# STC SR00799DE - Type: Supplemental type certificate - Status: Current, Issued - Holder: Cert Works LLC, United States - Description: Certification of Honeywell MK-XXI Helicopter Terrain Awareness and Warning System (HTAWS) - Applied: November 27, 2015 - Status date: March 16, 2016 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 27 - Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW) - Certificate PDF: https://openairdocs.org/files/sha256/a7/98/a798b469bc852a71b4f875128714e6c2d52aa1937567205ba477fb7881a31a1f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/28781513FE2F8C7B86258052007DEB08.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR00799DE ## ADs that name it (0) None. ## Approved models (1) - Bell Helicopter Textron Canada Limited 407 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SR00799DE This certificate, issued to: Cert Works, LLC. 44110 East Arkansas Place Bennett, Colorado 80102 Part 27 of the Federal Aviation Regulations. Original Product - Type Certificate Number: H2SW Make: Bell Model: 407 Description of the Type Design Change: Certification of Honeywell MK-XXI Helicopter Terrain Awareness and Warning System (HTAWS) in accordance with Cert Works Document No. CW0603-1002, Master Installation Drawing List (MIDL), Bell 407 HTAWS, Revision IR, or later FAA approved revision. Refer to the configuration control drawings listed in CW0603-1002 Section 2: Configurations for required Rotorcraft Flight Manual Supplements and Instructions for Continued Airworthiness applicable to the modification configuration. 1. The application of this STC requires previously installed and approved equipment. Refer to the STC installation data defined in CW0603-1002, Master Installation Drawing List (MIDL), Bell 407 HTAWS for equipment requirements. 2. The installer must determine whether this design change is compatible with previously approved modifications. (Limitations and Conditions continued on page 3 of 3) This certificate and the supporting data which is the bases for approval shall remain in effect until surrendered, suspended, revoked, or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Date of Application: November 27, 2015 Date Reissued: Date of Issuance: March 16, 2016 Date Amended: Signature Title Kreg R. Voorhies ODA Administrator, Cert Works ODA(AIR)-833887-NM FAA Form 8110-2 (5/14) Page 1 of 3 Transfer the ownership of Supplemental Type Certificate Number: SR00799DE To (Name and address of transferee) From (Name and address of grantor) FAA Form 8110-2 (5/14) Page 2 of 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SR00799DE Date of Issuance: March 14, 2016 3. 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. Certification Basis: Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Bell 407 installation of Honeywell MK-XXI Helicopter Terrain Awareness and Warning System (HTAWS) Certification is as follows: a. The type certification basis for Bell 407 helicopter is shown on TCDS H2SW for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference date of application, November 27, 2015, is based upon 14 CFR Part 27, dated October 2, 1964 Amendment 27-1 through 27-30. Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this modification was determined to be: Regulations at the TCDS Certification Basis (Part 27, Amendments 27-1 through 27-30): 14 CFR Sections: 27.771(a),(b) Amdt. - ; 27.773(a)(1),(b) Amdt. - ; 27.777 Amdt. - ; 27.1301 Amdt. - ; 27.1309(a),(c) Amdt. 27-21; 27.1321(a),(d) Amdt. 27-13; 27.1322 Amdt. 27-11; 27.1529 Amdt. 27-18; 27.1541 Amdt. - ; 27.1581 Amdt. 27-14; 27.1585(a) Amdt. 27-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - END- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FAA Form 8110-2 (5/14) Page 3 of 3 ## Every issue (1) - March 16, 2016: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a7/98/a798b469bc852a71b4f875128714e6c2d52aa1937567205ba477fb7881a31a1f) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). 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