Showing posts with label Cross Wind Takeoffs. Show all posts
Showing posts with label Cross Wind Takeoffs. Show all posts

Friday, November 05, 2004

Cross Wind Landings

There are many complex manoeuvres in flying - crosswind landings is one of them. Shifts in wind will challenge your ability to bring the plane to a smooth and centered touch down, something that is a matter of safety.

- Remember the cross wind limitation of the aircraft 1/4th of plane stall speed (13 KIAS for a Cessna 152 which has a stall speed of 52 KIAS)
- Remember rules of thumb for how much cross-wind to expect:
20 degrees off the runway – 25%
40 degrees off the runway – 50%
60 degrees off the runway – 75%
90 degrees off the runway – 100%
i.e. if it is 250/20 off runway 27, the wind is 20 degrees to the left of the runway, so the cross wind is 5 KTS.
- If the winds are gusting, approach at an increased speed of ½ the gust factor. i.e. if it is 20 gusting 30, and you would normally approach at 65 KTS, you would approach at 70 KTS (i.e. 30-20 / 2 + 65 KTS)

- Landing with flaps is more prone to being affected due to x-wind
- Crab into wind while approaching runway (the wing that is in the path of wind should be dropped slightly so that it doesn't behave as a sail)
- Correct longitudinal alignment with runway using rudder
- Crosswind correction should be done only when close to runway
- Do whatever it takes to align runway using rudder (floor rudder if required) and aileron
- Always maintain landing speed: 65 KIAS (flap), 70 KIAS (flapless)
- The wheel that is in the path of the wind should touch the runway first
- GO AROUND if REQUIRED