STC Holder: Croman Corporation

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No. of STCs: 61

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SH1784NM	Status: Current	App Date: 12/08/1982	Rev Date: 01/25/1983
TC Nos.: H2SW,
Models: Bell Helicopter Textron Canada Limited: 206B
ACO: AIR-770: West Certification Branch SEA
Installation of snow pads and step

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

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

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SH2923NM	Status: Current	App Date: 01/14/1985	Rev Date: 07/08/1985
TC Nos.: H2SW,
Models: Bell Helicopter Textron Canada Limited: 206B
ACO: AIR-770: West Certification Branch SEA
The Pilot-in-Command position to be located in the left seat

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

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

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

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

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

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SH3835NM	Status: Current	App Date: 03/24/1987	Rev Date: 06/05/1987
TC Nos.: H2SW,
Models: Bell Helicopter Textron Canada Limited: 206B
ACO: AIR-770: West Certification Branch SEA
Modification of the front right seat back so that it may fold down to facilitate MedEvac operations.

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SH4380NM	Status: Current	App Date: 04/07/1988	Rev Date: 12/08/1988
TC Nos.: H2SW,
Models: Bell Helicopter Textron Canada Limited: 206B
ACO: AIR-770: West Certification Branch SEA
The Pilot-In-Command postiion to be located in the left seat.

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

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

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

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

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

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SH5654NM	Status: Historical	App Date: 03/26/1991	Rev Date: 04/04/2011
TC Nos.: H2EA,
Models: Sikorsky Aircraft Corporation: S-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
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.

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SH5654NM	Status: Historical	App Date:	Rev Date: 03/17/1992
TC Nos.: H2EA,
Models: Sikorsky Aircraft Corporation: S-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
Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints. (Restricted category ONLY)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SR01534SE	Status: Historical	App Date: 09/13/2004	Rev Date: 04/21/2005
TC Nos.: 1H15,
Models: Sikorsky Aircraft Corporation: S-61N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500
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.

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

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

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

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

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

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

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

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

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

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

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97503, United States		Contact us to have your company added here!
STC No.: SR02190SE	Status: Current	App Date: 03/17/2011	Rev Date: 09/07/2011
TC Nos.: 1H15,
Models: Sikorsky Aircraft Corporation: S-61N
ACO: AIR-770: West Certification Branch SEA
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.

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

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

STC Holder: Croman Corporation Address: 801 Avenue C, White City, OR 97501		Contact us to have your company added here!
STC No.: SR02279AK	Status: Current	App Date: 10/04/2006	Rev Date: 04/06/2023
TC Nos.: 1H15,
Models: Sikorsky Aircraft: S-61L, S-61N, S-61NM, S-61R
ACO: AIR-770: West Certification Branch SEA
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

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

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

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

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