The Prognostics Framework's run-time reasoner reads raw or pre-processed operational data, BIT data and sensor data, performs processing on that data, and analyzes the data based on the system model to assess the health of the system. The reasoning results in the following functional capabilities:

Provides Fault Detection

• Identifies when a fault condition or event has occurred

Provides Diagnostic Reasoning

• Performs fault isolation based upon the interpretation of test results and sensor readings

Provides Prognostic Analysis / Reasoning

• Monitors degradation of signals / measurements over time
• Monitors depletion of consumable items
• Alerts when monitored items are trending toward out of tolerance conditions
• Performs heuristic reasoning (rule of thumb)
• Integrates 3^rd party prediction techniques into a common information and reporting framework

Assesses Functional and Mission Capability

• Correlates actual and impending faults to system functions
• Identifies which functions are unavailable based on fault
• Identifies missions that can/cannot be performed based on health assessment
• Identifies specific time interval within mission when function cannot be performed

Provides Condition Based Maintenance

• Accumulates use and wear factors
• Tracks preventative maintenance requirements based on time / wear / use
• Tracks the performance of preventative maintenance actions
• Performs serial number tracking of high-end components
• Closed-loop recording of the effectiveness of maintenance procedures

Reacts to Fault Events

• Annunciates fault event
• Displays fault information to users
• Launches repair procedures (IETM or simple HTML)
• Identifies spare part requirements and spares data
• Can be used to launch control/recovery procedure in reaction to a fault event (e.g., reconfigure system or change operating mode)

Compiles, interprets and displays trend data; creates data logs

Provides links to IETMs, PMCS, supply systems based on specific fault or equipment condition