Landing Performance
04-13-2016, 07:47 PM
#1
Gets Weekends Off
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Joined APC: Nov 2006
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Landing Performance
If you are landing on this runway:
Runway 10/28
Standing water should always be used during active rain, even if the runway is grooved and even if the rain is light.
Runway 10/28
Dimensions: 7500 x 150 ft. / 2286 x 46 m
Surface: concrete/grooved, in excellent condition
With this weather:Surface: concrete/grooved, in excellent condition
140253Z 07004KT 3SM RA BR SCT025 BKN032 OVC070 16/15 A3013 RMK AO2 SLP198 P0003 60003 T01610150 51010
Which landing performance data do you use? - Dry
- Wet
- Standing Water
Standing water should always be used during active rain, even if the runway is grooved and even if the rain is light.
04-13-2016, 10:17 PM
#4
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From AC 00-45:
3.1.3.8.1 Intensity Qualifier
The intensity qualifiers are light, moderate, and heavy. They are coded with precipitation types except ice crystals (IC) and hail (GR or GS) including those associated with a thunderstorm (TS)and those of a showery nature (SH). Tornadoes and waterspouts are coded as heavy (+FC). No intensity is ascribed to the obscurations of blowing dust (BLDU), blowing sand (BLSA), and blowing snow (BLSN). Only moderate or heavy intensity is ascribed to sandstorm (SS) and duststorm (DS). When more than one form of precipitation is occurring at a time or precipitation is occurring with an obscuration, the reported intensities are not cumulative. The reported intensity will not be greater than the intensity for each form of precipitation.
3.1.3.8.4 Precipitation
Precipitation is any of the forms of water particles, whether liquid or solid, that falls from the atmosphere and reaches the ground. The precipitation types are: drizzle (DZ), rain (RA), snow (SN), snow grains (SG), ice crystals (IC), ice pellets (IP), hail (GR), small hail and/or snow pellets (GS), and unknown precipitation (UP). UP is reported if an automated station detects the occurrence of precipitation but the precipitation sensor cannot recognize the type. Up to three types of precipitation may be coded in a single present weather group. They are coded in order of decreasing dominance based on intensity
The intensity qualifiers are light, moderate, and heavy. They are coded with precipitation types except ice crystals (IC) and hail (GR or GS) including those associated with a thunderstorm (TS)and those of a showery nature (SH). Tornadoes and waterspouts are coded as heavy (+FC). No intensity is ascribed to the obscurations of blowing dust (BLDU), blowing sand (BLSA), and blowing snow (BLSN). Only moderate or heavy intensity is ascribed to sandstorm (SS) and duststorm (DS). When more than one form of precipitation is occurring at a time or precipitation is occurring with an obscuration, the reported intensities are not cumulative. The reported intensity will not be greater than the intensity for each form of precipitation.
3.1.3.8.4 Precipitation
Precipitation is any of the forms of water particles, whether liquid or solid, that falls from the atmosphere and reaches the ground. The precipitation types are: drizzle (DZ), rain (RA), snow (SN), snow grains (SG), ice crystals (IC), ice pellets (IP), hail (GR), small hail and/or snow pellets (GS), and unknown precipitation (UP). UP is reported if an automated station detects the occurrence of precipitation but the precipitation sensor cannot recognize the type. Up to three types of precipitation may be coded in a single present weather group. They are coded in order of decreasing dominance based on intensity
04-14-2016, 11:08 AM
#5
whatever
Joined APC: Sep 2015
Posts: 421
JAA says that a runway is considered wet “when the runway surface is covered with water, or equivalent, less than specified [for a contaminated runway] or when there is sufficient moisture on the runway surface to cause it to appear reflective, but without significant areas of standing water.”
Would have to see the runway.
With it being grooved it may not be reflective so that would allow you to use "DRY". But to be safe you could choose wet numbers as a fudge factor.
The European Joint Aviation Authorities (JAA)2 defines dry runway as “one which is neither wet nor contaminated, and includes those paved runways which have been specially prepared with grooves or porous pavement and maintained to retain ‘effectively dry’ braking action even when moisture is present.”
Would have to see the runway.
With it being grooved it may not be reflective so that would allow you to use "DRY". But to be safe you could choose wet numbers as a fudge factor.
The European Joint Aviation Authorities (JAA)2 defines dry runway as “one which is neither wet nor contaminated, and includes those paved runways which have been specially prepared with grooves or porous pavement and maintained to retain ‘effectively dry’ braking action even when moisture is present.”
04-14-2016, 06:39 PM
#8
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Apparently this depends on the manufacturer, but the standing water numbers should be used in most cases. Embraer is telling me that wet numbers can never be used during active rain unless it is a grooved runway and it is light rain or mist. Standing water is 3 mm of water on 25% or more of the runway. Three mm is less than 1/8 of an inch. Most runways can't shed the water fast enough, even if they are grooved, during active rain.
http://www.faa.gov/other_visit/aviat.../SAFO15009.pdf
It really sucks for us Phenom drivers. The landing distance for standing water shoots up to 5,200 feet. You can't make the 60% rule with that at most airports.
http://www.faa.gov/other_visit/aviat.../SAFO15009.pdf
It really sucks for us Phenom drivers. The landing distance for standing water shoots up to 5,200 feet. You can't make the 60% rule with that at most airports.
04-14-2016, 07:44 PM
#9
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Joined APC: Jan 2006
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Depends on the airplane, some can use dry numbers for a wet grooved runway.
Worst case, use the numbers you need and if the runway is visibly wet or worse when you see it, go missed. The tower could probably answer the question too.
Worst case, use the numbers you need and if the runway is visibly wet or worse when you see it, go missed. The tower could probably answer the question too.
04-15-2016, 07:10 AM
#10
Gets Weekends Off
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Posts: 136
Originally Posted by rickair7777
Depends on the airplane, some can use dry numbers for a wet grooved runway.
Worst case, use the numbers you need and if the runway is visibly wet or worse when you see it, go missed. The tower could probably answer the question too.
Worst case, use the numbers you need and if the runway is visibly wet or worse when you see it, go missed. The tower could probably answer the question too.
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