Narrative:

Mechanical fault in the trim system which required excessive yoke forces. Circle the field and made a precautionary landing. Landing was normal.

Google
 

Original NASA ASRS Text

Title: BARON 58 EXPERIENCES FLT CTL FORCES IN EXCESS OF NORMAL AND RETURNS TO LAND TEB.

Narrative: MECHANICAL FAULT IN THE TRIM SYS WHICH REQUIRED EXCESSIVE YOKE FORCES. CIRCLE THE FIELD AND MADE A PRECAUTIONARY LNDG. LNDG WAS NORMAL.

Data retrieved from NASA's ASRS site as of July 2007 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.