The C6533/ARC Communications System Control unit (or “Intercom”) is a communication device that provides audio monitoring and voice transmission selection capabilities to multiple radio channels, as well as internal communications between pilot and crew on rotary wing aircraft.
The Communications System Control unit is in use by five types of US Army rotary wing aircraft and their variations; AH-1, CH-47D, OH-58A/C, UH-1H/1V, and UH-60A/L. Under a U.S. Army contract, ACI Technologies Successfully redesigned and tested a replacement for the C6533A/ARC, which is compatible to its predecessor.
ACI Technologies is the only current approved source for the C6533A communication system.
A replacement for the C6533/ARC has been successfully redesigned and tested for compatibility to its predecessor. The new unit, designated C6533A maintains the same physical characteristics, user interface, and performance. Production units have been installed into both the UH60A/L and the CH-47 for system compatibility checks. The C6533A system has satisfactorily met the original design requirements of providing a drop-in replacement system using readily available, COTS components. The redesigned system is essentially transparent to the user community with the exception of an enhanced volume control. Repair has been simplified by the reduction in number of sub-assemblies and utilization of commercially available components.
