Originally Posted by
alexban
VAPILOT2004, can you,please,be a bit more specific about the Boeing official procedure for the NG? where it says so? pg nr?
thks brgds
The 1 > 2 'standard' start procedure comes from the amplified start checklist from Alteon where it states words to the effect that the normal engine start sequence is 1 then 2.
If fuel balance (per Arba re:APU) or cabin comfort (as I suggest) are not at issue, the choice can also be at the captain's discretion for many operators.
Above examples not withstanding, this seems to be not unlike the switching off on igniter usage - some will go by even-odd days, others eastbound or westbound flights, while many will have the crew alternate on segments using L then R igniters. (or vv)
Cheers !