Garmin G950 Pilot's Manual

Also see for G950: Installation and maintenance manual Pilot's guide

Contents

Garmin G950 Pilot’s Guide for the Tecnam P2006T 190-01146-00 Rev. A12SYSTEM OVERVIEWSYSTEMOVERVIEWFLIGHTINSTRUMENTSEISAUDIO PANEL& CNSFLIGHTMANAGEMENTHAZARDAVOIDANCEAFCSADDITIONALFEATURESAPPENDICESINDEXAHRS OPERATIONNOTE: Aggressive maneuvering while AHRS is not operating normally may degrade AHRS accuracy.The Attitude and Heading Reference System (AHRS) performs attitude, heading, and vertical accelerationcalculations for the G950 System, utilizing GPS, magnetometer, and air data in addition to information from itsinternal sensors. Attitude and heading information are updated on the PFD while the AHRS receives appropriatecombinations of information from the external sensor inputs.Attitude/Heading InvalidAHRSno-GPSModeAHRS NormalOperationAHRS no-Mag ModeAHRS no-Mag/no-Air ModeHeading InvalidavailableavailableunavailableunavailableavailableunavailableunavailableavailableAir DataMagnetometer Dataunavailableavailable GPS DataMagnetometer DataAir DataFigure 1-12 AHRS OperationLoss of GPS, magnetometer, or air data inputs is communicated to the pilot by message advisory alerts. Anyfailure of the internal AHRS inertial sensors results in loss of attitude and heading information (indicated by red‘X’ flags over the corresponding flight instruments).Two GPS inputs are provided to the AHRS. If GPS information from one of the inputs fails, the AHRS usesthe remaining GPS input and an alert message is issued to inform the pilot. If both GPS inputs fail, the AHRScan continue to provide attitude and heading information to the PFD as long as magnetometer and airspeeddata are available and valid.If the magnetometer input fails, the AHRS continues to output valid attitude information; however, theheading output on the PFD is flagged as invalid with a red ‘X’.Failure of the air data input has no effect on the AHRS output while AHRS is receiving valid GPS information.Invalid/unavailable airspeed data in addition to GPS failure results in loss of all attitude and headinginformation.