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

SA393GL

Installation of Great Lakes Aero windshield, P/N W-2065, W/T-2065, W/G-2065. Held by Great Lakes Aero Products INC, which holds 19 approved modifications in all. Last revised August 26, 2008. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
Models
210-5 (205), 210-5A (205A), 210B, 210C, 210D, 210E
Type certificates
3A21, 3A21, 3A21, 3A21, 3A21, 3A21
On this site
Cessna 210 Centurion 1,527 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 12, 2026.