SA838SW
Installation of Mitchell glide slope coupler Model 1C493. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised June 29, 1984. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The de Havilland Aircraft Co. Ltd (England); Miscellaneous; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation
- Models
- 310H, 310J, 310K, 310L, 182K, 182J, 182H, 210G, T210F, 210F, 320E, 320D, 402, 411, 401, DH 104 Dove Series 6A, Miscellaneous, PA-23-250, PA-23-235, PA-E23-250, PA-24-250, PA-24-260, PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-30, 500-A, 500-U, 500-B
- Type certificates
- 3A10, 3A10, 3A10, 3A10, 3A13, 3A13, 3A13, 3A21, 3A21, 3A21, 3A25, 3A25, A7CE, A7CE, A7CE, A-807, Miscellaneous, 1A10, 1A10, 1A10, 1A15, 1A15, 2A13, 2A13, 2A13, 2A13, A1EA, 6A1, 6A1, 6A1
- On this site
- Cessna 182 Skylane 11,832 registered
Cessna 210 Centurion 1,528 registered
Cessna 310 1,410 registered
Cessna 320 137 registered
Cessna 401 51 registered
Cessna 402 174 registered
Cessna 411 10 registered
Cessna 500 Citation I 62 registered
Cessna T210 Turbo Centurion 1,283 registered
Piper PA-23 Apache and Aztec 1,316 registered
Piper PA-24 Comanche 2,428 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,636 registered
Piper PA-30 Twin Comanche 879 registered - The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 22, 2026.