737 Windshear escape maneuver
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737 Windshear escape maneuver
Normal practice is to leave gear down in this maneuver to avoid drag from opening doors during retraction
However the 737 has no main landing gear doors, just the nose gear
So do you retract the gear during this maneuver on this aircraft?
However the 737 has no main landing gear doors, just the nose gear
So do you retract the gear during this maneuver on this aircraft?
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b) help make the aircraft a bit more controllable speed wise with high amounts of positive sheer by making it a bit more draggy.
"No configuration change" including leaving the landing gear down is to KISS for all situations incase of contact with the runway during recovery.
The recovery procedure was developed after the TriStar crash in 1985 at Dallas http://libraryonline.erau.edu/online...s/AAR86-05.pdf
Edit. Thanks ImbracableCrunk (below) - you are correct.
Last edited by Goldenrivett; 12th Aug 2018 at 16:13.
Windshear G/A was designed to give the best chance of avoiding unintended flight into terrain, when appropriate windshear parameters were recognised. Agree with comments about common drill, value of gear in unintended touchdown and possible performance issues.
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Originally Posted by Tangoalpha
yes there may come a day full thrust isn't enough but 99% of the time it will be far more than enough.
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No one is thinking about using anything but TOGA. He just said that it is plenty even with gear drag.
In this case he suspected windshear before the plane annunciated it and had already firewalled the throttles.
So how is he thinking about not using TOGA?
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Wind-shear escape maneuver would be to pitch to best rate of climb airspeed ... period.
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Right. That was kind of my point. If thrust was always enough to outclimb shear as TA claimed, you’d just pitch to best climb and climb out of it. But It isn’t always enough. Windshear can and does exceed an aircraft’s steady climb ability. DAL191 is an example. That’s why we have a procedure in which we exchange airspeed for climb, even past best ROC airspeed if necessary. It’s not sustainable but hopefully it will keep you from hitting the ground long enough to fly out of the shear.
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That’s why we have a procedure in which we exchange airspeed for climb, even past best ROC airspeed if necessary
Boeing B737NG is levers fully forward and auto throttle off.
15 degrees nose up until the PLI becomes the limiting pitch.
Extract all the performance you need to avoid hitting the ground, and don’t stall the airplane. If ya gonna hit the ground, having the gear out is an advantage.
15 degrees nose up until the PLI becomes the limiting pitch.
Extract all the performance you need to avoid hitting the ground, and don’t stall the airplane. If ya gonna hit the ground, having the gear out is an advantage.