TM55-1510-221-10 Table  3-1,  Autopilot  System  Limits (Sheet 2 of 2) MODE LOC  or APR or BC (cont) CONTROL  OR  SENSOR PARAMETER VALUE Glideslops   Capture GS Receiver and Beam  Capture Function  of  beam Air Data and  beam  rate.  Trip Computer point is 30 microamps Pitch  Command ±10 deg Limit Glideslope  Damping Vertical  velocity Pitch  Rate  Limit f (TAS) Gain  Programming f (time and TAS) starts at 1200 ft radio altitude,  gain  reduction  = 1 to .33 f (Radio Alt) starts at 250 ft. gain reduction = .33 at 250 ft to 0 at 0 ft. GA Control Switch on  Throttles Pitch CWS Switch on Sync Wheel ALT  Hold Air  Data Computer VS  Hold Air Data Computer IAS  Hold Air Data Computer ALT  Preselect  Air  Data  Computer Fixed Pitch-Up 7 deg Pitch Up Command,  Wings  Level Pitch  Attitude ±20 deg max Command ALT Hold Engage Range 0 to 50,000 ft ALT Hold Engage Error ±20 ft Pitch  Limit ±20 deg Pitch  Rate  Limit f (TAS) VERT Speed Engage 0 to ±6,000 ft/min. Range VERT Speed Hold Engage ±30 ft/min Error Pitch Limit ±20 deg Pitch  Rate  Limit f (TAS) IAS Engage Range 80 to 450 knots IAS Hold Engage Error ±5  knots Pitch  Limit ±20 deg Pitch  Rate  Limit f (TAS) Preselect Capture Range 0 to 50,000 ft Maximum  Vertical ±4,000  ft/min Speed for Capture Maximum  Gravitational ±20g Force During Capture Maneuver Pitch  Limit ±20 deg Pitch  Rate  Limit f (TAS) 3-45