Abstract: Prognostic systems and methods for providing adaptive Time Between Overhaul (TBO) value for one or more Line Replaceable Units (LRUs) are provided. In one embodiment, the LRU prognostic system includes a first LRU, an aircraft position data source configured to monitor the position of an aircraft carrying the LRU prognostic system, and a controller coupled to the first LRU and to the aircraft position data source. The controller is configured to: (i) estimate the degradation of the first LRU based at least in part on the duration of time the aircraft position resides in any one of a plurality of different environmental zones while the aircraft is operational, and (ii) calculate an adaptive TBO value for the first LRU utilizing the estimated LRU degradation.

Abstract: Prognostic systems and methods for providing adaptive Time Between Overhaul (TBO) value for one or more Line Replaceable Units (LRUs) are provided. In one embodiment, the LRU prognostic system includes a first LRU, an aircraft position data source configured to monitor the position of an aircraft carrying the LRU prognostic system, and a controller coupled to the first LRU and to the aircraft position data source. The controller is configured to: (i) estimate the degradation of the first LRU based at least in part on the duration of time the aircraft position resides in any one of a plurality of different environmental zones while the aircraft is operational, and (ii) calculate an adaptive TBO value for the first LRU utilizing the estimated LRU degradation.

Abstract: A radio terminal interface includes a signal processor and a controller. The signal processor has a TDMA mode of operation and an AMPS mode of operation. The controller composes signals for registering first and second Mobile Identification Numbers (MINs) assigned to the radio terminal interface in a cellular radio system. The controller also identifies page requests received while the radio terminal interface is in an idle state, and responds to received page requests specifying the first MIN by composing page responses specifying the first MIN. The controller responds to received page requests specifying the second MIN by composing page responses specifying the second MIN. The controller responds to initial traffic channel designation messages received by the radio terminal interface by configuring the signal processor in its TDMA mode, and responds to initial voice channel designation messages by configuring the signal processor in its AMPS mode.