Yes, a miserably hot airplane is no fun. Just curious...Do your guys' FOMs or SOPs give a temperature limitation for the avionics? If the cockpit gets above 95F for us; it's APU on and Cockpit pax on.

It isn't written down anywhere besides a general "passenger comfort." My technique (read, personal SOP) is whenever I see the ECS actual temp for the cockpit or anywhere in the cabin go above 25C (77F), it's time to crank the APU. Easy enough for me to remember and keeps complaints to a minimum.

Thank you!!
I have heard from multiple crews now about captains who forbid to turn it on until 5prior to push. Personally I’m off the gate by then if at all possible.
My point is, passenger comfort is paramount! And a 90degree cabin is actually a safety issue, likely to cause a medical emergency.

If you’re warm, or the cabin is warm please turn on the APU!
And start it before fueling if it’s warm outside, that way you don’t have to wait for fueling to finish if you’re concerned.
Call the fueler back if you need it. Though I’ve never seen it be an issue.

X2
Joking aside, this is actually typical. They’ll leave it open with no hose attached. Look outside.

I’m thinking about coming back with a new username APUturnNburn

I hear that, I've thought about giving mine away and doing NotoriusP.I.C.

My buddy came up with it

Again, I don't really see why we have to wait for fueler finish ed doing their job, see my above post, AOM only says "MAY NOT".

idk, "MAY NOT", sounds pretty restrictive and definitive and isn't up for interpretation IMO...

if theres no more fuel coming onto the a/c and the fuel panel is still open then I'd crank it.

But then why in the AOM the next sentence say 'DO NOT' during APU failed to start or it shuts off itself? Why not just make it an any scenario 'a no matter what happen thing'.

Check below, only the word MUST means mandatory.
https://www.faa.gov/about/initiative...les/mandatory/

Ask yourself “how would I argue my case to the feds”, I think you’ll have your answer.

Exactly! How can you start it at D-5 when you push at D-8? I don't understand... I always tell the gate agents "hey, we'd like to get out of here early" (especially on go home day). Never had any complaints about doing that.