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

SR04343CH

Installation of Heli-Preheat Kit, p/n TA3193-1 for 115 volt application in accordance with Heli-Preheat Kit drawing TA3193-1 Revision D, dated December 11, 2023 or later FAA approved revisions and Preheat Kit Installation Instruction TNH3193 Revision B, dated July 6, 2018 or later FAA approved revisions. Held by Hartzell Propeller LLC, which holds 3 approved modifications in all. Last revised July 11, 2024. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Erickson Incorporated DBA Erickson Air-Crane; Erickson Incorporated DBA Erickson Air-Crane
Models
S-64E, S-64F
Type certificates
H6EA, H6EA
On this site
Erickson S-64 5 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 5, 2026.