Small in size, the controller measures only 6¼” W X 1” H X ¾” D and it may be installed in a single or dual controller configuration without modification to the system.
The following subsystem functions are selectable from the controller:
¦AP¦ Autopilot (ON-OFF) – When AP “ON” selected, AP comes on in attitude retention mode in pitch and roll axes and “ATT” will be annunciated under HDG button
¦YD¦ Yaw Damper (ON-OFF) – Engages with AP ON – YD may be operated independently, with AP and/or with SCAS
¦FT¦ Force Trim (ON-OFF) –Only selectable when AP is ”OFF” – may be operated with SCAS and/or YD/or independently.
¦SCAS¦ SCAS (OFF-ON) – Defaults to ON at aircraft system power up – May be operated independently – Independent operation requires hands on cyclic at all time
The following autopilot modes are selectable from the controller:
¦HDG¦ Heading – follows heading bug from DG/HSI
¦IAS¦ Indicated Airspeed – samples and maintains current airspeed at engagement
¦ALT¦ Altitude Hold – samples and maintains current altitude at engagement Glide slope is armed when selected while in Alt mode if tracking the localizer GS annunciation is located under ALT button
¦VS¦ Vertical Speed – samples and maintains current vertical speed at engagement
¦LNAV¦ Lateral Navigation – senses selected navigation source such as VOR, LOC, GPSS, and Back Course Back Course (B/C) annunciation is located below LNAV button
¦VNAV¦ Vertical Navigation – mode used for WAAS GPS LPV approach