B737-500 CREW HAD JAMMED STAB IN BUF CLASS E.

Narrative

KBUF TO KEWR. DURING CLBOUT; THE ELECTRIC HORIZONTAL STABILIZER BECAME INOPERATIVE. MANUAL TRIMMING WAS ATTEMPTED BUT THE STABILIZER WOULD NOT MOVE. A CROSSCHECK FOR TRIPPED CB'S WAS MADE AND ALL APPEARED TO BE IN; INCLUDING THE 'STABILIZER TRIM' CB. THE QRH 'JAMMED STABILIZER' CHECKLIST WAS UTILIZED. THE ACFT WAS CONTROLLABLE BUT WITH NOTABLE FORWARD YOKE PRESSURE. ANY EMER WAS DECLARED; AN AIR RETURN BACK TO KBUF. THE LANDING WAS UNEVENTFUL WITH A RETURN TO THE GATE. MAIN INSPECTED THE ACFT AND FOUND THE 'TRIM ACTUATOR' CB TRIPPED. MAIN SAID THE CB MIGHT HAVE TRIPPED DUE TO THE H.S. TRIM MOTOR BINDING OR OVERHEATING. HUMAN PERFORMANCE: THE ACR AFM TO ABNORMAL PROCEDURES DESCRIBES CHECKING FOR TRIPPED CB'S PRIOR TO INITIATING ANY QRH CHECKLIST. MY PERCEPTION OF SEEING THE STABILIZER TRIM CB IN AND NOT SEEING THE TRIM ACTUATOR CB TRIPPED (WHICH IS ON A DIFFERENT PANEL) HAD ME BELIEVE ELECTRICAL PWR WAS AVAILABLE TO THE MOTOR. THE QRH WOULD HAVE BEEN A LOT MORE HELPFUL IF IT STATED THAT TWO DIFFERENT CB'S CONTROL PWR TO ONE SY (ELECTRIC TRIM). I RECOMMEND AN UPDATE TO THE QRH; REFERENCING MORE CB LOCATIONS THAT CONTROL THE ELECTRICAL PWR TO SYS.