Narrative:

During descent; unscheduled stabilizer trim light annunciated followed by autoplt disconnect. Followed QRH and flight manual procedures. Using manual control (hand flying) aircraft control forces were stiffer than normal. Flew rest of the approach manually and had to trim using center pedestal switches. The first officer also flew the aircraft to verify my impressions of the control forces required. Approach and landing were otherwise uneventful. Entered write-up in maintenance log and discussed aircraft status with maintenance.

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Original NASA ASRS Text

Title: B757 FLT CREW REPORTS UNSCHED STAB TRIM LIGHT FOLLOWED BY AUTO PILOT DISCONNECT DURING DESCENT. QRH COMPLIED WITH AND REMAINDER OF FLIGHT FLOWN USING ALTERNATE TRIM SWITCHES.

Narrative: DURING DSCNT; UNSCHEDULED STABILIZER TRIM LIGHT ANNUNCIATED FOLLOWED BY AUTOPLT DISCONNECT. FOLLOWED QRH AND FLT MANUAL PROCS. USING MANUAL CTL (HAND FLYING) ACFT CTL FORCES WERE STIFFER THAN NORMAL. FLEW REST OF THE APCH MANUALLY AND HAD TO TRIM USING CTR PEDESTAL SWITCHES. THE FO ALSO FLEW THE ACFT TO VERIFY MY IMPRESSIONS OF THE CTL FORCES REQUIRED. APCH AND LNDG WERE OTHERWISE UNEVENTFUL. ENTERED WRITE-UP IN MAINT LOG AND DISCUSSED ACFT STATUS WITH MAINT.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.