Installation of a two Ku/Ka-band satcom systems (KSAT) on airliners has become commonplace. Modems are being integrated into the Outside Antenna Equipment rather than in the Modman. These dynamics are opening the door to fail-operational (Fail-0p) KSAT. Fail-Op KSAT, in turn, opens the door to possible use as a required radio service (safety communications - ATC data link). That may provide for a tradeoff between installing a second L-band satcom (Viasat/Inmarsat or Iridium) and a second KSAT.
