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

SH426NE

Installation of Garrett environmental control unit. Held by Mbb Helicopter CORP, which holds 2 approved modifications in all. Last revised March 21, 1986. System: heating, ice protection and utility systems.

What it applies to

Kind of product
Aircraft
Design holder
Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH
Models
MBB-BK 117 A-3, MBB-BK 117 A-1
Type certificates
H13EU, H13EU
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 12, 2026.