Under 2026 aviation regulations, pilots are allowed to sleep in the passenger cabin (including First or Business Class) only if the aircraft does not have a dedicated Crew Rest Compartment (CRC). On long-haul flights with "augmented crews" (3 or 4 pilots), sleep is mandatory to prevent fatigue. A supportive peer "bunk" insight: most large jets like the A350 or 787 have hidden "bunk rooms" above the ceiling. However, if these are unavailable or the flight is a medium-haul "heavy" operation, a specific seat in First Class will be blocked out with a curtain for pilot rest. This is not a "luxury perk" but a safety requirement; at least one or two pilots must always be awake at the controls while their colleagues take their scheduled "bunk rest" to ensure they are sharp for the critical landing phase.