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

SA126SO

Installation of wing fabric attachment clips. Held by Arbor Company, which holds 5 approved modifications in all. Last revised June 3, 1991. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
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.
Models
PA-16, PA-16S, PA-18S-\"135\", PA-18, PA-18A, PA-18S, PA-19S, PA-18-\"125\" (Army L-21A), PA-20S-\"115\", PA-20S-\"135\", PA-20, PA-22, PA-22S-135, PA-22S-150, PA-22S-160, PA-25 (Normal Cat.), J3C-65S, PA-11, J4, J4A-S, PA-12S, PA-12, PA-14, PA-15, J-3
Type certificates
1A1, 1A1, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A4, 1A4, 1A4, 1A6, 1A6, 1A6, 1A6, 2A8, A-691, A-691, A-703, A-703, A-780, A-780, A-797, A-800, ATC 660
On this site
Piper/Cub Crafters PA-18 46 registered
Piper J-3 Cub 3,806 registered
Piper J4 Cub Coupe 197 registered
Piper PA-11 Cub Special 443 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-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-25 Pawnee 455 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.