Chap 2 Navigation - Runways · 2400’/3000’ before runway – 5 lights – 100 ft apart –...
Transcript of Chap 2 Navigation - Runways · 2400’/3000’ before runway – 5 lights – 100 ft apart –...
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Navigation - RunwaysChap 2, Nolan
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Topics
• Runway Markings• Taxiway Markings• Runway Lighting• Approach Lighting
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Runways
• Runways numbered to correspond to magnetic bearing– Runway 27 has magnetic bearing 270
degrees• Active Runway selected for headwind
greater than 5 knots– When no wind use runway closest to terminal
(to minimize fuel burn in taxi)
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Runway Configurations
• Single runway– Aligned with most common wind direction
• Parallel runways– Increase throughput
• Intersecting Runways– Typically right angles– Aligned with most common wind directions
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Runway Terminology• Runway Designator –
magnetic bearing rounded• Threshold – beginning of
runway for landing• Displaced Threshold –
threshold not at beginning of paved area– Paved area behind threshold
is used for taxi’ing for takeoff, landing rollout (not for touchdown)
• Stopway areas – surface beyond of runway that is paved but unusable
23L
Landing portion of runway
Displaced Threshold
Non - Landing portion of runway
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Runway Markings – Non-precision Runway
• Center-line marking• Runway Designation• Fixed Distance
Marking– Runways 4000’ or
longer• Holding Position
Marking– Taxiway intersections– Runway intersections
26L
500’ 500’
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Runway Markings - Precision• Center-line• Runway designator• Threshold Marker• Fixed distance marker
– 1000’• Touchdown Zone Marker
– 500’• Side Stripes• Holding position
– Taxiway intersections– Runway intersections– ILS critical areas
26L
500’ 500’
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Taxiway Markings• Center-line
– Continuous yellow line• Edge
– Two continuous parallel lines
– Separated by 6”• Hold Line
– Two continuous lines AND Two dashed lines
– Perpendicular to center-line– Sign
• White numbers on a red background
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Runway Markings
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Uncontrolled Airports• 12,000 (95%) out of 12,500 airports in U.S.
– No Tower– Available for unrestricted public use– Two types
• Multicom– No air-ground communication– Communication is strictly air-to-air using CTAF (Common
Traffic Advisory Frequency = 122.9– Keep other traffic informed of your intentions
• Unicom– Non-government (Fixed Base Operator) mans radio– Unicom frequency – 122.8– Get wind direction, velocity, altimeter setting, reported traffic,
active runway
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Controlled Airport
• Airport has a control tower• Radio contact must be established with
the Tower before operating at the airport
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Runway & Approach Lighting• Runway Lighting
– Runway Edge Lights– Runway Threshold Lights– Embedded-in-Runway Lighting
• Touchdown Zone Lighting• Runway Centerline Lights• Taxiway Turnoff Lights
• Approach Lighting Systems– Instrument Approaches
• ALSF-1• ALSF-2• Runway Alignment Indicator Lights (RAILs)• Simplified Short Approach Lighting System (SSALS)• Simplified Short Approach Lighting System with RAIL (SSALR)• Medium Intensity Approach Lighting System with RAIL (MALSR)
– Visual Approaches• Runway End Identifiers (REILS)• Omnidirectional Approach Lighting System (ODALS)• Visual Approach Slope Indicator• Precision Approach Path Indicator
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Runway Lights
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Runway Edge Lights• Runway edge lights
– Located on either side of the runway to outline edges of the runway
– Spaced 200ft apart– Elevated on short poles above grass, snow– Color - White
• Covered with Fresnel Lens– Focus light on horizontal plane above the runway surface
– Color – Half white/Half Amber• Runways used for instrument approaches• Last 2000 ft• Appear amber to landing aircraft to notify end of runway
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Runway Edge Lights
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Runway Threshold Lights
• Located at End of runway• Red and Green split lenses• Pilot approaching runway
– Threshold lights on the landing end of runway appear green
– Threshold lights on the departure end of the runway appear red
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Embedded-in-Runway Lighting
• Touchdown Zone Lighting– Provide additional visual cues to pilot during landing
• Runway Center-line Lighting– Provide additional visual cues to pilot to steer down
runway• Taxiway Turnoff Lights
– Aid pilots in turning off runways• Taxiway Edge Lighting
– Aid pilots in steering on taxiways
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Touchdown Zone Lighting
• Runway edge lighting does not work well in low visibility conditions
• Not sufficient visual cues in last phase of landing• Lights too far apart
• Embedded in runway• Sets of 3• Both sides of runway center-line
• Extend from Landing Threshold to 3000’ feet down the runway
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Runway Center-line Lighting
• Provide visual cues for pilot to steer down runway
• Placed at 75ft intervals down center-line• Colors
– White – first part of runway– Alternate Red/White – 3000’ to 1000’ to end
of runway– Red – 1000’ to end of runway
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Taxiway Turnoff Lights
• Maximizing runway utilization requires pilots to get aircraft off runway as fast as possible
• Delineate path pilot should use to exist runway
• 50 ft intervals• From runway center-line to intersecting
taxiway• Color - gree
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Taxiway Edge Lighting
• Identify sides of taxi-ways• Color - blue
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Approach Lighting Systems• Instrument approaches
– Transition from Instruments to Visual• Pilots must:
– Locate runway– Line aircraft to runway center-line– Coordinate aircraft descent-rateNote: 2000’ at 200 knots = 20 seconds
– Approach Lighting Systems• ALSF-1• ALSF-2• Runway Alignment Indicator Lights (RAILs)• Simplified Short Approach Lighting System (SSALS)• Simplified Short Approach Lighting System with RAIL (SSALR)• Medium Intensity Approach Lighting System with RAIL (MALSR)
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Approach Light System
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Sequenced Flashing Lights (ALSF-1)
• ILS – Category 1– Series of High-intensity lights– From Runway Threshold to
2400’/3000’ before runway– 5 lights– 100 ft apart– Lights more than 1000’ from
runway additional flashing light• Appear to pilot to be moving
to runway (“rabbit”– Triple set of lights at 1000’
from runway– Runway threshold
• Series of four red light bars• Line of green threshold lights
Red
Green
White
White-flashing
Runway
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ALSF-2• ILS Cat II and III
– Pilot has less than 20 secs to get bearing
• ALSF-1 + additional lights– White light bars 500’
from runway– Red light bars on both
sides of center-line during last 1000’ to runway
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Approach Light Bar
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Others• Runway Alignment Indicator Lights (RAILs)
– Sequenced flashing lights only– 200 ft apart (not 100ft)
• Simplified Short Approach Lighting System (SSALS)– ALSF-1
• 200 ft apart (not 100 ft)• 1200’ (not 2400’/3000’)
• Simplified Short Approach Lighting System with RAIL (SSALR)– SSALS with RAIL
• Medium Intensity Approach Lighting System with RAIL (MALSR)– 2400’ from runway– 200 ft apart (not 100 ft)
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SSALS
• Simplified Short Approach Lighting System (SSALS)– ALSF-1
• 200 ft apart (not 100 ft)• 1200’ (not 2400’/3000’)
White
Runway
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SSALR
• Simplified Short Approach Lighting System with RAIL (SSALR)– SSALS with RAIL– ALSF-1
• 200 ft apart (not 100 ft)• 1200’ (not 2400’/3000’)• RAIL 2400’/3000’
Green
White
Runway
White-flashing
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MALSR
• Medium Intensity Approach Lighting System with RAIL (MALSR)– RAIL 2400’ from
runway– Light bars 200 ft apart
(not 100 ft)– Light bars from 1400’
from runway
Green
White
Runway
White-flashing
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Approach Lighting System
• Visual Approaches• Runway End Identifiers (REILS)• Omnidirectional Approach Lighting System
(ODALS)• Visual Approach Slope Indicator• Precision Approach Path Indicator
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Runway End Identifiers (REILS)• Provide pilots with
indication of end of runways
• Located at either end of runway (approach and takeoff)
• Synchronized to flash 2/sec
• Runway End Identifiers (REILS)
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Omnidirectional Approach Lighting System (ODALS)
• Identifies flight path to be used by pilot for a runway
• Flash in sequence• Approach to runway (or further out)
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Visual Approach Slope Indicator (VASI)
• Vertical guidance to approach flight path (3°)
• Visible upto 2 miles from runway• Installed on side of runway
– At threshold, +700, +1200• Narrow beam of light
– Above glidepath – WHITE– Below glidepath - RED
• Installed on runways without ILS
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Visual Approach Slope Indicator (VASI)
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Precision Approach Path Indicator (PAPI)
• Single row of lights• Each light in row emits white and red beam at progressively higher angle• Operation
– Above glide path – 4 white– As descend see red light from light closest to runway– On glidepath 2 red/2white– Below glidepath – 4 red
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Homework
• Draw concept maps for:• Runway/Taxiway Markings• Runway/Approach Lighting
• Prepare for in-class quiz