UA.V.B.K8: Airport and seaplane base lighting.

ACS Area V — Operations Task B: Airport Operations References: ACAdvisory CircularCloseFAA guidance that explains acceptable ways to comply with rules or understand FAA procedures. 107-2, 150/5200-32; AIMAeronautical Information ManualCloseFAA operational guidance and glossary material used to understand aviation procedures and terminology.; FAAFederal Aviation AdministrationCloseThe U.S. aviation regulator responsible for Part 107 rules, airspace, and pilot certification processes.-H-8083-25; FAAFederal Aviation AdministrationCloseThe U.S. aviation regulator responsible for Part 107 rules, airspace, and pilot certification processes.-G-8082-22

Key Concepts

Visual identification: airport and seaplane base lighting you must recognize

• Airport rotating beacon. This is a visual NAVAIDNavigational AidCloseGround or satellite-based navigation aid used by pilots for position and routing. operated at many airports to help you locate the field at night or in reduced visibility. At civil airports, the beacon displays alternating white and green flashes. At military airports, the beacon also alternates white and green but is distinguished by dual-peaked (two quick) white flashes between the green flashes. Being able to tell civil from military by the beacon pattern is a common test point and a vital night-identification skill. ^[7]
• Boundary lights. Boundary lights define the perimeter of an airport or landing area. For pilots operating near smaller airfields or special-use facilities, these lights help outline the usable surface when runway edge or waterway lighting may be minimal. For remote pilots visualizing operations from nearby airspace, boundary lights provide a quick sense of where aircraft may taxi or maneuver at night. ^[7]

Seaplane bases: what counts as “airport” lighting and where to find details

• Seaplane bases are airports. By definition, an airport includes any area of land or water used or intended for landing or takeoff of aircraft. This expressly includes special facilities such as seaplane bases and heliports. That means seaplane bases may also employ airport lighting aids (for example, boundary lights or beacons) appropriate to their environment to define a landing area and aid identification. ^[1][7]
• Finding the specifics for a given base. The Chart Supplement U.S. provides the most comprehensive information on a given airport, and it includes seaplane bases that are open to the public. It is organized by region and revised every 56 days, making it the go-to reference for current lighting, services, and operational notes that affect night and low-visibility operations. Aeronautical charts and ATISAutomatic Terminal Information ServiceCloseRecorded airport weather and operational information for pilots. are also listed sources for airport data that help you plan for lighting and nighttime procedures. For the exam, remember the publication cycle and that seaplane bases are included. ^[8]

What you’ll see aircraft do with their lights during operations

• Runway entry and takeoff. When entering the departure runway for takeoff or to “line up and wait,” flight crews should illuminate all aircraft lights except the landing lights to maximize conspicuity to ATCAir Traffic ControlCloseThe system that manages controlled airspace, traffic flow, and aircraft separation services. and inbound traffic. Landing lights should then be turned on when takeoff clearance is received, or when commencing the takeoff roll at an airport without an operating control tower. Expect this brightening just before the roll—an operational cue that an aircraft is about to depart. This is useful for situational awareness when you are operating a small UASSmall Unmanned Aircraft SystemCloseA small drone plus the control and communication links used to operate it. in controlled airspace near an active airport at night. ^[5]

Practical implications for test and real-world operations

• Identify the airport type quickly at night. A simple beacon scan helps you determine whether you are near a civil field (alternating white and green) or a military field (alternating white and green with dual-peaked white). This distinction can shape traffic expectations and communications flow around the field. ^[7]
• Outline of usable areas. Boundary lights define the perimeter of the airport or landing area, which at water facilities can mean the edges of the designated water landing area. This helps you anticipate where crewed aircraft will maneuver at night and select safe UASUnmanned Aircraft SystemCloseAn unmanned aircraft plus its control station, communication links, and supporting components. operating positions that avoid approach/departure paths. ^[7][1]
• Always verify lighting details for a specific location. Because facilities vary—especially at seaplane bases—consult the Chart Supplement U.S. for current lighting availability and remarks, and refresh this knowledge on its 56-day cycle. Use ATISAutomatic Terminal Information ServiceCloseRecorded airport weather and operational information for pilots. when available to capture any operational changes affecting nighttime use. ^[8]