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

SA02563AK

Installation of Custom Air Innovations Titanium Tail Wheel and Assembly. Held by Custom Air Innovations LLC. Last revised September 9, 2022. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.; Thrush Aircraft LLC.
Models
S2R, S2R-R1340, S2R-R3S, S2R-T11, S2R-T15, S2R-T34, S2R, S2R-H80, S2R-R1340, S2R-R3S, S2R-T11, S2R-T15, S2R-T34
Type certificates
A3SW, A3SW, A3SW, A3SW, A3SW, A3SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW
On this site
Ayres Corporation S-2 244 registered
Thrush Aircraft Inc S-2 102 registered
Thrush Aircraft Llc S2 52 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.