Show AID TO CORRECT LANDING two approach angle indicators like this one will be used in the all weather approach light system to train pilots in correct landing procedures the pilot in the middle plane piano is coming in at correct rate ot of descent and would see a green light the light would appear as red to the lower plane which Is too low installed near the head of the runway approach angle indicators will be used only in relatively clear weather they are expected to accustom pilots to correct landings and help make foggy weather operations routine this device will eliminate many of the landing accidents that have occurred during the past few ew years the army and navy have approved of the indicator |