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

SR12508IB

Installation of Personnel Carrying Devices (PCDs) for Human External Cargo (HEC). Held by Ascent Aerospace LTD. (Canada), which holds 5 approved modifications in all. Last revised September 23, 2026. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Airbus Helicopters Deutschland GmbH (AHD); Bell Textron Inc.; Bell Helicopter Textron Inc.
Models
MBB-BK 117 D-3, 205A-1, 212
Type certificates
H13EU, H1SW, H4SW
On this site
Airbus Helicopters MBB-BK117 D-3 93 registered
Bell 205 58 registered
Bell 212 59 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.