Airport signs are critical to ensure the safe and efficient operation of airports worldwide. AC 150/5340-18, Standards for Airport Sign Systems is an advisory circular issued by the Federal Aviation Administration (FAA) that outlines the requirements for airport sign systems. The six types of signs installed on airfields include mandatory instruction signs, location signs, direction signs, destination signs, information signs, and runway distance remaining signs. This article will provide an overview of each type of sign and its purpose.
1. Mandatory Instruction Signs
Mandatory instruction signs are used to indicate areas where aircraft must comply with specific instructions. These signs are usually located on the left-hand side of the taxiway center line marking on the holding side of the runway-holding position marking. They consist of an inscription in white on a red background. Closure will be noted via Notice to Air Missions (NOTAM). LED airfield guidance signs are the latest model manufactured by Vardhman airports and are specifically designed to meet ICAO requirements for mandatory and information airfield guidance signs.
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2. Location Signs
Location signs are placed along the edges of runways and taxiways to help pilots identify their current location. These signs are typically black lettering on a yellow background and contain the name or number of the runway or taxiway.
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3. Direction Signs
Direction signs are used to direct pilots to the correct route when navigating through the airport. These signs are typically green lettering on a white background and may also contain arrows indicating the direction of travel.
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4. Destination Signs
Destination signs are used to inform pilots of their intended destination. These signs are typically white lettering on a blue background and may also contain arrows indicating the direction of travel.
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Airport signs play a crucial role in ensuring the safe and efficient operation of airports worldwide. Knowing the different types of signs, their locations, and what they signify can help pilots navigate the airport safely and efficiently.