Definition
A cockpit display mounted on the instrument panel below the pilot's normal forward line of sight, requiring the pilot to look down into the cockpit to read flight, navigation, or systems information. The primary flight display (PFD) and multifunction display (MFD) on a glass-cockpit panel are typical examples.
Plain English
A screen built into the main instrument panel that the pilot has to glance down at to read. It shows flight data like attitude, altitude, airspeed, and navigation.
Context Anchor
Seen in instrument procedures, glass-cockpit discussions, and comparisons between panel-mounted displays and information projected in the pilot’s forward view.
Derivation
Named simply for where the pilot has to look to read it — down, into the panel — as opposed to a head-up display, where the same information is projected onto a transparent screen at eye level.
Why Pilots Care
Affects how a pilot divides attention between instruments and the outside view, directly influencing situational awareness and workload.
Intuition Check
Head-down does not mean the pilot must keep their head down all the time. It means the information is displayed inside the cockpit, so the pilot must look away from the forward outside view to read it.
Example Sentence 1
The captain briefed that during the approach he would fly primarily off the head-down display while the first officer monitored the HUD.
Example Sentence 2
Modern aircraft often combine HDDs with a HUD so the pilot can keep eyes forward for most tasks.