Apparatus

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sensors Mode-S transponder

406B5C

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-GATM · AIRBUS A-320

Hex
406B5C
Octal
20065534
Decimal
4,221,788
Country
GB
Tail
G-GATM
Type
A320
No current signal · last broadcast Jul 26, 19:55 UTC
Flights observed
311
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 19:55 UTC

Last known position

Most recent position reported by Mode-S 406B5C.

Country allocation

The ICAO 24-bit address 406B5C falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
EFW7SN BA Euroflyer 10 2026-07-23
EFW39FL - 10 2026-07-23
EFW6DG BA Euroflyer 8 2026-07-18
EFW69BK - 8 2026-07-22
EFW50Z BA Euroflyer 8 2026-07-20
EFW24AD - 8 2026-07-18
EFW741W - 7 2026-07-20
EFW67A BA Euroflyer 7 2026-07-21
EFW53CV BA Euroflyer 6 2026-07-26
EFW29CF BA Euroflyer 6 2026-07-26
EFW983X BA Euroflyer 5 2026-04-30
EFW91P - 5 2026-07-09
EFW83SY - 5 2026-07-19
EFW81PT BA Euroflyer 5 2026-05-03
EFW79YW BA Euroflyer 5 2026-06-14
EFW76D - 5 2026-07-09
EFW62ME BA Euroflyer 5 2026-06-14
EFW527R BA Euroflyer 5 2026-07-25
EFW33VR BA Euroflyer 5 2026-05-03
EFW147P - 5 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW2816 LGW → ALG Jul 26, 18:05 UTCJul 26, 19:55 UTC1h 50m
2026-07-26 EFW53CV TFS → LGW Jul 26, 11:45 UTCJul 26, 15:25 UTC3h 40m
2026-07-26 EFW29CF LGW → TFS Jul 26, 06:25 UTCJul 26, 10:00 UTC3h 36m
2026-07-25 EFW19YZ BOD → LGW Jul 25, 20:25 UTCJul 25, 21:40 UTC1h 15m
2026-07-25 EFW45L LGW → BOD Jul 25, 18:10 UTCJul 25, 19:15 UTC1h 5m
2026-07-25 EFW6KJ FNC → LGW Jul 25, 12:20 UTCJul 25, 15:55 UTC3h 35m
2026-07-25 EFW527R LGW → FNC Jul 25, 10:35 UTCJul 25, 10:40 UTC5m
2026-07-25 EFW527R LGW → FNC Jul 25, 07:35 UTCJul 25, 09:55 UTC2h 20m
2026-07-24 EFW193M CTA → LGW Jul 24, 17:05 UTCJul 24, 19:45 UTC2h 40m
2026-07-24 EFW73AW LGW → CTA Jul 24, 12:50 UTCJul 24, 15:20 UTC2h 30m
2026-07-24 EFW29BA MAH → LGW Jul 24, 09:25 UTCJul 24, 11:15 UTC1h 50m
2026-07-24 EFW39VE LGW → MAH Jul 24, 06:20 UTCJul 24, 08:15 UTC1h 55m
2026-07-23 EFW7SN PFO → LGW Jul 23, 18:10 UTCJul 23, 22:30 UTC4h 20m
2026-07-23 EFW39FL - Jul 23, 12:50 UTCJul 23, 16:40 UTC3h 50m
2026-07-23 EFW5SL OPO → LGW Jul 23, 09:05 UTCJul 23, 10:55 UTC1h 50m
2026-07-23 EFW461M LGW → OPO Jul 23, 05:40 UTCJul 23, 07:35 UTC1h 55m
2026-07-22 EFW5BR JER → LGW Jul 22, 19:45 UTCJul 22, 20:15 UTC30m
2026-07-22 EFW56R LGW → JER Jul 22, 18:05 UTCJul 22, 18:40 UTC35m
2026-07-22 EFW69BK - Jul 22, 11:35 UTCJul 22, 15:55 UTC4h 20m
2026-07-21 EFW69BK - Jul 21, 13:05 UTCJul 21, 17:25 UTC4h 20m
2026-07-21 EFW67A LGW → AYT Jul 21, 08:00 UTCJul 21, 11:40 UTC3h 40m
2026-07-20 BAW2817 LHR → MAH Jul 20, 21:30 UTCJul 20, 23:50 UTC2h 20m
2026-07-20 BAW2816 LGW → ALG Jul 20, 17:30 UTCJul 20, 19:40 UTC2h 10m
2026-07-20 EFW50Z HER → LGW Jul 20, 16:15 UTCJul 20, 17:10 UTC55m
2026-07-20 EFW50Z HER → LGW Jul 20, 11:55 UTCJul 20, 15:45 UTC3h 50m
2026-07-20 EFW741W - Jul 20, 07:10 UTCJul 20, 10:20 UTC3h 10m
2026-07-19 EFW83SY RHO → LGW Jul 19, 19:20 UTCJul 19, 23:15 UTC3h 55m
2026-07-19 EFW147P LGW → RHO Jul 19, 14:35 UTCJul 19, 17:55 UTC3h 20m
2026-07-19 EFW75J DBV → LGW Jul 19, 09:05 UTCJul 19, 11:45 UTC2h 40m
2026-07-19 EFW34BY LGW → DBV Jul 19, 05:45 UTCJul 19, 07:50 UTC2h 5m
2026-07-18 EFW6DG LCA → LGW Jul 18, 15:20 UTCJul 18, 19:55 UTC4h 35m
2026-07-18 EFW24AD LGW → LCA Jul 18, 10:00 UTCJul 18, 14:05 UTC4h 5m
2026-07-17 EFW8RA VRN → LGW Jul 17, 21:05 UTCJul 17, 23:00 UTC1h 55m
2026-07-17 EFW657G - Jul 17, 17:35 UTCJul 17, 19:05 UTC1h 30m
2026-07-17 EFW74V KGS → LGW Jul 17, 11:45 UTCJul 17, 15:35 UTC3h 50m
2026-07-17 EFW81W LGW → KGS Jul 17, 06:05 UTCJul 17, 09:25 UTC3h 20m
2026-07-16 EFW83SY RHO → LGW Jul 16, 17:05 UTCJul 16, 20:55 UTC3h 50m
2026-07-16 EFW147P LGW → RHO Jul 16, 11:45 UTCJul 16, 15:05 UTC3h 20m
2026-07-16 EFW5JM JER → LGW Jul 16, 09:20 UTCJul 16, 09:55 UTC35m
2026-07-16 EFW9SA LGW → JER Jul 16, 07:40 UTCJul 16, 08:20 UTC40m
2026-07-15 EFW42YR IBZ → LGW Jul 15, 19:20 UTCJul 15, 21:15 UTC1h 55m
2026-07-15 EFW15AV LGW → IBZ Jul 15, 15:50 UTCJul 15, 17:50 UTC2h 0m
2026-07-14 EFW58W BOD → LGW Jul 14, 10:30 UTCJul 14, 11:50 UTC1h 20m
2026-07-14 EFW33LD LGW → BOD Jul 14, 08:20 UTCJul 14, 09:30 UTC1h 10m
2026-07-13 EFW5BR JER → LGW Jul 13, 19:15 UTCJul 13, 19:55 UTC40m
2026-07-13 EFW56R LGW → JER Jul 13, 17:30 UTCJul 13, 18:10 UTC40m
2026-07-13 EFW50Z - Jul 13, 11:35 UTCJul 13, 15:40 UTC4h 5m
2026-07-13 EFW741W - Jul 13, 06:35 UTCJul 13, 09:40 UTC3h 5m
2026-07-12 EFW7JD - Jul 12, 19:35 UTCJul 12, 21:30 UTC1h 55m
2026-07-12 EFW7EL - Jul 12, 16:25 UTCJul 12, 18:20 UTC1h 55m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the G-GATM page for operator, model, and routing details .

Mode-S 406B5C frequently asked

What is Mode-S code 406B5C?
406B5C is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-GATM.
Where is Mode-S 406B5C registered?
Mode-S code 406B5C is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 406B5C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406B5C, octal 20065534, decimal 4,221,788.
What flights does 406B5C operate?
Mode-S 406B5C has broadcast 20 distinct callsigns, including EFW7SN, EFW39FL, EFW6DG, EFW69BK, EFW50Z.