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

ST00149IB

Installation of a Cabin air exhaust muffler, to reduce this noise to a more comfortable level by installing a valve cap and sound damping system. Held by Doa21 Limited (Malta). Last revised November 8, 2023. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Airbus Canada Limited Partnership
Models
BD-500-1A10
Type certificate
T00008NY
On this site
Airbus BD-500 185 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 20, 2026.