# STC SA04458AT - Type: Supplemental type certificate - Status: Current, Issued - Holder: PMA Design & Manufacturing Inc., United States - Description: Installation of the PMA Design and Manufacturing nose landing gear (NLG) shock strut assembly - Applied: December 15, 2017 - Status date: September 12, 2019 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21, Part 23 - Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA) - Certificate PDF: https://openairdocs.org/files/sha256/47/a2/47a2a73f887e166df794df6170a23c2ed989c0dd7c15d56d2589cdbf31b1cee9 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4B39CB1B08EF844F862585D10052EE69.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04458AT ## ADs that name it (0) None. ## Approved models (4) - Viking Air Limited DHC-6-100 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) - Viking Air Limited DHC-6-200 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) - Viking Air Limited DHC-6-300 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) - Viking Air Limited DHC-6-400 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) ## 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 This cer tificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47. The STC’s supporting documentation (drawings, instructions, spe cifications, flight manual supplements, etc.) is the property of the ST C holder. FAA Form 8110-2 (5/14) Page 1 of 3 Number: SA04458AT This certificate issued to: PMA Design and Manufacturing, Inc. 8493 Baymeadows Way Jacksonville, FL 32256 Part 3 of the Civil Air Regulations. Original Product – Type Certificate Number: A9EA Make: Viking Air Limited Model: DHC-6-100, -200, -300, -400 Series Description of Type Design Change: Installation of the PMA Design and Manufacturing nose landing gear (NLG) shock strut assembly, PDM71-300-STC, as a direct replacement for the original equipment manufacturer (OEM) NLG shock strut assembly in accordance with Master Document List, PDM-MDL100, Revision C, dated April 15, 2019 or later FAA-approved revisions. Limitations and Conditions: The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. (Limitations and Conditions continued on page 3 of 3) This certificate and the supporting data which are the basis 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: December 15, 2017 Date Reissued: Date of Issuance: September 12, 2019 Date Amended: Signature Title Christina M. Underwood, AIR-7A0 Manager, Atlanta ACO Branch United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute righ ts to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder. FAA Form 8110-2 (5/14) Page 2 of 3 Transfer the ownership of Supplemental Type Certificate Number: SA04458AT To (Name and address of transferee) From (Name and address of grantor) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA04458AT Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute righ ts to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder. FAA Form 8110-2 (5/14) Page 3 of 3 Date of Issuance: September 12, 2019 Date Amended: Instructions for Continued Airworthiness (ICA), PMA Design and Manufacturing Document Number, PDM-ICA107, Revision B, dated April 15, 2019, or later FAA accepted revision must be made available to the operator at the time of installation. 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 Viking Air Limited DHC-6-100, -200, -300, -400 series airplanes is as follows: a. The type certification basis for Viking Air Limited DHC-6-100, -200, -300, -400 airplanes is shown on TCDS A9EA 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, December 15, 2017, is based upon CAR 3 dated May 15, 1956 and Amendments 3-1 to 3-8 inclusive. 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 latest amendment 23-64 None. Regulations at an intermediate amendment level None. Regulations at the amendment level in TCDS A9EA CAR 3.171, 3.172, 3.173, 3.174, 3.241, 3.242, 3.243, 3.244, 3.245, 3.253, 3.254, 3.255, 3.256, 3.291, 3.292, 3.293, 3.294, 3.295, 3.296, 3.301, 3.307, 3.351, 3.352, 3.353, 3.354, 3.355. 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. --------------------------END--------------------------- ## Every issue (1) - September 12, 2019: Issued, Current. [certificate](https://openairdocs.org/files/sha256/47/a2/47a2a73f887e166df794df6170a23c2ed989c0dd7c15d56d2589cdbf31b1cee9) --- From OpenAirDocs.org, an independent open copy of FAA and NTSB data. 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