SA1494SW
Installation of Mitchell flight director remote annunciator Model AK375. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised July 10, 1984. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Alexandria Aircraft LLC; Alexandria Aircraft LLC; Alexandria Aircraft LLC; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC
- Models
- 17-30A, 17-31A, 17-31ATC, 36, 58, 58A, 60, 65-80, 65-A80-8800, 65-A80, 65-B80, 65, 70, 95-55, 95-A55, 95-B55, 95-B55B, 95-C55, A36, A60, A65-8200, A65, B60, B90, C90, D55, D55A, E55, E55A, E90, F33A, 310N, 310P, 310Q, 337E, 337F, 340, 401, 401A, 401B, 402, 402A, 414, 421B, T310P, T310Q, MU-2B-20, MU-2B-25, PA-23-235, PA-23-250, PA-31P-350, PA-31P, PA-31T, PA-31T1, PA-31T2, PA-31T3, PA-E23-250, 500-A, 500-B, 500-S, 500-U
- Type certificates
- A18CE, A18CE, A18CE, 3A15, 3A16, 3A16, A12CE, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A16, 3A16, 3A16, 3A16, 3A16, 3A15, A12CE, 3A20, 3A20, A12CE, 3A20, 3A20, 3A16, 3A16, 3A16, 3A16, 3A20, 3A15, 3A10, 3A10, 3A10, A6CE, A6CE, 3A25, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, 3A10, 3A10, A2PC, A2PC, 1A10, 1A10, A8EA, A8EA, A8EA, A8EA, A8EA, A8EA, 1A10, 6A1, 6A1, 6A1, 6A1
- On this site
- Beechcraft 36 Bonanza 111 registered
Beechcraft 58 Baron 1,295 registered
Beechcraft 60 Duke 32 registered
Beechcraft 65 201 registered
Beechcraft 95 Travel Air and Baron 55 1,244 registered
Beechcraft A36 Bonanza 2,530 registered
Beechcraft A60 43 registered
Beechcraft A65 7 registered
Beechcraft B-60 186 registered
Beechcraft B90 29 registered
Beechcraft C90 King Air C90 607 registered
Beechcraft D55 119 registered
Beechcraft E-55 215 registered
Beechcraft E-90 King Air E90 146 registered
Beechcraft F33 Bonanza 1,009 registered
Bellanca 17 Viking 628 registered
Cessna 310 1,410 registered
Cessna 337 Skymaster 370 registered
Cessna 340 707 registered
Cessna 401 51 registered
Cessna 402 174 registered
Cessna 414 Chancellor 605 registered
Cessna 421 Golden Eagle 769 registered
Cessna 500 Citation I 62 registered
Cessna T-310 207 registered
Mitsubishi MU-2 177 registered
Piper PA-23 Apache and Aztec 1,316 registered
Piper PA-31 Navajo and Chieftain 935 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 21, 2026.