Apparatus

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sensors Mode-S transponder

406EC9

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-XLEK · AIRBUS A-380-800

Hex
406EC9
Octal
20067311
Decimal
4,222,665
Country
GB
Tail
G-XLEK
Type
A388
No current signal · last broadcast 1d ago
Flights observed
92
Distinct callsigns
14
Country
GB
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 406EC9.

Country allocation

The ICAO 24-bit address 406EC9 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 14 distinct

Callsign Airline Flights Last seen
BAW54 British Airways 10 2026-05-26
BAW4E British Airways 10 2026-05-15
BAW7D British Airways 8 2026-05-14
BAW213 British Airways 8 2026-05-28
BAW5L British Airways 7 2026-05-27
BAW55G British Airways 7 2026-05-25
BAW2X British Airways 7 2026-05-28
BAW212 British Airways 7 2026-05-12
BAW57K British Airways 6 2026-05-15
BAW56 British Airways 6 2026-05-16
BAW6R British Airways 5 2026-05-21
BAW3G British Airways 5 2026-05-21
BAW193 British Airways 4 2026-05-25
BAW8K British Airways 2 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 BAW213 LHR → BOS May 28, 14:10 UTCMay 28, 20:35 UTC6h 25m
2026-05-28 BAW2X SFO → LHR May 28, 00:10 UTCMay 28, 09:55 UTC9h 45m
2026-05-27 BAW5L LHR → SFO May 27, 11:15 UTCMay 27, 21:35 UTC10h 20m
2026-05-26 BAW54 JNB → LHR May 26, 19:40 UTCMay 27, 06:20 UTC10h 40m
2026-05-25 BAW55G LHR → JNB May 25, 19:20 UTCMay 26, 05:40 UTC10h 20m
2026-05-25 BAW8K DFW → LHR May 25, 06:30 UTCMay 25, 14:50 UTC8h 20m
2026-05-25 BAW193 LHR → DFW May 25, 01:55 UTCMay 25, 02:20 UTC25m
2026-05-24 BAW193 LHR → DFW May 24, 23:00 UTCMay 24, 23:20 UTC20m
2026-05-24 BAW193 LHR → DFW May 24, 12:45 UTCMay 24, 21:45 UTC9h 0m
2026-05-23 BAW8K DFW → LHR May 23, 03:30 UTCMay 23, 11:35 UTC8h 5m
2026-05-22 BAW193 LHR → DFW May 22, 15:00 UTCMay 23, 00:10 UTC9h 10m
2026-05-21 BAW6R MIA → LHR May 21, 21:40 UTCMay 22, 05:35 UTC7h 55m
2026-05-21 BAW3G LHR → BOS May 21, 10:15 UTCMay 21, 18:55 UTC8h 40m
2026-05-20 BAW54 JNB → LHR May 20, 19:30 UTCMay 21, 06:20 UTC10h 50m
2026-05-19 BAW55G LHR → JNB May 19, 18:30 UTCMay 20, 04:35 UTC10h 5m
2026-05-19 BAW2X SFO → LHR May 19, 00:00 UTCMay 19, 09:50 UTC9h 50m
2026-05-18 BAW5L LHR → SFO May 18, 10:25 UTCMay 18, 20:30 UTC10h 4m
2026-05-17 BAW6R MIA → LHR May 17, 21:10 UTCMay 18, 05:05 UTC7h 55m
2026-05-17 BAW3G LHR → BOS May 17, 09:30 UTCMay 17, 18:30 UTC9h 0m
2026-05-16 BAW56 JNB → LHR May 16, 17:50 UTCMay 17, 04:15 UTC10h 25m
2026-05-15 BAW57K LHR → JNB May 15, 21:25 UTCMay 16, 07:31 UTC10h 6m
2026-05-15 BAW4E LAX → LHR May 15, 04:00 UTCMay 15, 13:50 UTC9h 50m
2026-05-14 BAW7D EWR → LHR May 14, 14:40 UTCMay 15, 01:15 UTC10h 35m
2026-05-14 BAW2X SFO → LHR May 14, 00:25 UTCMay 14, 09:40 UTC9h 15m
2026-05-13 BAW5L LHR → SFO May 13, 11:05 UTCMay 13, 21:40 UTC10h 35m
2026-05-12 BAW212 BOS → LHR May 12, 23:40 UTCMay 13, 05:45 UTC6h 5m
2026-05-12 BAW213 LHR → BOS May 12, 13:45 UTCMay 12, 20:55 UTC7h 10m
2026-05-12 BAW212 BOS → LHR May 12, 04:50 UTCMay 12, 06:05 UTC1h 15m
2026-05-11 BAW213 LHR → BOS May 11, 13:55 UTCMay 11, 20:40 UTC6h 46m
2026-05-11 BAW212 BOS → LHR May 11, 00:00 UTCMay 11, 05:55 UTC5h 55m
2026-05-10 BAW213 LHR → BOS May 10, 14:00 UTCMay 10, 20:35 UTC6h 35m
2026-05-10 BAW2X SFO → LHR May 10, 00:15 UTCMay 10, 10:00 UTC9h 45m
2026-05-09 BAW5L LHR → SFO May 9, 10:05 UTCMay 9, 20:20 UTC10h 15m
2026-05-08 BAW6R MIA → LHR May 8, 21:15 UTCMay 9, 05:20 UTC8h 5m
2026-05-08 BAW3G LHR → BOS May 8, 09:19 UTCMay 8, 18:15 UTC8h 55m
2026-05-07 BAW56 JNB → LHR May 7, 17:40 UTCMay 8, 04:25 UTC10h 45m
2026-05-06 BAW57K LHR → JNB May 6, 21:00 UTCMay 7, 07:00 UTC10h 0m
2026-05-06 BAW4E LAX → LHR May 6, 04:10 UTCMay 6, 13:55 UTC9h 45m
2026-05-05 BAW7D EWR → LHR May 5, 14:40 UTCMay 6, 00:50 UTC10h 10m
2026-05-05 BAW2X SFO → LHR May 5, 00:00 UTCMay 5, 09:55 UTC9h 55m
2026-05-04 BAW5L LHR → SFO May 4, 10:55 UTCMay 4, 21:25 UTC10h 31m
2026-05-03 BAW54 JNB → LHR May 3, 19:34 UTCMay 4, 06:15 UTC10h 40m
2026-05-02 BAW57K LHR → JNB May 2, 20:55 UTCMay 3, 07:20 UTC10h 24m
2026-05-01 BAW54 JNB → LHR May 1, 19:45 UTCMay 2, 06:35 UTC10h 50m
2026-04-30 BAW55G LHR → JNB Apr 30, 18:45 UTCMay 1, 04:55 UTC10h 10m
2026-04-29 BAW6R MIA → LHR Apr 29, 22:05 UTCApr 30, 06:30 UTC8h 24m
2026-04-29 BAW3G LHR → BOS Apr 29, 09:35 UTCApr 29, 18:25 UTC8h 50m
2026-04-28 BAW212 BOS → LHR Apr 28, 23:50 UTCApr 29, 06:10 UTC6h 20m
2026-04-28 BAW213 LHR → BOS Apr 28, 14:00 UTCApr 28, 20:25 UTC6h 25m
2026-04-27 BAW6R MIA → LHR Apr 27, 21:25 UTCApr 28, 05:30 UTC8h 5m

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-XLEK page for operator, model, and routing details .

Mode-S 406EC9 frequently asked

What is Mode-S code 406EC9?
406EC9 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-XLEK.
Where is Mode-S 406EC9 registered?
Mode-S code 406EC9 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 406EC9 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406EC9, octal 20067311, decimal 4,222,665.
What flights does 406EC9 operate?
Mode-S 406EC9 has broadcast 14 distinct callsigns, including BAW54, BAW4E, BAW7D, BAW213, BAW5L.