aircraft:
  - id: 1
    subfleet_id: 1
    name: Boeing 747-400
    registration: NC17
    tail_number: 17
  - id: 2
    subfleet_id: 2
    name: Boeing 777-200
    registration: NC20
    tail_number: 20
  - id: 3
    subfleet_id: 1
    name: Boeing 747-400-PW
    registration: PW744
    tail_number: 207X

subfleets:
  - id: 1
    airline_id: 1
    name: 747-400 Winglets
    type: 744W
    fuel_type: 1
    fuel_capacity: 2000
  - id: 2
    airline_id: 1
    name: 777-200 LR
    type: 772-LR
    fuel_type: 1
    fuel_capacity: 1000