PowerPoint Presentation

[Audio] This presentation is about Ground Proximity and Warning System in the Airbus A320 GPWS is to warn pilots when flight parameters exceed the safe flight envelope. Its main purpose is to prevent controlled flight into terrain accidents. Warning and alerts are generated as a result of changes in radar altimeter heights of rate of those changes. GPWS control panel in A320 located on the left side of the overhead panel GPWS pushbuttons functions: TERR pushbutton: it inhabits the Terrain Awareness Display and Terrain Clearance Floor modes. It does not affect the basic GPWS modes 1 to 5. System push button: it affects all GPWS basic modes 1 to 5. Amber light comes on if any modes 1 to 5 malfunction Glide slope mode pushbutton: it inhabits Mode 5 which is too far below glideslope Flap mode pushbutton: inhabits mode 4 which is too low flaps Landing flap 3 : to avoid nuisance warning during aircraft landing in flap 3. It will inhabit FLAP configuration 3..

[Audio] GPWS visual warnings are provided on the MISCELLANEOUS panels. From here the maintenance crew can test the system. EGPWS terrain display. A forward-looking capability for terrain, its purpose is to display terrain elevation surrounding the aircraft in color coded to avoid controlled flight into terrain and give enough time to the crew to perform an avoidance maneuver. Terrain information is displayed on ND by selecting either one of the TERR on ND pushbutton switch which are fitted on each side of the main panel..

[Audio] Mode 2 warns the flight crew of excessive closure rates with rapidly rising terrain. It triggers aural and visual alerts, based on the landing gear/ flaps configuration of the aircraft, the radio height, and the RA rate of change. There are two types of Mode 2 alerts; Mode 2A (active during climb, cruise, and initial approach) and Mode 2B (active during approach and 60s after takeoff). Mode 3 warns the crew of inadvertent decants, and loss of altitude after takeoff, or during missed approach If the aircraft descends during the initial takeoff climb or during a go around, the PULL UP light comes on and the aural alerts " DON'T SINK" sounds repeatedly..