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

SA1745SO

Installation of Appalachian Access. stainless steel brake rotors, P/N 75-20. Held by Aviation Products, INC, which holds 64 approved modifications in all. Last revised February 6, 1995. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Booth Lee F. dba Taylorcraft Aerospace; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC; Tiger Aircraft LLC
Models
F19, M20E, M20F, M20C, M20K, M20G, M20J, M22, PA-28 Series, PA-28R Series, AA-1B, AA-1A, AA-1, AA-5A, AA-5B, AA-5
Type certificates
1A9, 2A3, 2A3, 2A3, 2A3, 2A3, 2A3, A6SW, 2A13, 2A13, A11EA, A11EA, A11EA, A16EA, A16EA, A16EA
On this site
Mooney M-20 6,247 registered
Mooney M22 14 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,637 registered
Taylorcraft Aviation Corp F19 85 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 21, 2026.