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

ST01035DE

Installation of replacement aft bay Heat Exchanger Blower Fans. Held by Peregrine, which holds 43 approved modifications in all. Last revised March 25, 2021. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.
Models
4000
Type certificate
T00013WI
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 5, 2026.