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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