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

SA2582NM

Installation of later McCauley Model D3A34C402/90DFA-10 constant speed propeller. Held by American Propeller Service, which holds 8 approved modifications in all. Last revised July 10, 1985. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
Models
T210F, T210G, T210H, T210J, T210L, T210K
Type certificates
3A21, 3A21, 3A21, 3A21, 3A21, 3A21
On this site
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.