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

SA00158SE

Installation of Hartzell HC-C3YR-1RF/F7282 PROPELLER, Hartzell propeller govenor P/N F2-7A/3949W, and Hartzell spinner P/N A2295-1P. Held by Steve Tubbs. Last revised November 22, 1994. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company
Models
170B
Type certificate
A-799
On this site
Cessna 170 2,085 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 22, 2026.