What allows continuation of flight if equipment is inoperative or unserviceable en route?

• A. Immediate return to origin
• B. Continue with any inoperative item
• C. Maintenance Deferral per MEL
• D. No procedure

Answer: (C)

The ability to continue a flight with equipment inoperative or unserviceable is governed by the Minimum Equipment List. The MEL catalogs which inoperative items can be deferred and the exact conditions under which the flight may proceed, so long as the deficiency won’t compromise safety and maintenance is scheduled. When an item becomes inoperative en route, the crew checks the MEL and, if the deficiency is authorized for deferral, follows the specified procedures to dispatch to a destination or alternate with the defect still unfixed. This provides a legal, safe pathway to continue the trip rather than forcing a return, and it prevents unnecessary cancellations while ensuring the issue is addressed later.