Reminds me me of when we used to forget about a A/C in Riyadh with Saudia for a few days then bring it to the gate when it was heat soaked as we called it, had to run packs with apu; on ground a/c as well. The seats,flooring everything just retained the heat, big delays, would take hours before even the brave crew would start their checks.
Keep them flying boys!!!!!!!!
