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#21
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Runway ID
Yes, renumbered runway ten (roman numerals)
"Matt Barrow" wrote in message ... "BTIZ" wrote in message news:PBg4f.10452$MN6.7877@fed1read04... I always love it when they have to rename/repaint the runway because the magnetic heading for the runway changed.. and to the non-informed... no.. the earth did not move to change the runway.. Only in the case of Mayor Daley. |
#22
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Runway ID
No, Bill has this right. If rounded correctly, 045 becomes 'runway 4' and
055 becomes 'runway 6'. "Morgans" wrote in message ... "Lakeview Bill" wrote No... The magnetic heading of Runway 5 can be any heading between 046 and 054. Actually, it could be 045 to 055. There is a choice of rounding up or down, with a heading ending in "5". -- Jim in NC |
#23
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Runway ID
"Mike W." wrote in message ... No, Bill has this right. If rounded correctly, 045 becomes 'runway 4' and 055 becomes 'runway 6'. So why is it correct to round 045 down to 'runway 4' and 055 up to 'runway 6'? |
#24
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Runway ID
"Mike W." wrote No, Bill has this right. If rounded correctly, 045 becomes 'runway 4' and 055 becomes 'runway 6'. I'm sure I read a reg quoted earlier in this thread, that you got to choose going up or down, when it was --5. Who posted that? -- Jim in NC |
#25
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Runway ID
"Morgans" wrote I'm sure I read a reg quoted earlier in this thread, that you got to choose going up or down, when it was --5. I found it. Quoted in earlier post by Bob Moo ____________________________________ 4-3-6. Use of Runways/Declared Distances a. Runways are identified by numbers which indicate the nearest 10-degree increment of the azimuth of the runway centerline. For example, where the magnetic azimuth is 183 degrees, the runway designation would be 18; for a magnetic azimuth of 87 degrees, the runway designation would be 9. For a magnetic azimuth ending in the number 5, such as 185, the runway designation could be either 18 or 19. Wind direction issued by the tower is also magnetic and wind velocity is in knots. ____________________________________ So if this was a valid quote that Bob pulled up, it would seem to put *that* to rest. As far as the zero in the runway, I know it is not "correct" in the US, but I think it is a shame that we do not follow more of the IACO conventions. Just my opinion, of course. -- Jim in NC |
#26
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Runway ID
True or false: An airplane can be a Piper or a Cessna.
While it is also true that an airplane could also be a Mooney or a Beechcraft or any of the thousands of other builders that have come and gone, the statement: "An airplane can be a Piper or a Cessna", is quite true, although quite possibly less than necessarily inclusive. Hence my choice of the absolutely true statement: "The magnetic heading of Runway 5 can be any heading between 046 and 054." I recognize that Runway 5 MIGHT also have a magnetic heading of 045 or 055. But if it has a heading between 046 and 054, it WILL ABSOLUTELY be Runway 5. My choice to use "between 046 and 054" instead of including 045 or 055 was in the, obviously vain, hope that we could avoid the endless argument over minutiae that all too often clogs this group... "Mike W." wrote in message ... No, Bill has this right. If rounded correctly, 045 becomes 'runway 4' and 055 becomes 'runway 6'. "Morgans" wrote in message ... "Lakeview Bill" wrote No... The magnetic heading of Runway 5 can be any heading between 046 and 054. Actually, it could be 045 to 055. There is a choice of rounding up or down, with a heading ending in "5". -- Jim in NC |
#27
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Runway ID
"Lakeview Bill" wrote in message . .. "The magnetic heading of Runway 5 can be any heading between 046 and 054." I recognize that Runway 5 MIGHT also have a magnetic heading of 045 or 055. But if it has a heading between 046 and 054, it WILL ABSOLUTELY be Runway 5. KMKE had a runway some years ago with a magnetic azimuth of 053. It was designated Runway 7L. |
#28
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Runway ID
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#29
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Runway ID
Steven P. McNicoll wrote:
"Lakeview Bill" wrote in message . .. "The magnetic heading of Runway 5 can be any heading between 046 and 054." I recognize that Runway 5 MIGHT also have a magnetic heading of 045 or 055. But if it has a heading between 046 and 054, it WILL ABSOLUTELY be Runway 5. KMKE had a runway some years ago with a magnetic azimuth of 053. It was designated Runway 7L. SJC's runway 29 is 303.3 degrees. Hilton |
#30
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Runway ID
"Morgans" wrote in message ... I found it. Quoted in earlier post by Bob Moo ____________________________________ 4-3-6. Use of Runways/Declared Distances a. Runways are identified by numbers which indicate the nearest 10-degree increment of the azimuth of the runway centerline. For example, where the magnetic azimuth is 183 degrees, the runway designation would be 18; for a magnetic azimuth of 87 degrees, the runway designation would be 9. For a magnetic azimuth ending in the number 5, such as 185, the runway designation could be either 18 or 19. Wind direction issued by the tower is also magnetic and wind velocity is in knots. ____________________________________ So if this was a valid quote that Bob pulled up, it would seem to put *that* to rest. As far as the zero in the runway, I know it is not "correct" in the US, but I think it is a shame that we do not follow more of the IACO conventions. Just my opinion, of course. Advisory Circular 150/5340-1J STANDARDS FOR AIRPORT MARKINGS MARKINGS FOR PAVED RUNWAYS AND TAXIWAYS. Section 2. Runway Markings. 7. RUNWAY DESIGNATION MARKING. a. Purpose. A runway designation marking identifies a runway by its magnetic azimuth. b. Location. Runway designation markings, as shown in Figures 1 and 2, are located on each end of a runway. c. Color. Runway designation markings are white. It is particularly helpful to pilots if these markings are outlined in black on light colored pavements (see paragraph 4(a)(1)). d. Characteristics. A runway designation marking consists of a number and, on parallel runways, is supplemented with a letter. A single-digit runway designation number is not preceded by a zero. On a single runway, dual parallel runways and triple parallel runways, the designation number is the whole number nearest one-tenth of the magnetic azimuth when viewed from the direction of approach. For example, where the magnetic azimuth is 183 degrees, the runway designation marking would be 18; and for a magnetic azimuth of 87 degrees, the runway designation marking would be 9. For a magnetic azimuth ending in the number "5," such as 185 degrees, the runway designation marking can be either 18 or 19. On four or more parallel runways, one set of adjacent runways is numbered to the nearest one-tenth of the magnetic azimuth and the other set of adjacent runways is numbered to the next nearest one-tenth of the magnetic azimuth. (1) Parallel Runways. In the case of parallel runways, each runway designation number is supplemented by a letter, in the order shown from left to right when viewed from the direction of approach, as shown in the following examples: (i) For two parallel runways having a magnetic azimuth of 182 degrees, the runways would be designated "18L," "18R." (ii) For three parallel runways having a magnetic azimuth of 87 degrees, the runways would be designated "9L," "9C," "9R." (iii) For four parallel runways having a magnetic azimuth of 324 degrees, the runways would be designated "32L," "32R," "33L," "33R." (iv) For five parallel runways having a magnetic azimuth of 138 degrees, the runways would be designated "13L," "13R," "14L," "14C," "14R." (v) For six parallel runways having a magnetic azimuth of 83 degrees, the runways would be designated "8L," "8C," "8R," "9L," "9C," "9R." (vi) For seven parallel runways having a magnetic azimuth of 85 degrees, the runways would be designated "8L," "8C," "8R," "9L," "9C," "9R," "10." (2) There are some cases where parallel runway designation may not be appropriate because of possible pilot confusion with the runway surface or the distance between landing thresholds. For example a turf runway or a visual runway, which is parallel to a higher precedence runway and has a distance between the landing thresholds may have a different runway designation, especially if the paved runway has a paved parallel taxiway. Another example where a parallel runway designation may not be appropriate is a situation where the parallel runways are separated by a large distance with a terminal between them. (3) The size and spacing of the numbers and letters are reduced only when necessary due to space limitations on narrow runways, and should be no closer than 2 feet from the runway edge or side strips if present. The numbers and letters are in the form and proportion shown in Figure 4. |
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