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

ST02291AK-A

Fabrication and installation of a Tail Wheel Anti-Shimmy Dampener. Held by Keller Engineering Group LLC, which holds 2 approved modifications in all. Last revised September 16, 2021. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
AeroSedan, LLC; American Champion Aircraft Corp.; Aviat Aircraft Inc; Cub Crafters, Inc.; FS 2000 Corp.; FS 2001 Corp.; FS 2002 Corp.; FS 2003 Corp.; Luscombe Aircraft Corporation; Maule Aerospace Technology, Inc.; Pacific Aerospace Ltd; Piper Aircraft, Inc.; STOL Aviation LLC; Taylorcraft 2000, LLC; Taylorcraft, Inc.; Textron Aviation Inc.; Univair Aircraft Corporation
Models
15AC, S15AC, American Champion Aircraft Corp.\7AC, American Champion Aircraft Corp.\7ACA, American Champion Aircraft Corp.\7BCM (Army L-16A), American Champion Aircraft Corp.\7CCM (Army L-16B), American Champion Aircraft Corp.\7DC, American Champion Aircraft Corp.\7EC, American Champion Aircraft Corp.\7ECA, American Champion Aircraft Corp.\7FC, American Champion Aircraft Corp.\7GC, American Champion Aircraft Corp.\7GCA, American Champion Aircraft Corp.\7GCAA, American Champion Aircraft Corp.\7GCB, American Champion Aircraft Corp.\7GCBA, American Champion Aircraft Corp.\7GCBC, American...
Type certificates
A-802, A-802, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-759, A-761, A-761, A-761, A-761, A-796, A-796, A21CE, A21CE, A22NM, A22NM, A22NM, A22NM, A22NM, A8SO, A8SO, A8SO, A8SO, A8SO, A8SO, A8SO, A00053SE, A00053SE, A00057SE, 760, A-725, A-725, A-725, A-725, A-725, A-725, A-797, A-780, A-780, A-694, A-694, A-694, A-694, A-694, A-694, A-694, A-694, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, 3A23, A7EA, A7EA, A7EA, A7EA, A7EA, 1A1, 1A1, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, A-691, A-691, A-691, A-691, A-691, A-691, A-691, A-692, A-692, A-692, A-692, A-692, A-692, A-698, A-698, A-698, A-698, A-703, A-703, A-703, A-740, A-800, A-805, AR-7, AR-7, AR-7, A-754, A-754, 1A9, 1A9, 1A9, 1A9, 1A9, 1A9, 1A9, 1A9, 1A9, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-696, A-699, A-699, A-699, A-699, A-699, A-699, A-699, A-699, A-700, A-700, A-700, A-700, A-700, A-700, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A17, 3A17, 3A17, 3A17, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, A-768, A-768, A-799, A-799, A-799, A9CE, A9CE, A9CE, A9CE, A9CE, A9CE, A9CE, A-767, A-767, A-767, A-767, A-767
On this site
Aeronca S15 13 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 8, 2026.