Planning190-02207-02 Rev. 1 GPS 175/GNX 375 Pilot’s Guide 4-3Vertical CalculatorWARNINGDO NOT RELY ON VCALC MESSAGES AS THE ONLY MEANS OF EITHERAVOIDING TERRAIN/OBSTACLES OR FOLLOWING ATC GUIDANCE.VCALC PROVIDES ADVISORY INFORMATION ONLY AND MUST BE USEDIN CONCERT WITH ALL OTHER AVAILABLE NAVIGATION DATASOURCES.FEATURE LIMITATIONSThis feature is inhibited when:• Groundspeed is < 35 knots• No active flight plan or direct-to destination is available• One of the following modes is active: SUSP, Vectors-to-Final, OBS• Navigating to a waypoint after the FAF4.1 VCALC PageCreate a 3-D profile to guide you from your present position and altitude to a final(target) altitude at a specified location. Once defined, you may configure messagealerts and additional data on the Map page to stay informed of your progress.Calculate time to TOD and vertical speed required to reach targetaltitude at the specified location.The Vertical Calculator (VCALC) feature is helpfulwhen you want to descend to a certain altitude nearan airport.
