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Guide to Understanding Airport Signs

Apr 27, 2025

Essential Guide to Runway Signs

Importance of Understanding Airport Signs

  • Critical for safe piloting.
  • Missing signs at airports can delay traffic or cause dangerous situations.
  • This guide helps in learning what airport signs mean, how to read them, and where to find them.

Types of Airport Signs

There are six main types of airport signs:

  1. Mandatory Instruction Signs
  2. Location Signs
  3. Direction Signs
  4. Destination Signs
  5. Information Signs
  6. Runway Distance Remaining Signs

1. Mandatory Instruction Signs

  • Purpose: Mark critical areas (e.g., runways) where aircraft need clearance to enter.
  • Characteristics:
    • Color: White text on red background.
    • Shape: Rectangular or square.
    • Location: Taxiway and runway intersections, holding positions.
  • Types:
    • Runway Holding Position Signs
    • Runway Approach Area Holding Position Signs
    • ILS Critical Area Holding Position Signs
    • No Entry Signs
  • Visuals:
    • Includes runway designations (e.g., 27, 9, 27L, 27R).

Runway Holding Position Signs

  • Indicate where to stop before entering or crossing a runway.
  • Found at taxiway-runway intersections.
  • Accompanying markings: Two solid, two dashed yellow lines.

Runway Approach Area Holding Position Signs

  • Location: Near approach areas on taxiways.
  • Indicate potential interference areas for landing aircraft.
  • Display: Runway designation with "APCH".

ILS Critical Area Holding Position Sign

  • Denotes ILS critical areas for signal reliability during low visibility.
  • Found near runway thresholds or glide slope transmitters.
  • Display: "ILS", sometimes with runway designation.

No Entry Sign

  • Found at entrances to restricted areas.
  • Ignoring can lead to unsafe situations or penalties.

2. Location Signs

  • Purpose: Help pilots navigate taxiways, ramps, and indicate boundaries.
  • Characteristics:
    • Color: Yellow text on black background.
    • Location: Along taxiways, ramps, aprons.
    • Content: Alphanumeric code indicating taxiway or area.

Types of Location Signs

  • Taxiway Location Signs
  • Runway Location Signs
  • Runway Boundary Signs
  • ILS Critical Area Boundary Signs

3. Direction Signs

  • Purpose: Guide pilots at intersections or junctions.
  • Characteristics:
    • Color: Black text on yellow background.
    • Location: Along taxiways, ramps, aprons.
    • Content: Arrow with alphanumeric code indicating direction.

4. Destination Signs

  • Similar to direction signs but mark the path to specific destinations (e.g., FBO).

5. Information Signs

  • Purpose: Provide important information anywhere at the airport.
  • Characteristics:
    • Yellow background with black text.

6. Runway Distance Remaining Signs

  • Purpose: Inform pilots of the remaining runway for takeoff/landing.
  • Characteristics:
    • Color: White text on black background.
    • Content: Number indicating remaining distance in thousands of feet.
    • Location: Alongside runways at regular intervals.

Conclusion

  • Understanding airport signs is vital for safety and efficiency.
  • Always remain vigilant and use resources such as airport diagrams and ATC instructions.
  • Explore additional resources like the "Essential Guide to Airport Markings" for further knowledge enhancement.

Safe flying!