RAIM Prediction Query Strings

Required roles: none
Base endpoint: https://ibonav.aero/tools/raim-prediction
Reference documents: none
Attribution: none
Data sources: none
Last updated: 18 OCT 2026

Query string parameters fill in the ibonav.aero RAIM Availability Prediction form and can run the prediction when the page opens. The page needs a ibonav.aero member login.

Parameters

Parameter Value Description
date YYYY-MM-DD Scenario start date (UTC). Missing or invalid → today.
type aerodromes or fir Location type. Missing → aerodromes if airports is given, else fir if fir is given.
airports ICAO location indicator(s), comma-separated Aerodromes, at most 5. Used when the location type is aerodromes.
fir one ICAO location indicator FIR. Used when the location type is fir.
rnp terminal_rnp10, approach_rnp03, approach_rnp01 Requirement: RNP 1.0 Terminal, RNP 0.3 Approach (default), RNP 0.1 Approach.
algorithm FD or FDE RAIM algorithm. Default FD.
sa on or off Selective Availability. Default on.
baro yes or no Barometric aiding. Default no.
mask 2.0, 5.0, 7.5, 10.0, 12.5 Mask angle in degrees. Default 5.0.
egnos 1 Checks Include EGNOS NOTAMs.
autorun 1 Runs the prediction when the location list has loaded.

Rules

  • airports and fir are checked against the location list of the page; unknown indicators are dropped. If none remains, the form cannot be submitted and autorun has no effect.
  • When both airports and fir are given, type decides which one is used; without type, airports is used.
  • Values of rnp and mask must be written exactly as in the table; other unrecognised values are ignored and the default stays.

Examples

# One aerodrome, run at once
https://ibonav.aero/tools/raim-prediction?airports=LTBA&autorun=1

# Two aerodromes with other settings, run at once
https://ibonav.aero/tools/raim-prediction?airports=LTBA,LTAI&rnp=terminal_rnp10&algorithm=FDE&sa=off&baro=yes&mask=7.5&egnos=1&autorun=1

# A FIR, run at once
https://ibonav.aero/tools/raim-prediction?type=fir&fir=LTAA&autorun=1

# Filled only, for a given date (the viewer runs it)
https://ibonav.aero/tools/raim-prediction?airports=LTAC&date=2026-11-01&rnp=approach_rnp01