Approved modifications · supplemental type certificate · historical · reissued

SA2687NM

Installation of Truboplus/ Electronics Int'l gauges and switches. Held by Acd Corporation, which holds 2 approved modifications in all. Last revised February 24, 1992. System: other and general.

What it applies to

Kind of product: Aircraft
Design holder: Ag Cat Corporation; Air Tractor Inc.; Air Tractor Inc.; Air Tractor Inc.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; Arctic Aircraft Company Inc.; Arctic Aircraft Company Inc.; Augustair Inc.; Ayres Corporation; Ayres Corporation; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bellanca Aircraft Corporation; Bellanca Aircraft Corporation; Bellanca Aircraft Corporation; Bellanca Aircraft Corporation; British Aerospace (Scotland); British Aerospace (Scotland); British Aerospace (Scotland); British Aerospace (Scotland); British Aerospace (Scotland); British Aerospace (Scotland); British Aerospace (Scotland); 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; Commander Aircraft Company; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Consolidated Vultee Aircraft Corporation Stinson Division; Curtiss-Wright Corporation; The Enstrom Helicopter Corporation; The Enstrom Helicopter Corporation; Funk Aircraft Company; Gulfstream Aerospace Corporation; Gulfstream Aerospace Corporation; Gulfstream Aerospace Corporation; Hiller Aviation; Hiller Aviation; Hiller Aviation; Hiller Aviation; Maule Aerospace Technology Inc.; McDonnell Douglas Corporation; MD Helicopter Inc.; Mooney Aircraft Corporation; Navion Aircraft Company Ltd.; Partenavia Costruzioni Aeronauticas S.p.A.; Pilatus Britten-Norman Limited; 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.; 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.; 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.; Pratt & Whitney Division; Prop-Jets 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; REVO Incorporated; REVO Incorporated; REVO Incorporated; Robinson Helicopter Company; Rockwell International Corporation; Rogerson Hiller Corporation; Rogerson Hiller Corporation; Schweizer Aircraft Corporation; Sky International Inc.; Sky International Inc.; SOCATA - Groupe Aerospatiale; Textron Lycoming AVCO Corporation; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; The Waco Aircraft Company; Weatherly Aviation Company Inc.; Weatherly Aviation Company Inc.
Models: G-164 Series, AT-400, AT-302, AT-300, 7 Series, 11AC, S11BC, S11AC, 11BC, 8GCBC, 8KCAB, S-1A Series, S-1B Series, 2150 Series, S2R Series, S2R Series, 47 Series, 47 Series, 47 Series, 14-19 Series, 17 Series, CH-400 Skyrocket, 300-W Pacemaker, Twin Pioneer Series 3, Twin Pioneer Series 2, B.206 Series 2, B.206 Series 1, B.121 Series 3, B.121 Series 2, B.121 Series 1, 310, 172, 182, 175, 152, 150, 210, 185, 340, 335, 320, 305 Series, 180, 140, 120, 190, 170, 177, 207, 336, T303, 206, 337, 414, 401, 402, 411, 421, 425, 188, 112 Series, SM-1F, SM-1, SM-2AB, SM-2AC, SM-2ACS, SM-7A, SM-2, JR....
Type certificates: 1A16, A9SW, A9SW, A9SW, A-759, A-761, A-761, A-761, A-761, A21CE, A21CE, A-737, A-754, 4A19, A3SW, A4SW, 2H1, 2H3, H-1, 1A3, A18CE, ATC 319, ATC 328, 7A7, 7A7, A11EU, A11EU, A22EU, A22EU, A22EU, 3A10, 3A12, 3A13, 3A17, 3A19, 3A19, 3A21, 3A24, 3A25, 3A25, 3A25, 5A5, 5A6, A-768, A-768, A-790, A-799, A13CE, A16CE, A2CE, A34CE, A4CE, A6CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A9CE, A12SO, ATC 136, ATC 16, ATC 161, ATC 194, ATC 194, ATC 298, ATC 48, ATC 519, ATC 530, ATC 580, ATC 594, ATC 608, ATC 609, ATC 609, ATC 352, H1CE, H1CE, 2-564, 1A17, A11SO, A12EA, 6H1, 6H2, H1WE, H1WE, 3A23, A-762, H3WE, 2A3, A-782, A31EU, A17EU, 1A1, 1A10, 1A15, 1A2, 1A4, 1A6, 2A10, 2A13, 2A8, A-780, A-797, A-800, A-805, A10SO, A18SO, A19SO, A1EA, A1EA, A1EA, A25SO, A3SO, A7SO, A8EA, A9SO, AR-7, ATC 145, 3A18, 3A15, 3A15, 3A15, 3A16, 3A16, 3A16, 3A16, 3A20, 3A20, 5A3, 5A3, 5A4, A-757, A-765, A-765, A12CE, A14CE, A14CE, A1CE, A1CE, A1CE, A23CE, A24CE, A24CE, A24CE, A24CE, A29CE, A30CE, A31CE, 1A13, 1A13, 1A13, H10WE, A-2-575, 4H11, 4H11, 4H12, A8SO, A8SO, A17SO, ATC 42, A11EA, A16EA, A16EA, A16EA, A16EA, 2-361, 2-363, 2-430, 543, 598, 598, 598, 626, 626, 664, 664, 665, 677, 677, 714, 714, 714, ATC 123, ATC 13, ATC 13, ATC 168, ATC 240, ATC 26, ATC 26, ATC 26, ATC 26, ATC 26, ATC 311, ATC 313, ATC 345, ATC 362, ATC 41, ATC 42 Page 429, ATC 453, ATC 464, ATC 466, ATC 467, ATC 468, ATC 473, ATC 479, ATC 491, ATC 499, ATC 502, ATC 511, ATC 538, ATC 538, ATC 538, ATC 542, ATC 546, ATC 568, ATC 575, ATC 575, ATC 575, ATC 586, ATC 586, ATC 586, ATC 586, ATC 586, ATC 597, ATC 597, ATC 627, ATC 639, ATC 639, A10WE, A26WE
On this site: Aeronca S11 9 registered
Ag-Cat Corporation G-164 5 registered
Air & Space America Inc 18 6 registered
Air Tractor Inc AT-400 49 registered
American Champion Aircraft 7 Citabria and Champ 429 registered
American Champion Aircraft 8 Decathlon and Scout 668 registered
American General Acft Corp AG5 114 registered
American AA-5 127 registered
Beechcraft 1900 Airliner 157 registered
Cessna T303 59 registered
Champion 402 8 registered
Hiller UH-12 217 registered
Piper PA-12 Super Cruiser 1,247 registered
Piper PA-14 100 registered
Piper PA-15 165 registered
Piper PA-16 Clipper 276 registered
Piper PA-17 Vagabond 96 registered
Piper PA-20 Pacer 323 registered
Piper PA-22 Tri-Pacer and Colt 2,940 registered
Piper PA-23 Apache and Aztec 1,316 registered
Piper PA-24 Comanche 2,428 registered
Piper PA-25 Pawnee 455 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,633 registered
Piper PA-30 Twin Comanche 879 registered
Piper PA-31 Navajo and Chieftain 935 registered
Piper PA-32 Cherokee Six, Lance and Saratoga 3,917 registered
Piper PA-34 Seneca 998 registered
Piper PA-36 Pawnee Brave 99 registered
Piper PA-38 Tomahawk 442 registered
Piper PA-39 Twin Comanche C/R 82 registered
Piper PA-44 Seminole 599 registered
Piper PA-46 Malibu, Mirage, Matrix and M-Class 1,692 registered
Waco EGC-8 7 registered
Waco YKS-7 21 registered
Waco YQC-6 5 registered
Waco ZKS-7 5 registered
Waco ZQC-6 7 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 7, 2026.