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

SA01447SE

Installation of vortex generators on the wings and horizontal tail surfaces of the above model aircraft in accordance with Drawing Package MA2201, Revision IR, dated July 28, 2004, and Installation Manual MA2202, Revision IR, dated August 16, 2004, or later FAA approved revision to either of these documents. Held by Micro Aerodynamics INC, which holds 77 approved modifications in all. Last revised September 1, 2004. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
The Cessna Aircraft Company; The Cessna Aircraft Company
Models
120, 140
Type certificates
A-768, A-768
On this site
Cessna 120 661 registered
Cessna 140 1,838 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 7, 2026.