The use of Hand-held fire extinguishers containing Halon in Aircraft will become prohibited end of 2025 and you will need to replace all them.
Installation of KAP 150 two-axis or KFC 150 two-axis flight control system with optional third (yaw) axis and optional KAP 297B Vertical Speed and Altitude Selector.
Installation of King KAS 297 altitude selector option
Installation of S-TEC System 60 Pitch Stabilization System, Model ST-454, with Optional Automatic Electric Trim System.
Automatic flight system YK877 consisting of yaw damper system.
Installation of S-TEC System 60 two axis automatic flight guidance system, Model ST-312 with optional autotrim system.
Mitchell automatic flight system AK800/FD consisting of Century41/flight director autopilot.
Installation of S-TEC System 65 two axis automatic flight guidance system with Autotrim, Model ST-311.
Installation of King KFC 200 2 axis(3 optional) Flight Control System with King KCS 55 (or -55A) compass and a King KI 255 (or -256) Flight Command Indicator or a KG 258 Attitude Horizon Gyro with a KC 292 Mode Controller.
Installation of the KMD 250 Multi-Function Display System with Optional Internal VFR GPS and Optional Traffic and Weather Sensors.