STC SR02692SE

Number SR02692SE

This certificate, issued to Croman Corporation 801 Avenue C White City, OR 97503

Part 21.25 of the Federal Aviation Regulations.

Original ProductType Certificate Number: H2EA Make: Sikorsky Model: S-61A

Description of the Type Design Change: Installation of T58-GE-402 engines in accordance with Master Drawing List for Sikorsky S-61A Helicopters equipped with Croman Corporation T58-GE-402 Engines, CC2474, Revision IR, dated May 22, 2020 or later FAA-approved revision. Maintained in accordance with S-61A Helicopter GE T58-402 Engine Installation Instructions for Continued Airworthiness (ICA), S-61A T58-402, Revision IR, dated April 15, 2020 or later FAA-accepted revision. Operated in accordance with the Rotorcraft Flight Manual Supplement (RFMS) for Sikorsky S-61A Helicopters Equipped with Two (2) T58-GE-402 Engines with Croman Corporation Minimum Power Schedule, RFMS-S61A-4, Revision IR, dated June 17, 2020 or later FAA-approved revision.

Limitations and Conditions: Approval of this change in type design applies to the rotorcraft listed above. This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and other previously approved modifications will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this certificate FAA-approved RFMS, and FAA-accepted ICA, must be maintained as part of the permanent records for the modified aircraft.

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

Date of application: February 24, 2020 Date reissued Date of issuance: June 24, 2020 Date amended

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

For Acting Manager, Seattle ACO Branch (Title)

Transfer the ownership of Supplemental Type Certificate Number

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from (Name of Grantor) (Print or Type)

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Signature of Grantor (In Ink):

U.S. GPO: 1987-763-289