The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

SA00749AT

Modification of flush type fuel caps for installation of a locking cylinder and keeper. (1964 and subsequent). Held by Aero Trim, INC, which holds 26 approved modifications in all. Last revised December 10, 1997. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Beech Aircraft Corporation; 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 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; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; 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.; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
Models
PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P), PA-60-602P (Aerostar 602P), PA-60-700P (Aerostar 700P), D18C-T, 310 Series, 182 Series, 177A, 177B, 177, 177RG, 500, 550, S550, 552, 560, 551, 501, 441, 421B, 402A, 421C, 421A, 421, 414A, 414, 411A, 411, 402C, 402B, 425, 402, 401, 401B, 401A, Learjet 60, Learjet 24D, Learjet 24C, Learjet 24B-A, Learjet 24B, Learjet 24A, Learjet 24, Learjet 24E, Learjet 24F, Learjet 29, Learjet 55C, Learjet 55B, Learjet 36A, Learjet 35A (C-21A), Learjet 35, Learjet 24D-A, Learjet 31, Learjet 36, Learjet 28, Learjet 25F, Learjet...
Type certificates
A17WE, A17WE, A17WE, A17WE, A17WE, 770, 3A10, 3A13, A13CE, A13CE, A13CE, A20CE, A22CE, A22CE, A22CE, A22CE, A22CE, A27CE, A27CE, A28CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A5CE, 2A3, 2A3, 2A3, 2A3, 2A3, 2A3, 2A3, 2A3, 2A3, A20SO, A20SO, A20SO, A20SO, A8EA, A8EA, A8EA, A8EA, A8EA, A8EA, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, 5A3, 5A3, 5A3, 5A3, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-757, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-765, A-777, A-777, A-777, A-777, A-777, A-777, A-777, A-777, A-777, A12CE, A12CE, A12CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A14CE, A16SW, A16SW, A16SW, A16SW, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A23CE, A23CE, A23CE, A23CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A29CE, A30CE, A31CE, A38CE
On this site
Aerostar Acft Corp Of Texas M20 23 registered
Beechcraft 1900 Airliner 157 registered
Beechcraft 300 King Air 300 131 registered
Beechcraft 35 Bonanza and Debonair 1,077 registered
Beechcraft 58 Baron 1,295 registered
Beechcraft 65 201 registered
Beechcraft 95 Travel Air and Baron 55 1,244 registered
Beechcraft A100 15 registered
Beechcraft A200 34 registered
Beechcraft A23 329 registered
Beechcraft A36 Bonanza 2,530 registered
Beechcraft A45 167 registered
Beechcraft A65 7 registered
Beechcraft B100 58 registered
Beechcraft B200 King Air B200 715 registered
Beechcraft B300 King Air 350 784 registered
Beechcraft B36 Bonanza 308 registered
Beechcraft D-45 75 registered
Beechcraft E18 58 registered
Beechcraft TC-45 7 registered
Beechcraft UC-45 9 registered
Cessna 177 Cardinal 2,158 registered
Cessna 182 Skylane 11,832 registered
Cessna 190 74 registered
Cessna 310 1,410 registered
Cessna 401 51 registered
Cessna 402 174 registered
Cessna 411 10 registered
Cessna 414 Chancellor 605 registered
Cessna 421 Golden Eagle 769 registered
Cessna 425 Conquest I 161 registered
Cessna 441 Conquest II 172 registered
Cessna 500 Citation I 62 registered
Cessna 501 Citation I/SP 189 registered
Cessna 550 Citation II 500 registered
Cessna 551 34 registered
Cessna 560 Citation V, Ultra, Encore and Excel 1,344 registered
Cessna S550 94 registered
Mitsubishi MU-300 17 registered
Piper PA-31 Navajo and Chieftain 935 registered
Piper PA-60 Aerostar 57 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.