Garmin G2000 Pilots Guide - Page 50

SyStem overview FliGHt inStrumentS eiS aauuDDi&ioocpn&aScnenlS FliGHt manaGement SyStem overview toucHScreen controller Failure If the Touchscreen Controller fails, the MFD continues to display what was shown prior to the failure of the Touchscreen Controller. Most functions normally performed exclusively on the Touchscreen Controller will be unavailable. The PFD Controller is used to control communications and navigation radios, flight planning functions, and procedure selection and activation on the PFD. Refer to the Audio and CNS and Flight Management sections for information on using the PFD controller to perform these functions. aHrS operation note: Refer to Appendix A for specific AHRS alert information. note: Aggressive maneuvering while AHRS is not operating normally may degrade AHRS accuracy. In addition to using internal sensors, the GRS 77 AHRS uses GPS information, magnetic field data and air data to assist in attitude/heading calculations. In normal mode, the AHRS relies upon GPS and magnetic field measurements. If either of these external measurements is unavailable or invalid, the AHRS uses air data information for attitude determination. Four AHRS modes of operation are available (see Figure 1-28) and depend upon the combination of available sensor inputs. Loss of air data, GPS, or magnetometer sensor inputs is communicated to the pilot by system message alerts. GPS Data Available and Reliable? Y N E O S Mag Data Available and Reliable? Y N E O S Air Data Available and Reliable? Y N E O S Mag Data AND Air Data Available and Reliable? Y N E O S AHRS Normal Mode AHRS no-Mag Mode AHRS no-Mag/ no-Air Mode AHRS no-GPS Mode AHRS coast-on-gyros until invalid Heading Invalid Heading Invalid Figure 1-28 AHRS Operation Attitude/Heading Invalid HaZarD avoiDance aFcS aDDitional FeatureS appenDiceS inDeX 36 Garmin G2000 Pilot's Guide for the Cessna T240 190-01263-01 Rev. A