Which of the following is a valid minimum crew position for the 767K-300 ER?

• A. 1L, 1R, 2L, 2R
• B. 1L, 1R, Mlc, 2L, 2R
• C. 1L, 1R, Mlc, 2L
• D. 1L, Mlc, 2L, 2R

Answer: (B)

Long-range operations on the 767K-300 ER require more than just a captain and a first officer in the cockpit. To meet duty-time rules and ensure continued safety during long sectors, the minimum crew includes the two primary pilots plus two relief pilots, plus an additional required role labeled Mlc. This combination guarantees there’s always qualified, rested crew to take over while others rest, keeping the flight properly staffed throughout the journey.

The correct arrangement lists the two main pilots (captain and first officer) along with the two relief pilots and the mandatory Mlc position, satisfying the minimum staffing needs for a long-haul operation. Other options omit either a relief pilot or the Mlc role, which would not meet the defined minimum crew requirements.