# STC ST04817NY - Type: Supplemental type certificate - Status: Current, Issued - Holder: ALOFT AeroArchitects, United States - Description: Replacement of OEM Standard 44 amp-hour batteries - Applied: March 28, 2025 - Status date: September 4, 2026 - Product: Aircraft, Large Airplane - Certification basis: Part 25 - Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA) - Certificate PDF: https://openairdocs.org/files/sha256/17/de/17de5ce8b586d708f4f5a5407a5e32f60474a99bebe59047be0171ef64a90e17 - Approved model list and other attachments: [ST04817NY_AML.pdf](https://openairdocs.org/files/sha256/35/15/35159c03afe3e45819b710435ea6901f6e6799c46e4b2d99dc4ade1dd4344be5) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146796915920260930155328.0001 - DRS record last changed: September 30, 2026 - Page: https://openairdocs.org/stc/ST04817NY ## ADs that name it (0) None. ## Approved models (4) - Gulfstream Aerospace Corporation G-IV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) - Gulfstream Aerospace Corporation GIV-X ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) - Gulfstream Aerospace Corporation GV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) - Gulfstream Aerospace Corporation GV-SP ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. VIATION United States of America Department of Transportation Federal Aviation Administration TRMLSTRATOS Supplemental Type Certificate Number: ST04817NY This certificate issued to: ALOFT AeroArchitects 21652 Nanticoke Ave Georgetown, DE 19947 25 of Federal Aviation Regulations. Type Certificate Number: . A12EA Original Product Make: Gulfstream Aerospace Corporation *See attached FAA Approved Model List (AML) No. STO4817NY for Model: list of approved aiplane models and applicable ainvorthiness Description of Type Design Change: regulations 1) Replacement of OEM standard 44 amp-hour batteries on aircraft listed in Approved Model List (AML) No. ST04817NY. See continuation sheet 3 through end. 1) This STC is only valid for aircraft listed in Approved Model List (AML) No. ST04817NY. See continuation sheet 3 through end. Date of Application: March 28, 2025 Date Reissued: NA Date of Issuance: September 4, 2026 Date Amended: NA By Direction of the Administrator Signature: R. pave ODA Administrator Title: ODA-955292-NE Possession of this Supplemental Type Carlificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. United States of America Department of Transportation Federal Aviation Administration PAUSTRATE Supplemental Type Certificate Number: ST04817NY From (Name and address of grantor); Date of transfer. The STC's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder, FAA Form 8110-2 (03/21) Page 2 of 3 AVIATION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST04817NY Effective Date: September 04, 2026 Description of Type Design Change: (continued) 2) ICA. The aircraft must be maintained in accordance with Instructions for Continued Airworthiness (ICAW) listed on FAA Approved Model List (AML) No. ST04817NY. 3) AFMS. Comply with Airplane Flight Manual Supplement (AFMS) listed on FAA Approved Model List (AML) No. ST04817NY. Limitations and Conditions: (continued) 2) 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. 3) The installer must determine whether this design change is compatible with previously approved modifications. Certification Basis: 1. Based on 14 CFR §§ 21.101 and 21.115, and the FAA policy for non-significant changes in FAA Order 8110.48A, the certification basis for this design change modification is as follows: a. The type certification basis for this aircraft is shown on Type Certificate Data Sheet (TCDS); see Approved Model List (AML) No. ST04817NY for parts not altered or affected by the design change. b. The certification basis for parts altered or affected by the design change since the reference date of project application is based upon 14 CFR §§ Part 25 as amended through the TCDS and Amendment listed in the Approved Model List (AML) No. ST04817NY. c. Regulations above the amendment level in TCDS (*= latest): 14 CFR §§ See Approved Model List (AML) No. ST04817NY. --END-- This (Ref. 14 CFR 21,55). ### ST04817NY_AML.pdf This is OCR from the scanned FAA attachment. OCR can misread letters and numbers. AML Reissue or STC Amendment Date (s) N/A N/A N/A N/A Initial Approve Date 09/04/2026 09/04/2026 09/04/2026 09/04/2026 ALOFT AeroArchitects - Replacement of OEM Standard 44 amp-hour Batteries Notes T, 1, 2, 3, 4 T, 1, 2, 3,4 T, 1, 2, 3, 4 T, 1, 2, 3,4 FAA-Approved Model List (AML) No. ST04817NY Flight Manual Supplement Instructions for Continued Airworthiness AFMS-8589-P378-001 Rev TM-8589-ICAW A dated 03/06/2026 Rev IR dated 03/20/2026 AFMS-8589-P378-001 Rev TM-8589-ICAW A dated 03/06/2026 Rev IR dated 03/20/2026 AFMS-8589-P378-001 Rev TM-8589-ICAW A dated 03/06/2026 Rev IR dated 03/20/2026 AFM5-8589-P378-001 Rev TM-8589-ICAW A dated 03/06/2026 Rev IR dated 03/20/2026 Continued on Next Sheet Configuration Matrix N/A N/A N/A N/A Page 1 of 2 Master Document List(s) / Installation Data 8589-0001-MDL Rev B dated 08/24/2026 (Installation) 8589-0001-MDL Rev B dated 08/24/2026 (Installation) 8589-0001-MDL Rev B dated 08/24/2026 (Installation) 8589-0001-MDL Rev B dated 08/24/2026 (Installation) TCDS A12EA Rev 53 A12EA Rev 53 A12EA Rev 53 A12EA Rev 53 Cert Basis & Amendments Amendments 25- 1 through 25-56 See note 3. Amendments 25- 1 through 25-81 See note 3. Amendments 25- 1 through 25-98 See note 3. Amendments 25- 1 through 25-101 See note 3. Model / Series G-IV GV GV-SP GIV-X Make Gulfstream Aerospace Corporation Gulfstream Aerospace Corporation Gulfstream Aerospace Corporation Gulfstream Aerospace Corporation Item FAA-Approved Model List (AML) No. ST04817NY ALOFT AeroArchitects - Replacement of OEM Standard 44 amp-hour Batteries R. Shawn Davis STC Administrator ODA-955292-NE 09/04/2026 with original STC Date of STC Application: 03/28/2025 N/A 1. Provide Installation Master Data List (MDL), Instructions for Continued Airworthiness (ICAW) and Airplane Flight Manual Supplement (AFMS) to installer. 2. Or later FAA-approved revisions, pertains to Master Data Lists, Aircraft Flight Manual Supplement (AFMS). Or later FAA accepted revisions, pertains to Instructions for Continued a. Compliance shown to following regulations at TCDS amendment level (with the exceptions noted below): 25.29*, 25.301, 25.303, 25.305**, 25.307*, 25.601, 25.603, 25.605, 25.609, 25.611, 25.613*, 25.625*, 25.831, 25.863, 25.869***, 25.901, 25.903****, 25.1301, 25.1309***, 25.1316**, 25.1317***, 25.1322, 25.1351*, 25.1353, *Compliance shown to following regulations above TCDS amendment level for G-IV: 25.29 [25-72], 25.307 [25-72], 25.613 [27-72], 25.625 [25-72], 25.1531 [25-72]. **Compliance shown to following regulations above TCDS amendment level for G-IV, GV: 25.305 [25-86], 25.1316 [25-80]. ***Compliance shown to following regulations above TCDS amendment level for G-IV, GV, GV-SP, GIV-X, GIV-X: 25.869 [25-113], 25.1309 [25-123], 25.1317 [25-122] ****Compliance shown to following regulations above TCDS amendment level for G-IV, GV, GV-SP: 25.903 [25-100]. Special Condition: The applicant has complied with Special Condition 25-888-SC effective date April 16, 2026 for Installation of a main ship rechargeable lithium battery. Page 2 of 2 Model specific notes: T- Transport, U -Utility, N- Acrobatic, SUR-Surrendered, FAA Approved: SUS- Suspended, REV-Revoked. Date Issued: Date(s) Reissued: General Notes: Airworthiness (ICA), and or Electrical Wiring Interconnection System (EWIS) ICA. 3. Certification Basis: TCDS A12EA 25.1431, 25.1501, 25.1525, 25.1529, H25.2, H25.4. ## Every issue (1) - September 4, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/17/de/17de5ce8b586d708f4f5a5407a5e32f60474a99bebe59047be0171ef64a90e17), [ST04817NY_AML.pdf](https://openairdocs.org/files/sha256/35/15/35159c03afe3e45819b710435ea6901f6e6799c46e4b2d99dc4ade1dd4344be5) --- 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.