STC ST04417AT

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder.

FAA Form 8110-2 (5/14) Page 1 of 3

Number: ST04417AT

This certificate issued to: Quiet Technology Aerospace 2100 N 29th Terrace Hollywood, FL 33020

Part 25 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: Make: Bombardier, Inc.

T00005NY Model: BD-100-1A10 (Challenger 300/Challenger 350)

Replacement of the inner aluminum barrel of the engine inlet cowl with a Quiet Technology Aerospace inlet barrel of carbon graphite sandwich construction in accordance with Quiet Technology Aerospace document “Challenger 300/350 Series Inlet Cowl Inner Barrel Replacement Master Drawing List,” Report No. QTA 6301, Rev. IR, dated December 1, 2017, and “Bombardier Challenger 300/350 Inlet Cowl Inner Barrel Replacement Assemble Procedure,” Report No. QTA 6305, Rev. IR, dated November 15, 2017, or later FAA approved revisions.

The following Quiet Technology Aerospace documents are required with this installation: “Challenger 300/350 Inlet Cowl Inner Barrel Replacement Instructions for Continued Airworthiness,” QTA Ref. No. QTA 6306, Revision IR, dated November 16, 2017 and “Structural Repair Manual for the Bombardier Challenger 300 and 350 Modified Nose Cowl Part Number CH3-NC- 6300,” Report No. QTA-6307, Rev. IR, dated November 17, 2017, or later FAA approved revisions. This modification has been determined by the FAA to be no acoustical change per 14 CFR §21.93(b).

1. The installer must determine whether this design change is compatible with previously approved modifications.

(Limitations and Conditions continued on Page 3 of 3)

Date of Application: December 28, 2015 Date Reissued:

Date of Issuance: January 19, 2018 Date Amended:

Signature

Title Christina M. Underwood Manager, Atlanta ACO Branch

FAA Form 8110-2 (5/14) Page 2 of 3

Transfer the ownership of Supplemental Type Certificate Number: ST04417AT

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST04417NY

FAA Form 8110-2 (5/14) Page 3 of 3

Date of Issuance: January 19, 2018 Date Amended:

2. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

3. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Certification Basis:

Based on 14 CFR § 21.115 and § 21.101, and the FAA policy for changes that are not significant in FAA Order 8110.48, the certification basis for this modification are as follows:

a. The type certification basis for the Bombardier, Inc. model BD-100-1A10 (Challenger 300/Challenger 350) aircraft is shown on TCDS No. T00005NY for parts not changed or not affected by the change.

b. The type certification basis for the Bombardier, Inc. model BD-100-1A10 (Challenger 300/Challenger 350) aircraft is shown on TCDS No. T00005NY for parts changed or affected by the change.

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