Why isn't KTEX's runway designation 10/28 instead of 9/27?












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Why is the marking on the runway written as (9/27) Telluride (KTEX), Colorado, USA. whereas the direction is 284 degrees? Shouldn't it be (10/28) instead?






usa runways airport-markings







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$begingroup$


Why is the marking on the runway written as (9/27) Telluride (KTEX), Colorado, USA. whereas the direction is 284 degrees? Shouldn't it be (10/28) instead?






usa runways airport-markings







share|improve this question









New contributor




Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







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    Welcome to Av.SE!
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    yesterday














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$begingroup$


Why is the marking on the runway written as (9/27) Telluride (KTEX), Colorado, USA. whereas the direction is 284 degrees? Shouldn't it be (10/28) instead?






usa runways airport-markings







share|improve this question









New contributor




Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




Why is the marking on the runway written as (9/27) Telluride (KTEX), Colorado, USA. whereas the direction is 284 degrees? Shouldn't it be (10/28) instead?






usa runways airport-markings




usa runways airport-markings






share|improve this question









New contributor




Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited yesterday









ymb1

68.4k7216363




68.4k7216363






New contributor




Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked yesterday









Ashraf HassanAshraf Hassan

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New contributor




Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Ashraf Hassan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • $begingroup$
    Welcome to Av.SE!
    $endgroup$
    – Ralph J
    yesterday


















  • $begingroup$
    Welcome to Av.SE!
    $endgroup$
    – Ralph J
    yesterday
















$begingroup$
Welcome to Av.SE!
$endgroup$
– Ralph J
yesterday




$begingroup$
Welcome to Av.SE!
$endgroup$
– Ralph J
yesterday










1 Answer
1






active

oldest

votes


















23












$begingroup$

That direction (284) is the true heading, but runways are numbered according to the magnetic heading.




Runways are usually numbered according to their direction, more precisely called runway magnetic bearing or QFU (see Q codes). (How are runways numbered?)




For KTEX:




276 magnetic, 285 true

096 magnetic, 105 true




While 276 should be rounded to runway 28, it could be a recent change that the magnetic heading changed to 276 from say <275. There is a process to go through, so a recent change in magnetic variation does not mean the renumbering will swiftly follow.




Every five years, the FAA reevaluates shifts in the pole—its magnetic variation—and makes changes to runways and flight procedures as needed. (How do airports determine when they should change their runway numbers?)







share|improve this answer











$endgroup$









  • 3




    $begingroup$
    For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
    $endgroup$
    – Michael Seifert
    yesterday






  • 3




    $begingroup$
    Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
    $endgroup$
    – reirab
    21 hours ago










  • $begingroup$
    @reirab I smell collusion.
    $endgroup$
    – hobbs
    17 hours ago










  • $begingroup$
    @hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
    $endgroup$
    – reirab
    16 hours ago













Your Answer





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1 Answer
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oldest

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1 Answer
1






active

oldest

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active

oldest

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active

oldest

votes









23












$begingroup$

That direction (284) is the true heading, but runways are numbered according to the magnetic heading.




Runways are usually numbered according to their direction, more precisely called runway magnetic bearing or QFU (see Q codes). (How are runways numbered?)




For KTEX:




276 magnetic, 285 true

096 magnetic, 105 true




While 276 should be rounded to runway 28, it could be a recent change that the magnetic heading changed to 276 from say <275. There is a process to go through, so a recent change in magnetic variation does not mean the renumbering will swiftly follow.




Every five years, the FAA reevaluates shifts in the pole—its magnetic variation—and makes changes to runways and flight procedures as needed. (How do airports determine when they should change their runway numbers?)







share|improve this answer











$endgroup$









  • 3




    $begingroup$
    For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
    $endgroup$
    – Michael Seifert
    yesterday






  • 3




    $begingroup$
    Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
    $endgroup$
    – reirab
    21 hours ago










  • $begingroup$
    @reirab I smell collusion.
    $endgroup$
    – hobbs
    17 hours ago










  • $begingroup$
    @hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
    $endgroup$
    – reirab
    16 hours ago


















23












$begingroup$

That direction (284) is the true heading, but runways are numbered according to the magnetic heading.




Runways are usually numbered according to their direction, more precisely called runway magnetic bearing or QFU (see Q codes). (How are runways numbered?)




For KTEX:




276 magnetic, 285 true

096 magnetic, 105 true




While 276 should be rounded to runway 28, it could be a recent change that the magnetic heading changed to 276 from say <275. There is a process to go through, so a recent change in magnetic variation does not mean the renumbering will swiftly follow.




Every five years, the FAA reevaluates shifts in the pole—its magnetic variation—and makes changes to runways and flight procedures as needed. (How do airports determine when they should change their runway numbers?)







share|improve this answer











$endgroup$









  • 3




    $begingroup$
    For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
    $endgroup$
    – Michael Seifert
    yesterday






  • 3




    $begingroup$
    Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
    $endgroup$
    – reirab
    21 hours ago










  • $begingroup$
    @reirab I smell collusion.
    $endgroup$
    – hobbs
    17 hours ago










  • $begingroup$
    @hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
    $endgroup$
    – reirab
    16 hours ago
















23












23








23





$begingroup$

That direction (284) is the true heading, but runways are numbered according to the magnetic heading.




Runways are usually numbered according to their direction, more precisely called runway magnetic bearing or QFU (see Q codes). (How are runways numbered?)




For KTEX:




276 magnetic, 285 true

096 magnetic, 105 true




While 276 should be rounded to runway 28, it could be a recent change that the magnetic heading changed to 276 from say <275. There is a process to go through, so a recent change in magnetic variation does not mean the renumbering will swiftly follow.




Every five years, the FAA reevaluates shifts in the pole—its magnetic variation—and makes changes to runways and flight procedures as needed. (How do airports determine when they should change their runway numbers?)







share|improve this answer











$endgroup$



That direction (284) is the true heading, but runways are numbered according to the magnetic heading.




Runways are usually numbered according to their direction, more precisely called runway magnetic bearing or QFU (see Q codes). (How are runways numbered?)




For KTEX:




276 magnetic, 285 true

096 magnetic, 105 true




While 276 should be rounded to runway 28, it could be a recent change that the magnetic heading changed to 276 from say <275. There is a process to go through, so a recent change in magnetic variation does not mean the renumbering will swiftly follow.




Every five years, the FAA reevaluates shifts in the pole—its magnetic variation—and makes changes to runways and flight procedures as needed. (How do airports determine when they should change their runway numbers?)








share|improve this answer














share|improve this answer



share|improve this answer








edited yesterday

























answered yesterday









ymb1ymb1

68.4k7216363




68.4k7216363








  • 3




    $begingroup$
    For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
    $endgroup$
    – Michael Seifert
    yesterday






  • 3




    $begingroup$
    Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
    $endgroup$
    – reirab
    21 hours ago










  • $begingroup$
    @reirab I smell collusion.
    $endgroup$
    – hobbs
    17 hours ago










  • $begingroup$
    @hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
    $endgroup$
    – reirab
    16 hours ago
















  • 3




    $begingroup$
    For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
    $endgroup$
    – Michael Seifert
    yesterday






  • 3




    $begingroup$
    Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
    $endgroup$
    – reirab
    21 hours ago










  • $begingroup$
    @reirab I smell collusion.
    $endgroup$
    – hobbs
    17 hours ago










  • $begingroup$
    @hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
    $endgroup$
    – reirab
    16 hours ago










3




3




$begingroup$
For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
$endgroup$
– Michael Seifert
yesterday




$begingroup$
For the curious, the NOAA has historical magnetic declination data. The map does indeed show that the magnetic declination around Telluride has shifted by about 1° over the past ten years, which lends credence to the idea that the magnetic heading used to be less than 275°.
$endgroup$
– Michael Seifert
yesterday




3




3




$begingroup$
Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
$endgroup$
– reirab
21 hours ago




$begingroup$
Yeah, the magnetic North Pole has actually moved by a surprising large amount over the last few decades. It used to wander around relatively slowly over Northern Canada, but it's been quickly accelerating straight towards Russia over the last few decades. It was over Northern Canada in 1994 and is now almost halfway to Russia.
$endgroup$
– reirab
21 hours ago












$begingroup$
@reirab I smell collusion.
$endgroup$
– hobbs
17 hours ago




$begingroup$
@reirab I smell collusion.
$endgroup$
– hobbs
17 hours ago












$begingroup$
@hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
$endgroup$
– reirab
16 hours ago






$begingroup$
@hobbs Yeah, it started in the Soviet era. Obvious Communist plot to steal the North Pole from NATO countries.
$endgroup$
– reirab
16 hours ago












Ashraf Hassan is a new contributor. Be nice, and check out our Code of Conduct.










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Ashraf Hassan is a new contributor. Be nice, and check out our Code of Conduct.
















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