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

SA5190NM

Installation of Gustin Aviation chip detector light system. Held by A & L Aircraft Parts INC, which holds 5 approved modifications in all. Last revised September 25, 2019. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Air Tractor Inc.; Air Tractor Inc.; Air Tractor Inc.; Air Tractor Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company; Weatherly Aircraft Company
Models
AT-300, AT-301, AT-401, AT-501, G-164, G-164A, G-164B-15T, G-164B-20T, G-164B-34T, G-164B (with 73 Inc.h wing gap), G-164B, G-164C, G-164D (with 73 Inc.h wing gap), G-164D, AT-6 (SNJ-2), AT-6A (SNJ-3), AT-6B, AT-6C (SNJ-4), AT-6D (SNJ-5), AT-6F (SNJ-6), BC-1A, DC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C, SNJ-7, T-6G, 18S (Army C-45C), Army AT-11, B18S (Army F-2), D17S, D18S, E18S, G17S, G18S, H18, SD17S, 600-S-2C, 600 S-2D, 600 S-2D, S-2B, S-2C, S-2R, S-2R, S2R-G1, S2R-G10, S2R-G5, S2R-G6, S2R-R1340, S2R-R1340,...
Type certificates
A9SW, A9SW, A17SW, A17SW, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-669, A-669, A-669, A-669, A-669, A-669, A-669, A-669, A-669, A-669, A-2-575, A-2-575, TC 710, A-2-582, TC 710, A-649, A-765, A-765, TC 779, A-765, A-765, A-649, 2A7, A3SW, A4SW, 2A7, 2A7, A3SW, A4SW, A4SW, A4SW, A4SW, A4SW, A3SW, A4SW, A4SW, A3SW, A4SW, A3SW, A4SW, A3SW, A4SW, A3SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A-806, A-806, A-806, A-815, A10WE, A10WE, A10WE, A10WE, A26WE, A26WE, A26WE, A26WE, A26WE
On this site
Ag-Cat Corporation G-164 5 registered
Air & Space America Inc 18 6 registered
Air Tractor Inc AT-301 84 registered
Air Tractor Inc AT-401 68 registered
Ayres Corporation S-2 244 registered
Dehavilland DHC-2 254 registered
Douglas DC-3 155 registered
North American AT-6 Texan 228 registered
Schweizer Aircraft Corp G-164 64 registered
Snow 600 7 registered
Thrush Aircraft Inc S-2 102 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.