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No. of STCs: 54

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5783NM	Status: Historical	App Date: 08/23/1992	Rev Date: 10/29/1992
Description: Fabrication of Onboard Systems Model 7 CROPHAWK spray flow measuring system.
TC Nos.: 1A16, A47EU, A4SW
Models: Allied Ag Cat Productions Inc.G-164A Polskie Zaklady Lotnieze Spolka zo.oPZL M18 Thrush Aircraft Inc.S-2R
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1038NW	Status: Current	App Date: 08/05/1980	Rev Date: 03/12/1990
Description: Installation of Model 2560 weighing system.
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206L, 206L-1, 206L-3
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1262NW	Status: Historical	App Date:	Rev Date: 02/12/1993
Description: Fabrication of Onboard Weighing Systems Model 2700 cargo hook load cell system.
TC Nos.: H9EU
Models: Eurocopter FranceAS-350B, AS-350B1, AS-350B2, AS-350BA, AS-350C, AS-350D, AS-350D1
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH142WE	Status: Current	App Date: 03/03/1972	Rev Date: 04/28/1987
Description: Installation of electronic weighing system c-40.
TC Nos.: 1H11
Models: Sikorsky Aircraft CorporationS-58A, S-58B, S-58BT, S-58C, S-58D, S-58DT, S-58E, S-58ET, S-58F, S-58G, S-58H, S-58J
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH148WE	Status: Current	App Date: 05/05/1972	Rev Date: 04/28/1987
Description: Installation of Chadwick electronic weighing system C-45.
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206A, 206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH149WE	Status: Current	App Date: 05/08/1972	Rev Date: 04/28/1987
Description: Installation of Chadwick electronic weighing system C47.
TC Nos.: H1SW
Models: Bell Helicopter Textron Inc.204B, 205A, 205A-1
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH150WE	Status: Current	App Date: 04/10/1972	Rev Date: 04/28/1987
Description: Installation of Chadwick electronic weighing system C-46.
TC Nos.: 1H4
Models: Sikorsky Aircraft CorporationS-55, S-55C
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH151WE	Status: Current	App Date: 04/10/1972	Rev Date: 04/28/1987
Description: Installation of Chadwick electronic weighing system C-43.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4793NM	Status: Historical	App Date: 09/15/1989	Rev Date: 01/20/1990
Description: Fabrication of Onboard Systems Model E-73 Cargo Hook Load Cell System
TC Nos.: H9SW
Models: Bell Helicopter Textron A Division of Textron Canada222, 222B, 222U
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 13915 NW 3rd Court, Vancouver, WA 98685, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4904NM	Status: Current	App Date: 09/15/1989	Rev Date: 10/07/2021
Description: Fabrication, installation, and inspection of onboard systems model E-53 cargo hook load cell system.
TC Nos.: H4EU
Models: Airbus HelicoptersAS332C1, AS332L1 Eurocopter FranceAS332C, AS332L, SA330J
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4904NM	Status: Historical	App Date: 09/15/1989	Rev Date: 03/03/1993
Description: Fabrication, installation, and inspection of onboard systems model E-53 cargo hook load cell system.
TC Nos.: H4EU
Models: Eurocopter FranceAS332C, AS332L, SA330J
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 13915 NW 3rd Court, Vancouver, WA 98685, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4904NM	Status: Historical	App Date: 09/15/1989	Rev Date: 06/06/2018
Description: Fabrication, installation, and inspection of onboard systems model E-53 cargo hook load cell system.
TC Nos.: H4EU
Models: Airbus HelicoptersAS332C1, AS332L1 Eurocopter FranceAS332C, AS332L, SA330J
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4908NM	Status: Historical	App Date:	Rev Date: 11/05/1990
Description: Fabrication and installation of Onboard Systems Model E-51 cargo hook load cell system.
TC Nos.: H3WE
Models: MD Helicopter Inc.369D, 369E, 369F
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4908NM	Status: Historical	App Date: 03/20/1990	Rev Date: 10/03/2008
Description: Fabrication and installation of Onboard Systems Model E-51 cargo hook load cell system.
TC Nos.: H3WE
Models: MD Helicopter Inc.369D, 369E, 369F, 369FF, 369HE, 369HM, 369HS, 500N, 600N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4928NM	Status: Historical	App Date: 03/10/1990	Rev Date: 09/27/2007
Description: Fabrication, installation, and inspection of onboard systems Model E-48 cargo hook load cell system.
TC Nos.: H1IN
Models: Eurocopter FranceSA.315B Alouette III
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4928NM	Status: Historical	App Date:	Rev Date: 05/25/1990
Description: Fabrication, installation, and inspection of onboard systems Model E-48 cargo hook load cell system.
TC Nos.: H1IN
Models: Eurocopter FranceSA.315B Alouette III
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 13915 NW 3rd Court, Vancouver, WA 98685, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4928NM	Status: Historical	App Date: 03/10/1990	Rev Date: 11/15/2018
Description: Fabrication, installation, and inspection of onboard systems Model E-48 cargo hook load cell system.
TC Nos.: H1IN
Models: Eurocopter FranceSA.315B Alouette III
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4932NM	Status: Historical	App Date:	Rev Date: 05/25/1990
Description: Fabrication, installation, and inspection, of Onboard Systems Model E-45 Cargo hook load cell system.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206A, 206B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4935NM	Status: Historical	App Date:	Rev Date: 01/17/1997
Description: Fabrication of Onboard Systems Model E-72 Cargo Hook Load Cell System.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206L, 206L-1, 206L-3, 206L-4, 407
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4986NM	Status: Historical	App Date:	Rev Date: 11/21/1990
Description: Fabrication, installation, and inspection of onboard systems model E-74 cargo hook load cell system.
TC Nos.: H13EU
Models: Eurocopter Deutschland GmbHMBB-BK 117 A-1, MBB-BK 117 A-3, MBB-BK 117 B-1
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5707NM	Status: Historical	App Date:	Rev Date: 12/09/1997
Description: Fabrication, installation, and inspection of Onboard Systems model200-088-01 or 200-088-02 (without load weigh) or 200-089-01 or200-089-02 (with load weigh) cargo hook suspension system.
TC Nos.: H13WE, H1SW, H4SW
Models: Bell Helicopter Textron204B, 205A, 205A-1, 212, 412, 412EP, UH-1H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5737NM	Status: Historical	App Date:	Rev Date: 07/27/1992
Description: Replacement of Bell magnesium cargo hook bumper and ring P/N 204-072-901-1 or -3 and 204-072-905-3, respectively, with Onboard bumper ring kit No. 210-092-00. Fabrication, installation, and inspection of Onboard Systems Model 210-092-00 bumper ring kit.
TC Nos.: H1SW, H4SW
Models: Bell Helicopter Textron204B, 205A, 205A-1, 212, 412
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5758NM	Status: Historical	App Date:	Rev Date: 08/12/1992
Description: Fabrication, installation, and inspection of Onboard model200-095-00 multi channel electrical slip-ring kit for cargo hook suspension system.
TC Nos.: H1SW, H4SW
Models: Bell Helicopter Textron204B, 205A, 205A-1, 212, 412
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5780NM	Status: Historical	App Date: 09/09/1992	Rev Date: 10/13/1992
Description: Fabrication of Onboard Systems model E-46 cargo hook load weigh system.
TC Nos.: 1H11
Models: Sikorsky Aircraft CorporationS-58A, S-58B, S-58BT, S-58C, S-58D, S-58DT, S-58E, S-58ET, S-58F, S-58FT, S-58G, S-58H, S-58HT, S-58J, S-58JT
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH695NW	Status: Current	App Date: 11/09/1978	Rev Date: 08/02/1990
Description: Installation of Model 2512 weighing system.
TC Nos.: 7H1, H1IN
Models: Eurocopter FranceSA 318C-Alouette Astazou, SA.315B Alouette III, SA.316B Alouette III, SA.316C Alouette III, SA.319B Alouette III, SE.3160 Alouette III
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH695NW	Status: Historical	App Date:	Rev Date: 08/02/1990
Description: Installation of Model 2512 weighing system.
TC Nos.: H1IN
Models: Eurocopter FranceSA.315B Alouette III, SA.316B Alouette III, SA.316C Alouette III, SA.319B Alouette III, SE.3160 Alouette III
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH71NW	Status: Current	App Date: 09/26/1973	Rev Date: 04/28/1987
Description: Installation of electric weighing system.
TC Nos.: H1IN
Models: Eurocopter FranceSA.316B Alouette III, SA.319B Alouette III, SE.3160 Alouette III
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH733NW	Status: Current	App Date: 12/08/1978	Rev Date: 08/02/1990
Description: Installation of weighing system
TC Nos.: H1SW, H4SW
Models: Bell Helicopter Textron Inc.204B, 205A, 205A-1, 212, 412
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH759NW	Status: Current	App Date: 04/05/1979	Rev Date: 08/08/1990
Description: Installation of Model 2539 weighing system
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206A, 206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH770NW	Status: Current	App Date: 03/19/1979	Rev Date: 08/02/1990
Description: Installation of a weighing system.
TC Nos.: 1H11, 1H4
Models: Sikorsky Aircraft CorporationS-55, S-55B, S-55C, S-58A, S-58B, S-58BT, S-58C, S-58D, S-58DT, S-58E, S-58ET, S-58F, S-58FT, S-58G, S-58H, S-58HT, S-58J
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH829NW	Status: Current	App Date: 05/31/1979	Rev Date: 08/08/1990
Description: Installation of a weighing system.
TC Nos.: H3WE
Models: MD Helicopter Inc.369, 369A, 369D, 369E, 369F, 369H, 369HE, 369HM, 369HS
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00369SE	Status: Historical	App Date:	Rev Date: 07/27/2000
Description: Fabrication and installation of Onboard Systems model 528-010-00 cargo hook.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206L, 206L-1, 206L-3, 206L-4, 407
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00406SE	Status: Historical	App Date:	Rev Date: 05/04/2001
Description: Fabrication and installation of Onboard Systems Model 200-189-00 cargo hook kit.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206A, 206B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00407SE	Status: Historical	App Date:	Rev Date: 05/04/2001
Description: Fabrication and installation of Onboard Systems Model 200-187-00 cargo hook kit.
TC Nos.: H3WE
Models: MD Helicopter Inc.369D, 369E, 369F, 369FF, 369HE, 369HM, 369HS, 500N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00408SE	Status: Historical	App Date:	Rev Date: 01/30/1997
Description: Fabrication and installation of Onboard Systems Model E-62 cargo hook load weigh system.
TC Nos.: H6SW
Models: Bell Helicopter Textron214B, 214B-1
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00418SE	Status: Historical	App Date:	Rev Date: 05/01/2001
Description: Fabrication of Onboard Systems Model 200-195-00 (without load weigh) and 200-196-00 (with load weigh) Cargo Hook Suspension Systems.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206L, 206L-1, 206L-3, 206L-4, 407
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00439SE	Status: Historical	App Date:	Rev Date: 05/04/2001
Description: Fabrication and installation of Onboard Systems Model 200-190-00 Cargo Hook Kit.
TC Nos.: H9EU
Models: Eurocopter FranceAS-350 Series, AS-350B, AS-350B1, AS-350B2, AS-350BA, AS-350D
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00538SE	Status: Historical	App Date:	Rev Date: 07/27/2000
Description: Fabrication of Onboard Systems Model 200-232-00 cargo hook kit.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206A, 206B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00538SE	Status: Historical	App Date: 05/28/1998	Rev Date: 01/13/2003
Description: Fabrication of Onboard Systems Model 200-232-00 cargo hook kit in accordance with FAA Approved Onboard Systems Master Drawing List No. 155-039-00, dated June 26, 2000, or later FAA approved revision; and installation of this replacement cargo hook in accordance with FAA approved Onboard Systems Owner's Manual No. 120-074-00, dated June 26, 2000, or later FAA approved revision. Inspect this cargo hook kit in accordance with Onboard Systems Service Manual No. 122-002-00, dated June 12, 2000, or later FAA approved revision.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206A, 206B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00557SE	Status: Historical	App Date: 05/28/1998	Rev Date: 08/20/1998
Description: Fabrication and installation of Onboard Systems Model 200-225-00 (without load weight) or 200-226-00 (with load weigh) cargo hook suspension system
TC Nos.: H10WE
Models: Robinson Helicopter CompanyR22, R22 ALPHA, R22 BETA, R22 MARINER
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00558SE	Status: Historical	App Date:	Rev Date: 08/20/1998
Description: Fabrication and installation of Onboard Systems Model 200-229-00 Cargo Hook Kit
TC Nos.: H9EU
Models: Eurocopter FranceAS-350B, AS-350B1, AS-350B2, AS-350BA, AS-350D
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00578SE	Status: Historical	App Date:	Rev Date: 03/13/2002
Description: Fabrication of Onboard Systems Model 200-227-00 (without load weigh) or 200-228-00 (with load weigh) cargo hook suspension system per FAA Approved Onboard Systems Master Drawing List No. 155-043-00, dated August 27, 1998, or later FAA approved revision; and installation of these cargo hook systems per FAA approved Onboard Systems Owner's Manual No. 120-077-00, dated August 27, 1998, or later FAA approved revision.
TC Nos.: H11NM
Models: Robinson Helicopter CompanyR44
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00649SE	Status: Historical	App Date:	Rev Date: 12/04/1998
Description: Fabrication and installation of OnBoard System Model 200-233-00 or 200-235-00 (without load weight) or 200-234-00 or 200-236-00 (with load weight) cargo hook suspension system.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206A, 206B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00699SE	Status: Historical	App Date:	Rev Date: 01/19/2001
Description: Fabrication and installation of Onboard System Model 200-246-00 cargo hook kit.
TC Nos.: H1SW, H4SW
Models: Bell Helicopter Textron204B, 205A, 205A-1, 212, 412, 412EP
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00711SE	Status: Historical	App Date:	Rev Date: 06/30/1999
Description: Fabrication and installation of Onboard Systems Model 200-244-00 cargo hook kit.
TC Nos.: 4H12
Models: Schweizer Aircraft Corporation269C
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00765SE	Status: Historical	App Date:	Rev Date: 05/21/2001
Description: Fabrication and installation of Onboard Systems Model 200-239-00 (H-frame) or 200-240-00 (frame swing) cargo hook kit in accordance with FAA Approved Onboard Systems Master Drawing List No. 155-044-00, Revision 2, dated October 5, 2000, or later FAA approved revision.
TC Nos.: H1IN
Models: Eurocopter FranceSA.315B Alouette III
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00808SE	Status: Historical	App Date:	Rev Date: 06/05/2000
Description: Fabrication of Onboard Systems Model 200-263-00 (without load weigh) or 200-254-00 (with load weigh) Big Mouth Cargo hook kit.
TC Nos.: H3EU
Models: Eurocopter Deutschland GmbHBO-105S
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00850SE	Status: Historical	App Date:	Rev Date: 12/15/2000
Description: Fabrication, installation, and inspection of Onboard Systmes cargo hook kit.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206L, 206L-1, 206L-3, 206L-4, 407
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00896SE	Status: Historical	App Date:	Rev Date: 05/17/2001
Description: Fabrication, installation, and inspection of Onboard Model 200-267-00 cargo hook systems.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206A, 206B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00897SE	Status: Historical	App Date:	Rev Date: 03/26/2001
Description: Fabrication and installation of Onboard Model 200-270-00 (H-Frame) or 200-271-00 (Frame Swing) cargo hook system in accordance with Onboard Master Drawing List No. 155-065-00, dated January 26, 2001, or later FAA approved revision. Approval applies only to models SA315B previously equipped with a Siren model A90B hook, or Breeze-Eastern 14027-4 hook per STC SH1735SW.
TC Nos.: H1IN
Models: Eurocopter FranceSA.315B Alouette III
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 11212 NW St. Helens Road, Portland, OR 97231, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00920SE	Status: Historical	App Date:	Rev Date: 05/29/2001
Description: Fabrication and installation of Onboard Systems Model 200-262-00 (without load weigh) or 200-263-00 (with load weigh) cargo hook suspension system in accordance with FAA Approved Onboard Systems Master Drawing List No. 155-059-00, Revision 0, dated January 15, 2001, or later FAA approved revision.
TC Nos.: H10WE
Models: Robinson Helicopter CompanyR22, R22 ALPHA, R22 BETA, R22 MARINER
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Onboard Systems 13915 NW 3rd Court, Vancouver, WA 98685, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02217SE	Status: Current	App Date: 08/31/2010	Rev Date: 05/31/2022
Description: Fabrication of Onboard Systems Single-Hook and Double-Hook Cargo Hook Kit
TC Nos.: H88EU
Models: Airbus Helicopters Deutschland GmbHEC135 P1, EC135 P2, EC135 P2+, EC135 T1, EC135 T2, EC135 T2+, EC135P3, EC135T3
ACO: AIR-770: West Certification Branch SEA

STC Holder: Onboard Systems 13915 NW 3rd Court, Vancouver, WA 98685, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02724LA	Status: Historical	App Date: 03/15/2019	Rev Date: 03/16/2020
Description: Installation of Onboard Systems International Human External Cargo (HEC) Hook System
TC Nos.: H2SW
Models: Bell Textron Canada Limited206L, 206L-1, 206L-3, 206L-4, 407
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200

STC Holder: Onboard Systems 13915 NW 3rd Court, Vancouver, WA 98685, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02724LA	Status: Current	App Date: 03/15/2019	Rev Date: 10/07/2021
Description: Installation of Onboard Systems International Human External Cargo (HEC) Hook System
TC Nos.: H2SW
Models: Bell Textron Canada Limited206L, 206L-1, 206L-3, 206L-4, 407
ACO: AIR-770: West Certification Branch SEA