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

SH7704SW-D

Installation of Bendix/King EHSI-40 electronic HSI, Sperry ADI and deviations to the Type Certificate avionics package for IFR use in conjunction with SFIM 3-axis autopilot.Supplemental avionics include Loran C and RNAV. Held by American Eurocopter Corporation, which holds 489 approved modifications in all. Last revised June 30, 2003. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Eurocopter France
Models
AS355F2
Type certificate
H11EU
On this site
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 5, 2026.