Airport Operations

signs always have an arrow showing the direction of the taxi route to that destination. [Figure 14-22] When the arrow on the destination sign indicates a turn, the sign is located prior to the intersection. Destinations commonly shown on these types of signs include runways, aprons, terminals, military areas, civil aviation areas, cargo areas, international areas, and fixed-base operators. When the inscription for two or more destinations having a common taxi route are placed on a sign, the destinations are separated by a “dot” (•) and one arrow would be used as shown in Figure 14-22. When the inscription on a sign contains two or more destinations having different taxi routes, each destination is accompanied by an arrow and separated from the other destination(s) on the sign with a vertical black message divider as shown in Figure 14-18. Taxiway Bravo direction sign with a collocated Figure 14-23. The example shown in Figure 14-23 shows Taxiway Delta location sign. When the arrow on the direction two signs. The sign in the foreground explains that Runway sign indicates a turn, the sign is located prior to the intersection. 20 threshold is to the left, and Runways 32, 2, and 14 are to the right. The sign in the background indicates that you are Figure 14-20A and B shows an example of a direction sign at located on Taxiway Bravo and Taxiway November will take a complex taxiway intersection. Figure 14-20A and B shows you to those runways. Taxiway Bravo intersects with Taxiway Sierra at 90°, but at 45° with Taxiway Foxtrot. This type of array can be displayed Holding Position Signs and Markings for an with or without the taxiway location sign, which in this case Instrument Landing System (ILS) Critical Area would be Taxiway Bravo. The instrument landing system (ILS) broadcasts signals to Enhanced Taxiway Centerline Markings arriving instrument aircraft to guide them to the runway. Each of these ILSs have critical areas that must be kept clear of all At most towered airports, the enhanced taxiway centerline obstacles in order to ensure quality of the broadcast signal. At marking is used to warn you of an upcoming runway. It consists many airports, taxiways extend into the ILS critical area. Most of yellow dashed lines on either side of the normal solid taxiway of the time, this is of no concern; however, during times of centerline and the dashes extend up to 150 feet prior to a poor weather, an aircraft on approach may depend on a good runway holding position marking. [Figure 14-21A and B] They signal quality. When necessary, ATC will protect the ILS are used to aid you in maintaining awareness during surface critical area for arrival instrument traffic by instructing taxiing movement to reduce runway incursions. aircraft to “hold short” of Runway (XX) ILS critical area. Destination Signs The ILS critical area hold sign has white characters, outlined Destination signs have black characters on a yellow in black, on a red background and is installed adjacent to the background indicating a destination at the airport. These ILS holding position markings. [Figure 14-24] The holding position markings for the ILS critical area appear on the pavement as a horizontal yellow ladder extending across the width of the taxiway. When instructed to “hold short of Runway (XX) ILS critical area,” you must ensure no portion of the aircraft extends beyond these markings. [Figure 14-25] If ATC does not instruct you to hold at this point, then you may bypass the ILS critical area hold position markings and continue with your taxi. Figure 14-24 shows that the ILS hold sign is located on Taxiway Golf and the ILS ladder hold position marking is adjacent to the hold sign. Figure 14-19. Surface painted taxiway direction signs. 14-12