The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · historical · reissued

SA01240SE (4 OF 5)

Installation of secondary voltage indication system. Held by Visual Instruments LLC, which holds 7 approved modifications in all. Last revised August 27, 2016. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
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; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Helio Aircraft Corporation; Helio Aircraft Corporation; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; 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.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Reims Aviation S.A.; Rust Robert E.; Rust Robert E.; Rust Robert E.; SOCATA; SOCATA; SOCATA; SOCATA; SOCATA; SOCATA; Stearman Aircraft Company; Stearman Aircraft Company; Stearman Aircraft Company; Stearman Aircraft Company; Stearman Aircraft Company; Stearman Aircraft Company; Stearman Aircraft Company; Swift Museum Foundation Inc.; Swift Museum Foundation Inc.; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation
Models
F150G, F150H, F150J, F150K, F150L, F150M, F152, F172D, F172E, F172F, F172G, F172H, F172K, F172L, F172M, F172N, F172P, F177RG, FA150K, FA150L, FA152, FRA150L, FRA150M, 112, 112B, 112TC, 112TCA, 114, 114A, 114B, 114TC, 15A, 20, J-2, J-3, J3C-40, J3C-50, J3C-50S, J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)), J3C-65S, J3F-50, J3F-50S, J3F-60, J3F-60S, J3F-65 (Army L-4D), J3F-65S, J3L-65 (Army L-4C), J3L-65S, J3L-S, J3L, J3P, J4, J4A-S, J4A, J4B, J4E (Army L-4E), J4F, PA-11, PA-11S, PA-15, PA-16, PA-16S, PA-17, PA-18-105 (Special), PA-18-125 (Army L-21A), PA-18-135,...
Type certificates
A13EU, A13EU, A13EU, A13EU, A13EU, A13EU, A13EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A26EU, A13EU, A13EU, A13EU, A13EU, A13EU, A12SO, A12SO, A12SO, A12SO, A12SO, A12SO, A12SO, A12SO, 3A3, 3A3, ATC 595, ATC 660, A-691, A-691, A-691, A-691, A-691, A-692, A-692, A-692, A-692, A-692, A-692, A-698, A-698, A-698, A-698, TC 695, A-703, A-703, A-703, TC 708, A-740, TC 721, A-691, A-691, A-800, 1A1, 1A1, A-805, 1A2, 1A2, 1A2, 1A2, 1A2, AR-7, 1A2, AR-7, 1A2, AR-7, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A4, 1A4, 1A4, 1A4, 1A4, 1A4, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A10, 1A10, 1A10, 1A10, 1A15, 1A15, 1A15, 1A15, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, A1EA, A20SO, A20SO, A20SO, A20SO, A8EA, A8EA, A8EA, A8EA, A8EA, A8EA, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A7SO, A7SO, A7SO, A10SO, A9SO, A10SO, A9SO, A10SO, A9SO, A18SO, A1EA, A1EA, A32SO, A19SO, A19SO, A25SO, A25SO, A25SO, 1A10, A54EU, A44EU, A44EU, A44EU, A51EU, A51EU, A51EU, A51EU, A51EU, A60EU, TC 2-155, ATC 305, ATC 292, ATC 459, ATC 55, TC 2-159, ATC 251, A-766, A-766, A-767, A-767, A-767, A-767, A-767, A-787, A-787, A-787, A-787, A-787, A-787, A-787, A-787
On this site
Commander Aircraft Co 114 103 registered
Daher (Socata) TB 10 53 registered
Daher (Socata) TB-20 200 registered
Daher (Socata) TB200 11 registered
Daher (Socata) TB21 57 registered
Daher (Socata) TBM-700 TBM 700 through TBM 960 1,011 registered
Dehavilland DHC-1 105 registered
Piper J-3 Cub 3,806 registered
Piper PA-11 Cub Special 443 registered
Piper PA-15 165 registered
Piper PA-16 Clipper 276 registered
Piper PA-17 Vagabond 97 registered
Piper PA-18 Super Cub 3,620 registered
Piper PA-19 15 registered
Piper PA-20 Pacer 323 registered
Piper PA-22 Tri-Pacer and Colt 2,942 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
Piper PA-31 Navajo and Chieftain 935 registered
Piper PA-32 Cherokee Six, Lance and Saratoga 3,917 registered
Piper PA-34 Seneca 996 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-42 59 registered
Piper PA-44 Seminole 600 registered
Piper PA-46 Malibu, Mirage, Matrix and M-Class 1,692 registered
Rockwell International 112 207 registered
Stearman Aircraft C3 17 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.