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____ provide the basic means to transition from instrument flight to visual flight for landing. Operational requirements dictate the sophistication and configuration of the approach light system for a particular runway.
Approach Light Systems (ALS)
Define VASI
Visual Approach Slope Indicator
VASI are visible ___ to ___ miles day and up to ___ miles at night.
3-5, 20
PAPI
Precision Approach Path Indicator
What is the range of PAPI day and night?
Up to 5 miles, and up to 20 miles
Runway Edge Lights are classified according to the intensity. They are:
High Intensity Runway Lights (HIRL), Medium Intensity Runway Lights (MIRL), and the Low Intensity Runway Lights (LIRL)
What does REIL stand for?
Runway End Identifier Lights
What are REILS?
The system consists of a pair of synchronized flashing lights located laterally on each side of the runway threshold
What does RCLS stand for?
Runway Centerline Light System
What are RCLS used for?
Runway centerline lights are installed on some precision approach runways to facilitate landing under adverse visibility conditions
Where are they located?
They are located along the runway centerline and are spaced at 50-foot intervals.
What does TDZL stand for?
Touchdown Zone Lights
Who controls the airfield lighting system?
Operation of approach light systems and runway lighting is controlled by the control tower (ATCT).
Airport Beacon
White and Green
Lighted land airport
Airport Beacon
White and Yellow
Lighted Water Airport
Airport Beacon
Green, Yellow, White
Lighted Heliport
Airport Beacon
Dual peaked white flashes between the green flashes
Military Airport
Operation of the airport beacon during the hours of daylight often indicates
The ground visibility is less than 3 miles and/or the ceiling are less than 1,000 feet.
Taxiway Centerline Markings are ____ to ____ inches wide.
6, 12
Permanently closed runways have _____ X’s spaced _____ feet apart down the runway.
Yellow, 1000
Define Runway Distance Remaining Signs
Runway distance remaining signs have a black background with a white numeral inscription and may be installed along one or both side(s) of the runway. The number on the signs indicates the distance (in thousands of feet) of landing runway remaining.