Mitchell automatic flight system AK242 consisting of Century III autopilot with optional automatic pitch trim and radio coupler.

Installation of a Century Automatic Flight System, Model AK1053. All serial numbers 27-3456 and below.

Installation of a Century Automatic Flight System, Model AK1049 consisting of a Century 2010/2030/2031/2050/2051 autopilot.

Installation of S-TEC System 65 two axis automatic flight guidance system, Model ST-533.

Installation of a Mitchell AK184 automatic flight system, AK185 stabilizer, and AK188 automatic trim system.

Installation of S-TEC System 40/50 single and two axis automatic flight guidance systems, Model ST-508.

Installation of S-TEC System 60 two axis automatic flight guidance system, Model ST-486, with optional automatic electric trim system.

Installation of S-TEC System 60 two axis automatic flight guidance system, model ST-332, with optional automatic electric trim system. (PA-23-250 SN 27-1 thru 27-504)

Installation of King KAS 297 altitude selector option in airplanes equipped with KFC 200 Flight Control System with Flight Director, installed under STC SA1163CE.

Installation of KFC-200 automatic flight control system (2 axis), with or without flight command indicator.