Drone Rules Near MOD St Athan

About MOD St Athan

MOD St Athan is located in the Vale of Glamorgan, approximately 15 miles south-west of Cardiff. The site has a long history as a Royal Air Force maintenance and training station, and today operates primarily as a defence technology and aerospace centre. The Aero Centre of Excellence (now part of the broader Welsh defence and aerospace enterprise zone) is based here.

While the airfield is not a front-line operational base in the same manner as RAF Valley, it retains active military status. Defence contractors, military vehicle testing, and aerospace development work continue at the site. The runway remains operational, and aircraft movements — including military and test flights — occur regularly.

The Dual-Airfield Challenge: St Athan and Cardiff Airport

One of the most important considerations for drone pilots in this area is the close proximity of MOD St Athan to Cardiff Airport (EGFF). The two airfields are situated approximately 5 miles apart, and their respective airspace restrictions overlap in certain areas.

• Cardiff Airport FRZ: Cardiff has its own extensive FRZ protecting commercial aviation operations
• MOD St Athan FRZ: The military FRZ adds a second layer of restriction immediately to the east
• Combined effect: A large swathe of the Vale of Glamorgan, from Rhoose in the west to Llantwit Major in the east, falls within one or both FRZs

FRZ Boundaries at MOD St Athan

The FRZ at MOD St Athan follows the standard UK aerodrome pattern under the Air Navigation Order 2016:

• Approximately 2.5 nautical miles radius centred on the aerodrome reference point
• Rectangular extensions along the runway centre line

The runway at St Athan is orientated roughly east-west, meaning the rectangular extension zones stretch towards the Bristol Channel coast to the south and towards the A48 corridor to the north.

Areas Likely Affected

• St Athan village and the MOD site perimeter
• Llantwit Major (partially within the FRZ boundary)
• Eglwys Brewis and surrounding farmland
• Sections of the Glamorgan Heritage Coast near St Athan
• The B4265 corridor between Llantwit Major and the airport

MATZ and Military Airspace

As a military airfield, MOD St Athan may have a Military Aerodrome Traffic Zone extending beyond the standard FRZ. The MATZ typically comprises:

• A 5-nautical-mile radius circle from the surface to 3,000 feet above aerodrome level
• Stub extensions along the approach paths

However, the operational status of the MATZ at St Athan may vary depending on the level of military flying activity. Some MOD airfields maintain a permanent MATZ; others activate it as required. Always check the latest aeronautical information and NOTAMs for the current status.

CAA and MOD Regulations

The following rules apply to all drone operators near MOD St Athan:

1. No FRZ entry: Flying within the Flight Restriction Zone without prior authorisation is a criminal offence
2. Military security: Drone flights near military installations may be investigated under national security legislation. Do not attempt to photograph or film military facilities, equipment, or personnel
3. CAA registration: All drones weighing 250g or more (or carrying a camera) require a valid Operator ID and Flyer ID
4. 120m altitude limit: Maximum 120 metres above ground level in uncontrolled airspace outside the FRZ
5. Visual line of sight: Maintain direct visual contact with your drone at all times

Penalties for Airspace Incursion

Unauthorised drone activity near MOD St Athan carries severe consequences:

• Criminal prosecution under the Air Navigation Order 2016 — unlimited fine and up to five years' imprisonment
• Security investigation by Ministry of Defence Police or the wider security services
• Counter-drone measures: The MOD has the authority and capability to detect, track, and if necessary neutralise unauthorised drones near military sites
• Equipment seizure: Your drone and associated equipment may be seized as evidence

Safe Flying Locations in the Vale of Glamorgan

Despite the dual-airfield restrictions, there are areas in the Vale of Glamorgan where drone flying may be possible, subject to standard CAA regulations:

• East of Barry: Areas towards Sully and Lavernock Point (verify against Cardiff CTR)
• West of Llantwit Major: Sections of the Heritage Coast beyond the St Athan FRZ boundary
• Northern Vale: Inland areas north of the A48 may fall outside both FRZs, but always verify

In all cases, use the NATS Drone Assist app to confirm your planned location is clear of all restrictions before flying.

How to Request Permission

If you need to fly a drone within the MOD St Athan FRZ, contact the Ministry of Defence or the station's air traffic management unit. Expect a thorough assessment process, including:

• Full details of your CAA registration and any operational authorisation
• The purpose of your flight and detailed location information
• Security vetting may be required for flights within or near the MOD site perimeter
• Permission is granted at the MOD's discretion and may be subject to strict conditions

Sub-250g Drones

As with all UK aerodromes, the FRZ restriction applies to drones of every weight class. Sub-250g drones have no exemption from FRZ rules. Near a military site, even the smallest drone is treated as a potential security concern.

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