a. Except where a "runway use" program is in effect, use the runway most nearly aligned with the wind when 5 knots or more or the "calm wind" runway when less than 5 knots (set tetrahedrons accordingly) unless use of another runway:
NOTE -
1 - If a pilot prefers to use a runway different from that specified,
he/she is expected to advise ATC.
2 - At airports where a "runway use" program is established, ATC will
assign runways deemed to have the least noise impact. If in the interest
of safety a runway different from that specified is preferred, the pilot
is expected to advise ATC accordingly. ATC will honor such requests and
advise pilots when the requested runway is noise sensitive.
REFERENCE -
FAAO 8400.9, National Safety and Operational Criteria for Runway Use
Programs.
1. Will be operationally advantageous, or
2. Is requested by the pilot.
b. When conducting aircraft operations on other than the advertised
active runway, state the runway in use.
Use STOL runways as follows:
a. A designated STOL runway may be assigned only when requested
by the pilot or as specified in a letter of agreement with an aircraft
operator.
b. Issue the measured STOL runway length if the pilot requests
it.
When authorizing use of runways and a tailwind component exists, always state both wind direction and velocity.
NOTE -
The wind may be described as "calm" when appropriate.
REFERENCE -
FAAO 7110.65, Calm Wind Conditions, paragraph 2-6-5.