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No. of STCs: 25

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA00014AT	Status: Historical	App Date:	Rev Date: 10/26/1992
Description: Installation of Lycoming model L/TIO-540-J2B engines.
TC Nos.: A20SO
Models: The New Piper Aircraft Inc.PA-31-350
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA00336AT	Status: Historical	App Date:	Rev Date: 03/15/1995
Description: Installation of winglets.
TC Nos.: A20SO, A8EA
Models: The New Piper Aircraft Inc.PA-31, PA-31-325, PA-31-350, PA-31P
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA00616AT	Status: Historical	App Date:	Rev Date: 12/12/1994
Description: Installation of McCauley propeller model3AF32C504/82NEA on 95- C55,D55, D55A, E55, E55A, and McCauley propeller model 3AF32C512/82NEA on 58 and 58A.
TC Nos.: 3A16
Models: Raytheon Aircraft Company58, 58A, 95-C55, 95-C55A, D55, D55A, E55, E55A
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA01349AT	Status: Historical	App Date:	Rev Date: 05/01/1997
Description: Installation of winglets, P/N's66000-50 and 66000-51.
TC Nos.: 3A16, A-765
Models: Raytheon Aircraft Company18 Series, 95-55, D55, E55
ACO: AIR-750: East Certification Branch ATL

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		Contact: Mike Jones Phone: (615) 896-5678 E-Mail: mike@mikejonesaircraft.com Web Site: https://www.mikejonesaircraft.com/
STC No.: SA1151SO	Status: Historical	App Date:	Rev Date: 09/29/1983
Description: Installation of Hartzell HC-C4YR-2L/-2/FJC7663D-6Q/FC7663D-6Q propellers, cowling changes, and winglets or wing tip extension.
TC Nos.: A20SO
Models: The New Piper Aircraft Inc.PA-31-350
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1421SO	Status: Historical	App Date:	Rev Date: 03/14/1983
Description: Installation of 40:1 gear ratio wing flap transmissions and related changes. (PA-31P 3P1-7730012) (PA-31-300 31-2-31-511) (PA-31 SERIES S/N 31-2-31-7812129) (PA-31-325 31-7300932 - 31-7812129) (PA-31-350 31-5001 - 31-7852171)
TC Nos.: A20SO, A8EA
Models: The New Piper Aircraft Inc.PA-31 Series, PA-31-300, PA-31-325, PA-31-350, PA-31P
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1762SO	Status: Historical	App Date:	Rev Date: 02/18/2000
Description: Install two Teledyne Model IO-550-C engines, two Hartzell HC-C4YF-2E/FC7063Q propellers,Hartzell D4511P spinners, nose cowling per Colemill P/N 74000-1,and winglets per Colemill P/N66000-50 and -51.
TC Nos.: 3A16
Models: Raytheon Aircraft Company58, 58A, 95-C55, D55, E55
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1835SO	Status: Historical	App Date:	Rev Date: 02/25/1988
Description: Install Teledyne Model IO-550-B engine, Hartzell HC- C4YF-1E/FC7063Q propeller and Hartzel D4511P, spinner on all models. (36 S/N E-1 THRU E-926) (A36 S/N E-927 THRU 3-2111 EXCEPT E-1946 AND E-2104)
TC Nos.: 3A15
Models: Raytheon Aircraft Company35-C33A, 36, A36, E33A, E33C, F33A, F33C, S35, V35, V35A, V35B
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2103SO	Status: Historical	App Date:	Rev Date: 04/28/1987
Description: Installation of auxiliary fuel wing tips and winglets.
TC Nos.: 3A16
Models: Raytheon Aircraft Company58, 58A, 95-55, 95-A55, 95-B55, 95-B55A, 95-B55B (T-42A), 95-C55, 95-C55A, D55, D55A, E55, E55A
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2109SO	Status: Historical	App Date:	Rev Date: 05/07/1987
Description: Installation of Teledyne Model IO-470K engine. (305F REGAL AIR)
TC Nos.: 5A5
Models: The Cessna Aircraft Company305 Series, 305A (USAF 0-1A), 305C (USAF 0-1E), 305D (USAF 0-1G), 305F
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2207SO	Status: Historical	App Date:	Rev Date: 05/14/2001
Description: Installation of two Teledyne model IO-550-A engines. (310R S/N 310R1501 AND SUBSEQUENT)
TC Nos.: 3A10
Models: The Cessna Aircraft Company310R, T310 Series, T310P, T310Q, T310R
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2996SO	Status: Historical	App Date:	Rev Date: 09/25/1991
Description: Installation of McCauley propeller governor.
TC Nos.: 3A10
Models: The Cessna Aircraft Company310G, 310H, 310I, 310J, 310K, 310L, 310N, 310P, 310Q, 310R
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2997SO	Status: Historical	App Date:	Rev Date: 09/25/1991
Description: Installation of McCauley propeller governor.
TC Nos.: 3A16
Models: Raytheon Aircraft Company58, 95-55, 95-A55, 95-B55, 95-C55, D55, E55
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2998SO	Status: Historical	App Date:	Rev Date: 09/25/1991
Description: Installation of McCauley propeller governor.
TC Nos.: A20SO
Models: The New Piper Aircraft Inc.PA-31, PA-31-325, PA-31-350
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2999SO	Status: Current	App Date:	Rev Date: 08/13/1991
Description: Installation of propeller governor.
TC Nos.: 3A15
Models: Raytheon Aircraft Company35-C33A, 36, A36, E33, E33A, E33C, F33, F33A, F33C, S35, V35, V35A, V35B
ACO: AIR-750: East Certification Branch ATL

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA340SO	Status: Historical	App Date:	Rev Date:
Description: Continental IO-520E engines and Hartzell 3-bladed propellers.
TC Nos.: 6A1
Models: Twin Commander Aircraft Corporation500 Series
ACO: Chicago ACO Branch, Tel: +1 (847) 294-7358

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA340SO	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Continental IO-520E engines and Hartzell 3-bladed propellers.
TC Nos.: 6A1
Models: Twin Commander Aircraft Corporation500 Series
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA366SO	Status: Historical	App Date:	Rev Date:
Description: Gross weight increased to 6530 pounds.
TC Nos.: 6A1
Models: Twin Commander Aircraft Corporation500 Series
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA366SO	Status: Historical	App Date:	Rev Date: 01/01/1960
Description: Gross weight increased to 6530 pounds.
TC Nos.: 6A1
Models: Twin Commander Aircraft Corporation500 Series
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA412SO	Status: Historical	App Date:	Rev Date: 11/30/1994
Description: Installation of Continental IO-520-E engines or two model IO-550E engines and either two McCauley model3AF32C504 or two model 3AF32C512 propellers.
TC Nos.: 3A10
Models: The Cessna Aircraft Company310G, 310H, 310I, 310J, 310K, 310L, 310N, 310P, 310Q
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA432SO	Status: Historical	App Date: 02/25/1970	Rev Date: 11/10/2005
Description: Installation of two Teledyne Continental Motors (TCM) model IO-520-E engines (derated to260 hp) and Hartzell model EHC-A3VF-2B/V7636D propellers and related changes.
TC Nos.: 3A16
Models: Raytheon Aircraft Company95-55, 95-A55, 95-B55, 95-B55A, 95-B55B (T-42A)
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA432SO	Status: Historical	App Date:	Rev Date: 02/24/2000
Description: Installation of two Teledyne Continental Motors (TCM) model IO-520-E engines (derated to260 hp) and Hartzell model EHC-A3VF-2B/V7636D propellers and related changes.
TC Nos.: 3A16
Models: Raytheon Aircraft Company95-55, 95-A55, 95-B55, 95-B55A, 95-B55B (T-42A)
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA518SO	Status: Historical	App Date:	Rev Date: 08/28/1972
Description: Installation of Continental IO-520-E derated engines and McCauley D3AF32C87/82NC-6 or -8 propellers.
TC Nos.: 3A25
Models: The Cessna Aircraft Company320, 320-1, 320A, 320B, 320C
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		Contact: Mike Jones Phone: (615) 896-5678 E-Mail: mike@mikejonesaircraft.com Web Site: https://www.mikejonesaircraft.com/
STC No.: SA970SO	Status: Historical	App Date: 08/19/1977	Rev Date: 05/25/2007
Description: Installation of Lycoming TIO-540-J2BD or TIO-540-J2B engines and Hartzell propellers HC-C4YR-2/FC7663D-4R or HC-C4YR-2/FC7663D-6Q, additional fuel pump and related cowling changes.
TC Nos.: A20SO
Models: Piper Aircraft Inc.PA-31, PA-31-325
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500

STC Holder: Colemill Enterprises Inc. 2640 Airpark Dr., Cornelia Fort Airpark, Nashville, TN 37206, United States		Contact: Mike Jones Phone: (615) 896-5678 E-Mail: mike@mikejonesaircraft.com Web Site: https://www.mikejonesaircraft.com/
STC No.: SA970SO	Status: Historical	App Date: 08/19/1977	Rev Date: 10/20/1992
Description: Installation of Lycoming TIO-540-J2BD or TIO-540-J2B engines and Hartzell propellers HC-C4YR-2/FC7663D-4R or HC-C4YR-2/FC7663D-6Q, additional fuel pump and related cowling changes.
TC Nos.: A20SO
Models: Piper Aircraft Inc.PA-31, PA-31-325
ACO: Atlanta ACO Branch, Tel: +1 (404) 474-5500