Originally Posted by
Pilotbrandon7606
Hello all, happy new year.
Question, if you experience windshear on takeoff and do a “windshear toga” escape manoeuvre, will the aircraft still go from SRS to CLB, or will the FACs keep you in SRS?
CLB will engage. The only condition for the SRS not to engage CLB or OPCLB at the ACC ALT is in case of OEI.
In the example you have mentioned you can either pull speed upon CLB engagement or override the FD orders and fly 17.5 watch out for level bust.
Originally Posted by
Pilotbrandon7606
Secondly, if the reactive windshear isn’t active till 1300ft on arrival, but PWS works from 2500-1300
If you experienced actual reactive conditions at 1600ft, would the aircraft just say “windshear ahead”? and then as PF, you have to make the decision as to whether you’re actually in it and therefore do a windshear toga, or go around flaps if you determine that you are not in the shear (based on the conditions listed in FCTM along with some common sense)
Or if >1300 and in actual windshear conditions would it just not give you any warnings?
many thanks
Reactive WS is either detected by the FAC or by pilot observations, ref. FCTM for the conditions in terms of speed variation, v/s, Gs deviation etc..
So you will apply the memory items even in the absence of a reactive trigger if you notice any of the above conditions.
The PWS will give you alerts cautions and warnings. It could be that the PWS does not predict any WS due to lack of Doppler feedback but the reactive system is subsequently triggered due to the aerodynamics effects of varying wing speeds and direction in the absence of any convective weather.