Final answer:
During a ramp check, you can find a copy of the Air Carrier Certificate (AOC) on board the aircraft, in the electronic flight bag system if available, or by contacting the airline's operations or compliance department.
Step-by-step explanation:
If you are ramp checked and need a copy of your Air Carrier Certificate (AOC), the first place to look would be with the flight operations documentation on board the aircraft. In accordance with regulations, the AOC should be carried on board during all operations. Alternatively, a digital copy may be accessible if the airline or operator has an electronic flight bag (EFB) system in place.
If you cannot find the AOC on board, contact your company's operations or compliance department to obtain a copy. Airlines are required to have an AOC readily available and should have protocols for such situations.