Patent ID: 9568912
Date: 2017-02-14
CPC Classifications: B64F,G01S,G05B,G07C

Claim:
1. A Line Replaceable Unit (LRU) prognostic system, comprising: a first LRU; an aircraft position data source configured to monitor a position of an aircraft carrying the LRU prognostic system; an environmental zone database storing a range of aircraft positions correlated with a plurality of different environmental zones and further storing degradation rates for at least one of a group consisting of a high humidity zone, a desert zone, a saline zone, and an ice-rich zone; and a controller coupled to the first LRU, to the aircraft position data source, and to the environmental zone database, the controller configured to: (i) estimate a degradation of the first LRU based, at least in part, on a duration of time the aircraft position resides in one or more of the plurality of different environmental zones while the aircraft is operational, as determined utilizing aircraft position and the environmental zone database, and (ii) calculate an adaptive Time Between Overhaul (TBO) value for the first LRU utilizing the estimated LRU degradation.