The Emergency Substitute Pilot ("ESP") checklist from Checkmate Aviation provides crucial flight information for non-pilots in the most simple and basic terms for use in the event the real pilot is incapacitated.

Instead of packing the durable, 2-sided card with all the data and flight procedures that pilots use, the ESP Checklist uses distinctive visual cues and simplified terminology to guide the non-pilot through the crucial elements of gaining control of the aircraft, reaching help on the radio and even landing.

The simplified graphical format could be the difference between life and death in this "worst case scenario."

Read about the ESP Checklist in this article from GA News.