOSTON AND LANDED UNEVENTFULLY. UPON REVIEW; WE REALIZED THAT WE HAD LET THE FO CONTINUE TO BE THE PF SINCE IT WAS HIS LEG; AND HE LANDED THE ACFT. THE PROB WAS HE HAS UNDER 100 HRS AS A SIC IN TYPE; AND PER OUR FLT OPS MANUAL; THE PIC SHOULD MAKE THE LNDG. EXTENUATING CIRCUMSTANCES: STRICTLY FOLLOWING THE 3 CHKLISTS INVOLVED; AND READING THE NOTES OF ALL CHKLISTS; I FALSELY BELIEVED I HAD COVERED EVERYTHING NECESSARY TO LAND SAFELY. THE CHKLISTS MAKE NO REF TO THIS ISSUE. THE FO DID A GOOD JOB OF FLYING THE ACFT DURING THE EMER; SO I DIDN'T SUSPECT THAT I HAD TO INTERVENE. THE AUTOPLT WAS MEL'ED INOP; SO IT HAD ACTUALLY WORKED TO OUR BENEFIT TO HAVE THE FO FLY THE INITIAL SHUTDOWN AND POSITIONING OF THE ACFT FOR THE APCH. SO I; AS THE CAPT; COULD BE THINKING OF ALL THE ISSUES INVOLVED. BUT AGAIN; NEVER THOUGHT OF THE 100 HR SIC REQUIREMENT. I GUESS I LOST THE BIG PICTURE WITH FORGETTING THE 100 SIC RULE. THERE WERE TSTMS IN THE AREA; SO WE HAD ONE MORE DISTR TO DEAL WITH; TOO.