FAA L-858

The FAA outlines 6 types of signs in 5 sizes, 5 styles and 2 classes of FAA L-858 airport guidance signs (runway signs and taxiway signs).

L-858Y – Direction, Destination and Boundary Signs

• Black legend on a yellow background
• Size 1, 2 or 3

L-858R – Mandatory Instruction Signs

• 3/4-inch (19 mm) ± 1/8-inch (3.2 mm) black outline on the outside edge of white legend on a red background. NOTE: The black outline is background and does not add to the spacing to the next character or border. The black outline on the chevron portion of the “M” must be cut off horizontally in line with the adjacent leg of the letter.
• Size 1, 2 or 3

L-858L – Taxiway Location Signs

• Yellow legend and border on a black background. The yellow border is inset from the inner edge of the sign to provide a continuous black margin.
• Size 1, 2 or 3

L-858B – Runway Distance Remaining Signs

• White legend on a black background. NOTE: The L-858B size 4 sign is also a basis for Arresting Gear Markers (AGM) per AC 150/5220-9A, Aircraft Arresting Systems on Civil Airports.
• Size 4 or 5

L-858Ba – Runway Distance Remaining Sign

• A dot matrix sign with white legend on a black background
• Size 4 or 5

L-858C – Taxiway Ending Marker Sign

• Yellow 45-degree diagonal stripes on a black background
• Sizes 1, 2 or 3 with a 48.0 in. (1219 mm) or 72.0 in. (1.8 mm) maximum overall length

L-858H – One-half distance remaining signs

• White legend on a black background. NOTE: L-858H signs must not be used in combination with L-858B signs.
• Size 5 only

Sign Legend Panel Sizes

• Size 1 – 18 in. (457 mm) legend panel with a 12 in. (305 mm) legend
• Size 2 – 24 in. (610 mm) legend panel with a 15 in. (381 mm) legend
• Size 3 – 30 in. (762 mm) legend panel with an 18 in. (457 mm) legend
• Size 4 – 48 in. (1219 mm) legend panel with a 40 in. (1016 mm) legend
• Size 5 – 30 in. (762 mm) legend panel with a 25 in. (635 mm) legend

Sign Styles

• Style 1 – powered from a 120 volt AC power source
• Style 2 – powered from a series lighting circuit of 4.8 to 6.6 A
• Style 3 – powered from a series lighting circuit of 2.8 to 6.6 A or 8.5 to 20 A
• Style 4 – unlighted signs – not applicable to L-858B and L-858Ba
• Style 5 – powered from a series lighting circuit of 5.5 A

Sign Classes

• Class 1 – -4°F (-20°C) to 131°F (55°C) operation environment
• Class 2 – -40°F (-40°C) to 131°F (55°C) operation environment.
• Shipping and storage temperature ranges for Class 1 and 2 signs are from -67°F (-55°C) to 131°F (55°C).