Regarding the EFIS, which statement must be true for takeoff?

Regarding the EFIS, which statement must be true for takeoff?

• A. Only the primary flight display needs to be operative for takeoff.
• B. At least one EFIS display is sufficient for takeoff.
• C. All the listed items must be operative for takeoff.
• D. EFIS status is not checked for takeoff.

Answer: (C)

Takeoff relies on complete and reliable visibility of attitude, airspeed, altitude, and flight-path information, all provided by the EFIS. The Electronic Flight Instrument System distributes critical data across multiple displays, so having every EFIS component involved in takeoff functioning ensures the crew has full, redundant, cross-checked information during rotation and initial climb. If any EFIS element that supports takeoff is inop, the crew would lack essential data and the procedure requires that condition to be considered non-acceptable for takeoff. That’s why all listed EFIS items need to be operative for takeoff.

Takeoff relies on complete and reliable visibility of attitude, airspeed, altitude, and flight-path information, all provided by the EFIS. The Electronic Flight Instrument System distributes critical data across multiple displays, so having every EFIS component involved in takeoff functioning ensures the crew has full, redundant, cross-checked information during rotation and initial climb. If any EFIS element that supports takeoff is inop, the crew would lack essential data and the procedure requires that condition to be considered non-acceptable for takeoff. That’s why all listed EFIS items need to be operative for takeoff.