A Jet2 flight bound for Madeira has reportedly made an emergency landing at Porto after the pilot fainted in the cockpit.
The Boeing 757 was on its way from Manchester to the holiday island when the drama happened.
The pilot is understood to have been taken to hospital on arrival.
The alarm is said to have been sounded around 10.20 am local time today and a runway was closed for half an hour till 11 am so the emergency landing could take place.
Airport sources told local media the airport was now operating normally.
Medical responders sad they had received a request to assist a 40-year-old man who was taken to hospital “as a precaution.”
A spokeswoman for Jet2 said: “Flight LS765 from Manchester to Funchal diverted to Porto as a precautionary measure this morning, due to one of the pilots feeling unwell.
“A standby aircraft and replacement crew will be flown to Porto so that we can get customers on their way to Funchal as soon as possible.”