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

SA02576SE

Installation of replacement elevator spars, hinge fittings, and ribs. Held by Sterling Aviation Technologies INC., which holds 3 approved modifications in all. Last revised February 21, 2018. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation; Commander Aircraft Corporation
Models
112, 112B, 112TC, 112TCA, 114, 114A, 114B, 114TC
Type certificates
A12SO, A12SO, A12SO, A12SO, A12SO, A12SO, A12SO, A12SO
On this site
Commander Aircraft Co 114 103 registered
Rockwell International 112 207 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 12, 2026.