FO OF A B727 OVERSHOT INITIAL APCH ALT ON DSCNT AND THEN FLEW THROUGH THE LOC COURSE AFTER RECEIVING A VECTOR FOR INTERCEPTION. SUBSEQUENTLY; THE CAPT TOOK OVER THE CTLS AFTER THE FO OVERSHOT THE INITIAL APCH ALT TO WHICH HE WAS RETURNING.

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OUR FLT STARTED FROM DEN AND CONTINUED TO KIND. I WAS THE PNF AND HAD ELECTED TO LET MY FO FLY THE LEG AS THE DEP WX OUT OF DEN WAS GOOD. WE HAD 2 JUMP SEATERS ON THE FLT; 1 COMPANY ACM DEADHEADING TO ANOTHER CREW ASSIGNMENT IN IND; AND 1 FROM ANOTHER AIRLINE WHOM WE HAVE A RECIPROCAL AGREEMENT WITH. EVERYTHING WAS NORMAL ENRTE. MY FO BRIEFED ME THAT HE HAD NOT FLOWN FOR 6 WKS PRIOR TO THE FLT. I HAD RIDDEN THE L SEAT FOR HIM DURING HIS FO UPGRADE CHKOUT IN THE SIMULATOR AND ALTHOUGH I KNEW HE WAS A RELATIVELY LOW TIME PLT UPGRADING FROM FE TO FO; I WAS IMPRESSED BY HIS SKILLS DURING THE CHK RIDE. IN ANY EVENT; WE WERE ISSUED A CLRNC TO CROSS 30 MI W OF BRICKYARD AT AND MAINTAIN 11000 FT AND ALTHOUGH HE STARTED DOWN IN TIME TO MAKE IT; HE BECAME DISTR PULLING HIS PLATES OUT FOR RWY 2 AND RWY 5L AT KIND. THE DSCNT SHALLOWED OUT AND WE WERE NOW BEHIND THE PROFILE; SO I EXTENDED THE SPD BRAKES AND MADE A CONCERTED EFFORT TO MAKE THE XING RESTR; WHICH WE DID. I GAVE HIM BACK THE AIRPLANE AND WE WERE NOW ON DOWNWIND ON A VECTOR TO RWY 5L IN WX WHICH HAD DETERIORATED SINCE THE TOP OF DSCNT. HE BRIEFED THE NEW APCH; AND WE WERE GIVEN A VECTOR TO INTERCEPT WHICH HE DID NOT EXECUTE IN A TIMELY FASHION; AND DUE TO THIS PLUS WIND; WE SHOT THROUGH THE LOC. I WAS NOW COMMANDING HIM TO GET ON THE LOC; BUT HE STEEPENED THE BANK ANGLE TO 45 DEGS; AT WHICH TIME I CALLED 'BANK ANGLE' AND HE STARTED A HIGH SINK RATE APCHING 300 FT ASSIGNED ALT AND I CALLED 'MY AIRPLANE' AND LEVELED OFF FOR HIM AND ASSISTED HIM BACK ONTO THE LOC. WE WERE APPROX 150 FT BELOW 3000 FT WHEN I TOOK OVER FOR HIM. I HANDED HIM THE ACFT BACK ONE LAST TIME; BUT HE EXCEEDED 3000 FT AND CAUSED A SLIGHT OVERSHOOT; SO I TOOK OVER THE PF DUTIES AND LANDED NORMALLY. I BELIEVE THAT I HAD TOO MUCH CONFIDENCE IN THIS PLT'S SKILLS AND WAS LULLED INTO COMPLACENCY BY HAVING SEEN HIS GOOD PERFORMANCE IN THE SIMULATOR.