"Doors latched" is one of my checklist items. I just push on the
door(s), and if one opens, I latch it.

Same here. Although, since we usually have the kids in the back (and
a spouse in the right seat), so the last thing we call out before
advancing the throttle is "Door latched and seat belts on?"

You'd be surprised how many times it's not latched, or one of us
doesn't have a seat belt/shoulder harness buckled.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"