TM 1-1510-225-10 3B-33 Table 3B-7.  Autopilot System Limits  (Continued) MODE CONTROL OR SENSOR PARAM ETER VALUE LOC or APR or BC (Cont.) Pitch Command Limit 10 Glideslope Damping Vertical Velocity Pitch Rate Limit Function of (TAS) Gain Programming Function of Time and (TAS) Starts at 1200 ft radio altitude Function of Radio Alt Starts at 250 ft GA Control Switch on Power Lever Fixed Pitch-Up Command, Wings Level 7° Pitch Up Pitch Sync TCS Switch on Control Wheel Pitch Attitude Command 20 Max ALT Hold Air Data Computer ALT Hold Engage Range 0 to 50,000 ft ALT Hold Engage Error 20 ft Pitch Limit 20 Pitch Rate Limit Function of (TAS) VS Hold Air Data Computer VERT Speed Engage Range 0 to ± 6000 ft/min ALT Speed Hold ± 30 ft Engage Error Pitch Limit ± 20° Pitch Rate Limit Function of (TAS) IAS Hold Air Data Computer IAS Engage Range 80 to 450 knots IAS Hold Engage Error ± 5 knots Pitch Limit ± 20 Pitch Rate Limit Function of (TAS) ALT Pre-select Air Data Computer Pre-select Capture Range 0 to 50.000 ft Maximum Vertical Speed for Capture ± 4000 ft/min Maximum Gravitational Force During Capture Maneuver ± .2g Pitch Limit ± 20° Pitch Rate Limit Function of (TAS) f.    Touch Control Steering.  The Touch Control Steering   (TCS)   push   button   on   the   control   wheel allows  the  pilot  to  manually  change  aircraft  attitude, altitude,     vertical     speed     and/or     airspeed     without disengaging    the    autopilot.        After    completing    the manual  maneuver,  the  TCS  push  button  is  released and  the  autopilot  is  automatically  resynchronized  to the  vertical  mode:  e.g.,  with  IAS  mode  selected,  the pilot  may  press  the   TCS  push  button  and  manually change airspeed.  Once trimmed at the new airspeed, the  TCS push button is released and the autopilot will hold this airspeed.  If a large pitch attitude change is made,  the  pilot  should  perform  his  normal  trim  of  the aircraft before releasing the TCS button. NOTE Either pilot’s TCS button will permit changing   of   the   autopilot   regardless   of which  pilot  has  control  of  the  autopilot.   Also,  use  of  the  TCS  will  cancel  the  other pilot’s flight director GA mode.