747-400 max operating temp?

[wilsr]

I can't remember what is the max T/O temp at sealevel for the RR 524 -400: just a casual query since the YSSY temp today was 45'!

[Capt Fathom]

54 degrees C (or there abouts !) :uhoh:

[anybodyatall]

Paint that plane to look like a bat..... (as in flying out like a bat out of hell with those high temps!). Very impressive engineering!