# STC SA09536AC-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: S-TEC Corporation, United States - Description: Installation of S-TEC 01304 Digital FLight Control System. - Applied: June 10, 2004 - Status date: January 3, 2008 - Product: Aircraft, Single-Engine - Certification basis: Part 21, Part 23, Part 36 - Data sheets: [TCDS A8EA](https://openairdocs.org/tcds/A8EA) - Certificate PDF: https://openairdocs.org/files/sha256/c1/f4/c1f4362be2cbc9b176365913d880a2e05232eb499da2210e4107f4a71598de81 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/209F6C4094ABBA36862573DA005BEBCC.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA09536AC-D ## ADs that name it (0) None. ## Approved models (1) - The New Piper Aircraft Inc. PA-31T ([TCDS A8EA](https://openairdocs.org/tcds/A8EA)) ## 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 Number SA09536AC-D This Certificate issued to S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 23 of the Federal Aviation Regulations. (For Certification Basis see Continuation Sheet 4 of 4) Original Product Type Certificate Number : A8EA Make : The New Piper Aircraft, Inc. PA-31T Model : 1. Installation of S-TEC 01304 Digital Flight Control System (DFCS), Three Axis Automatic Flight Guidance System Part No. 01304-07-01-006, in accordance with master Data List ST-917-L-0001, Revision E, dated 1-03-08, or later FAA approved revision. 2. FAA approved Airplane Flight Manual Supplement No. ST-917-M-0001, Revision A, dated 1-03-08, or later FAA approved revision is required. This certificate and the supporting data which is t he basis for approval shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Date of application : June 10, 2004 Date of issuance : August 29, 2005 Date reissued January 03, 2008 Date amended : (Signature) James W. Smisek DAS-100.2 DAS administrator, DAS700096SW (Title) Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code) Signature of grantor (In ink): Number SA09536AC-D Date Re-Issued: 1-03-08 Limitations and Conditions (continued) 1. Installation of STC SA09537AC-D for Magic Electronic Flight Instrument System (EFIS) is required for this installation. 2. Compatibility of this design with previously approved modifications must be determined by the installer. 3. 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. 4. This STC applies to Piper PA31T with serial numbers 31T-7400002 through 31T-7720069 inclusive (Cheyenne), and 31T-7820001 through 31T-8020091 inclusive (Cheyenne II). 5. Aircraft with serial numbers 31T-7920017, 31T -7920031, 31T-7920033, 31T-7920050, 31T-7920076, 31T-7920080, 31T-7920085, 31T-8020013, 31T-8020028, 31T-8020040, 31T-8020047, 31T-8020054, 31T-8020077, 31T-8020079, 31T-8020092, and 31T-7904 045 are not eligible for US certification and are not included in this STC. Number SA09536AC-D Date Re-Issued: 1-03-08 Certification Basis: used for this STC FAR 21.93(b) Amdt 21-81 08/07/02 FAR 23.685 Amdt 23-17, Eff. 02/01/77 FAR 23.301 Amdt 23-48, Eff. 03/11/96 FAR 23.689 Amdt 23-7, Eff. 09/14/69 FAR 23.303 Amdt 0, Eff. 02/01/65 FAR 23.693 Amdt 0, Eff. 02/01/65 FAR 23.305 Amdt 23-45, Eff. 09/07/93 FAR 23.771 Amdt 23-14, Eff 12/20/1973 FAR 23.307 Eff. 02/01/65 FAR 23.777 Amdt. 23-51, Eff. 03/11/96 FAR 23.365 Amdt 0, Eff. 02/01/65 FAR 23.779 Amdt 23-51, Eff 03/11/1996 FAR 23.395 Amdt 23-7, Eff 9/14/05 FAR 23.853 Amdt. 23-49; Feb. 9, 1996]. FAR 23.561 Amdt. 23-48, Eff. 03/11/96 FAR 23.867 Amdt. 23-49, Eff. 03/11/96 FAR 23.571 Amdt. 23-48, Eff. 03/11/96 FAR 23.1301 Amdt. 23-20, Eff. 09/01/77 FAR 23.601 Amdt 0, Eff. 02/01/65 FAR 23.1309 Amdt. 23-49, Eff. 03/11/96 FAR 23.603 Amdt. 23-23, Eff. 12/01/78 FAR 23.1321 Amdt. 23-49, Eff. 03/11/96 FAR 23.605 Amdt. 23-23, Eff. 12/01/78 FAR 23.1322 Amdt. 23-43, Eff. 05/10/93 FAR 23.607 Amdt. 23-48, Eff. 03/11/96 FAR 23.1325 Amdt. 23-50, Eff 3/12/96 FAR 23.609 Amdt 0, Eff. 02/01/65 FAR 23.1329 Amdt. 23-49, Eff 03/11/96 FAR 23.611 Amdt. 23-48, Eff. 03/11/96 FAR 23.1331 Amdt. 23-43, Eff. 05/10/93 FAR 23.613 Amdt. 23-45, Eff. 09/07/93 FAR 23.1335 Amdt. 23-20, Eff 09/01/77 FAR 23.619 Amdt 23-7, Eff. 9/14/1969 FAR 23.1351 Amdt. 23-49, Eff. 03/11/96 FAR 23.623 Amdt. 23-7, Aug. 13, 1969 FAR 23.1357 Amdt. 23-43, Eff. 05/10/93 FAR 23.625 Amdt. 23-7, Aug. 13, 1969 FAR 23.1359 Amdt. 23-49, Eff. 03/11/96 FAR 23.627 Amdt 0, Eff. 02/01/65 FAR 23.1361 Amdt. 23-49, Eff. 03/11/96 FAR 23.671 Amdt 0, Eff. 02/01/65 FAR 23.1365 Amdt. 23-49, Eff. 03/11/96 FAR 23.672, Amdt 23-45, Eff 09/07/03 FAR 23.1367 Amdt. Amdt 0, Eff. 02/01/65 FAR 23.677 Amdt 23-49, Eff 03/11/96 FAR 23.1381 Amdt. Amdt 0, Eff. 02/01/65 FAR 23.1419, Amdt 23-43, Eff 5/10/93 FAR 23.1581, Amdt. 23-50, Eff. 03/11/96 FAR 23.1431, Amdt. 23-49, Eff. 03/11/96 FAR 23.1583, Amdt. 23-50, Eff. 03/11/96 FAR 23.1501, Amdt 23-21, Eff 03/01/78 FAR 23.1585, Amdt. 23-50, Eff. 03/11/96 FAR 23.1529, Amdt. 23-26, Eff. 10/14/80 FAR 36 Amdt 36-25 07/02/04 FAR 23.1541 Amdt. 23-21, Eff. 03/01/78 23-133-SC Protection of Systems for High Intensity Radiated Fields (HIRF) – END – ## Every issue (2) - January 3, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c1/f4/c1f4362be2cbc9b176365913d880a2e05232eb499da2210e4107f4a71598de81) - August 29, 2005: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/b7/07/b707fe2a5d9e00fc2b7b4d71c833056874baf1dded8ea071589b42b575803d45) --- 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.