Order 7110.65P, Air Traffic Control, with changes

2/19/047110.65PSection 2. Visual Signals3−2−1. LIGHT SIGNALSUse ATC light signals from TBL 3−2−1 to controlaircraft and the movement of vehicles, equipment,and personnel on the movement area when radiocommunications cannot be employed.REFERENCE−FAAO 7110.65, Altitude Restricted Low Approach, Para 3−10−10.FAAO 7210.3,, Letters of Agreement, Para 4−3−1.3−2−2. WARNING SIGNALDirect a general warning signal, alternating red andgreen, to aircraft or vehicle operators, as appropriate,when:NOTE−The warning signal is not a prohibitive signal and can befollowed by any other light signal, as circumstancespermit.a. Aircraft are converging and a collision hazardexists.b. Mechanical trouble exists of which the pilotmight not be aware.c. Other hazardous conditions are present whichcall for intensified pilot or operator alertness. Theseconditions may include obstructions, soft field, ice onthe runway, etc.3−2−3. RECEIVER-ONLY ACKNOWLEDGMENTTo obtain acknowledgment from an aircraft equippedwith receiver only, request the aircraft to do thefollowing:a. Fixed-wing aircraft:1. Between sunrise and sunset:(a) Move ailerons or rudders while on theground.(b) Rock wings while in flight.2. Between sunset and sunrise: Flash navigationor landing lights.b. Helicopters:1. Between sunrise and sunset:(a) While hovering, either turn the helicoptertoward the controlling facility and flash the landinglight or rock the tip path plane.(b) While in flight, either flash the landinglight or rock the tip path plane.2. Between sunset and sunrise: Flash landinglight or search light.TBL 3−2−1ATC Light SignalsMeaningColor and type of signal Aircraft on the ground Aircraft in flightMovement of vehicles,equipment and personnelSteady green Cleared for takeoff Cleared to land Cleared to cross; proceed; goFlashing green Cleared to taxi Return for landing (to be followed Not applicableby steady green at the proper time)Steady red Stop Give way to other aircraft and Stopcontinue circlingFlashing redTaxi clear of landing area orrunway in useAirport unsafe− Do not land Clear the taxiway/runwayFlashing whiteAlternating red and greenReturn to starting point onairportGeneral Warning Signal−Exercise Extreme CautionNot applicableGeneral Warning Signal− ExerciseExtreme CautionReturn to starting point onairportGeneral Warning Signal−Exercise Extreme CautionVisual Signals3−2−1