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

SR04170NY

Installation of the Helicopter Film Works Inc Mount Assemblies. Held by Helicopter Film Works INC (Canada), which holds 2 approved modifications in all. Last revised September 12, 2018. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
MD Helicopters Inc.; MD Helicopters Inc.; MD Helicopters Inc.; MD Helicopters Inc.
Models
369D, 369E, 369F, 369FF
Type certificates
H3WE, H3WE, H3WE, H3WE
On this site
Md Helicopters Inc 369 108 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 21, 2026.