Plain English Meaning
A required sign mounted in the cockpit or cabin that tells the pilot what the airplane is allowed and not allowed to do, or how a particular control or system must be used.
Full Definition
A small sign or label permanently fixed inside an aircraft that displays operating limitations, instructions, or warnings required by the airplane's certification and approved flight manual. Placards are part of the airworthiness requirements and must be present, legible, and adhered to by the pilot.
Context Anchor
In intentional spin discussions, a placard may state whether spins are approved, prohibited, or allowed only under certain .