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

SA3224SW-D

Mitchell automatic flight system AK701 consisting of Century I autopilot with optional omni tracker. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised December 7, 1983. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.
Models
Navion G, Navion H
Type certificates
A-782, A-782
On this site
Navion NAVION G 61 registered
Navion NAVION H 36 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.