Originally Posted by immolated

If finishing your walkaround at D-40 doesn't leave you enough time to find a path around a thunderstorm and read through MELs, you're pretty bad at your job. Arguably "applying your eyes" over the aircraft itself on a walkaround is just as important as anything else you mentioned. Maybe more so, with icing or CSFF considerations. If every mission is a helmet fire you're doing it wrong.