# STC ST04596CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: Envoy Aerospace LLC, United States - Description: Installation of Flight Deck Power System - Applied: March 31, 2022 - Status date: March 7, 2025 - Product: Aircraft, Large Airplane - Certification basis: Part 25 - Data sheets: [TCDS T00001SE](https://openairdocs.org/tcds/T00001SE) - Certificate PDF: https://openairdocs.org/files/sha256/bf/fd/bffd042ff7c9a8a0f6b53da75a3cdd52afd692f6cf45f63f50f5cb908b1e9039 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139240200420250312140344.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/ST04596CH ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 777-200 Series ([TCDS T00001SE](https://openairdocs.org/tcds/T00001SE)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST04596CH This certificate issued to: Envoy Aerospace, LLC 75 Executive Dr., Suite 313 Aurora, IL 60504 Part 25 of the Federal Aviation Regulations. Original Product Make: Boeing Type Certificate Number: . T00001SE Model: 777-200 Series Description of Type Design Change: Installation of Flight Deck Power System in accordance with Envoy Aerospace Master Data List, Doc. No. E22004- 2400-L001, Revision D, dated March 7, 2025, or later FAA-approved revisions. 1) This STC is applicable to all serial numbers for this Make-Model-Series. 2) The installer must determine whether this design change is compatible with previously approved modifications. 3) FAA Approved Airplane Flight Manual Supplement as identified in Envoy Aerospace Master Data List, Doc. No. E22004-2400-L001, Revision D, dated March 7, 2025, or later FAA approved revision is required on board the modified aircraft. 4) For Envoy Aerospace Master Data List, Doc. No. E22004-2400-L001, Configuration -02, prior embodiment of Envoy Aerospace Interior Reconfiguration in accordance with FAA STC ST02530CH is required. 5) For Envoy Aerospace Master Data List, Doc. No. E22004-2400-L001, Configuration -02, prior or concurrent Installation of Panasonic Avionics Corporation eX3 In-Flight Entertainment System in accordance with FAA STC ST03178NY is required. 6) 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. Date of Application: March 31, 2022 Date Reissued: Date of Issuance: . July 21, 2023 Date Amended: March 7, 2025 By Direction of the Administrator Signature: Brenda L. Litchhield ODA Administrator Title: Envoy Aerospace, LLC ODA-831240-CE This certificate may be transterred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST04596CH United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST04596CH Date Amended: March 7, 2025 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 Boeing 777-200 Series aircraft is as follows: a. The type certification basis for the Boeing 777-200 Series aircraft is shown on TCDS T00001SE for parts not changed or affected by the change. b. This certification basis for parts changed or affected by the change since the reference date of application is based upon TCDS T00001SE. Based on 14 CFR 21.115 and 21.101, and the FAA policy for significant changes in Order 8110.48, the certification basis for this modification was determined to be: Applicable regulations at the latest amendment 25-0 through 25-82 § 25.29(a)(b) § 25.609(a)(b) § 25.1353(a)(b) § 25.301 (a)(b) § 25.611 § 25.1357 (a)(c)(g) § 25.303 § 25.613(a)(b)(c)(d)(e) § 25.1431(a)(c) § 25.305(a) (b)(c) § 25.619(a)(b)(c) § 25.1501 (a)(b) § 25.307(a) § 25.625(a)(b)(c) § 25.1529 § 25.561 (a)(b)(c) § 25.1301(a)(b)(c)(d) § 25.1541(a)(b) § 25.601 § 25.1307(c) § 25.1581(a)(b)(d) § 25.603(a) (b)(c) § 25.1309(b)(d)(g) § 25.605(a) § 25.1351(a) Applicable 14 CFR Part 25 regulations at other amendment levels § 25.869(a)(4) [Amdt 25-113]; § 25.981(a)(3) [Amdt 25-125]; § 25.1585(a)(b) [Amdt 25-105]. Applicable 14 CFR Part 26 regulations at the latest amendment 26-0 through 26-7 Based on 14 CFR § 21.101(g), applicable provisions of 14 CFR Part 26 are included in the certification basis. For any future 14 CFR Part 26 amendments, the holder of this STC must demonstrate compliance with the applicable sections. As of the latest amendment date of this STC, compliance has been found for the following regulations: 14 CFR § 26.11(c) [Amdt. No. 26-7]; § 26.47(c) [Amdt. No. 26-7]. This modification does not affect or create fatigue critical baseline structure. --END ## Every issue (2) - March 7, 2025: Amended, Current. [certificate](https://openairdocs.org/files/sha256/bf/fd/bffd042ff7c9a8a0f6b53da75a3cdd52afd692f6cf45f63f50f5cb908b1e9039) - July 21, 2023: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/49/53/49539b59a8d0d93e779d9fcab8f4f1cfe17bbb229dc471bc5245c809336481b5) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.