Garmin GNS 530 Pilot's Manual & Reference

Also see for GNS 530: Pilot's manual Instructions Pilot's guide addendum Pilot's guide addendum Quick reference

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Garmin GNS 530 Pilot's Manual & Reference Manual pdf 275 page image

GNS 530(A) Pilot’s Guide and Reference190-00181-00 Rev. HAPPENDIX CMAP DATUMSC-1APPENDIX C: TROUBLESHOOTINGQ & AThis section is designed to answer some of thecommon questions regarding the GNS 530’s capabilitiesand operation. If there is a problem operating the unit,read through this appendix and refer to the referencesection noted. If the answer to a particular question isnot covered here, use the index to find the appropriatesection elsewhere in this manual. If, after reading throughthe appropriate reference section, the answer cannot befound , please see an authorized dealer or contact Garmindirectly at the address or phone numbers listed on pageii. Garmin is dedicated to supporting its products andcustomers.What is RAIM, and how does it affect approachoperations?RAIM is an acronym for Receiver Autonomous IntegrityMonitoring, a GPS receiver function that performs aconsistency check on all tracked satellites. RAIM ensuresthat the available satellite geometry allows the receiverto calculate a position within a specified protection limit(4 nm for oceanic, 2 nm for enroute, 1 nm for terminaland 0.3 nm for non-precision approaches).During oceanic, enroute and terminal phases of flight,RAIM is available nearly 100% of the time. Because ofthe tighter protection limit on approaches, there maybe times when RAIM is not available. The GNS 530automatically monitors RAIM and warns the pilot with analert message (Section 15) when it is not available, andthe INTEG annunciator appears at the bottom left cornerof the screen. If RAIM is not available when crossing theFAF, the pilot must fly the missed approach procedure.The GNS 530’s RAIM prediction function (Section 15)also allows the pilot to see whether RAIM is available for aspecified date and time.NOTE: If RAIM is not predicted to be available forthe final approach course, the approach does notbecome active—as indicated by an ‘Approach isnot active’ message, a ‘RAIM not available fromFAF to MAP’ message and INTEG annunciator.Why aren’t there any approaches available formy flight plan?Approaches are available for the final destinationairport in a flight plan or as a direct-to (keep in mindthat some VOR/VORTAC identifiers are similar to airportidentifiers). If a destination airport does not have aGPS approach, the GNS 530 indicates ‘NONE’ for theavailable procedures—as listed on the Airport ApproachPage (Figure C-1). For more information on selecting anapproach, see Section 6.1.Figure C-1 Airport Approach Page