# STC SA04112CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: Appareo Systems LLC., United States - Description: Installation of Appareo Systems, LLC Stratus ESG ADS-B transponder - Applied: June 29, 2012 - Status date: November 27, 2018 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS A-802](https://openairdocs.org/tcds/A-802), [TCDS A00009CH](https://openairdocs.org/tcds/A00009CH), [TCDS A47CE](https://openairdocs.org/tcds/A47CE), [TCDS TA4CH](https://openairdocs.org/tcds/TA4CH), [TCDS 2A8](https://openairdocs.org/tcds/2A8), [TCDS 2A3](https://openairdocs.org/tcds/2A3), [TCDS 1A1](https://openairdocs.org/tcds/1A1), [TCDS 2A13](https://openairdocs.org/tcds/2A13), [TCDS A1EA](https://openairdocs.org/tcds/A1EA), [TCDS A18SO](https://openairdocs.org/tcds/A18SO), [TCDS A-768](https://openairdocs.org/tcds/A-768), [TCDS 3A19](https://openairdocs.org/tcds/3A19), [TCDS A-799](https://openairdocs.org/tcds/A-799), [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS A13CE](https://openairdocs.org/tcds/A13CE), [TCDS 5A6](https://openairdocs.org/tcds/5A6), [TCDS 3A13](https://openairdocs.org/tcds/3A13), [TCDS 3A24](https://openairdocs.org/tcds/3A24), [TCDS 3A21](https://openairdocs.org/tcds/3A21), [TCDS 3A15](https://openairdocs.org/tcds/3A15) and 2 more - Certificate PDF: https://openairdocs.org/files/sha256/81/52/81529ab3110e38e43104e5d0ed7e1c4098f5d33482a7789b940d92da7c960443 - Approved model list and other attachments: [SA04112CH_AML.pdf](https://openairdocs.org/files/sha256/80/84/8084038b79cd70308c3dc8a1322b6b18aa02b5771d01a7503b37c8f3588055aa) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/22001D1CCB4B30CF8625835800616CFC.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04112CH ## ADs that name it (0) None. ## Approved models (220, first 50) - AeroSedan LLC 15AC ([TCDS A-802](https://openairdocs.org/tcds/A-802)) - AeroSedan LLC S15AC ([TCDS A-802](https://openairdocs.org/tcds/A-802)) - Cirrus Design Corporation SR20 ([TCDS A00009CH](https://openairdocs.org/tcds/A00009CH)) - Cirrus Design Corporation SR22 ([TCDS A00009CH](https://openairdocs.org/tcds/A00009CH)) - Cirrus Design Corporation SR22T ([TCDS A00009CH](https://openairdocs.org/tcds/A00009CH)) - Diamond Aircraft Industries Inc DA 40 ([TCDS A47CE](https://openairdocs.org/tcds/A47CE)) - Diamond Aircraft Industries Inc DA 40 NG ([TCDS A47CE](https://openairdocs.org/tcds/A47CE)) - Diamond Aircraft Industries Inc DA 40F ([TCDS A47CE](https://openairdocs.org/tcds/A47CE)) - Diamond Aircraft Industries Inc DA20-A1 ([TCDS TA4CH](https://openairdocs.org/tcds/TA4CH)) - Diamond Aircraft Industries Inc DA20-C1 ([TCDS TA4CH](https://openairdocs.org/tcds/TA4CH)) - Lavia Argentina S.A. (Laviasa) PA-25 ([TCDS 2A8](https://openairdocs.org/tcds/2A8)) - Lavia Argentina S.A. (Laviasa) PA-25-235 ([TCDS 2A8](https://openairdocs.org/tcds/2A8)) - Lavia Argentina S.A. (Laviasa) PA-25-260 ([TCDS 2A8](https://openairdocs.org/tcds/2A8)) - Mooney International Corporation M20 ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20A ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20B ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20C ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20D ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20E ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20F ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20G ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20J ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20K ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20L ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20M ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20R ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20S ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20TN ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20U ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Mooney International Corporation M20V ([TCDS 2A3](https://openairdocs.org/tcds/2A3)) - Piper Aircraft Inc. PA-16 ([TCDS 1A1](https://openairdocs.org/tcds/1A1)) - Piper Aircraft Inc. PA-16S ([TCDS 1A1](https://openairdocs.org/tcds/1A1)) - Piper Aircraft Inc. PA-28-140 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-150 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-151 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-160 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-161 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-180 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-181 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-201T ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-235 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28-236 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28R-180 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28R-200 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28R-201 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28R-201T ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28RT-201 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28RT-201T ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28S-160 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) - Piper Aircraft Inc. PA-28S-180 ([TCDS 2A13](https://openairdocs.org/tcds/2A13)) All 220: https://openairdocs.org/stc/SA04112CH/models.md ## 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. 23 Federal Aviation Installation of Appareo Systems, LLC Stratus ES & Stratus ESG ADS-B transponder in accordance with the Appareo Systems Stratus ES/ESG STC Master Document List on FAA AML No. SA04112CH. 1. The installer must determine whether this design change is compatible with previously approved modifications. 2. A copy of this certificate and AML No. SA04112CH must be maintained as part of the permanent records for the modified aircraft. 3. FAA Approved Airplane Flight Manual Supplement identified on FAA AML No. SA04112CH is a required part of this modification. 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. Appareo Systems, LLC 1810 NDSU Research Circle North Fargo, ND 58102 See attached FAA Approved Model List (AML) No. SA04112CH for list of approved airplane models and applicable airworthiness regulations. June 29, 2012 July 7, 2016 April 12, 2017; September 22, 2017 (Signature) Steven L. Lardinois Manager, Systems Section Chicago ACO Branch (Title) ### SA04112CH_AML.pdf FAA APPROVED MODEL LIST (AML) NO. SA04112CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS STRATUS ES & STRATUS ESG ADS-B Issue Date: July 7, 2016 Page 1 of 5 **INSTALLATION** **INSTRUCTIONS** **ITEM** **AIRCRAFT MAKE** **AIRCRAFT MODEL** **ORIGINAL TYPE** **CERTIFICATE NUMBER** **CERTIFICATION BASIS FOR** **ALTERATION** **MASTER** **DOCUMENT LIST** **REVISION NO.** **AND DATE** AFM **SUPPLEMENT** **NUMBER/DATE** AML AMENDMENT DATE 1 Cessna Aircraft Company 172, 172A, 172B, 172C, 172D, 172E, 172F, 172G, 172H, 172I, 172K, 172L, 172M, 172N, 172P, 172Q, 172R, 172S 3A12 14 CFR Part 23 and Amendments identified in TCDS 3A12 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 1.7, dated April 12, 2017, or later FAA approved revision April 12, 2017 2 Piper Aircraft, Inc. PA-28-140, PA-28-150, PA-28-151, PA-28-160, PA-28-161, PA-28-180, PA-28-181, PA-28-235, PA-28-236, PA-28-201T, PA-28R- 180, PA-28R-200, PA-28R-201, PA-28R-201T, PA-28RT-201, PA- 28RT-201T, PA-28S-160, PA-28S- 180 2A13 14 CFR Part 23 and Amendments identified in TCDS 2A13 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 1.7, dated April 12, 2017, or later FAA approved revision April 12, 2017 3 Mooney International Corporation M20, M20A, M20B, M20C, M20D, M20E, M20F, M20G, M20J, M20K, M20L, M20M, M20R, M20S, M20TN, M20U, M20V 2A3 CAR 3 and Amendments identified in TCDS 2A3 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision September 22, 2017 4 AeroSedan, LLC 15AC, S15AC A-802 CAR 3 and Amendments identified in TCDS A-802 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 5 Cirrus Design Corporation SR20, SR22, SR22T A00009CH 14 CFR Part 23 and Amendments identified in TCDS A00009CH as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 FAA APPROVED MODEL LIST (AML) NO. SA04112CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS STRATUS ES & STRATUS ESG ADS-B Issue Date: July 7, 2016 Page 2 of 5 6 Diamond Aircraft Industries, Inc. DA20-A1, DA20-C1 TA4CH 14 CFR Part 23 and Amendments identified in TCDS TA4CH as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 7 Diamond Aircraft Industries, Inc. DA 40, DA 40 F, DA 40 NG A47CE 14 CFR Part 23 and Amendments identified in TCDS A47CE as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 8 Piper Aircraft, Inc. PA-16, PA-16S 1A1 CAR 3 and Amendments identified in TCDS 1A1 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 9 LAVIA **ARGENTINA S.A.** (LAVIASA) PA-25, PA-25-235, PA-25-260 2A8 CAR 3 and Amendments identified in TCDS 2A8 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 10 Piper Aircraft, Inc. PA-38-112 A18SO 14 CFR Part 23 and Amendments identified in TCDS A18SO as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 11 Piper Aircraft, Inc. PA-30, PA-39, PA-40 A1EA CAR 3 and Amendments identified in TCDS A1EA as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision May 23, 2018 12 Textron Aviation, Inc. 35-33, 35-A33, 35-B33, 35-C33, E33, E33A, E33C, F33, F33A, F33C, G33, H35, G36, J35, K35, M35, N35, P35, S35, V35, V35A, V35B, 36, A36, A36TC, B36TC 3A15 CAR 3 and Amendments identified in TCDS 3A15 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 FAA APPROVED MODEL LIST (AML) NO. SA04112CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS STRATUS ES & STRATUS ESG ADS-B Issue Date: July 7, 2016 Page 3 of 5 13 Textron Aviation, Inc. 35, A35, B35, C35, D35, E35, F35, G35, 35R A-777 CAR 3 and Amendments identified in TCDS A-777 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 14 Textron Aviation, Inc. 182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182S, 182T, 182K, 182L, 182M, 182N, 182P, 182Q, 182R, R182, T182, TR182, T182T 3A13 CAR 3, 14CFR Part 23, and Amendments identified in TCDS 3A13 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 15 Textron Aviation, Inc. 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, A150K, 150L, A150L, 150M, A150M, 152, A152 3A19 CAR 3, 14 CFR Part 23 and Amendments identified in TCDS 3A19 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 16 Textron Aviation, Inc. 210, 210A, 210B, 210C, 210D, 210E, 210F, T210F, 210G, T210G, 210H, T210H, 210J, T210J, 210K, T210K, 210L, T210L, 210M, T210M, 210N, P210N, T210N, 210R, P210R, T210R, 210-5 (205), 210-5A (205A) 3A21 CAR 3 and Amendments identified in TCDS 3A21 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 17 Textron Aviation, Inc. 185, 185A, 185B, 185C, 185D, 185E, A185E, A185F 3A24 CAR 3, 14 CFR Part 23 and Amendments identified in TCDS 3A24 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 18 Textron Aviation, Inc. 180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K 5A6 CAR 3 and Amendments identified in TCDS 5A6 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 FAA APPROVED MODEL LIST (AML) NO. SA04112CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS STRATUS ES & STRATUS ESG ADS-B Issue Date: July 7, 2016 Page 4 of 5 19 Textron Aviation, Inc. 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A, 421, 421A, 421B, 421C, 425 A7CE CAR 3 and Amendments identified in TCDS A7CE as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 20 Textron Aviation, Inc. 177, 177A, 177B A13CE 14 CFR Part 23 and Amendments identified in TCDS A13CE as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 21 Textron Aviation, Inc. 120, 140 A-768 CAR 4a and Amendments identified in TCDS A-768 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 22 Textron Aviation, Inc. 170, 170A, 170B A-799 CAR 3 and Amendments identified in TCDS A-799 as amended by Appendix A Appareo Systems, 606586-000054 Revision 2.5, dated November 1, 2018, or later FAA approved revision Appareo Systems 606586-000075, Rev. 2.0, dated September 20, 2017, or later FAA approved revision October 18, 2018 FAA Approved: __________________________________ Steven L. Lardinois Manager, Systems Section Chicago ACO Branch Amended: April 12, 2017; September 22, 2017; May 23, 2018; October 18, 2018; November 27, 2018 FAA APPROVED MODEL LIST (AML) NO. SA04112CH Appareo Systems LLC. FOR THE INSTALLATION OF APPAREO SYSTEMS STRATUS ES & STRATUS ESG ADS-B Issue Date: July 7, 2016 Page 5 of 5 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, June 29, 2012 Table 1: Certification Basis Including Amendments. Regulations Amdt. § 23.301 (a)(b) 23-48 § 23.303 23-0 § 23.305 (a) 23-45 § 23.307 (a) 23-0 § 23.561 (b)(3) 23-62 § 23.601 23-0 § 23.603 23-23 § 23.605 (a) 23-23 § 23.609 (a) 23-0 § 23.613 (a)(b) 23-45 § 23.619 23-7 § 23.625 (a) 23-7 § 23.771 (a) 23-14 § 23.773 (a)(2) 23-45 § 23.777 (a) 23-62 § 23.853 (a) 23-62 § 23.1301 (a)(b)(c) 23-62 § 23.1306 (b) 23-0 § 23.1308 (c) 23-0 § 23.1309 (a)(1) 23-62 § 23.1351 (a)(b) 23-49 § 23.1357 (a)(b)(c) 23-43 § 23.1359 (c) 23-0 § 23.1365 (a)(b)(c)(d) 23-49 § 23.1367 (c)(d) 23-0 § 23.1381 (a)(b) 23-0 § 23.1431 (a)(b) 23-62 § 23.1501 (a)(b) 23-21 § 23.1529 23-26 § 23.1555 (a) 23-62 ## Every issue (5) - November 27, 2018: Amended, Current. [certificate](https://openairdocs.org/files/sha256/81/52/81529ab3110e38e43104e5d0ed7e1c4098f5d33482a7789b940d92da7c960443), [SA04112CH_AML.pdf](https://openairdocs.org/files/sha256/80/84/8084038b79cd70308c3dc8a1322b6b18aa02b5771d01a7503b37c8f3588055aa) - May 23, 2018: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/81/52/81529ab3110e38e43104e5d0ed7e1c4098f5d33482a7789b940d92da7c960443), [SA04112CH_AML.pdf](https://openairdocs.org/files/sha256/cb/81/cb815a58bb4a91954b4e69e5ad7c1901ddc84cabbfb94616c52b9f0bf02a8e7b) - September 22, 2017: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/81/52/81529ab3110e38e43104e5d0ed7e1c4098f5d33482a7789b940d92da7c960443), [SA04112CH_AML.pdf](https://openairdocs.org/files/sha256/40/f4/40f4ce94acb2f271069aeab6bc5993d811d0b933258d2ecc2c5c38e31599a0c1) - April 12, 2017: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/b9/f0/b9f032bd9b06a792500382e051c801fecd15a2157ef7b0c8f43c176cece0891f), [SA04112CH AML.pdf](https://openairdocs.org/files/sha256/ae/3c/ae3c8d2bd39e1fd3e22098b3b2ea365c64314ad5b387ae18571ae25c9f3ecc91) - July 7, 2016: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/a4/e5/a4e50eca88e50e9cb3efe48df7451c6cfcc65715479c501a31a9bbdd35b32220) --- 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.