From 30 March 2017, for flight within the RMZ aircraft commanders must comply with one of the following:
(a) Establish satisfactory two-way RTF communication with and pass pertinent flight details to Hawarden Radar (123.350 MHz) prior to entering the RMZ. Maintain two-way communication with Hawarden Radar whilst operating inside the RMZ, unless otherwise instructed.
(b) Display the Hawarden Frequency Monitoring Code (FMC) 4607 with Mode C as detailed in ENR 1.6 paragraph 2.6, UK SSR Code Allocation Plan, and monitor Hawarden Radar (123.350 MHz) prior to entering and whilst inside the RMZ. Pilots must maintain a listening watch and establish two-way RTF communication, if directed, whilst operating inside the RMZ. Selection of the FMC does not imply receipt of an ATC service and pilots remain responsible for navigation, separation, terrain clearance, and are expected to remain outside of Controlled Airspace at all times. When a pilot leaves the RMZ they should deselect the FMC.
(c) Non-radio aircraft should contact Hawarden ATC by telephone (01244-522012) or email (email@example.com) prior to commencing any planned flight that will enter or cross the RMZ, supplying aircraft registration, type, estimates and points of entry/exit, planned altitudes and duration/activity in the RMZ (if applicable). On receipt of this information an acknowledgement will be issued by ATC Hawarden.
(d) Conduct flight in accordance with valid Letter of Agreement with Hawarden ATC.