# STC SA02985CH - Type: Supplemental type certificate - Status: Current, Issued - Holder: Turbine Conversions Ltd, United States - Description: Installation of a Cool Start System in accordance with Installation Instructions , Revision A, dated April 14, 2011, or later FAA Approved revision. - Applied: March 2, 2011 - Status date: May 10, 2011 - Product: Aircraft, Single-Engine - Certification basis: Part 21, Part 23 - Data sheets: [TCDS A17SW](https://openairdocs.org/tcds/A17SW), [TCDS A19SW](https://openairdocs.org/tcds/A19SW), [TCDS A9SW](https://openairdocs.org/tcds/A9SW), [TCDS 1A16](https://openairdocs.org/tcds/1A16), [TCDS A4SW](https://openairdocs.org/tcds/A4SW) - Certificate PDF: https://openairdocs.org/files/sha256/7a/82/7a82ed8dba8b75f1aaa68308415a7ff10f4189704e1a84b502d1d9b9217a0a05 - Approved model list and other attachments: [SA02985CH AML.pdf](https://openairdocs.org/files/sha256/14/30/1430749b0f850cdbdac6a7866eaba5979e0ed35f536a6310e3307fa64ad1270f) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/92A07B3EF05C21DF862578AF0042919D.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA02985CH ## ADs that name it (0) None. ## Approved models (48) - Air Tractor Inc. AT-250 ([TCDS A9SW](https://openairdocs.org/tcds/A9SW)) - Air Tractor Inc. AT-300 ([TCDS A9SW](https://openairdocs.org/tcds/A9SW)) - Air Tractor Inc. AT-301 ([TCDS A9SW](https://openairdocs.org/tcds/A9SW)) - Air Tractor Inc. AT-302 ([TCDS A9SW](https://openairdocs.org/tcds/A9SW)) - Air Tractor Inc. AT-400 ([TCDS A9SW](https://openairdocs.org/tcds/A9SW)) - Air Tractor Inc. AT-400A ([TCDS A9SW](https://openairdocs.org/tcds/A9SW)) - Air Tractor Inc. AT-401 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-401A ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-401B ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-402 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-402A ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-402B ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-501 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-502 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-502A ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-502B ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-503 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-503A ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-504 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW)) - Air Tractor Inc. AT-602 ([TCDS A19SW](https://openairdocs.org/tcds/A19SW)) - Air Tractor Inc. AT-802 ([TCDS A19SW](https://openairdocs.org/tcds/A19SW)) - Air Tractor Inc. AT-802A ([TCDS A19SW](https://openairdocs.org/tcds/A19SW)) - Allied Ag Cat Productions Inc. G-164 ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164A ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164B ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164B (with 73 inch wing gap) ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164B-15T ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164B-20T ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164B-34T ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164C ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164D ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Allied Ag Cat Productions Inc. G-164D (with 73 inch wing gap) ([TCDS 1A16](https://openairdocs.org/tcds/1A16)) - Thrush Aircraft Inc. 600 S-2D ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S-2R ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-G10 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-G5 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-G6 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-R1340 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-R1820 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-R3S ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T11 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T15 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T34 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T45 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T65 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2R-T660 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2RHG-T34 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) - Thrush Aircraft Inc. S2RHG-T65 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW)) ## 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. Part 23 of the Federal Aviation Regulations See Approved Model Listing for complete certification basis. Installation of a Cool Start System in accordance with Installation Instructions , Revision A, dated April 14, 2011, or later FAA Approved revision. 1. Compatibility of this design change with previously approved modifications must be determined by the installer. 2. FAA Approved Airplane Flight Manua l Supplement 511004 For Cool Start System Air Tractor, AG-CAT, Thrust Modified In Accordance With STC SA02985CH, Revision IR, dated March 28, 2011, or late r FAA Approved revision is required. 3. Instructions for Continued Airworthiness, Turbines C onversions, LTD Maintenance Ma nual 511002, dated December 2, 2010, or later FAA Accepted revision is required. 4. Cool Start Installation limited to airplanes that have a 28 volt GE Aviation Czech s.r.o M601, HONEYWELL TPE331, and PRATT & WHITNEY CANADA PT6A model series engine starting system. 5. If the holder agrees to permit another pers on to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. ...End... This certificate and the supporting data, which is the basis for approva l, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Turbine Conversions, LTD 18155 120th Ave. Nunica, MI 49448 See AML Make : (Signature) Michael Downs Acting Manager, Propulsion Branch Chicago Aircraft Certification Office (Title) Date of application: March 2, 2011 Date of issuance: May 10, 2011 ### SA02985CH AML.pdf FAA APPROVED MODEL LIST (AML) No. SA02985CH Turbine Conversions, LTD FOR INSTALLATION OF COOL START SYSTEM Issue Date: May 10, 2011 Page 1 of 3 Installation Instructions Turbine Conversions, LTD Item Aircraft Make Aircraft * Model Original Type Certificate Number Certification Basis For Alteration Number Revision & Date AML Amendment Date Cool Start System Report 511000 Air Tractor AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A A9SW 14 Code of Federal Regulations (CFR) Part 23 511001 Rev. A Dated April 14, 2011 Cool Start System Report 511000 Air Tractor AT-602, AT-802, AT-802A A19SW 14 Code of Federal Regulations (CFR) Part 23 511001 Rev. A Dated April 14, 2011 Turbine Conversions, LTD Item Aircraft Make Aircraft * Model Original Type Certificate Number Certification Basis For Alteration Installation Instructions Number Revision & Date AML Amendment Date Cool Start System Report 511000 Air Tractor AT-401, AT-401A AT-401B, AT-402 AT-402A, AT-402B AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504 A17SW 14 Code of Federal Regulations (CFR) Part 23 511001 Rev. A Dated April 14, 2011 Cool Start System Report 511000 Allied Ag-Cat Productions, Inc. G-164, G-164A, G-164B, G-164B with 73” G-164B-15T G-164B-34T G-164B-20T G-164C G-164D G-164D with 73” wing gap 1A16 Civil Air Regulations (CAR) 8.10(a)(1), and CAM 8, and 14 CFR Part 23 511001 Rev. A Dated April 14, 2011 Turbine Conversions, LTD Item Aircraft Make Aircraft * Model Original Type Certificate Number Certification Basis For Alteration Installation Instructions Number Revision & Date AML Amendment Date Cool Start System Report 511000 Thrush Aircraft, Inc. 600 S2D S-2R S2R-T34 S2R-T15 S2R-R3S S2R-T11 S2R-R1340 S2R-R1820 S2R-T65 S2RHG-T65 S2R-T45 S2R-G6 S2R-G10 S2R-G5 S2R-G1 S2RHG-T34 S2R-T660 A4SW 14 Code of Federal Regulations (CFR) Part 23 511001 Rev. A Dated April 14, 2011 * Airplanes With 28 Volt Starting Systems Used On GE Aviation Czech s.r.o. M601, HONEYWELL TPE331, PRATT & WHITNEY CANADA PT6A Series Model Engines. Original Signed By: Mike Downs FAA Approved:__________________________ M i c h a e l D o w n s . Acting Manager, Propulsion Branch Chicago Aircraft Certification Office ## Every issue (1) - May 10, 2011: Issued, Current. [certificate](https://openairdocs.org/files/sha256/7a/82/7a82ed8dba8b75f1aaa68308415a7ff10f4189704e1a84b502d1d9b9217a0a05), [SA02985CH AML.pdf](https://openairdocs.org/files/sha256/14/30/1430749b0f850cdbdac6a7866eaba5979e0ed35f536a6310e3307fa64ad1270f) --- 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.