The document is a bit equivocal on the use on serif vs sans-serif fonts but eventually states that sans-serifs are usually more legible. Interestingly, US pocke

The document is a bit equivocal on the use on serif vs sans-serif fonts but eventually states that sans-serifs are usually more legible. Interestingly, US pocket checklists (for use in flight) use a serif font for the routine checklists and sans-serif for the emergency procedures. I wonder if there was some research that supports that decision. ([1] is an F-14 checklist I found on the internet but other platforms' checklists have identical formatting.) [1] http://www.avialogs.com/index.php/en/aircraft/usa/grumman/f-14tomcat/navair-01-f14aap-1b-natops-pocket-checklist-f-14b-aircraft.html http://www.avialogs.com/index.php/en/aircraft/usa/grumman/f-...