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

ST04549CH

Installation of Hartzell Propeller model 3Al-QP460A1/7SA01-2 in accordance withHartzell STC Installation Instructions\nINST-030821 (Initial Revision) dated12/16/2021 orlater FAA-approved revisions. Airplane Flight Manual Supplement AFMS-030821 (Initial Revision) dated 12/16/2021 or later FAA-approved revision isrequired. Instructions for Continued Airworthiness ICA-030821 (Initial Revision) dated 12/16/2021 or later FAA-accepted revision are applicable. Held by Hartzell Propeller INC, which holds 90 approved modifications in all. Last revised January 25, 2022. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Diamond Aircraft Industries Inc
Models
DA 40 NG
Type certificate
A47CE
On this site
Diamond Aircraft DA 40 Diamond Star 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.