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No. of STCs: 62

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1454NM	Status: Current	App Date: 11/16/1981	Rev Date: 02/24/1982
Description: Installation of a forward left hand transmission fitting assembly fabricated from 4340 alloy steel
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1784NM	Status: Current	App Date: 12/08/1982	Rev Date: 01/25/1983
Description: Installation of snow pads and step
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 3650 Biddle Road, Medford, OR 97504, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH2387NM	Status: Current	App Date: 04/26/1984	Rev Date: 05/29/1984
Description: Installation of a vacuum powered horizontal situation indicator system to supplement the existing electrical system.
TC Nos.: H2SW
Models: Bell Helicopter Textron (Canada)206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 3650 Biddle Road, Medford, OR 97504, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH2388NM	Status: Current	App Date: 11/10/1983	Rev Date: 05/11/1984
Description: Installation of an Electronics International Digital Temperature Indicator with related thermocouples, adapters and harness to monitor the temperature fo the main gear box bearings.
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 3650 Biddle Road, Medford, OR 97504, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH2389NM	Status: Current	App Date: 11/10/1983	Rev Date: 11/10/1983
Description: Installation of an Electronics International Digital Temperature Indicator with related thermocouples, adapters and harness to monitor the temperature fo the main gear box bearings.
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH2923NM	Status: Current	App Date: 01/14/1985	Rev Date: 07/08/1985
Description: The Pilot-in-Command position to be located in the left seat
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3183NM	Status: Current	App Date: 01/14/1985	Rev Date: 08/20/1985
Description: Pilot-in-Command position to be in left seat with all normal controls and control-mounted switches at that crew station.
TC Nos.: 6H1
Models: Hiller AviationUH-12
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3184NM	Status: Current	App Date: 01/14/1985	Rev Date: 08/26/1985
Description: Pilot-in-Command position to be in left seat with all normal controls and control-mounted switches at that crew station.
TC Nos.: 6H1
Models: Hiller AviationUH-12
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3185NM	Status: Current	App Date: 01/14/1985	Rev Date: 08/26/1985
Description: Pilot-in-Command position to be in left seat with all normal controls and control-mounted switches at that crew station
TC Nos.: 6H1
Models: Hiller AviationUH-12
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3188NM	Status: Current	App Date: 01/14/1985	Rev Date: 09/16/1985
Description: Pilot-in-Command position to be in either left or right seat with fully redundant controls and control-mounted switches
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3189NM	Status: Current	App Date: 01/14/1985	Rev Date: 09/16/1985
Description: Pilot-in-Command position to be in either left or right seat with fully redundant controls and control-mounted switches
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 3650 Biddle Road, Medford, OR 97504, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3328NM	Status: Current	App Date: 09/13/1985	Rev Date: 02/21/1986
Description: Pilot-in-command position to be in either left or right seat with fully redundant controls and control-mounted switches
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH3835NM	Status: Current	App Date: 03/24/1987	Rev Date: 06/05/1987
Description: Modification of the front right seat back so that it may fold down to facilitate MedEvac operations.
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4380NM	Status: Current	App Date: 04/07/1988	Rev Date: 12/08/1988
Description: The Pilot-In-Command postiion to be located in the left seat.
TC Nos.: H2SW
Models: Bell Helicopter Textron Canada Limited206B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH480NW	Status: Current	App Date: 07/06/1977	Rev Date: 08/08/1977
Description: Installation of a left front Perkins Plastic bubble door
TC Nos.: H6SW
Models: Bell Helicopter Textron Inc.214B-1
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5125NM	Status: Historical	App Date: 06/04/1987	Rev Date: 05/01/2013
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints.
TC Nos.: 1H15, R00004SE
Models: Croman CorporationSH-3H Sikorsky AircraftS-61N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 3650 Biddle Road, Medford, OR 97504, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5125NM	Status: Historical	App Date:	Rev Date: 04/15/1991
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5125NM	Status: Historical	App Date: 06/04/1987	Rev Date: 04/06/2007
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints.
TC Nos.: 1H15, R00004SE
Models: Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5125NM	Status: Current	App Date: 06/04/1987	Rev Date: 03/18/2014
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints.
TC Nos.: 1H15, R00004SE
Models: Croman CorporationSH-3H Sikorsky AircraftS-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5654NM	Status: Historical	App Date: 03/26/1991	Rev Date: 04/04/2011
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints in accordance with an FAA-approved copy of Croman Master Drawing List No. JS1315, dated December 7, 1990, or later FAA-approved revision.
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A (U.S. Navy HSS-2), S-61A (U.S. Navy SH-3A), S-61A (USAF CH-3B)
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5654NM	Status: Current	App Date: 03/26/1991	Rev Date: 01/22/2020
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5654NM	Status: Historical	App Date: 03/26/1991	Rev Date: 11/05/2014
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH5654NM	Status: Historical	App Date:	Rev Date: 03/17/1992
Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints. (Restricted category ONLY)
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A (U.S. Navy HSS-2), S-61A (U.S. Navy SH-3A), S-61A (USAF CH-3B)
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Ave C, White City, OR 97503		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00218IB	Status: Current	App Date: 04/19/2024	Rev Date: 10/07/2024
Description: Installation of the Cockpit Door
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Ave C, White City, OR 97503		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00220IB	Status: Current	App Date: 04/19/2024	Rev Date: 10/07/2024
Description: Installation of Replacement Avionics Shelves
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, Oregon 97501		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00283SE	Status: Historical	App Date: 09/15/1995	Rev Date: 03/21/2024
Description: Removal of a 50 inch section from the forward fuselage between stations 110 and 160 and reinstallation of forward cabin with associated fabricated parts.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, Oregon 97501		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00283SE	Status: Current	App Date: 09/15/1995	Rev Date: 03/21/2024
Description: Removal of a 50 inch section from the forward fuselage between stations 110 and 160 and reinstallation of forward cabin with associated fabricated parts.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00319SE	Status: Current	App Date: 10/02/1996	Rev Date: 06/07/2013
Description: Modification of Part Number S6137-23009-6 main transmission rear cover per
TC Nos.: 1H15, H2EA
Models: Sikorsky AircraftS-61L, S-61N, S-61NM Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00319SE	Status: Historical	App Date: 10/02/1996	Rev Date: 02/20/2013
Description: Modification of Part Number S6137-23009-6 main transmission rear cover
TC Nos.: 1H15, H2EA
Models: Sikorsky AircraftS-61N Sikorsky Aircraft CorporationS-61A
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, Oregon 97501		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00427SE	Status: Current	App Date: 01/26/1997	Rev Date: 03/21/2024
Description: Fabrication and installation of a Helipro Model H9661N01-01, -03, -05, -07, -51, -53, -55, -57, -59 or -61 logging utility system
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 3100 Willow Springs Rd.,Central Point, OR 97502		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00814SE	Status: Current	App Date: 12/12/1998	Rev Date: 03/21/2024
Description: Fabrication of reinforcement kit - aft fuselage station 493. For model S61A, applies to S/N 61094. For model S61NM, applies to S/N 66454
TC Nos.: 1H15, H2EA
Models: Sikorsky Aircraft CorporationS-61A, S-61L, S-61N, S-61NM
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01051DE	Status: Current	App Date: 04/21/2020	Rev Date: 06/05/2020
Description: Installation of Croman Corporation Electric Heater
TC Nos.: H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch DEN

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97501		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01264SE	Status: Current	App Date: 06/09/2003	Rev Date: 03/21/2024
Description: Fabrication of Helipro replacement windshields
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N, S-61NM
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01426SE	Status: Historical	App Date: 05/22/2003	Rev Date: 07/29/2004
Description: Fabrication and installation of components for a left seat pilot-in-command operation.
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01426SE	Status: Historical	App Date: 05/22/2003	Rev Date: 02/03/2011
Description: Fabrication and installation of components for a left seat pilot-in-command operation.
TC Nos.: 1H15, H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61A, S-61L, S-61N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01426SE	Status: Current	App Date: 05/22/2003	Rev Date: 09/10/2013
Description: Fabrication and installation of components for a left seat pilot-in-command operation.
TC Nos.: 1H15, H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky AircraftS-61L, S-61N, S-61NM Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01427SE	Status: Historical	App Date: 05/22/2003	Rev Date: 11/09/2010
Description: Fabrication and installation of a fixed main landing gear.
TC Nos.: H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61A
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01427SE	Status: Historical	App Date: 05/22/2003	Rev Date: 07/28/2004
Description: Fabrication and installation of a fixed main landing gear.
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01427SE	Status: Current	App Date: 05/22/2003	Rev Date: 04/05/2016
Description: Installation of S-61L fixed main landing gear
TC Nos.: H2EA, R00004SE, R00014LA
Models: Carson Helicopters Inc.SH-3H Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01517SE	Status: Current	App Date: 03/12/2003	Rev Date: 06/09/2025
Description: Fabrication and installation of an internal fire retardant tank
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01517SE	Status: Historical	App Date: 03/12/2003	Rev Date: 03/11/2005
Description: ONE-ONLY STC: Fabrication and installation of an internal fire retardant tank on SH-3H, serial number 148966.
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01517SE	Status: Historical	App Date: 03/12/2003	Rev Date: 04/19/2007
Description: ONE-ONLY STC: Fabrication and installation of an internal fire retardant tank on SH-3H, serial numbers 148966, 149713 and 152109.
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01534SE	Status: Current	App Date: 09/13/2004	Rev Date: 06/03/2013
Description: Installation of the transmission input modification to the main gear box
TC Nos.: 1H15
Models: Sikorsky AircraftS-61L, S-61N, S-61NM
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01534SE	Status: Historical	App Date: 09/13/2004	Rev Date: 04/21/2005
Description: Installation of the Transmission Input Modification to the main gear box of the Sikorsky S-61N helicopter in accordance McClenahan Engineering Document DM0450-4, Revision IR, dated December 23, 2004, or later FAA approved revision.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01627SE	Status: Current	App Date: 11/29/2005	Rev Date: 01/06/2006
Description: Limit the standard passenger seating configuration to 9 or less.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01755SE	Status: Historical	App Date: 10/08/2004	Rev Date: 07/30/2014
Description: Installation of the Main Rotor Head Modification
TC Nos.: R00004SE, R00014LA
Models: Carson Helicopters Inc.SH-3H Croman CorporationSH-3H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01755SE	Status: Historical	App Date: 10/08/2004	Rev Date: 06/23/2014
Description: Installation of the Main Rotor Head Modification
TC Nos.: R00004SE, R00014LA
Models: Carson Helicopters Inc.SH-3H Croman CorporationSH-3H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01755SE	Status: Current	App Date: 10/08/2004	Rev Date: 04/21/2016
Description: Installation of the Main Rotor Head Modification
TC Nos.: R00004SE, R00014LA
Models: Carson Helicopters Inc.SH-3H Croman CorporationSH-3H
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01755SE	Status: Historical	App Date: 10/08/2004	Rev Date: 04/19/2007
Description: Installation of the Main Rotor Head Modification
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR01981SE	Status: Current	App Date: 11/20/2007	Rev Date: 02/17/2010
Description: Fabrication and installation of an internal fire retardant tank
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02037SE	Status: Current	App Date: 01/22/2009	Rev Date: 12/04/2009
Description: Fabrication and installation of improved pressure refueling shut-off system
TC Nos.: R00004SE
Models: Croman CorporationSH-3H
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02077SE	Status: Historical	App Date: 06/09/2010	Rev Date: 07/12/2010
Description: Installation of the Observer Seat CRCS100-01
TC Nos.: H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61A
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02077SE	Status: Current	App Date: 06/09/2010	Rev Date: 05/03/2017
Description: Installation of the Observer Seat CRCS100-01
TC Nos.: H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02087SE	Status: Current	App Date: 04/08/2010	Rev Date: 09/02/2010
Description: Limit the standard passenger seating configuration to 19 or less on the Sikorsky S-61N rotorcraft
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02190SE	Status: Current	App Date: 03/17/2011	Rev Date: 09/07/2011
Description: Installation of steel transmission fitting fabricated in accordance with Croman Drawing S-6120-62113-CRO41, Revision D, dated January 8, 1982, or later Federal Aviation Administration (FAA) approved revision; installed in accordance with Croman Installation Instructions S-6120-62113-CRO41-Inst, Revision IR, dated August 10, 2011, or later FAA- approved revision.
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02267SE	Status: Historical	App Date: 09/04/2012	Rev Date: 03/26/2013
Description: Fabrication of replacement transmission fittings
TC Nos.: 1H15, H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky AircraftS-61N Sikorsky Aircraft CorporationS-61A
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02267SE	Status: Current	App Date: 09/04/2012	Rev Date: 12/01/2015
Description: Fabrication of replacement transmission fittings
TC Nos.: 1H15, H2EA, R00004SE
Models: Croman CorporationSH-3H Sikorsky AircraftS-61L, S-61N, S-61NM Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97501		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02279AK	Status: Current	App Date: 10/04/2006	Rev Date: 04/06/2023
Description: Installation of dual Rockwell Collins FDS 2000 flight displays, dual AHS 3000 attitude and heading reference systems, dual Garmin GNS 530 navigation systems and supporting avionics equipment
TC Nos.: 1H15
Models: Sikorsky AircraftS-61L, S-61N, S-61NM, S-61R
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02583SE	Status: Current	App Date: 09/01/2017	Rev Date: 01/16/2018
Description: Installation of a 9 passenger seat configuration for side-facing seats
TC Nos.: 1H15
Models: Sikorsky AircraftS-61N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02601SE	Status: Current	App Date: 04/18/2017	Rev Date: 06/18/2018
Description: Fabrication and installation of an internal fire retardant tank
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97503, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR02692SE	Status: Current	App Date: 02/24/2020	Rev Date: 06/24/2020
Description: Installation of T58-GE-402 engines
TC Nos.: H2EA
Models: Sikorsky Aircraft CorporationS-61A
ACO: AIR-770: West Certification Branch SEA

STC Holder: Croman Corporation 801 Avenue C, White City, OR 97501		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR09236RC	Status: Current	App Date: 11/10/1998	Rev Date: 04/06/2023
Description: Installation of a Modular Harness
TC Nos.: 1H15
Models: Sikorsky Aircraft CorporationS-61L, S-61N
ACO: AIR-770: West Certification Branch SEA