Ryanair is looking for a permit to work household UK air courses which it says it might require in case of a hard Brexit.
The aircraft said it had connected to UK controller, the Civil Aviation Authority, (CAA) for a UK Air Operator's Certificate.
Ryanair CEO, Michael O'Leary, has over and again cautioned about the impact of Brexit on flying.
He already cautioned that flights between the UK and the EU could be grounded for quite a long time after Brexit.
"Ryanair today (2 January) affirmed that an auxiliary organization Ryanair UK recorded an application on 21 December keep going for an Air Operator's Certificate (AOC) with the Civil Aviation Authority in the UK.
"This might be required for Ryanair's three UK residential courses in case of a hard Brexit in March 2019."
Ryanair has a generally modest number of UK local courses.
Some of those courses have been suspended over the winter as a major aspect of a more extensive establishing after Ryanair conceding "fouling up" pilot occasion lists in September.
The aircraft was the blamed by the CAA, which undermined Ryanair with lawful activity for "perseveringly deceptive" travelers about rights.
The activity came after Ryanair scratched off a further 18,000 flights in September.