panel 56 seat element 60 and backrest element 62 in some embodiments additional input for the control logic of the jump seat supplemental heat system may be provided by the aircraft environmental control systems ecs 210 for example the ecs 210 may provide as indicated at 212 an analog discreet signal e g from an ecs 210 misc pca card or the like that indicates that a predetermined number of air conditioning packs are operating that signal may then be used to energize the heated jump seat control relays 208 in some embodiments the predetermined number of air conditioning packs may be one or two or more packs in some embodiments it may be preferable to also include other control logic criteria 214 as part of control logic 200 embodiments may include some or all of the following criteria 214 in addition other control logic criteria 214 are possible for example some embodiments may comprise checking at 216 an internal temperature set point of the heated seat to ensure that the seat is operating within design parameters temperatures within the set point may result in a jump seat on signal and temperatures outside the set point may result in a jump seat off signal for example in some embodiments the seat internal temperature set point may be set to 100 u00b0 f and for internal seat temperatures below that set point the control logic process 216 will deliver a seat on.