Glasgow Airport is closing its runway following an incident involving a small aircraft. Multiple reports state that the incident occurs during or around a landing, prompting airport operations to pause as safety teams respond on site. Fire crews are reported to be deployed to the runway area. As a result of the closure, flights are disrupted: services are delayed and some aircraft are reported to be turned back to the terminal rather than continuing operations. The reports indicate that the runway closure is the main operational impact, used to manage the incident and allow responders to assess the situation. The outlets agree that flights are affected immediately after the incident, with delays continuing while the runway remains closed. Details beyond the fact of the runway closure and the involvement of a small aircraft are limited in the provided accounts. Further updates would depend on official statements from the airport or aviation authorities about what caused the incident and when normal operations resume.