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

SA01636SE

Manufacture of Alaskan Bushwheel tail wheel and fork assembly. Held by Abi, LLC, which holds 5 approved modifications in all. Last revised March 13, 2014. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Found Aircraft Canada Inc.; Found Aircraft Canada Inc.
Models
180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K, 185, 185A, 185B, 185C, 185D, 185E, 188, 188A, 188B, A185E, A185F, A188, A188B, T188C, FBA-2C, FBA-2C1
Type certificates
5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, A9CE, A9CE, A9CE, 3A24, 3A24, A9CE, A9CE, A9CE, A7EA, A7EA
On this site
Cessna 180 Skywagon 2,605 registered
Cessna 185 Skywagon 227 registered
Cessna 188 33 registered
Cessna A185 Skywagon 1,372 registered
Cessna A188 251 registered
Cessna T188 42 registered
Found Acft Canada Inc FBA-2 19 registered
Found Aircraft Canada Inc FBA-2 12 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.