Iberia flight IB539 declared an emergency and diverted to Porto due to landing gear issue

An Iberia flight IB539 from Vigo (VGO) to Madrid (MAD) declared an emergency (squawk 7700) and diverted to Porto (OPO) due to a landing gear issue.

The aircraft involved, Airbus A320-216, registration EC-LXQ, has no other record in our database at the time of publication.