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

ST01101NY

Installation of Sundstrand T-20G-10C3A auxiliary power unit for ground and water use only. Held by Pats Aircraft LLC, which holds 129 approved modifications in all. Last revised March 15, 2004. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.; Bombardier Inc.
Models
CL-215-6B11 (CL-215T Variant), CL-215-6B11 (CL-415 Variant)
Type certificates
A14EA, A14EA
On this site
Bombardier CL-215 12 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 22, 2026.