Apparatus

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sensors Mode-S transponder

406A04

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406A04
Octal
20065004
Decimal
4,221,444
Country
GB
Tail
G-XLEE
Type
A388
No current signal · last broadcast Jul 24, 14:00 UTC
Flights observed
173
Distinct callsigns
17
Country
GB
Last broadcast
Jul 24, 14:00 UTC

Last known position

Most recent position reported by Mode-S 406A04.

Country allocation

The ICAO 24-bit address 406A04 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 17 distinct

Callsign Airline Flights Last seen
BAW7D British Airways 17 2026-07-23
BAW5L - 16 2026-07-16
BAW4E British Airways 16 2026-07-24
BAW2X - 16 2026-07-17
BAW56 - 13 2026-07-18
BAW6R British Airways 12 2026-07-19
BAW57K - 12 2026-07-17
BAW3G - 12 2026-07-19
BAW213 - 12 2026-07-21
BAW212 British Airways 12 2026-07-22
BAW54 - 9 2026-07-15
BAW55G - 8 2026-07-14
BAW193 British Airways 8 2026-07-22
BAW8K British Airways 7 2026-07-23
BAW9605 - 1 2026-06-17
BAW5E British Airways 1 2026-04-25
BAW34N British Airways 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 BAW4E LAX → LHR Jul 24, 04:10 UTCJul 24, 14:00 UTC9h 50m
2026-07-23 BAW7D EWR → LHR Jul 23, 14:55 UTCJul 24, 01:35 UTC10h 40m
2026-07-23 BAW8K DFW → LHR Jul 23, 01:10 UTCJul 23, 09:45 UTC8h 35m
2026-07-22 BAW193 LHR → DFW Jul 22, 13:00 UTCJul 22, 22:15 UTC9h 15m
2026-07-22 BAW212 BOS → LHR Jul 22, 01:50 UTCJul 22, 02:55 UTC1h 5m
2026-07-21 BAW213 - Jul 21, 16:15 UTCJul 21, 23:05 UTC6h 50m
2026-07-21 BAW8K DFW → LHR Jul 21, 01:10 UTCJul 21, 09:50 UTC8h 40m
2026-07-20 BAW193 LHR → DFW Jul 20, 12:35 UTCJul 20, 21:40 UTC9h 5m
2026-07-19 BAW6R MIA → LHR Jul 19, 21:45 UTCJul 20, 06:05 UTC8h 20m
2026-07-19 BAW3G - Jul 19, 09:35 UTCJul 19, 18:10 UTC8h 35m
2026-07-18 BAW56 - Jul 18, 17:50 UTCJul 19, 04:30 UTC10h 40m
2026-07-17 BAW57K - Jul 17, 21:34 UTCJul 18, 07:45 UTC10h 11m
2026-07-17 BAW2X - Jul 17, 00:20 UTCJul 17, 09:50 UTC9h 30m
2026-07-16 BAW5L - Jul 16, 10:29 UTCJul 16, 21:05 UTC10h 35m
2026-07-15 BAW54 - Jul 15, 20:25 UTCJul 16, 07:20 UTC10h 55m
2026-07-14 BAW55G - Jul 14, 18:30 UTCJul 15, 04:30 UTC9h 59m
2026-07-14 BAW4E - Jul 14, 04:35 UTCJul 14, 14:25 UTC9h 50m
2026-07-13 BAW7D - Jul 13, 21:05 UTCJul 14, 02:10 UTC5h 5m
2026-07-13 BAW7D - Jul 13, 15:20 UTCJul 13, 21:00 UTC5h 40m
2026-07-13 BAW2X SFO → LHR Jul 13, 00:01 UTCJul 13, 09:35 UTC9h 35m
2026-07-12 BAW5L LHR → SFO Jul 12, 10:30 UTCJul 12, 21:00 UTC10h 30m
2026-07-12 BAW212 BOS → LHR Jul 12, 00:01 UTCJul 12, 05:50 UTC5h 50m
2026-07-11 BAW213 - Jul 11, 14:05 UTCJul 11, 20:40 UTC6h 35m
2026-07-11 BAW212 BOS → LHR Jul 11, 00:30 UTCJul 11, 06:35 UTC6h 5m
2026-07-10 BAW213 LHR → BOS Jul 10, 14:40 UTCJul 10, 21:30 UTC6h 50m
2026-07-10 BAW8K DFW → LHR Jul 10, 01:10 UTCJul 10, 09:35 UTC8h 25m
2026-07-09 BAW193 - Jul 9, 12:35 UTCJul 9, 21:55 UTC9h 20m
2026-07-08 BAW6R - Jul 8, 21:25 UTCJul 9, 05:30 UTC8h 5m
2026-07-08 BAW3G LHR → BOS Jul 8, 10:15 UTCJul 8, 18:55 UTC8h 40m
2026-07-07 BAW6R - Jul 7, 21:30 UTCJul 8, 05:35 UTC8h 5m
2026-07-07 BAW3G LHR → BOS Jul 7, 09:30 UTCJul 7, 18:20 UTC8h 50m
2026-07-06 BAW6R - Jul 6, 21:35 UTCJul 7, 05:50 UTC8h 15m
2026-07-06 BAW3G LHR → BOS Jul 6, 09:15 UTCJul 6, 17:40 UTC8h 25m
2026-07-05 BAW56 JNB → LHR Jul 5, 17:45 UTCJul 6, 04:05 UTC10h 20m
2026-07-04 BAW55G LHR → JNB Jul 4, 19:25 UTCJul 5, 05:25 UTC10h 0m
2026-07-03 BAW4E - Jul 3, 04:15 UTCJul 3, 13:50 UTC9h 35m
2026-07-02 BAW7D EWR → LHR Jul 2, 14:35 UTCJul 3, 01:00 UTC10h 25m
2026-07-01 BAW56 JNB → LHR Jul 1, 17:50 UTCJul 2, 04:20 UTC10h 30m
2026-06-30 BAW57K LHR → JNB Jun 30, 20:55 UTCJul 1, 07:25 UTC10h 30m
2026-06-30 BAW8K DFW → LHR Jun 30, 00:49 UTCJun 30, 09:25 UTC8h 35m
2026-06-29 BAW193 - Jun 29, 12:39 UTCJun 29, 22:05 UTC9h 25m
2026-06-28 BAW54 - Jun 28, 19:40 UTCJun 29, 06:14 UTC10h 35m
2026-06-27 BAW57K LHR → JNB Jun 27, 21:19 UTCJun 28, 07:34 UTC10h 15m
2026-06-27 BAW2X - Jun 27, 12:04 UTCJun 27, 12:34 UTC30m
2026-06-26 BAW2X SFO → BHX Jun 26, 23:49 UTCJun 27, 09:44 UTC9h 55m
2026-06-26 BAW5L LHR → SFO Jun 26, 10:10 UTCJun 26, 20:29 UTC10h 20m
2026-06-25 BAW56 JNB → LHR Jun 25, 17:49 UTCJun 26, 04:20 UTC10h 30m
2026-06-24 BAW57K LHR → JNB Jun 24, 21:34 UTCJun 25, 07:45 UTC10h 10m
2026-06-24 BAW4E - Jun 24, 04:34 UTCJun 24, 14:29 UTC9h 55m
2026-06-23 BAW7D EWR → LHR Jun 23, 14:35 UTCJun 24, 01:09 UTC10h 35m

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

Mode-S 406A04 frequently asked

What is Mode-S code 406A04?
406A04 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-XLEE.
Where is Mode-S 406A04 registered?
Mode-S code 406A04 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 406A04 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 14:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406A04, octal 20065004, decimal 4,221,444.
What flights does 406A04 operate?
Mode-S 406A04 has broadcast 17 distinct callsigns, including BAW7D, BAW5L, BAW4E, BAW2X, BAW56.