GA and Checklists again.
Personally, they are memory items, however the checklist sits on my knee and I ‘check it off’ as such at the end of each category. You would be surprised how easily distractions during pre start can impact the flow.
Startle clearly got the PIC here. However, I think this report is a must read for all, don’t underestimate passenger briefings, things like opening a door and removing a seatbelt, emergency exit path, in a passenger briefing. It can save one’s life.