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

ST02540AK

Fabrication and installation of Aero Twin, Inc., Rudder Gust Lock Kit No. 4111-212. Held by Aero Twin INC, which holds 28 approved modifications in all. Last revised September 8, 2020. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Airbus Defense and Space S.A.; Airbus Defense and Space S.A.; Airbus Defense and Space S.A.; Airbus Defense and Space S.A.; Airbus Defense and Space S.A.; Airbus Defense and Space S.A.; Airbus Defense and Space S.A.
Models
C-212-CB, C-212-CC, C-212-CD, C-212-CE, C-212-CF, C-212-DE, C-212-DF
Type certificates
A43EU, A43EU, A43EU, A43EU, A43EU, A43EU, A43EU
On this site
Construcciones Aeronauticas Sa C-212 16 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.