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Pin Head
2nd Aug 2022, 07:07
Hi

Missed Approach Altitude is 2200ft. Your still in wind shear at Alt Acquire and you cant get further climb from ATC.

Have you just broken the procedure by;
1) Not climbing with TOGA guidance or 15degrees
2) Reducing the thrust from max to avoid exceeding Vfe and Vne

Thoughts?
Did Boeing consider this or are there no Missed Approach Altitudes below 2300ft in the world?

Thanks
Pin

FlyingStone
2nd Aug 2022, 09:33
If I'm in a windshear situation, the last thing I'm worried about is ATC clearance.

Maintain present attitude, wind up the MCP altitude, press TOGA again, which will reset FD windshear guidance. Once out of the shear, reset MCP to missed approach altitude, and inform ATC.

rudestuff
2nd Aug 2022, 12:20
If you've climbed to and are holding level flight do you really have a problem?

fdr
2nd Aug 2022, 13:24
If you've climbed to and are holding level flight do you really have a problem?

Maybe not, but the F factor for reactive shear alerts should then be silent... otherwise it is a warning. For predictive doppler derived warnings, the warning is advising of an impending degradation to your energy state. You are permitted to respond to a warning, and there is no requirement to ignore it as it is considered invalid or too high to constitute a risk. What other warnings to we otherwise disregard? It happens frequently, and through grace, often the warnings are indeed false, and then sometimes they are real yet ignored. once gave a QRH to the management pilots as they had started second guessing the NNCLs, the new checklist had the front and back cover and "intentionally blank" in the inside of both. Finally, one crew got pushed into ignoring an NNCL following a warning, and the operator was threatened with being banned from an important piece of real estate, so stopped interfering with the crew's training, at least for a while.

rudestuff
3rd Aug 2022, 14:57
Congratulations, you made it to the missed approach altitude! That means you had excess power to outclimb the wind shear - so clean up, speed up and give yourself more energy. Why make it harder than it needs to be?