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

SA1326GL

Surrendered and incorporated into STC SA00478CH. Held by Cooper Aviation Supply Company, INC., which holds 79 approved modifications in all. Last revised June 14, 2002. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.
Models
Do 228-212, Do 28D-1, Do 228-101, Do 228-200, Do 228-201, Do 228-202, Do 228-100
Type certificates
A16EU, A16EU, A16EU, A16EU, A16EU, A16EU, A16EU
On this site
Dornier DO28 7 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.