Applications for the approval of flight conditions can be sent at any time by fax, e-mail or regular mail to:
European Aviation Safety Agency
Applications and Procurement Services Department
Manager of the Product Applications Management Section
Postfach 10 12 53, D-50452 Köln, Germany
Fax: + 49 (0)221-89990 4455
E-Mail: flightconditions [at] easa [dot] europa [dot] eu
The process for applying for the PtF from your Competent Authority is detailed on their website or in their publications.
In the event of an emergency situation occurring outside office-hours, during week-ends or public holidays, your Competent Authority can contact EASA directly.