| AK968 dtd 4/20/87 Dwg. No. 87A1179 dtd 4/20/87 | Century 2110/2130/ 2131 Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK972 Dwg. No. 87A1182 dtd 7/3/87 | Century 2010/2030/2031 Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK972-2010, -2030, -2031, -2050, -2051 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK973 | Century Yaw Damper | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK974 dtd 7-24-87 Dwg. No. 87A1184 dtd 7-24-87 | Century Autopilot 2010/2030/2031 | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK975 dtd 09-18-87 Dwq. No. 87A1185 dtd 09-18-87 | Century Autopilot 2010/2030/2031 | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK975-2010, -2030, -2031, -2050, -2051 per Bulletin 2031 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK976 and 1C753 per Bulletin No. 2032 | Autopilot with yawdamper | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK976 dtd 02-09-88 Dwg. 87A1186 dtd 02-09-88 With 1C753-203 Yaw Damper | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK977 dtd 12-10-87 Dwg. No. 87A1188 dtd 12-10-87 | Century Autopilot 2010/2030/2031 | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK977 dtd 12-10-87 Dwq. No. 87A118B dtd 12-10-87 | Century Autopilot 2010/2030/2031 | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK977-2010, -2030, -2031, -2050, -2051 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK978 dtd 12-29-87 Dwg. No. 87A1189 dtd 12-29-87 | Century Autopilot 2110/2130/2131 | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK978-2110 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK978-2130 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK978-2131 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK978-2150 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK978-2151 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK979 dtd 3-10-88 Dwg. 87A1190 dtd 3-10-88 | Century 2010/2030/2031 Autopi1ot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK980 dtd 04-19-88 Dwg. 87A1191 dtd 04-19-88 | Century 2010/2030/2031 Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK980-2010 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK980-2030 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK980-2031 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK980-2050 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK980-2051 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK981 dtd 04-25-88 Dwg. 87A1192 dtd 04-25-88 | Century 2110/2130/2131 Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK981-2110, -2130, -2131, -2150, -2151 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Avionics / Electronics | PMA |
| AK982 dtd 05-10-88 Dwg. 87A1193 dtd 05-10-88 | Century 2010/2030/2031 Antopi1ot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK982-2010 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK982-2030 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK982-2031 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK982-2050 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK982-2051 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK983 dtd 05-23-88 Dwg. 87A1194 dtd 05-23-88 | Century 2000 Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK984 dtd 07-01-08 Dwg. 87A1195 dtd 07-01-88 | Century Command Trim System | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK985 dtd 09-01-88 Dwg. 87A1196 dtd 09-01-88 | Century Command Trim System | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK986 dtd 09-19-88 Dwg. 87A1197 dtd 09-19-88 | Century 2110/2130/2131 Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK986-2110, -2130, -2131, -2150, -2151 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK987 dtd 09-26-88 Dwg. 87A1198 dtd 09-26-88 | Century Command Trim System | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK988 dtd 09-30-88 Dwg. 87A1199 dtd 09-30-88 | Century 2110/2130/2131 Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK989 dtd 12-22-88 Dwg. 87A1200 dtd 12-22-88 | Century 2010/2030/2031 Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK989-2010, -2030, -2031, -2050, -2051 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK990 | Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| AK991 per Bulletin No. 2049 | Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| AK991-2110 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK991-2110, -2130, -2131, -2150, -2151 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK991-2130 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK991-2131 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK991-2150 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |
| AK991-2151 | Century 2000 Autopilot | Century Flight Systems Inc | | 22 | Avionics / Electronics | PMA |