# STC SA04377AT - Type: Supplemental type certificate - Status: Current, Issued - Holder: Aerosonic Corporation, United States - Description: Installation of Aerosonic SL114-9823 OASIS Standby Instrument System - Applied: February 29, 2012 - Status date: July 11, 2017 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23, Part 135 - Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13) - Certificate PDF: https://openairdocs.org/files/sha256/e2/37/e23771e310f0b6cd2464dcfa2989b93e08690ed350e09694a4f88a5975469c6c - Approved model list and other attachments: [SA04377AT_AML.pdf](https://openairdocs.org/files/sha256/7f/a8/7fa826b67db57ddeebb6811e8d7c22f3ee0e614a4c5a2547f7c1f858ea3e5390) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DC52F20935A7CB718625816A00683F2C.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04377AT ## ADs that name it (0) None. ## Approved models (23) - Textron Aviation Inc. 182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182A ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182B ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182C ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182D ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182E ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182F ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182G ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182H ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182J ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182K ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182L ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182M ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182N ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182P ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182Q ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182R ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182S ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. 182T ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. R182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. T182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. T182T ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) - Textron Aviation Inc. TR182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13)) ## 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 Pos session of this Supplemental Type Certificate (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. The STC’s supporting documentation (drawings, instructi ons, specifications, flight manual supplements, etc.) is the property of the ST C holder. FAA Form 8110-2 (5/14) Page 1 of 3 Number: SA04377AT This certificate issued to: Aerosonic LLC 1212 North Hercules Avenue Clearwater, FL 33765 Part 23 of the Federal Aviation Regulations. Original Product – Type Certificate Number: (AML) Make: Approved Model List AML-ST13784AT-A, Revision -, Model: dated July 11, 2017, or later FAA approved revisions Description of Type Design Change: Installation of Aerosonic SL114-9823 OASIS Standby Instrument System in accordance with Aerosonic Master Data List 052AP002986, Rev -, dated February 15, 2017, or later FAA approved revisions. This installation includes the following Aerosonic equipment: One 4” Standby Display, an optional second Standby Display, one remote mounted Aerosonic Sensor Unit (ASU), one optional Aerosonic Magnetic Sensing Unit (MSU). Limitations and Conditions: “The OASIS system requires a standby battery (installed under a separate approval) that is independent of the engine starting battery. The standby battery must be capable of providing a minimum of 22 Watts for: - 30 minutes for airplanes certificated with a max altitude up to 25,000 ft. - 60 minutes for airplanes certificated with a max altitude over 25,000 ft, or operates under IFR per §135.163(f). FAA Approved Flight Manual Supplement, Aerosonic document 052AP003003, Rev -, dated July 11, 2017, or later FAA approved revisions, is part of this STC. For maintenance and inspections, apply Aerosonic Instructions for Continued Airworthiness 052AP003004, Rev-B, dated May 5, 2016, or later FAA approved revisions…” (See continuation sheet 3 of 3) Date of Application: February 29, 2012 Date Reissued: Date of Issuance: July 11, 2017 Date Amended: Signature Title Christina M. Underwood, Manager Atlanta Aircraft Certification Office 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 constit ute rights 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: SA04377AT 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: SA04377AT Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constit ute rights 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: July 11, 2017 Date Amended: Limitations and Conditions (Continued): "… This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications, including integration to other Archeion STC’s, will produce no adverse effect upon the airworthiness of that airplane. 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.” 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 parts changed or affected by the change since the reference date of application, February 29, 2012, is based upon 14 CFR Part 23 as amended by Amendment 23-62. Based on Order 8110.48, the certification basis for this modification was determined to be: Regulations at the latest amendment 23-0 through 23-62 §§23.301(a)(b)(c)(d), Amdt. 23-48 §§23.303, Orig. §§23.305(a)(b), Amdt. 23-45 §§23.307(a), Orig. §§23.337(a)(b), Amdt. 23-48 §§23.341(c), Amdt. 23-48 §§23.561(b3), Amdt. 23-62 §§23.601, Orig. §§23.603(a)(b), Amdt. 23-23 §§23.605(a), Amdt. 23-23 §§23.609(a), Orig. §§23.611, Amdt. 23-48 §§23.613(a)(b)(c), Amdt. 23-45 §§23.619, Amdt. 23-7 §§23.625(a)(b)(c), Amdt. 23-7 §§23.771(a), Amdt. 23-14 §§23.773(a1,2), Amdt. 23-45 §§23.777 (a)(b), Amdt. 23-62 §§23.1301(a)(b)(c), Amdt. 23-62 §§23.1303(a)(b)(c)(f), Amdt. 23-62 §§23.1306(a)(b), Amdt. 23-61 §§23.1307, Amdt. 23-49 §§23.1308(a)(b)(c), Amdt. 23-57 §§23.1309(a)(b)(c)(d), Amdt. 23-62 §§23.1311(a)(b)(c), Amdt. 23-62 §§23.1321(a)(c)(d)(e), Amdt. 23-49 §§23.1322(a)(b)(c)(d)(e), Amdt 23-43 §§23.1323(a)(b), Amdt. 23-62 §§23.1325(b), Amdt. 23-50 §§23.1327(a)(b), Amdt. 23-20 §§23.1331(a), Amdt. 23-62 §§23.1351(a)(b)(d)(e), Amdt. 23-49 §§23.1357(a)(b)(c)(d), Amdt 23-43. §§23.1365(a), Amdt 23-49 §§23.1381(a)(b)(c), Orig. §§23.1431(a)(b)(c), Amdt. 23-62 §§23.1519, Orig. §§23.1529, Amdt. 23-26 §§23.1541(a)(c), Amdt. 23-21 §§23.1543(a)(b)(c), Amdt. 23-50 §§23.1355(a), Amdt 23-62 §§23.1381(a)(c)(f), Amdt 23-50 --------------------------END--------------------------- ### SA04377AT_AML.pdf 1212 North Hercules Avenue Clearwater, Florida 33765 727–461–3000 Approved Model List OASIS Standby Instrument System FAA-Approved Date:_July 11, 2017 Page 1 of 4 Document No. AML-ST13784AT-A, Rev - **APPROVED MODEL LIST** **FOR THE** SL114-9823, OASIS Standby Instrument System FOR STC SA04377AT FAA Approved: _________________________________ Manager, Aircraft Certification Office Federal Aviation Administration Atlanta, Georgia 1212 North Hercules Avenue Clearwater, Florida 33765 727–461–3000 Approved Model List OASIS Standby Instrument System FAA-Approved Date:_July 11, 2017 Page 2 of 4 Document No. AML-ST13784AT-A, Rev - REVISIONS Rev Date Revised By Pages Affected Remarks/Comments Draft N/A J D’Brot ALL Draft per ECR3953 on Oct 30, 2014 - July 11, 2017 J D’Brot Section 2 Updated Limitations for secondary power source. Updated Formatting and layout to match approved AFMS and ICA. 1212 North Hercules Avenue Clearwater, Florida 33765 727–461–3000 Approved Model List OASIS Standby Instrument System FAA-Approved Date:_July 11, 2017 Page 3 of 4 Document No. AML-ST13784AT-A, Rev - **TABLE OF CONTENTS** **1. INTRODUCTION 4** **2. LIMITATIONS 4** **3. ORIGINAL CERTIFICATION BASIS 4** 1212 North Hercules Avenue Clearwater, Florida 33765 727–461–3000 Approved Model List OASIS Standby Instrument System FAA-Approved Date:_July 11, 2017 Page 4 of 4 Document No. AML-ST13784AT-A, Rev - 1. INTRODUCTION This document contains the FAA Approved Model List (AML) for STC SA04377AT, Installation of the installation of SL114-9823 OASIS Standby Instrument System . T he OASIS Standby Instrument System includes the Display Unit SLZ 7365, Aerosonic Sensor Unit (ASU) SLZ7366, and Magnetic Sensing Unit (MSU) SLZ7367. 2. LIMITATIONS The OASIS system installation must comply with the OASIS Installation Manual 052AP002993. Any deviation from the OASIS Install ation Manual requires separate ap proval. Installation of the OASIS system requires a second source of power with at least 30 minutes of continuous operation if the primary source of power is lost. For aircraft that do not meet the second power source requirement, a second power source will need to be installed under a separate approval. **3. ORIGINAL CERTIFICATION BASIS** Item Aircraft Make Aircraft Model Orig. Type Certificate AML Revision Date 1 Cessna Aircraft Company Cessna 182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 18 2K, 182L, 182M, 182N, 182P, 182Q, 182R, 182S, 182T, R182, T182, T182T, TR182 3A13 July 11, 2017 ## Every issue (1) - July 11, 2017: Issued, Current. [certificate](https://openairdocs.org/files/sha256/e2/37/e23771e310f0b6cd2464dcfa2989b93e08690ed350e09694a4f88a5975469c6c), [SA04377AT_AML.pdf](https://openairdocs.org/files/sha256/7f/a8/7fa826b67db57ddeebb6811e8d7c22f3ee0e614a4c5a2547f7c1f858ea3e5390) --- 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.