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

SR02015NY

Installation of a revised Electrical Power Control and Distribution System. Held by Heli-Lynx Helicopter Services INC (Canada), which holds 12 approved modifications in all. Last revised October 21, 2004. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Eurocopter France; Eurocopter France
Models
AS355F1, AS355F2
Type certificates
H11EU, H11EU
On this site
Aerospatiale AS-355 23 registered
Airbus Helicopters AS355 TwinStar 6 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 8, 2026.