airspace control system in a sentence

1. It was used for determining the locations of the first Swiss airspace control system the SRF Airspace monitoring and management system.
2. Today, the project has delivered its equipment to the government, creating the SIPAM ( Amazonian Protection System ) and enhancing the Brazilian Airspace Control System.
3. "I would not treat ( the incident ) as something that raises questions about the tightness of our airspace control system, " he said.
4. It's difficult to find airspace control system in a sentence.