# Relations

## AircraftManufacturers

- HasMany AircraftType

## AircraftTypes

- BelongsTo AircraftManufacturers
- **TODO** BelongsTo Typeratings (External DB)
- HasMany Aircrafts

## Aircrafts

- BelongsTo AircraftTypes
- BelongsToMany AircraftTypeGroups
- **TODO** BelongsTo Airports (External DB, Multiple)

## AircraftTypeGroups

- BelongsToMany AircraftTypes

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