Garmin G2000 Pilots Guide - Page 466

SYSTEM OVERVIEW FLIGHT INSTRUMENTS EIS & CNS AUDIO PANEL AVOIDANCE MANAGEMENT Automatic Flight Control System Vertical Path VNAV Target Altitude Tracking Active Capture Armed VNV Target Altitude Required Vertical Speed Indication FMS is Selected Navigation Source Terminal Phase of Flight Command Bars Indicate Descent to Maintain Required Vertical Speed Figure 7-12 Vertical Path Tracking Mode Vertical Deviation Indicator If the Altimeter's barometric setting is adjusted while Vertical Path Tracking is active, the flight director increases/decreases the descent rate by up to 500 fpm to re-establish the aircraft on the descent path (without commanding a climb). Adjusting the altimeter barometric setting creates discontinuities in VNAV vertical deviation, moving the descent path. For large adjustments, it may take several minutes for the aircraft to reestablish on the descent path. If the change is made while nearing a waypoint with a VNAV Target Altitude, the aircraft may not re-establish on the descent path in time to meet the vertical constraint. Automatic Reversion to Pitch Hold Mode Several situations can occur while Vertical Path Tracking Mode is active which cause the flight director to revert to Pitch Hold Mode: • Vertical deviation exceeds 200 feet during an overspeed condition. • Vertical deviation experiences a discontinuity that both exceeds 200 feet in magnitude and results in the vertical deviation exceeding 200 feet in magnitude. Such discontinuities are usually caused by flight plan changes that affect the vertical profile. • Vertical deviation becomes invalid (the Vertical Deviation Indicator is removed from the PFD). • A display enters Reversionary Mode (this does not apply to an active vertical direct-to). Unless VNAV is disabled, Vertical Path Tracking Mode and the appropriate altitude capture mode become armed following the reversion to Pitch Hold Mode to allow for possible profile recapture. FLIGHT HAZARD AFCS ADDITIONAL FEATURES APPENDICES INDEX 452 Garmin G2000 Pilot's Guide for the Cessna T240 190-01263-01 Rev. A