The Aerodrome Prediction tool calculates the predicted RAIM availability for periods of 24, 48 or 72 hours for a list of user-selected aerodromes.
The RAIM calculation can be configured to represent the receiver equipment, fault detection algorithm (Fault Detection (FD) or Fault Detection and Exclusion (FDE)) and awareness of SA (Selective Availability):
- C129 - FD/FDE - SA On/Off
- C145/146 - FDE - SA Off
For most aerodrome calculations the integrity levels will be RNP Approach, RNP1 or RNAV1.
Further options that the user can select are:
- Barometric aiding, ON / OFF / BOTH.
- Mask Angle, user configurable between -20° and +25° elevation.
The calculation results show time periods of RAIM unavailability at each aerodrome, where the calculation location is the Aerodrome Reference Point (ARP). The minimum duration of RAIM unavailability is automatically selected in accordance with the selected integrity level as specified in the applicable regulatory standard.