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

SA1151NW

Installation of the Flight Grip Model 135 Control Stick Grip. Held by Air Products & Parts LLC, which holds 2 approved modifications in all. Last revised July 30, 2021. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Air Tractor Inc.; Air Tractor Inc.; Aircraft Parts & Development Corp.; Aircraft Parts & Development Corp.; Aircraft Parts & Development Corp.; 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.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; Boeing Airplane Company Wichita Division; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Lavia Argentina S.A. (Laviasa); Lavia Argentina S.A. (Laviasa); Lavia Argentina S.A. (Laviasa); Naval Aircraft Factory; Naval Aircraft Factory; Pacific Aerospace Limited; 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.; 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.; Weatherly Aircraft Company; Weatherly Aircraft Company
Models
AT-300, AT-301, A-9, A-9A, A-9B, G-164, G-164A, G-164B-15T, G-164B-20T, G-164B-34T, G-164B (with 73 inch wing gap), G-164B, G-164C, G-164D (with 73 inch wing gap), G-164D, 7GCBC, 8GCBC, 75 (Army PT-13), 188, 188A, 188B, A185F, A188, A188A, A188B, T188C, PA-25-235, PA-25-260, PA-25, N3N-1, N3N-3, FU24A-954, PA-18-105 (Special), PA-18-125 (Army L-21A), PA-18-135, PA-18-150, PA-18, PA-18A-150, PA-18A, PA-19 (Army L-18C), PA-36-285, PA-36-300, PA-36-375, 600-S-2C, 600 S-2D, S-2C, S-2R, S2R-R1340, S2R-R3S, S2R-T11, S2R-T15, S2R-T34, 201B, 201C
Type certificates
A9SW, A9SW, A-758, A4WE, A-758, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, 1A16, A-759, A21CE, A-743, A9CE, A9CE, A9CE, 3A24, A9CE, A9CE, A9CE, A9CE, 2A8, 2A8, 2A8, TC AR-2, A-2-569, A9PC, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, A9SO, A9SO, A9SO, 2A7, A3SW, 2A7, A3SW, A3SW, A3SW, A3SW, A3SW, A3SW, A10WE, A10WE
On this site
Ag-Cat Corporation G-164 5 registered
Air Tractor Inc AT-301 84 registered
American Champion Aircraft 7 Citabria and Champ 429 registered
American Champion Aircraft 8 Decathlon and Scout 669 registered
Ayres Corporation S-2 244 registered
Boeing 75 18 registered
Cessna 188 33 registered
Cessna A185 Skywagon 1,372 registered
Cessna A188 251 registered
Cessna T188 42 registered
Naval Aircraft Factory N3 145 registered
Piper PA-18 Super Cub 3,620 registered
Piper PA-19 15 registered
Piper PA-25 Pawnee 455 registered
Piper PA-36 Pawnee Brave 99 registered
Schweizer Aircraft Corp G-164 64 registered
Snow 600 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 20, 2026.