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.