advisories. They also use the reports for pilot weather briefings. Traffic information or advisories must
be issued to the pilot in a manner that will assist pilots in avoiding other traffic and hazards to flight.
SELECT THE PROPER RUNWAY
Except where a runway-use program is in affect, select the runway most nearly aligned with the
wind when the wind velocity is 5 knots or more. (The purpose of a runway-use program is usually to
reduce the impact of aircraft noise.) If pilots prefer to use a runway different from that specified, they
are expected to advise air traffic control (ATC) personnel.
USE THE CALM WIND RUNWAY
Use the calm wind runway when the wind velocity is less than 5 knots. (Wind tetrahedrons
should be set accordingly.) Wind may be expressed as calm when the velocity is less than 3 knots.
AFFORD OPERATIONAL ADVANTAGE
If possible and wind conditions permit, use the runway that affords an operational advantage to
the aircraft concerned. An example would be allowing an aircraft to leave in the opposite direction
when possible instead of requiring it to taxi the full length of the runway to take off on the calm wind
runway. This would certainly be operationally helpful to the aviator.
HONOR PILOT REQUESTS
Sometimes safety may prohibit a pilot's using the assigned runway or, as discussed in paragraph
3, the pilot may gain an operational advantage by using a runway other than the assigned runway. ATC
personnel will honor such requests and advise the pilot when the requested runway is noise-sensitive.
NOTE: When conducting aircraft operations on other than the active runway, controllers shall state
the runway in use.
ASSIGN SHORT TAKEOFF AND LANDING (STOL) RUNWAYS
Use STOL runways. Assign an STOL runway only when requested by the pilot or as specified
in a letter of agreement with the aircraft operator. Issue the measured runway length if the pilot requests