THR vs THR REF on a go around (744/8)
When would you want to press TO/GA a second time during a go-around in a 747? The FCOM says that the first press gives you THR and commands the TO/GA thrust limit while the second push gives you THR REF.
"Push (on approach with flaps out of up or glideslope captured) –
• activates A/T in THR mode with GA reference thrust limit displayed • selects TO/GA roll and pitch modes
• second push - activates A/T in THR REF mode
Note: With no A/P or F/D active and TO/GA armed for Go Around, pushing a TO/GA switch displays FD, THR, TO/GA, and TO/GA on both PFDs. Thrust adjusts to provide a 2000 feet per minute climb."
Is it accurate to state that the 2000 fpm note applies only when selecting TO/GA withOUT an A/P or F/D engaged? In the past I may have been under the mistaken impression that even with AP/FD on the autothrottle applied thrust for 2000 fpm climb.