The STC search system is a complimentary service provided to the aviation community. We hope you find it useful. We do not provide access to STC engineering. For that you need to contact the STC holder directly. Our primary product is a comprehensive library of aviation regulations and standards, including tools for generating Airworthiness Directive compliance reports.

No. of STCs: 12

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2951WE	Status: Historical	App Date: 05/05/1975	Rev Date: 03/23/1978
Description: Installation of Steward Davis Airstairs P/N 77004. (747-E4A and 747-E4B)
TC Nos.: A20WE
Models: The Boeing Company747
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5005SW-D	Status: Historical	App Date:	Rev Date: 08/27/1984
Description: Miscellaneous improvements to mission equipment and airplane configuration. (747-E4B)
TC Nos.: A20WE
Models: The Boeing Company747
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: E-Systems Inc P.O. Box 1056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5009SW-D	Status: Current	App Date: 09/11/1985	Rev Date: 02/27/1990
Description: Installation of secure communications enhancement(Quick Comm)
TC Nos.: 4A21
Models: The Boeing Company707-100B Long Body, 707-100B Short Body
ACO: AIR-760: Central Certification Branch FTW

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5009SW-D	Status: Historical	App Date:	Rev Date: 07/06/1989
Description: Installation of secure communications enhancement(Quick Comm). (707-153B (VC-137B))
TC Nos.: 4A21
Models: The Boeing Company707
ACO: Boston ACO Branch, Tel: +1 (781) 238-7151

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5011SW-D	Status: Current	App Date:	Rev Date: 03/19/1987
Description: Installation of upgraded Davtron clock system and APU access. (707-353B(VC-137C))
TC Nos.: 4A26
Models: The Boeing Company707
ACO: AIR-760: Central Certification Branch FTW

STC Holder: E-Systems Inc P.O. Box 1056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5018SW-D	Status: Current	App Date: 11/13/1984	Rev Date: 11/28/1984
Description: Installation of galley vent valve inhibit circuit
TC Nos.: 4A26
Models: The Boeing Company707-300B Series
ACO: AIR-760: Central Certification Branch FTW

STC Holder: E-Systems Inc P.O. Box 1056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5021SW-D	Status: Current	App Date: 01/06/1988	Rev Date: 02/27/1990
Description: Replacement of KW7 secure comm with a KG-84 installation
TC Nos.: 4A21, 4A26
Models: The Boeing Company707-100B Long Body, 707-100B Short Body, 707-300B Series
ACO: AIR-760: Central Certification Branch FTW

STC Holder: E-Systems Inc P.O. Box 1056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5034SW-D	Status: Current	App Date: 09/21/1990	Rev Date: 10/31/1990
Description: Modification of potable water system on VIP SAM Model 707-153B to incorporate pumps at four lavatories; installation of floor pans and decorative wall strips
TC Nos.: 4A21
Models: The Boeing Company707-100B Long Body, 707-100B Short Body
ACO: AIR-760: Central Certification Branch FTW

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5035SW-D	Status: Historical	App Date:	Rev Date: 02/12/1991
Description: Installation of an emergency locator transmitter (ELT).
TC Nos.: A6WE
Models: McDonnell Douglas CorporationDC-9-32 (VC-9C), DC-9-32F (C-9A)
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5043SW-D	Status: Historical	App Date:	Rev Date: 12/16/1991
Description: Replacement of the Mission Communications system. (707-353B)
TC Nos.: 4A26
Models: The Boeing Company707
ACO: Boston ACO Branch, Tel: +1 (781) 238-7151

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5044SW-D	Status: Historical	App Date:	Rev Date: 07/22/1991
Description: Installation of altitude alert system.
TC Nos.: A6WE
Models: McDonnell Douglas CorporationDC-9-32F (C-9A)
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: E-Systems Inc P.O. Box 6056, Greenville, TX 75403-6056, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5045SW-D	Status: Historical	App Date:	Rev Date: 12/22/1991
Description: Installation of modified avionics system.
TC Nos.: A6WE
Models: McDonnell Douglas CorporationDC-9-32 (VC-9C), DC-9-32F (C-9A)
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140