1. Navigation of an aeroplane solely by instruments

Type of: navigation, pilotage, piloting

• open fire
• open fireplace
• open fracture
• open frame
• open house
• open interval
• open letter
• open marriage
• open order
• open primary
• open sandwich
• open season
• open secret
• open sesame
• open shop
• open sight
• open society
• Open University
• open up
• open weave
• open-air
• open-air market
• open-air marketplace
• open-and-shut
• open-angle glaucoma