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

ST04265AT

Replacement of the inner aluminum barrel of the engine inlet cowl, with an inlet barrel of carbon graphite sandwich construction. Held by Quiet Technology Aerospace, which holds 11 approved modifications in all. Last revised December 4, 2019. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.
Models
Hawker 1000
Type certificate
A3EU
On this site
Raytheon Corporate Jets Inc HAWKER 1000 8 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.