SSR (Squawk) Codes

These are the 4 digit numbers entered into an aircraft transponder, usually given by the ATC providing them with a radar service unless they are assigned them due to a specific function or displaying them to signify a specific function. These for digit codes contain digits 0 to 7 but will not contain the numbers 8 or 9. You can usually search the text on this page by using the function “CTRL+F”

Local Squawk Codes

If you are tracking aircraft in Lincolnshire I have prepared a handy 1 Page guide to Local Squawk Codes to save you time scrolling through the full list. You can download it here.

List of Secondary Surveillance Radar (SSR) Squawk Codes last updated 07/10/24 (For a definitive list please see the current AIP in section ENR 1.6)

Codes / Series	Controlling Authority / Function
* 0000	SSR data unreliable
* 0001	Height Monitoring Unit (See note 4)
* 0002	Ground Transponder Testing (Refer to ENR 1.6, paragraph 2.2.3)
* 0003	Surrey/Sussex HEMS (HLE60)
0004 — 0005	Scottish Non-standard Flights
* 0006	British Transport Police ASU
* 0007	Off-shore Safety Area (OSA) Conspicuity (See note 9)
* 0010	This code may be used when flying in the vicinity of Birmingham, operating outside of Birmingham CTR/ Birmingham CTA and monitoring Birmingham Radar frequency (Refer to ENR 1.6, paragraph 2.2.5)
* 0011	Aircraft operating in the vicinity of Bournemouth Control Zone and monitoring Bournemouth Radar Frequency West (Refer to ENR 1.6, paragraph 2.2.5)
* 0012	This code may be used when flying in the vicinity of London City and London Heathrow and monitoring Thames Director frequency (Refer to ENR 1.6, paragraph 2.2.5)
* 0013	This code may be used when flying in the vicinity of London Luton and monitoring Luton Radar frequency (Refer to ENR 1.6, paragraph 2.2.5)
* 0014	Kent Air Ambulance (HLE21)
* 0015	Essex Air Ambulance (HLE07)
* 0016	Thames Valley Air Ambulance (HLE24)
* 0017	London Air Ambulance (HLE27)
* 0020	Air Ambulance Helicopter Emergency Medivac
* 0021	Fixed-wing aircraft (Receiving service from a ship)
* 0022	Helicopter(s) (Receiving service from a ship)
* 0023	Aircraft engaged in actual SAR Operations
* 0024	Radar Flight Evaluation/Calibration (Refer to ENR 1.6, paragraph 2.2.2.2)
0025	Scottish Non-standard Flights
* 0026	Special Tasks
* 0027	London Control (Swanwick) Ops Crossing/Joining CAS (See note 7)
* 0030	FIR Lost
* 0031	Hertfordshire Air Ambulance (HLE55)
* 0032	Aircraft engaged in police air support operations
* 0033	Aircraft Paradropping (Refer to ENR 1.6, paragraph 2.2.2.2)
* 0034	Antenna trailing/target towing/glider towing
* 0035	Selected Flights – Helicopters
* 0036	Helicopter Pipeline/Powerline Inspection Flights
* 0037	Royal Flights – Helicopters
* 0040	Civil Helicopters North Sea
* 0041 — 0061	Police Air Support
0062 — 0077	No 1 Air Control Centre


* 0100	HQ Air Command (See note 15)
0101 — 0117	Transit (ORCAM) Brussels
0120 — 0137	Transit (ORCAM) Germany
0140 — 0177	Transit (ORCAM) Amsterdam


* 0200	HQ Air Command (See note 15)
0201 — 0277	Allocated to NATS as CCAMS redundancy


* 0300	HQ Air Command (See note 15)
0301 — 0377	Assigned by CCAMS


* 0400	HQ Air Command (See note 15)
* 0401	RAF Leeming Conspicuity
0401 — 0417	Birmingham Radar
0401 — 0437	Ireland Domestic
0401 — 0450	Exeter Approach
0401 — 0461	RAF Lakenheath
0402 — 0437	RAF Leeming
* 0420	Coventry Conspicuity
0421 — 0427	Farnborough Zone/Approach Radar IFR/SVFR
* 0430	Hawarden Airport Conspicuity Code
0430 — 0437	Edinburgh Approach
0430 — 0456	Farnborough LARS West
0431 — 0446	Hawarden Approach
* 0440	This code may be used when flying in the vicinity of Edinburgh, operating outside of Edinburgh CTR/ Edinburgh CTA and monitoring Edinburgh Radar frequency (Refer to ENR 1.6, para 2.2.5)
0441 — 0443	Edinburgh Approach
* 0450	Blackpool Basic Service Conspicuity
* 0451	Blackpool Procedural Service Conspicuity (See note 13)
* 0452	Morecambe Bay Helicopter Conspicuity
* 0453	Liverpool Bay Helicopter Conspicuity
0455	Ekofisk RMZ
* 0457	Farnborough LARS West VFR Conspicuity Code for periods when no discrete SSR code is available
0460 — 0467	Farnborough Zone VFR
* 0462 — 0467	USAFE autonomous use in EGD323 complex and Vale of York AIAA.
0470 — 0477	Allocated to NATS as CCAMS redundancy


* 0500	HQ Air Command (See note 15)
0501 — 0577	Assigned by CCAMS


* 0600	HQ Air Command (See note 15)
0601 — 0637	Transit (ORCAM) Germany
0640 — 0677	Transit (ORCAM) Paris


* 0700	HQ Air Command (See note 15)
0701 — 0727	Transit (ORCAM) Maastricht
0730 — 0767	Assigned by CCAMS
0770 — 0777	Transit (ORCAM) Maastricht

Codes / Series	Controlling Authority / Function
1000	IFR GAT flights operating in designated Mode S Airspace
1001 — 1067	Transit (ORCAM) Spain
1070 — 1077	Assigned by CCAMS


* 1100	HQ Air Command (See note 15)
1101 — 1137	Transit (ORCAM) Germany
1140 — 1176	Assigned by CCAMS
* 1177	London Control (Swanwick) FIS (Refer to ENR 1.6, paragraph 2.2.2.2 and note 5)


* 1200	HQ Air Command (See note 15)
1201 — 1247	Channel Islands Domestic
1250 — 1257	Assigned by CCAMS
1260 — 1277	Queen Elizabeth Class aircraft carrier operations


* 1300	HQ Air Command (See note 15)
* 1301 — 1306	Assigned by CAA
1307 — 1327	NATO – Air Policing (Air Defence Priority Flights) (See note 6)
1330 — 1377	Transit (ORCAM) Germany


* 1400	HQ Air Command (See note 15)
1401 — 1407	Irish CCAMS Contingency Codes
1410 — 1477	Assigned by CCAMS


* 1500	HQ Air Command (See note 15)
* 1501 — 1577	Battlespace Management Force HQ


* 1600	HQ Air Command (See note 15)
* 1601 — 1677	Battlespace Management Force HQ


* 1700	HQ Air Command (See note 15)
* 1701 — 1727	Battlespace Management Force HQ
1730 — 1746	Newquay Approach
1730 — 1746	Farnborough LARS East
* 1730 — 1767	RAF Spadeadam (See note 8)
1730 — 1776	RAF Coningsby
* 1747	Farnborough LARS East Conspicuity
* 1747	Newquay Conspicuity
1750 — 1757	Farnborough Zone (IFR/SVFR)
1750 — 1756	Newquay Approach
* 1757	Newquay LARS when no discrete SSR code is available
1760 — 1777	RNAS Yeovilton Fighter Control
* 1777	RAF Coningsby Conspicuity

Codes / Series	Controlling Authority / Function
* 2000	Conspicuity when entering United Kingdom airspace from an adjacent region where the operation of transponders has not been required; or when operating within United Kingdom airspace in accordance with IFR and is either not receiving an ATS or has not received a specific instruction from ATS concerning the setting of the transponder; or unless instructed otherwise by ATS, Mode S transponder equipped aircraft on the aerodrome surface when under tow, or parked and prior to selecting Off or STBDY. (Refer to ENR 1.6, paragraphs 2.2.1 e and 2.2.2.1.3)
2001 — 2077	Assigned by CCAMS


* 2100	HQ Air Command (See note 15)
2101 — 2147	Transit (ORCAM) Amsterdam
2150 — 2177	Assigned by CCAMS


* 2200	HQ Air Command (See note 15)
2201 — 2277	Assigned by CCAMS


* 2300	HQ Air Command (See note 15)
2301 — 2377	Transit (ORCAM) France


* 2400	HQ Air Command (See note 15)
* 2401 — 2477	Battlespace Management Force HQ


* 2500	HQ Air Command (See note 15)
2501 — 2577	Transit (ORCAM) Germany


* 2600	HQ Air Command (See note 15)
2601 — 2617	Glasgow Approach
2601 — 2637	RAF Cranwell
2601 — 2645	MoD Boscombe Down
2601 — 2657	Irish Domestic Westbound departures and Eastbound arrivals
* 2620	This code may be used when flying in the vicinity of Glasgow, operating outside of Glasgow CTR/ Glasgow CTA and monitoring Glasgow Radar frequency (Refer to ENR 1.6 para 2.2.5)
2621 — 2630	Aberdeen (Sumburgh Approach)
2631 — 2637	Aberdeen (Northern North Sea Off-shore) (See note 3)
2640 — 2642	RAF Cranwell – Lincolnshire AIAA
2640 — 2657	Aberdeen (Northern North Sea Off-shore – Sumburgh Sector) (See note 3)
2643 — 2644	RAF Cranwell
* 2645	RAF Cranwell Conspicuity
2646 — 2647	RAF Cranwell
2646 — 2647	MoD Boscombe Down – UAS
* 2650	MoD Boscombe Down Conspicuity
2650 — 2653	Leeds Bradford Approach
2651 — 2657	MoD Boscombe Down
* 2654	Leeds Bradford Conspicuity
2655 — 2676	Leeds Bradford Approach
* 2660	Thruxton conspicuity
2660 — 2677	Aberdeen (Northern North Sea Off-shore) (See note 3)
2661 — 2675	Middle Wallop
* 2676	Middle Wallop Conspicuity
2677	Middle Wallop Conspicuity
* 2677	This code may be used when flying in the vicinity of Leeds Bradford and monitoring the Leeds Radar Frequency (Refer to ENR 1.6, para 2.2.5)


* 2700	HQ Air Command (See note 15)
2701 — 2737	Assigned by CCAMS
2740 — 2777	Transit (ORCAM) Zurich

Codes / Series	Controlling Authority / Function
3000	NATO Aircraft receiving a service from AEW aircraft
3001 — 3077	Transit (ORCAM) Zurich


3100	NATO Aircraft receiving a service from AEW aircraft
3101 — 3127	Transit (ORCAM) Germany
3130 — 3177	Transit (ORCAM) Amsterdam


3200	NATO Aircraft receiving a service from AEW aircraft
3201 — 3277	Transit (ORCAM) Turkey – may also be Assigned by CCAMS


3300	NATO Aircraft receiving a service from AEW aircraft
3301 — 3303	Swanwick (Military) Special Tasks
3304 — 3306	Aircraft receiving a service from London D&D Cell
* 3307	D&D Conspicuity Training Fix
3310 — 3367	Swanwick (Military)
3370 — 3377	Allocated to NATS as CCAMS redundancy


3400	NATO Aircraft receiving a service from AEW aircraft
3401 — 3477	Assigned by CCAMS


3500	NATO Aircraft receiving a service from AEW aircraft
3501 — 3507	Transit (ORCAM) Luxembourg
3510 — 3537	Assigned by CCAMS
3540 — 3577	Transit (ORCAM) Berlin


3600	NATO Aircraft receiving a service from AEW aircraft
3601 — 3623	RAF Benson
3601 — 3632	Scottish UK FIS Purposes
3601 — 3634	RAF Waddington
3601 — 3647	Jersey Approach
3601 — 3657	Cardiff Approach
* 3624	RAF Benson Conspicuity
3625 — 3627	RAF Benson
* 3636	This code may be used when flying in the vicinity of Cardiff, operating outside of Cardiff CTR/Cardiff CTA and monitoring Cardiff Approach frequency (Refer to ENR 1.6, para 2.2.5)
* 3637	Wycombe Air Park Conspicuity. Not to be used outside 20 NM from the airfield.
3640 — 3645	RAF Odiham
3640 — 3666	RAF Marham
3640 — 3677	Aberdeen (Northern North Sea Off-shore) (See note 3)
3641 — 3647	BAE Systems Warton
* 3646	RAF Odiham Conspicuity
3646 — 3657	Cardiff Approach
3647 — 3653	RAF Odiham
* 3650	BAE Systems Warton Conspicuity
3651 — 3657	BAE Systems Warton
* 3660	This code may be used when flying in the vicinity of Warton Aerodrome and monitoring Warton Radar frequency (Refer to ENR 1.6, para 2.2.5)
3660 — 3665	Solent Approach (Southampton)
3661 — 3677	BAE Systems Warton
* 3666	Solent Radar Conspicuity
* 3667	RAF Marham – FIS Conspicuity
3667 — 3677	Solent Approach (Southampton)


3700	NATO Aircraft receiving a service from AEW aircraft
3701 — 3706	Norwich Approach
3707	Norwich Basic Service
3710	Norwich Approach
* 3701 — 3717	Military aircraft under service from RN AEW aircraft in South West Approaches
3701 — 3736	RAF Brize Norton
3701 — 3727	Guernsey Approach
3701 — 3767	RAF Lossiemouth
3720 — 3725	RAF Valley
3720 — 3727	RAF Wittering Approach/Director
3720 — 3766	Newcastle Approach
3726	RAF Valley Basic Service
* 3727	This code may be used when flying in the vicinity of RAF Brize Norton, operating outside of Brize Norton CTR and monitoring Brize Norton LARS frequency (Refer to ENR 1.6, paragraph 2.2.5)
* 3727	RAF Valley
3730 — 3736	RAF Valley
3730 — 3747	RAF Wittering Tutor Operations
* 3737	RAF Valley – Visual Recovery
* 3737	RAF Brize Norton Approach Conspicuity
* 3737	This code may be used when flying in the vicinity of Newcastle, operating outside of Newcastle CTR and Newcastle CTA and monitoring Newcastle Radar frequency (Refer to ENR 1.6, para 2.2.5)
3740 — 3745	RAF Brize Norton
3740 — 3747	RAF Valley
* 3750	RAF Wittering Zone Conspicuity (Basic Service)
3750 — 3751	RAF Valley
3750 — 3761	TC Gatwick
3751 — 3757	RAF Wittering Zone Transits
3752	RAF Valley – RIFA
* 3753	RAF Valley – Low Level Helicopters
* 3754	RAF Valley – Special Tasks
3755 — 3756	RAF Valley
3757	RAF Valley Rotary at RAF Mona
3760	RAF Wittering
3760 — 3762	RAF Valley
3761	RAF Wittering – Cranwell/Wittering/Cranwell VFR Transit
* 3762	Shoreham ATS IFR
3762	RAF Wittering
* 3763	Shoreham ATS VFR
3763 — 3765	RAF Valley – Approach/Director
3764 — 3766	Gatwick Tower
3766 — 3767	RAF Valley
* 3767	Redhill Approach Conspicuity
* 3767	Newcastle Approach Conspicuity
3770 — 3777	Western Radar

Codes / Series	Controlling Authority / Function
4000	NATO Aircraft receiving a service from AEW aircraft
4001 — 4077	Transit (ORCAM) France


4100	NATO Aircraft receiving a service from AEW aircraft
4101 — 4177	Transit (ORCAM) Germany


4200	NATO Aircraft receiving a service from AEW aircraft
4201 — 4210	Western Radar
4211 — 4214	Assigned by CAA
4215 — 4247	Assigned by CCAMS
4250 — 4257	Belfast City Approach
4250 — 4267	Aberdeen Approach
4250 — 4277	Humberside Approach
* 4255	This code may be used when flying in the vicinity of Belfast/City, operating outside of Belfast/City CTR/ Belfast TMA and monitoring Belfast Approach frequency (Refer to ENR 1.6, para 2.2.5)
* 4270	This code may be used when flying in the vicinity of Aberdeen Airport and operating outside of the Aberdeen CTR/Aberdeen CTA (Refer to ENR 1.6, para 2.2.5)

4300	NATO Aircraft receiving a service from AEW aircraft
4301 — 4305	Assigned by CAA
* 4306	Lee-on-Solent Conspicuity
4307 — 4317	London Control Non-Standard Flights
4320 — 4327	Ireland Domestic
4320 — 4327	RNAS Yeovilton
4330 — 4337	UK Domestic (Prestwick Centre Special Sector Codes)
4340 — 4353	UK Domestic (Scottish Special Sector Codes)
* 4354 — 4356	Westland Helicopters Yeovil
4357	Ireland Domestic
* 4357	RNAS Yeovilton Conspicuity
4360 — 4361	Oil Survey Helicopters – Faeroes/Iceland Gap
* 4360 — 4367	Westland Helicopters Yeovil
4360 — 4367	RAF Northolt
4370 — 4377	Anglia Radar
4370 — 4377	Ireland Domestic
4370 — 4377	RNAS Yeovilton


4400	NATO Aircraft receiving a service from AEW aircraft
4401 — 4427	Transit (ORCAM) Brussels
4430 — 4477	Assigned by CCAMS


4500	NATO Aircraft receiving a service from AEW aircraft
* 4501	Land’s End GNSS Approach (See note 14)
* 4501	Wattisham Conspicuity
4501 — 4516	Oxford Approach
4501 — 4517	Prestwick Approach
4502 — 4547	Wattisham Approach
4506	RAF Topcliffe
* 4517	This code may be used when flying in the vicinity of Oxford Airport and monitoring Oxford Radar frequency (Refer to ENR 1.6, para 2.2.5)
* 4520	Prestwick Conspicuity
* 4520	Oxford Approach Basic Service
* 4521 — 4527	West Wales Radar (NQY)
* 4530	MoD Aberporth Conspicuity
* 4530	Gloucestershire Airport Instrument Approach Training
4530 — 4546	Plymouth (Military) Radar
4531 — 4537	MoD Aberporth
* 4531	Gloucestershire Airport Conspicuity only to be used within 25 NM and 10,000 FT of the airfield and monitoring the Gloucestershire Airport Frequency
* 4540 — 4542	MoD Aberporth (See note 10)
* 4540 — 4541	RAF Topcliffe Conspicuity Code
* 4543	West Wales Airport UAS Conspicuity Code. Shall only be selected with AFIS direction.
* 4547	Plymouth (Military) Radar conspicuity
4550 — 4567	Plymouth (Military) Radar
4550 — 4567	Isle of Man
4550 — 4570	East Midlands Radar
* 4571	East Midlands LARS Basic Service Conspicuity
* 4572	Aircraft operating outside of East Midlands Controlled Airspace/Zone and monitoring East Midlands Radar frequency (Refer to ENR 1.6, paragraph 2.2.5)
* 4572	Farnborough LARS West VFR Frequency Monitoring Code (Refer to ENR 1.6, paragraph 2.2.5)
* 4573	Costock Helicopters operating inside East Midlands CTR – Conspicuity
* 4574	Southdown Gliding Club Conspicuity
* 4575	Southend Airport Conspicuity
* 4575	Haverfordwest RNP Approach Conspicuity. Only to be used within 20 NM and 10,000 FT of the aerodrome
* 4576	Walney Aerodrome Conspicuity. Only to be used within 25 NM and 10,000 FT of the aerodrome and in communication with Walney ATS.
* 4576	RAF Honington
* 4577	Allocated by the CAA


4600	NATO Aircraft receiving a service from AEW aircraft
* 4601	MoD Ops in Salisbury Plain Training Area (See note 11)
4602 — 4607	Anglia Radar
* 4607	This code may be used when flying in the vicinity of Hawarden and monitoring the Hawarden Radar Frequency (Refer to ENR 1.6 para 2.2.5)
4610 — 4667	Assigned by CCAMS
4670 — 4676	TC Stansted/TC Luton
* 4677	Luton Airport Tower Conspicuity


4700	NATO Aircraft receiving a service from AEW aircraft
4701 — 4777	Assigned by CCAMS

Codes / Series	Controlling Authority / Function
5000	NATO Aircraft receiving a service from AEW aircraft
5001 — 5012	London Control Non-Standard Flights
5013 — 5017	Assigned by CCAMS
5020 — 5036	Farnborough LARS North
* 5037	Farnborough LARS North Conspicuity
5040 — 5047	Assigned by CAA
* 5050	Liverpool Conspicuity
* 5050	This code may be used when flying in the vicinity of Southend and monitoring Southend Radar Frequency (Refer to ENR 1.6, para 2.2.5)
5050 — 5067	Bristol Approach
5050 — 5067	Southend Approach
5051 — 5067	Liverpool Airport
* 5060 (or 5067 for students flying solo)	This code may be used when flying in the vicinity of Liverpool and monitoring the Liverpool Radar Frequency (Refer to ENR 1.6, para 2.2.5)
* 5070 — 5071	Bristol VFR Conspicuity
* 5070 — 5071	RAF Syerston Conspicuity
5072 — 5076	Bristol Approach
* 5077	This code may be used when flying in the vicinity of Bristol Airport, operating outside of Bristol CTR/ Bristol CTA and monitoring Bristol Radar frequency (Refer to ENR 1.6, para 2.2.5)
* 5077	Sherburn-in-Elmet and Leeds East RNP Approach Conspicuity. Only to be used within 20 NM and 10,000 FT of the aerodrome
* 5077	Cumbernauld RNP Approach Conspicuity. Only to be used within 20 NM and 10,000 FT of the aerodrome


5100	NATO Aircraft receiving a service from AEW aircraft
5101 — 5107	Assigned by CAA
5110 — 5137	NATS
5140 — 5177	Assigned by CCAMS


5200	NATO Aircraft receiving a service from AEW aircraft
5201 — 5270	Assigned by CCAMS
5271 — 5277	Transit (ORCAM) Channel Islands


5300	NATO Aircraft receiving a service from AEW aircraft
5301 — 5377	Transit (ORCAM) Barcelona


5400	NATO Aircraft receiving a service from AEW aircraft
5401 — 5477	Assigned by CCAMS


5500	NATO Aircraft receiving a service from AEW aircraft
5501 — 5577	Transit (ORCAM) Barcelona


5600	NATO Aircraft receiving a service from AEW aircraft
5601 — 5647	Transit (ORCAM) Paris
5650 — 5657	Transit (ORCAM) Luxembourg
5660 — 5664	Allocated to NATS as CCAMS redundancy
5665 — 5676	Assigned by CCAMS
5677	Medical emergency in France


5700	NATO Aircraft receiving a service from AEW aircraft
5701 — 5777	Transit (ORCAM) Geneva

Codes / Series	Controlling Authority / Function
* 6000	Uncrewed Air System BVLOS Trial Conspicuity operating within segregated airspace and specifically authorised by CAA (See note 17)
* 6001 — 6037	On loan to CCAMS (See note 16)
6040 — 6077	Swanwick (Military)


* 6100	HQ Air Command (See note 15)
6101 — 6157	Swanwick (Military)
* 6160	Doncaster Sheffield Conspicuity
6160 — 6175	Cambridge Approach
6160 — 6176	Inverness Approach
6160 — 6177	Plymouth (Military) Radar
6161 — 6167	Doncaster Sheffield Approach
* 6170	This code may be used when flying in the vicinity of Doncaster Sheffield, operating outside of Doncaster Sheffield CTR/Doncaster Sheffield CTA and monitoring Doncaster Radar frequency (Refer to ENR 1.6, para 2.2.5)
6171 — 6177	Doncaster Sheffield Approach
* 6176	Cambridge VFR Conspicuity
* 6177	Cambridge IFR Conspicuity
* 6177	Inverness Conspicuity


* 6200	HQ Air Command (See note 15)
6201 — 6257	Assigned by CCAMS
6260 — 6277	Transit (ORCAM) Amsterdam


* 6300	HQ Air Command (See note 15)
6301 — 6377	Assigned by CCAMS


* 6400	HQ Air Command (See note 15)
6401 — 6457	Swanwick (Military) Radar
6460 — 6467	Assigned by CCAMS
6470 — 6477	Allocated to NATS as CCAMS redundancy


* 6500	HQ Air Command (See note 15)
6501 — 6577	CRC Boulmer


* 6600	HQ Air Command (See note 15)
6601 — 6677	Transit (ORCAM) Germany


* 6700	HQ Air Command (See note 15)
6701 — 6777	Transit (ORCAM) France

Codes / Series	Controlling Authority / Function
* 7000	Conspicuity when operating within United Kingdom airspace in accordance with VFR and have not received a specific instruction from ATS concerning the setting of the transponder. (Refer to ENR 1.6, paragraph 2.2.2.1.3)
* 7001	Military Fixed-wing Low Level Conspicuity/ Climb-out (Refer to ENR 1.6, paragraph 2.2.2.2)
* 7002	Danger Areas General
* 7003	Red Arrows Transit/Display
* 7004	Conspicuity Aerobatics and Display (Refer to ENR 1.6, paragraph 2.2.2.2)
* 7005	High-Energy Manoeuvres
* 7006	Autonomous Operations within TRA and TRA (G) (Refer to ENR 1.6, paragraph 2.2.2.2)
7007	Open Skies Observation Aircraft
* 7010	Operating in Aerodrome Traffic Pattern (Refer to ENR 1.6, paragraph 2.2.2.2)
* 7011	This code may be used when flying in the vicinity of Southampton Airport and monitoring Solent Radar frequency (Refer to ENR 1.6, paragraph 2.2.5)
* 7012	This code may be used when flying in the vicinity of London Gatwick and monitoring Gatwick Director frequency (Refer to ENR 1.6, para 2.2.5)
* 7013	This code may be used when flying in the vicinity of Stansted and monitoring Stansted Radar frequency (Refer to ENR 1.6, para 2.2.5)
7014 — 7017	Allocated to NATS as CCAMS redundancy
7020 — 7027	Assigned by CCAMS
* 7030	RNAS Culdrose Conspicuity
7030 — 7044	Aldergrove Approach
7030 — 7046	TC Thames/TC Heathrow
7030 — 7066	Teesside International Airport
7030 — 7077	Aberdeen (Northern North Sea Off-shore) (See note 3)
7031 — 7077	RNAS Culdrose
* 7045	This code may be used when flying in the vicinity of Belfast Aldergrove, operating outside of Belfast Aldergrove CTR/Belfast TMA and monitoring Aldergrove Approach frequency (Refer to ENR 1.6, para 2.2.5)
7046 — 7047	Aldergrove Approach
* 7047	TC Thames (Biggin Hill Airport Conspicuity)
* 7047	RNAS Culdrose Conspicuity
7050 — 7056	TC Thames/TC Heathrow
* 7057	TC Thames (London City Airport Conspicuity)
* 7066	Lydd Approach VFR
* 7067	Teesside International Airport Conspicuity
* 7067	Lydd Approach IFR
7070 — 7076	TC Thames/TC Heathrow
* 7077	TC Thames (London Heliport Conspicuity)


* 7100	SSR Code Saturation
7101 — 7167	Transit (ORCAM) Brussels
7170 — 7177	Transit (ORCAM) Luxembourg


* 7200	RN Ships Conspicuity
7201 — 7267	Allocated to NATS as CCAMS redundancy
7270 — 7277	Assigned by CCAMS


* 7300	MPA/DEFRA/Fishery Protection/METMAN
* 7300	(Civil Contingency) Conspicuity
7301 — 7327	Assigned by CCAMS
7330 — 7347	Transit (ORCAM) Netherlands
* 7350	Norwich Frequency Monitoring Code – This code may be used when flying in the vicinity of Norwich, operating outside of Norwich CTR/Norwich CTA and monitoring Norwich Radar Frequency (Refer to ENR 1.6, paragraph 2.2.5)
7350 — 7353	RNAS Culdrose
7350 — 7361	MoD Ops in EGD701 (Hebrides)
7350 — 7363	Manchester Approach
7350 — 7376	Bournemouth Approach/LARS
7351 — 7377	Norwich Approach
* 7354 — *7355	RNAS Culdrose Conspicuity
* 7356	RNAS Culdrose Conspicuity Code utilised by Penzance Heliport iaw local orders
* 7357	RNAS Culdrose Conspicuity
7360 — 7367	RNAS Culdrose
* 7362	MoD Ops in EGD702 (Fort George)
* 7364	Manchester Special VFR Low-Level Route (Refer to ENR 1.6, paragraph 2.2.5)
* 7365	Manchester Barton Conspicuity
* 7366 (or 7367 for students flying solo)	This code may be used when flying in the vicinity of Manchester Airport and monitoring Manchester Radar frequency (Refer to ENR 1.6, paragraph 2.2.5)
7367 — 7373	Manchester Approach
* 7374	Dundee Airport IFR Procedural Approach
* 7375	Manchester TMA and Woodvale Local Area (Woodvale UAS and VGS Conspicuity)
* 7376	Dundee Airport VFR Conspicuity
* 7377	Bournemouth Radar Conspicuity


* 7400	UAS/RPA Lost Link (See note 12)
* 7401	Scottish FIS (Refer to ENR 1.6, paragraph 2.2.2.2)
* 7402	RAF Leuchars Conspicuity
7402 — 7414	TC Stansted/TC Luton
7402 — 7417	RAF Shawbury
7402 — 7436	RNAS Yeovilton
7402 — 7437	Anglia Radar
7403 — 7427	RAF Leuchars
* 7417	Cranfield Airport – IFR Conspicuity Purposes
* 7420	RAF Shawbury Conspicuity
7421 — 7425	RAF Shawbury
* 7426	RAF Shawbury Conspicuity
* 7427	RAF Shawbury
7430 — 7437	RAF Shawbury
* 7437	RNAS Yeovilton Conspicuity
7440 — 7477	Transit (ORCAM) France


* 7500	Special Purpose Code – Hi-Jacking
7501 — 7507	Assigned by CCAMS
7510 — 7535	Transit (ORCAM) Switzerland
7536 — 7537	Assigned by CCAMS
7540 — 7547	Transit (ORCAM) Germany
7550 — 7567	Transit (ORCAM) Paris
7570 — 7577	Assigned by CCAMS


* 7600	Special Purpose Code – Radio Failure
7601 — 7617	Allocated to NATS as CCAMS Redundancy (Prestwick Upper)
7620 — 7677	Assigned by CCAMS


* 7700	Special Purpose Code – Emergency
7701 — 7775	Assigned by CCAMS
* 7776 — 7777	SSR Monitors (Refer to ENR 1.6, paragraph 2.2.4)