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

SR00631DE-D

Installation of an AKV, Inc. Dual Engine Cycle Counter. Held by Akv INC., which holds 8 approved modifications in all. Last revised February 28, 2013. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter Deutschland GmbH; Eurocopter France; Eurocopter France; Eurocopter France
Models
MBB-BK 117 A-1, MBB-BK 117 A-3, MBB-BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, MBB-BK 117 C-1, MBB-BK 117 C-2, AS332C, AS332L, AS332L1
Type certificates
H13EU, H13EU, H13EU, H13EU, H13EU, H13EU, H13EU, H4EU, H4EU, H4EU
On this site
Airbus Helicopters AS332 8 registered
Airbus Helicopters MBB-BK 117 C-1 9 registered
Airbus Helicopters MBB-BK 117 C-2 158 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 7, 2026.