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

SA02648AT

Installation of Lycoming model O-360-A4M engine, McCauley model 1A200/DFA8242 propeller, two oil coolers, engine exhaust system, four NACA scoops for cabin and oil cooler ram air and a triple banner tow/release mechanism. Limited to installation on Cessna 175, serial number 55238 ONLY. Held by Bruckner William M. JR.. Last revised April 1, 2003. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
The Cessna Aircraft Company
Models
175
Type certificate
3A17
On this site
Cessna 175 Skylark 925 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.