STABILIZER TRIM NOT OPERATING PROPERLY. ALTHOUGH IT WORKS; IT SEEMS TO STICK AND BE SLUGGISH.

Narrative

CLBING OUT OF CLT; STABILIZER TRIM BEGAN BINDING AND MAKING LOUD NOISES. LEVEL OFF WAS DIFFICULT; WITH POSSIBLE SLIGHT ALTDEV. TO COMPLICATE MATTERS; DEVS AROUND CONVECTIVE ACTIVITY WAS NECESSARY. WITH NO APPARENT FIX; DECISION WAS MADE TO LAND AT GSO. FLT ATTENDANTS AND PAX WERE INFORMED AND PRECAUTIONARY LNDG MADE WITHOUT INCIDENT. ATC HANDLING WAS EXCELLENT. CONVERSATIONS WITH ATC CTLRS ON PHONE AFTERWARDS REVEALED NO ALTDEVS; AND ALL WERE HAPPY TO HELP. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: RPTR WAS CALLED TO SEE IF THIS RPT INVOLVED ANY LOSS OF CTL FOR THE 'UPSET' STUDY. RPTR FELT THAT ACFT WAS IN FULL CTL OF HIM AT ALL TIMES. THIS ABNORMALITY WAS ENCOUNTERED BY THE FO WHO WAS FLYING THE ACFT. THE CAPT TOOK CTL TO COMPARE ANALYSIS OF WHAT WAS HAPPENING. ACFT FLEW SMOOTHLY AND RESPONDED TO ALL CTL INPUTS; EXCEPT THE TRIM WAS SLUGGISH FOR THE FIRST PART OF THE FLT. EVERYTHING ELSE WAS NORMAL FOR THE FLT. NOTHING UNUSUAL HAPPENED IN THE CONTROLLABILITY OF THE ACFT.