I see where you are going with this..:-) Interesting point..
777 FCOM2 (this time on takeoff)...
Second push (go-around active with flaps out of up, LNAV armed, TO/GA roll
and pitch mode) - activates autothrottle in THR REF using GA reference thrust, or
Second push (go-around active with flaps out of up, LNAV active, TO/GA pitch
mode) - activates autothrottle in THR REF using GA reference thrust, roll mode
remains LNAV, or
Second push (go-around active with flaps out of up, HDG SEL or HDG HOLD
active, TO/GA pitch mode) - activates autothrottle in THR REF using GA
reference thrust, selects TO/GA roll and pitch modes.
747 (whole section of FCOM 2 this time)
In flight:
Push (after lift-off with takeoff reference thrust limit displayed) -
• removes takeoff and climb derates and assumed temperature thrust
reduction.
• A/T in HOLD, activates A/T in THR REF mode.
• between 50 feet and 400 feet, selects TO/GA roll mode.
• above 400 feet, selects TO/GA roll and pitch modes.
Push (on approach with flaps out of up or glideslope captured) -
• activates A/T in THR mode with GA reference thrust limit displayed.
Thrust adjusts to provide a 2000 feet per minute climb
• selects TO/GA roll and pitch modes
• activates F/D with no A/P or F/D active
Second push - activates autothrottle in THR REF using GA reference thrust.
You will see that there is no particular reference to the changes to LNAV with the second push for the 747, (in fact no mention of LNAV at all in the whole TOGA section), whereas this is specifically mentioned in the 777 case.
Personally I don't think I have ever met this situation - (having never seen a TOGA press/ LNAV/TOGA press situation), so as always, I am prepared to be incorrect, as will PSX in this case, but I don't think so.
Perhaps Hardy can shed some light - but I am *fairly* sure that I am correct :-)
Shouldn't you be in "Dusk-til-Dawn" instead of trawling manuals?- LOL!
Regards,
Peter