SR01517SEFuel systems
Fabrication and installation of an internal fire retardant tank.
FAA holder: Croman Corporation
FAA-listed STC holder
Croman Corporation STCs
The Jun 30, 2026 FAA DRS snapshot lists 27 selected supplemental type certificates with status Current under Croman Corporation. The records span 7 public aircraft directories and 7 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.
27
listed Current at snapshot
7
aircraft directories
7
modification categories
Jun 9, 2025
latest recorded revision
Modification mix
Other aircraft modifications11
Cabin and interiors6
Fuel systems3
Aircraft structures2
Avionics2
Cargo and special mission2
Landing gear and brakes1
Recently revised records
Showing the 27 most recently revised records. Category directories provide the complete paginated discovery path.
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SR00283SECabin and interiors
Removal of a 50 inch section from the forward fuselage between stations 110 and 160 and reinstallation of forward cabin with associated fabricated parts.
FAA holder: Croman Corporation
SR00427SEOther aircraft modifications
Fabrication and installation of a Helipro Model H9661N01-01, -03, -05, -07, -51, -53, -55, -57, -59 or -61 logging utility system.
FAA holder: Croman Corporation
SR00814SEAircraft structures
Fabrication of reinforcement kit - aft fuselage station 493. For model S61A, applies to S/N 61094. For model S61NM, applies to S/N 66454.
FAA holder: Croman Corporation
SR01264SEOther aircraft modifications
Fabrication of Helipro replacement windshields.
FAA holder: Croman Corporation
SR09236RCOther aircraft modifications
Installation of a Modular Harness.
FAA holder: Croman Corporation
SR02692SEOther aircraft modifications
Installation of T58-GE-402 engines.
FAA holder: Croman Corporation
SR01051DEOther aircraft modifications
Installation of Croman Corporation Electric Heater.
FAA holder: Croman Corporation
SH5654NMCargo and special mission
Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints.
FAA holder: Croman Corporation
SR02601SEFuel systems
Fabrication and installation of an internal fire retardant tank.
FAA holder: Croman Corporation
SR02583SECabin and interiors
Installation of a 9 passenger seat configuration for side-facing seats.
FAA holder: Croman Corporation
SR02077SECabin and interiors
Installation of the Observer Seat CRCS100-01.
FAA holder: Croman Corporation
SR01755SEOther aircraft modifications
Installation of the Main Rotor Head Modification.
FAA holder: Croman Corporation
SR01427SELanding gear and brakes
Installation of S-61L fixed main landing gear.
FAA holder: Croman Corporation
SR02267SEOther aircraft modifications
Fabrication of replacement transmission fittings.
FAA holder: Croman Corporation
SH5125NMCargo and special mission
Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints.
FAA holder: Croman Corporation
SR01426SECabin and interiors
Fabrication and installation of components for a left seat pilot-in-command operation.
FAA holder: Croman Corporation
SR00319SEOther aircraft modifications
Modification of Part Number S6137-23009-6 main transmission rear cover per.
FAA holder: Croman Corporation
SR01534SEOther aircraft modifications
Installation of the transmission input modification to the main gear box.
FAA holder: Croman Corporation
SR02190SEOther aircraft modifications
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.
FAA holder: Croman Corporation
SR02087SECabin and interiors
Limit the standard passenger seating configuration to 19 or less on the Sikorsky S-61N rotorcraft.
FAA holder: Croman Corporation
SR01981SEFuel systems
Fabrication and installation of an internal fire retardant tank.
FAA holder: Croman Corporation
SR02037SEOther aircraft modifications
Fabrication and installation of improved pressure refueling shut-off system.
FAA holder: Croman Corporation
SR01627SECabin and interiors
Limit the standard passenger seating configuration to 9 or less.
FAA holder: Croman Corporation