# STC SR04548CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: Appareo Systems, United States - Description: Installation of Appareo Systems AIRS-400 Flight Monitoring System - Applied: April 14, 2021 - Status date: May 29, 2024 - Product: Aircraft, Rotorcraft - Certification basis: Part 27 - Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW), [TCDS H9EU](https://openairdocs.org/tcds/H9EU) - Certificate PDF: https://openairdocs.org/files/sha256/5b/1f/5b1f20e1b41169e623bf74cd6b58e2af0c0d1690ef2eb9c8be62056d7a8d3597 - Approved model list and other attachments: [SR04548CH_AML.pdf](https://openairdocs.org/files/sha256/c5/6a/c56aeb5e9b3107a5093746b375872b755cc4ff9f9f26e7de83d9bd9436dd0846) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID172132986320240712141519.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR04548CH ## ADs that name it (0) None. ## Approved models (10) - Airbus Helicopters AS350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS350B1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS350B2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS350B3 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Airbus Helicopters AS350BA ([TCDS H9EU](https://openairdocs.org/tcds/H9EU)) - Bell Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Textron Canada Limited 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Textron Canada Limited 206L-3 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell Textron Canada Limited 206L-4 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW)) - Bell 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. SR04548CH Appareo Systems 1810 NDSU Research Circle North Fargo, ND 58102 * * * * * See attached FAA Approved Model List (AML) SR04548CH for list of approved airplane models and applicable airworthiness regulations. Installation of Appareo Systems AIRS-400 Flight Monitoring System in accordance with Appareo Systems Master Drawing List (MDL) as listed on AML No. SR04548CH. 1. A copy of this certificate and the FAA Approved Model List (AML) No. SR04548CH must be maintained as part of the permanent records of the modified aircraft. April 14, 2021 January 11, 2022 Steven L. Lardinois Manager, Systems Section Chicago ACO Branch 3 SR04548CH 3 SR04548CH Date Issued: January 11, 2022 (Continued from sheet 1 "Limitations and Conditions") 2. Appareo Systems Rotorcraft Flight Manual Supplement, as listed on AML SR04548CH, is required with this installation. 3. The installer must determine whether this design change is compatible with previously approved modifications. 4. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission. ---------------------- END --------------------- 3 3 ### SR04548CH_AML.pdf FAA APPROVED MODEL LIST (AML) NO. SR04548CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS AIRS-400 FLIGHT MONITORING SYSTEM Issue Date: January 13, 2022 Page 1 of 2 **INSTALLATION** **INSTRUCTIONS** **ITEM** **AIRCRAFT MAKE** **AIRCRAFT MODEL** **ORIGINAL TYPE** **CERTIFICATE NUMBER** **CERTIFICATION BASIS FOR** **ALTERATION** **MASTER** **DOCUMENT LIST** **REVISION NO.** **AND DATE** RFM **SUPPLEMENT** **NUMBER/DATE** AML AMENDMENT DATE 1 Airbus Helicopters AS350B, B1, B2, BA, B3 H9EU Rev 26 See Appendix A Appareo Systems 606586-000123 Revision 2.0 dated May 2, 2024* 606586-000124 Revision 1.0 dated November 30, 2021 * May 29, 2024 2 Bell Helicopters 206B, L-1, L-3, L-4, 407 H2SW Rev 51 See Appendix A Appareo Systems 606586-000123 Revision 2.0 dated May 2, 2024* 606586-000124 Revision 1.0 dated November 30, 2021 * May 29, 2024 * or later FAA approved version FAA Approved: __________________________________ Paul (Vu) Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service FAA APPROVED MODEL LIST (AML) NO. SR04548CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS AIRS-400 FLIGHT MONITORING SYSTEM Issue Date: January 13, 2022 Page 2 of 2 Appendix A: All Models Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis is as follows: a. As determined by the Type Certificate Data Sheet (TCDS) of the aircraft for parts not changed or not affected by this STC. Regulations at the amendment levels listed in Table 1 below for parts changed or affected by the STC since the reference date of STC application, April 14, 2021 Table 1: Certification Basis Including Amendments. Regulations Amdt. § 27.301 27-0 § 27.303 27-0 § 27.305 27-0 § 27.307 (a) 27-26 § 27.321 27-11 § 27.341 27-0 § 27.561 27-32 § 27.601 27-0 § 27.603 27-16 § 27.605 27-16 § 27.609 27-0 § 27.613 27-26 § 27.853 27-37 § 27.1301 27-0 § 27.1307 27-0 § 27.1309 27-46 § 27.1327 27-13 § 27.1351 27-13 § 27.1357 27-13 § 27.1365 27-35 § 27.1529 27-18 § 27.1547 27-13 § 27.1581 27-14 ## Every issue (2) - May 29, 2024: Amended, Current. [certificate](https://openairdocs.org/files/sha256/5b/1f/5b1f20e1b41169e623bf74cd6b58e2af0c0d1690ef2eb9c8be62056d7a8d3597), [SR04548CH_AML.pdf](https://openairdocs.org/files/sha256/c5/6a/c56aeb5e9b3107a5093746b375872b755cc4ff9f9f26e7de83d9bd9436dd0846) - January 11, 2022: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/2a/7c/2a7c18af103d191ae7b1d799cddd1ec39f7592fbe2fe5c6e487f7c6faaff9a01), [SR04548CH_AML.pdf](https://openairdocs.org/files/sha256/fc/9c/fc9c05a41b953ef4091291b9fb95143ae274be3229d027496c716b3cc11873fd) --- 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.