STC SR00681SE

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SR00681SE Onboard Systems International, LLC 13915 NW 3rd Court Vancouver, WA 98685 Part 7 the Civil Air Regulations 1H15 Sikorsky Aircraft S-61N, S-61N Fabrication of Onboard Systems Model 200-243-00 or 200-243-01 Cargo Hook Load Weigh System in accordance with FAA approved Onboard Systems Master Drawing List No. 155-046-00, Revision 14, dated April 5, 2010, or later FAA approved revision; and Installation of this cargo hook load weigh system in accordance with FAA approved Onboard Systems Owner’s Manual No. 120-082-00, Revision 9, dated March 29, 2010, or later FAA approved revision. Inspect this cargo hook load weigh system in accordance with Section 4 of Onboard Systems Owner’s Manual No. 120-082-00, Revision 9, dated March 29, 2010, or later FAA approved revision.

Approval of this change in type design applies only to those Sikorsky Model S-61N rotorcraft equipped with an FAA approved installation of cargo hook Model No. SP-7102-1 (Breeze Eastern) or 6111 (Mechanical Specialties, Inc.) installed in accordance with external load suspension Supplemental Type Certificates No. SR00427SE (Helipro), SH5125NM (Croman), or SH639NE (Carson) or Sikorsky model S-61L rotorcraft equipped with a Carson Helicopters external load suspension installed per Carson Cargo Sling Install drawing no.

S61 L-1000. 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 any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. Modified rotorcraft must be operated in accordance with a copy of an FAA approved Onboard Rotorcraft Flight Manual Supplement (RFMS) No.

121-056-00, revision 1, dated July 15, 2011, or later FAA approved revision. A copy of this Certificate and FAA approved RFMS must be maintained as part of the permanent records of the modified rotorcraft.

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.

January 12, 1999 October 7, 2021 January 13, 2003; June 21, 2010; July 01, 2010 For Acting Manager, Seattle ACO Branch 2 March 9, 1999

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SR00681SE 2