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

SA785GL

Installation of a cooling shroud on engine driven dry air pumps. Held by Mcfarlane Aviation INC, which holds 16 approved modifications in all. Last revised November 21, 2017. System: engine.

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; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
Models
210, 210M, 210N, 210R, P210N, P210R, T210L, T210M, T210N, T210R
Type certificates
3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21
On this site
Cessna 210 Centurion 1,526 registered
Cessna P210 Pressurized Centurion 443 registered
Cessna T210 Turbo Centurion 1,284 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 7, 2026.