To protect them from the elements, allow work in sheltered conditions and leave the apron are cleaner.
Aeroplanes
Aeroplanes are kept in large sheds called 'Hangers'
Hangers maybe...
Aeroplanes are kept in large sheds at an airport called Hangers.
Airplanes can be parked in areas at airports or at hangers if they belong to a company.
Aeroplanes are sometimes parked in hangars or more often on what is called the 'apron' in front of the hangars.
They are called airplane hangers.
Airplanes park on the ground. They are commonly parked in hangars, on a paved parking area at the airport called a ramp, or sometimes just tied down in the grass.
The collective nouns for aeroplanes are a flight of aeroplanes or a squadron of aeroplanes.
Collective nouns for aeroplanes are a flight of aeroplanes or a squadron of aeroplanes..
"Close the hangers" does not have a specific meaning on its own. It could be a command to shut or secure hangers in a closet, or it could be a metaphorical phrase that needs further context to understand its intended meaning.
aeroplanes can reverse