SR11923SERotorcraft modifications
Installation of Helicopter Transport Services, LLC Shock Absorber HTS-2000.
FAA holder: Helicopter Transport Services LLC
Aircraft STC directory
Helicopter Transport Services CH-54A STCs
The Jun 30, 2026 FAA DRS snapshot contains 20 selected supplemental type certificates with status Current whose public applicability data names the Helicopter Transport Services CH-54A. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
20
listed Current at snapshot
4
holder directories
6
modification categories
Mar 11, 2025
latest recorded revision
Modification demand surface
Other aircraft modifications12
Rotorcraft modifications3
Cargo and special mission2
Fuel systems1
Electrical systems1
Engine and powerplant1
Recently revised CH-54A STCs
Showing the 20 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SR11810SECargo and special mission
Installation of Helicopter Transport Services, LLC External Load Indicating System.
FAA holder: Helicopter Transport Services LLC
SR02777SEOther aircraft modifications
Installation of a Load Beam.
FAA holder: Helicopter Transport Services LLC
SR02754SECargo and special mission
Installation of External Cargo Container.
FAA holder: Helicopter Transport Services, LLC
SR02717SEFuel systems
Installation of Helicopter Transport Services Remote Fuel Sump System.
FAA holder: Helicopter Transport Services LLC
SR02684SERotorcraft modifications
Installation of Helicopter Transport Services, LLC (HTS) lightweight firefighting refill pump.
FAA holder: Helicopter Transport Services LLC
SR00004SEOther aircraft modifications
Fabrication and installation of Erickson fire fighting system.
FAA holder: Erickson Air Crane Inc. dba Erickson Air-Crane
SR00815SEOther aircraft modifications
Fabrication and installation of Erickson Model Sea Snorkel system.
FAA holder: Erickson Air Crane Inc. dba Erickson Air-Crane
SR01209SEOther aircraft modifications
Installation of Replacement Electric Starter for Auxiliary Power Unit.
FAA holder: Helicopter Transport Services LLC
SR01241SEElectrical systems
Installation of Concorde RG-390E Lead Acid Battery.
FAA holder: Helicopter Transport Services LLC
SR02524SEOther aircraft modifications
Installation of an electically driven oil cooler and 20KVA generators.
FAA holder: Helicopter Transport Services, LLC
SR02503SEOther aircraft modifications
Installation of Additional Telemetry Unit (ATU).
FAA holder: Helicopter Transport Services LLC
SR00928SEOther aircraft modifications
Fabrication of Kawak Aviation Technologies, Inc. Model YB02854 Auxiliary Hydraulic System.
FAA holder: Helicopter Transport Services LLC
SR01192LAOther aircraft modifications
Installation of a 2,000 gallon RADS11-200 Helitank Fire Retardant System.
FAA holder: United Aeronautical Corporation
SR02055SEOther aircraft modifications
Replacement tail rotor blades, Part Numbers 65161-00001-041MII and/or 65161-00001-043MII.
FAA holder: Helicopter Transport Services LLC
SH5653NMEngine and powerplant
Re-mounting of the turbine engines and reinforcement of the associated fuselage support structure with Erickson detuned engine mounting system (DEMS).
FAA holder: Erickson Incorporaated/dba Erickson Air-Crane
SR02303SEOther aircraft modifications
Instruction for changing to alternative lubricant.
FAA holder: Helicopter Transport Services LLC
SR00506LAOther aircraft modifications
Installation of Fire Fighting System.
FAA holder: Helicopter Transport Services LLC
SR02224SERotorcraft modifications
Installation of the Helicopter Transport Services, LLC (HTS) lightweight firefighting refill pump, Part Number HTS2-PUMP.
FAA holder: Helicopter Transport Services LLC
SR00931SEOther aircraft modifications
Fabrication of Simplex Model 314 Fire Attack System.
FAA holder: Simplex Manufacturing Company