STC SH5224NM

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SH5224NM

Date of application: March 11, 1991 Date reissued: November 24, 2014 Date of issuance: August 26, 1991 Date amended: May 21, 1998

Todd Dixon (Signature) Manager, Denver Aircraft Certification Office Northwest Mountain Region (Title)

This certificate, issued to Air Comm Corporation 1575 West 124th Ave Westminster, CO 80234 Title 14, Part 29 of the Code of Federal Regulations.

Original ProductType Certificate Number: H1NE Make: Sikorsky Aircraft Model: S-76A, S-76B, S-76C Description of the Type Design Change:

Installation of a Cabin Ventilation System in accordance with Air Comm Corporation Master Drawing List DL– S76V, Rev B, FAA Approved August 26, 1991 or later FAA approved revision.

1. FAA Approved Flight Manual Supplement dated August 26, 1991 or later FAA approved revision is required.

2. Approval of this change in type design applies to the model of aircraft listed above only.

3. Compatibility of this design change with previously approved alterations must be determined by the installer.

4. 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.

5. A copy of this certificate and the appropriate flight manual supplement as listed above must be maintained as part of the permanent record for the altered aircraft.