STC SR02050SE

Number SR02050SE

This certificate, issued to: Aviation Specialties Unlimited, Inc.

4632 West Aeronca Street Boise, ID 83705

Part 27 of the Federal Aviation Regulations.

Original Product⎯Type Certificate Number: H19NM Make: MD Helicopters Model: MD900

Description of the Type Design Change: Installation of a Supplemental Lighting System; manufactured and installed in accordance with Aviation Specialties Unlimited (ASU) Master Drawing List MDL-900004-3, Rev. B, dated February 5, 2010, or later FAA approved revisions and maintained in a accordance with ASU Instructions for Continued Airworthiness ICA-900004-4 dated September 23, 2009, Rev. IR, or later FAA approved revisions.

Limitations and Conditions: This STC applies to the model listed above and only the specific serial numbers listed on the ASU Master Drawing List MDL-900004-3, Rev. B, dated February 5, 2010 or later FAA approved revisions. This rotorcraft employs Night Vision Imaging System lighting, commonly named NVIS, that has been certified to ensure the aircraft is compatible with Night Vision Goggles (NVG). For this reason, interior and exterior modification that add or change systems that emit or reflect light have the potential to later or change the NVIS lighting vs, NVG compatibility. Compatibility of this design with subsequent modifications must be determined by the installer. The determination of compatibility with modifications that emit or reflect light must include an engineering compatibility evaluation approved by an aircraft certification authority. A copy of this certificate and the FAA-approved Rotorcraft Flight Manual Supplement (RFMS) FMS-900004-6, Rev. IR, approved February 5, 2010, or later FAA approved revisions, 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: September 12, 2009 Date reissued:

Date of issuance: February 5, 2010 Date amended:

FAA FORM 8110-2-1 (10-69)

(Signature) Manager, Seattle Aircraft Certification Office (Title)