Installation of an AV557D cockpit voice recorder.

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-726-20/30.

Installation of Collins AP-104/FD-109F Flight Control System.

Installation of Mitchell automatic flight system AK422/FD consisting of Century IV autopilot/flight director with command electric trim.

Installation of Collins AP104/FD109H Flight Control System.

Installation of Collins AP-103F/FD108 and AP-103F/FS108G,AP-103F/FD109G autopilot and flight director. (65-A90 WITH 90-4031 KIT)

Installation of Sperry SPZ-200 autopilot and Stars Instrument System or SPI-77C flight director system.

Installation of Mitchell automatic flight system model YK384 consisting of yaw damper

Installation of Mitchell flight director remote annunciator Model AK375.

Installation of Mitchell automatic flight system AK318 consisting of Century III autopilot with optional automatic pitch trim, radio coupler, and glide slope coupler.