RAIM/FDE Prediction

Various certification authority guidance for area navigation (RNAV) and required navigation performance (RNP) operations requires a pre-flight receiver autonomous integrity monitoring (RAIM) or fault detection and exclusion (FDE) prediction be performed to determine the availability of RAIM/FDE before commencing a flight.

Garmin provides this free RAIM/FDE Prediction service to provide high quality prediction which takes into account the performance of Garmin GPS receivers.

All fields required.

  • Per FAA AC 91-70A
  • UTC
  • Ft MSL
  • Kt

FDE is available

FDE is not available

The longest predicted FDE outage is

RAIM is available

RAIM is not available

The longest predicted RAIM outage is

GPS is available

GPS is not available

The longest predicted GPS outage is

All services are available at your destination

FDE is unavailable at your destination

RAIM is unavailable at your destination

GPS is unavailable at your destination

Your ETA is UTC

  • RAIM requires a minimum of 5 satellites but Garmin’s TSO-C129 equipment tracks up to 12 satellites in view and Garmin’s TSO-C145/-C146 equipment tracks up to 15 satellites in view
  • Garmin’s TSO-C129 equipment tracks down to 2 degrees and Garmin’s TSO-C145/-C146 equipment tracks down to 5 degrees
  • Garmin’s TSO-C145/-C146 equipment is SA aware (can determine whether SA is on for individual satellites)

Example Routes

  • KMIA HNL BOS PANC
  • KMSP DWN6.ABR J158 RAP MBW MTU J148 OAL.MOD5 KSFO
  • KFCM RST V170 DLL KMWC
  • KMWC BAE.AGUDE4 KFCM

System Information

Prediction Engine

Navigation Data
GPS Almanac

NANU

Terrain Issue