Passenger Boarding with Engine Running

[EASAPARTACADEMY]

Originally Posted by poldek77

Maybe not exactly what you are looking for but somehow related.
"Refuelling with One Engine Running" is the name of a supplementary procedure that I have found in the QRH of an operator using 737.
Hope it helps.


General
Refueling with one engine running is permitted only on such airports where no ground start equipment is available and the inoperative APU cannot be repaired with existing facilities.
A detailed briefing is required with cabin crew by the commander.
Procedure
The following procedure shall be applied:
• The airplane shall be positioned into the wind.
• Passengers must be disembarked.
• The airport fire department must be alerted to standby at the airplane during the entire refuelling procedure.

Thank you. Maybe a 737 guy can confirm the validity for B737. Though for A320 its still valid as it is documented in the latest FCOM. So in the absence of any other document or bulletin, based on this procedure (refueling with one engine running) one can assume that its not illegal to carry out passenger boarding with one engine running. I mean that's the picture visible so far.