Originally Posted by
Denti
By the way, haven't seen any SOP that requires the switch to be off for push-back, that is what the pin on the nosewheel is there fore, and its status is shown as a line on the ECAM.
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We used to have this SOP for quite a long time, owing I think to an incident where something failed, leading to the NWS being pressurised and the tow bar swinging around once disconnected. A long time ago now and I cannot remember the details, but a modification was eventually made and the NWS switch could be left on for pushback.