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.
Plain English
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.
Context Anchor
In intentional spin discussions, a placard may state whether spins are approved, prohibited, or allowed only under certain conditions.
Derivation
From the French 'placard,' meaning a poster or notice fixed to a wall. The aviation use keeps that core idea: a fixed, visible notice the pilot is expected to read and obey.
Why Pilots Care
Following placard instructions ensures compliance with aircraft limitations and can be critical during emergency procedures such as spin recovery.
Intuition Check
Do not think of a placard as just a decorative sign or reminder. In an aircraft, a placard can state an operating limit the pilot is required to follow.
Example Sentence 1
Before attempting any spin training, the pilot checked the cockpit placard to confirm the airplane was approved for intentional spins.
Example Sentence 2
The pilot confirmed the fuel capacity listed on the placard matched the aircraft’s actual tanks.