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

SA02181AK

Installation of Hartzell propeller model HC-B3TN-3AF(Y)/T10890CN-2, HC-B3TN-3AF(Y)/T10890CNK-2, and HC-B3TN-3AF(Y)/T10890CNB-2 three-bladed propeller assembly. Held by Hartzell Propeller INC, which holds 90 approved modifications in all. Last revised June 29, 2016. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.; Textron Aviation Inc.
Models
208, 208B
Type certificates
A37CE, A37CE
On this site
Cessna 208 Caravan 1,018 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 20, 2026.