Its Boeings non normal manoeuvre philosophy: all in or all out
Tcas all out
Gpws all out
Windshear auto: all in
Windshear manual: all out after toga so f/d guidance
To/ga in Windshear on an auto manoeuvre will give you full rated thrust if it's required to get to 2000fpm. The system copes admirably and flies the stick shake better than I could.
However there are 2 notes in the QRH:
1. maximum thrust can be obtained by firewalling the thrust levers if it's required. It's part of the p2's actions when terrain contact is imminent.
2. Severe Windshear might be too much for the afds to handle so be prepared to disconnect
Last edited by Shaka Zulu; 30th Apr 2012 at 11:51.