AOA and Refuel/NWS Indexer Lights

The indexer lights are positioned at the left and right sides of the HUDat the center console. Inside a casing are 3 lights on each side. The left lights (AOA) show the optimal Angle of Attack of the A/C during landing. The indexers at the right side are used during in air refueling. The light in the middle has a double function, showing the status of the NWS (Nose Wheel Steering) when the A/C is on the ground with extended landing gear (is selected with the Missile Step Switch on the. Side Stick Controller).

	The Indexer Lights and his elements
	Pictures from the AOA and Refuel/NWS Indexer Lights

Element	Type	Position	Information
V	Status light (red)	-	On, if AOA is too high (> 15 deg)
O	Status light (green)	-	On, if AOA is ideal (13 deg)
^	Status light (yellow)	-	On, if AOA is too low (< 11 deg)
RDY	Status light (blue)	-	On, if ready and permission to refuel
AR NWS	Status light (green)	-	On, if the refueling boom is connect or at gound, if the NWS is activate
DISC	Status light (yellow)	-	On, if the refueling boom is disconnect

Note:
The showed panel drawing is a drawing with can be downloaded from my page Documents, plans and diagrams from the F-16.



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