S T A T U T O R Y I N S T R U M E N T S 2021 No. 514  CIVIL AVIATION  The Air Navigation (Restriction of Flying) (Crawley)  (Emergency) Regulations 2021  Made - - - - at 4.55 p.m. on 26th April 2021  Coming into force - - with immediate effect  The Secretary of State for a reason affecting the public interest deems it necessary to restrict flying  in the area specified in the Schedule by reason of an emergency having arisen in that area.  The Secretary of State makes the following Regulations in exercise of the powers conferred by  article 239 of the Air Navigation Order 2016( a ).  1.  These Regulations may be cited as the Air Navigation (Restriction of Flying) (Crawley)  (Emergency) Regulations 2021 and come into force with immediate effect.  Citation and commencement  Restricted airspace  2.  No aircraft is to fly below 2,400 feet above mean sea level over the area specified in Column  1 of the Schedule, being an area bounded by a circle of the radius specified in Column 2 and  centred on the position specified in Column 3.  3.  These Regulations do not apply to any aircraft flying with the permission of the Sussex  Police.  Signed by authority of the Secretary of State for Transport  David J Best Grade 7  Department for Transport  At 4.55 p.m. on 26th April 2021  ( a ) S.I. 2016/765, to which there are amendments not relevant to these Regulations. 