Originally Posted by
felixthecat
After lift off and with speed greater than 80kts pressing TOGA disarms LNAV and VNAV and gets rid of any takeoff or assumed temperature reduction. If auto throttle is in HOLD it will activate in THR REF
I think this is the answer I am looking for. It is on the 747. At 65 knots we do get HOLD but it seems to go back to THR REF at 400 feet.
Therefore, if correct, pressing TOGA will give full rated thrust for the windshear escape maneuver, not derated or assumed temperature thrust. This will be the case whether the autothrottle is in HOLD or THR REF. Meanwhile if you were still on the ground and encounter windshear, pressing the TOGA button a second time does not increase thrust from its derate/ATM setting. Is this all correct.