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

SA199GL

Installation of oil filter between engine oil gallery and propeller governor/nose case tappet rocker arm supply. Held by Barron Aviation, which holds 5 approved modifications in all. Last revised January 29, 2007. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company
Models
195
Type certificate
A-790
On this site
Cessna 195 437 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.