The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · historical · abandoned

SA1201GL

Authorize Gross Weight Increase from 1150 lbs to 1200 lbs. Held by Lawrence F. Diedrich. Last revised February 27, 2024. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Thomas Gores; Thomas Gores
Models
65-C, S-65-C
Type certificates
A-675, A-675
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.