A glass cockpit is an aircraft flight deck that uses digital screens instead of many separate round gauges. It matters because pilots must read speed, altitude, direction, engine status, and warnings quickly and accurately. By placing key information on bright displays, a glass cockpit can reduce clutter and help pilots notice changes sooner.
Modern airliners, business jets, helicopters, and many training aircraft use this technology.
Key Facts
- The Primary Flight Display, or PFD, usually shows attitude, airspeed, altitude, vertical speed, and heading.
- The Multifunction Display, or MFD, can show navigation maps, engine data, weather, traffic, checklists, and system pages.
- Airspeed conversion formula: 1 knot = 1.852 km/h.
- Altitude conversion formula: 1 ft = 0.3048 m.
- Vertical speed relationship: altitude change = vertical speed x time.
- Glass cockpits improve situational awareness, but pilots must still cross-check instruments and understand backup systems.
Vocabulary
- Glass cockpit
- A flight deck that presents flight and aircraft information on digital displays instead of mostly analog gauges.
- Primary Flight Display
- The main screen that shows the pilot the aircraft attitude, speed, altitude, climb rate, and heading.
- Multifunction Display
- A digital screen that can show different information pages such as maps, weather, engine data, and checklists.
- Attitude indicator
- An instrument display that shows the aircraft pitch and bank relative to the horizon.
- Situational awareness
- A pilot's understanding of where the aircraft is, what it is doing, and what is likely to happen next.
Common Mistakes to Avoid
- Confusing the PFD with the MFD is wrong because the PFD is mainly for basic flight control information, while the MFD is mainly for maps, systems, and selectable data pages.
- Assuming digital screens fly the airplane by themselves is wrong because a glass cockpit displays information, while the pilot or autopilot still controls the aircraft.
- Ignoring backup instruments is wrong because screens and electrical systems can fail, so pilots must know how to use standby instruments.
- Reading only one number on the display is wrong because safe flying requires cross-checking speed, attitude, altitude, heading, and warnings together.
Practice Questions
- 1 An aircraft on the PFD shows an airspeed of 120 knots. What is this speed in km/h using 1 knot = 1.852 km/h?
- 2 A pilot climbs at 700 ft/min for 6 minutes. How many feet of altitude are gained, and what is that gain in meters using 1 ft = 0.3048 m?
- 3 A glass cockpit warning light appears while the MFD shows an engine data page and the PFD shows normal attitude and altitude. Explain why a pilot should not focus on only one display.