B737-300 CREW SLOWED WITHOUT THE APCH CTLR'S CONCURRENCE. DURING A DISCUSSION OF THE EVENT WITH THE CTLR THE CREW HAD AN ALT OVERSHOOT.

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I WAS HAND FLYING AFTER PASSING TOMSN INTXN ON THE ARR. WE WERE GIVEN A 060 DEG HDG. ONCE WE APCHED WITHIN APPROX 3 MI FROM THE FINAL APCH COURSE; I SLOWED TO 220 KTS; THEN SLOWED TO 200 KTS. THE APCH CTLR ASKED WHAT OUR SPD WAS AND WE RESPONDED 200 KTS. AT THAT POINT; HE BECAME VERY AGITATED AND SAID 'I TOLD YOU TO HOLD 250 KTS; INCREASE TO 250 KTS NOW.' THEN HE CONTINUED TO ADMONISH US FOR THE NEXT 30 SECONDS. WE HAD NO SPD RESTR AT TOMSN. I FELT THAT I WAS ON A MODIFIED BASE AND THAT I WAS A BIT HIGH AND FAST -- THAT WAS THE REASON FOR SLOWING. WE WERE CLRED TO 13000 FT AND WHEN ALL OF THIS STARTED (IE; THE CTLR'S ADMONISHMENT); AS WE WERE COMING UP ON 14000 FT AND DSNDING AT ABOUT 1200 FPM; I ADDRESSED THE ISSUE OF THE SPD WITH THE CTLR AND EXPLAINED THAT I FELT I NEEDED TO SLOW TO BE STABLE ON THE APCH. THE CTLR'S VOICE OVERRODE THE ALT ALERT HORN FROM WHAT WE CAN FIGURE; BECAUSE NEITHER OF US RECALLED HEARING IT. BY THE TIME WE REALIZED WHAT HAD HAPPENED; WE WERE AT 12400 FT. AT THAT POINT; THE FO SAID WE WERE ONLY CLRED TO 13000 FT AND WE CLBED BACK UP TO 13000 FT. HUMAN FACTORS INVOLVED: HIGH TIME MONTH FOR THE CAPT AND HIS LAST TRIP OF THE MONTH; 93.53 HR CREDIT MONTH. 2 14-HR DAYS ON THE LAST 2 IDENTS WHICH THE CAPT WAIVED. THE LAST 14 HR DAY WITH A MINIMUM REST AT THE HOTEL. THE LAYOVER THE NIGHT PRIOR TO THE INCIDENT WAS 13 HR DUTY DAY WITH A 9 HR MINIMUM LAYOVER AT THE HOTEL. THE CTLR PICKED A VERY INOPPORTUNE TIME TO START HIS LECTURE FOR 30 SECONDS. APCH CTLRS ARE ASKING US TO FLY FASTER TO A SHORTER DISTANCE FROM THE ARPT. THIS MIGHT HAVE WORKED WHEN PLTS ONLY FLEW 60 HARD HRS A MONTH; BUT IT WON'T WORK NOW. IF YOU CONTINUE TO HAVE PLTS FLY OR MAKE PLTS FLY TO MAKE UP FINANCIAL LOSSES; 85-95 HARD HRS A MONTH; PLUS HAVING A 12-14+ HR DUTY DAY; THEN THE ACR IS TOYING WITH A DISASTER. I HAVE NEVER WRITTEN A RPT UNTIL THE LAST 2 MONTHS; AND I HAVE WRITTEN 3. I CALLED TRACON UPON ARR AND SPOKE TO SUPVR AND EXPLAINED THE SIT TO HIM. HE ASSURED ME THAT NOTHING WAS WRITTEN UP; NO ALARMS WERE RUNG AND THAT HE WOULD SPEAK WITH THE CTLR AND EXPLAIN THAT IT IS INAPPROPRIATE TO 'DRESS DOWN' A PLT FOR THAT LENGTH OF TIME WHILE THEY ARE FLYING IN THE APCH ENVIRONMENT. I TAKE FULL RESPONSIBILITY FOR THE ENTIRE SIT FOR NOT ADVISING THE CTLR THAT I WAS GOING TOO SLOW. ACR'S BETTER WAKE UP BEFORE IT'S TOO LATE AND THEY PAY THE ULTIMATE PRICE OF KILLING A PLANE FULL OF PAX BY OVERWORKING THEIR EMPLOYEES.