Ops specs describe how an airline is allowed to operate.

• A. It describes weather minimums only.
• B. It describes the airline's marketing strategy.
• C. It describes crew scheduling procedures.
• D. It describes an agreement with the FAA detailing how, what, when, and where the airline may operate.

Answer: (D)

Operational specifications are the FAA-approved authorization that defines the exact scope of an airline’s operations. They form a formal agreement with the FAA about how, what, when, and where the carrier may operate—covering details like permitted routes, airports, aircraft types, operating rules, and timeframes. This is why describing an agreement with the FAA detailing the operational limits best captures the purpose of ops specs. Weather minimums and crew scheduling procedures come from other regulatory or internal sources, and marketing strategy isn’t part of this regulatory authorization.