startup EGT, wshr g/a & window ovht queries
1) Have heard and curious...if you delay opening the engine start levers (Boeing) until after the recommended 25% (say, to 30%) you can make the peak EGT on startup lower and ease engine life. Why is this?
2) Wshr go-around. Hitting toga once gives toga thrust with the appropriate de-rate as calculated by the EECs, but a second push will give you full toga - you can then disconnect and firewall as required. Is this right?
3) Window ovht u/s - QRH says limit speed to 250 blw FL100. Why does this only apply below? Something to do with a warmer temperature?
The books not very helpful on these three at all...