STC SH161WE

Part 6 of the Civil Air R egulations.

(See page 3 for complete certification basis).

Original Product --Type Certificate N umber :

Installation of exhaust muffler assembly in accordance with FAA sealed Aircraft Technical Service, Inc. /A & H Welding Company Drawing Summary 1446, Change “C” or later FAA approved revision.

Limitations and Condition s:

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the A dministrator of the F ederal A viation A dministration.

Scott’s-Bell 47, Inc.

100 Minnesota Avenue Le Sueur, MN 56058

2H3 M ake : Bell Helicopter Textron M odel : 47G-2, 47G-2A, 47G-2A-1, 47G-5, 47G-5A Date of application : August 15, 1973

Date of issuance : October 25, 1973 Date reissued : 12/12/95; 4/10/97; 4/30/04; 12/15/10; 8/7/14

B y direction of the A dministrator

Original Signed By:

Karol Mordasiewicz (Signature) Karol Mordasiewicz Manager, Airframe and Administrative Branch Chicago Aircraft Certification Office

(Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 3 PAGES

N umber SH161WE

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

Number SH161WE Date of Issuance: October 25, 1973 Date of Reissuance: August 7, 2014 Limitations and Conditions (Continued) :

1. The approval of this change in type design applies basically to the Bell Helicopter models listed herein and should not be extended to other specific helicopters of these models on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those previously approved modifications will introduce no adverse effect upon the airworthiness of that helicopter.

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

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