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

SA00944AT

Installation of Vernier mixture control cable. Held by Mod Works INC, which holds 34 approved modifications in all. Last revised January 10, 1996. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Mooney Aircraft Corporation
Models
M20K, M20J, M20G, M20F, M20D, M20C, M20E
Type certificates
2A3, 2A3, 2A3, 2A3, 2A3, 2A3, 2A3
On this site
Mooney M-20 6,247 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 5, 2026.