Aviation electronics technician (AT) is a US Navy enlisted rating or job specialty (often called MOS or AFSC by other services). At the paygrade of E-9 (master chief petty officer) ATs merge with the aviation electrician's mate (AE) rating to become avionics technicians (AV). There has been talk of completely merging the two ratings, but as yet no definite plans have been announced. Aviation electronics technicians wear the specialty mark of a winged Helium atom. Aviation electronics technicians (intermediate) perform intermediate level maintenance on aviation electronic components supported by conventional and automatic test equipment, including repair of weapons replaceable assemblies and shop replaceable assemblies and perform test equipment calibration/repair and associated test bench maintenance.Aviation electronics technicians (organizational) perform organizational level maintenance on aviation electronics systems, to include: communications, radar, navigation, antisubmarine warfare sensors, electronic warfare, data link, fire control and tactical displays with associated equipment.