Windshear
: Windshear is a change of wind speed and/or direction over a short distance : along the flight path. Indications of windshear are listed in the
: Non-Normal Maneuvers section.
: If windshear conditions are suspected prior to takeoff:
Consider delaying Takeoff until windshear conditions no longer exist.
Use the maximum rated takeoff thrust available.
Use Flap 20 for takeoff unless limited by obstacle clearance and/or
climb gradient. Flap 15 may be used as a precautionary setting and will provide nearly equivalent performance to Flaps 20.
Use the longest suitable runway that is clear of the likely windshear.
Use the flight directors for initial climb, and for landing, use Flap 25/30.