Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 2h ago
Flights observed
88
Distinct callsigns
16
Country
GB
Last broadcast
2h ago

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 16 distinct

Callsign Airline Flights Last seen
BAW5L British Airways 11 2026-05-17
BAW2X British Airways 10 2026-05-18
BAW7D British Airways 9 2026-05-29
BAW56 British Airways 8 2026-05-26
BAW4E British Airways 8 2026-05-25
BAW57K British Airways 7 2026-05-25
BAW6R British Airways 6 2026-05-27
BAW3G British Airways 6 2026-05-27
BAW213 British Airways 6 2026-05-18
BAW212 British Airways 6 2026-05-19
BAW54 British Airways 4 2026-04-18
BAW55G British Airways 3 2026-04-17
BAW8K British Airways 1 2026-05-29
BAW5E British Airways 1 2026-04-25
BAW34N British Airways 1 2026-04-26
BAW193 British Airways 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW7D EWR → LHR May 29, 15:55 UTCMay 30, 02:15 UTC10h 20m
2026-05-29 BAW8K DFW → LHR May 29, 01:15 UTCMay 29, 10:15 UTC9h 0m
2026-05-28 BAW193 LHR → DFW May 28, 12:30 UTCMay 28, 21:30 UTC9h 0m
2026-05-27 BAW6R MIA → LHR May 27, 21:15 UTCMay 28, 05:15 UTC8h 0m
2026-05-27 BAW3G LHR → BOS May 27, 09:30 UTCMay 27, 18:15 UTC8h 45m
2026-05-26 BAW56 JNB → LHR May 26, 17:44 UTCMay 27, 04:14 UTC10h 30m
2026-05-25 BAW57K LHR → JNB May 25, 20:40 UTCMay 26, 06:59 UTC10h 20m
2026-05-25 BAW4E LAX → LHR May 25, 04:00 UTCMay 25, 14:00 UTC10h 0m
2026-05-24 BAW7D EWR → LHR May 24, 14:35 UTCMay 24, 23:46 UTC9h 11m
2026-05-23 BAW6R MIA → LHR May 23, 21:20 UTCMay 24, 05:20 UTC8h 0m
2026-05-23 BAW3G LHR → BOS May 23, 09:35 UTCMay 23, 18:25 UTC8h 50m
2026-05-21 BAW56 JNB → LHR May 21, 17:55 UTCMay 22, 04:30 UTC10h 35m
2026-05-20 BAW57K LHR → JNB May 20, 20:55 UTCMay 21, 07:05 UTC10h 10m
2026-05-19 BAW6R MIA → LHR May 19, 21:50 UTCMay 20, 05:50 UTC8h 1m
2026-05-19 BAW3G LHR → BOS May 19, 09:35 UTCMay 19, 18:15 UTC8h 40m
2026-05-19 BAW212 BOS → LHR May 19, 00:05 UTCMay 19, 06:00 UTC5h 55m
2026-05-18 BAW213 LHR → BOS May 18, 14:20 UTCMay 18, 20:45 UTC6h 24m
2026-05-18 BAW2X SFO → LHR May 18, 00:25 UTCMay 18, 10:00 UTC9h 35m
2026-05-17 BAW5L LHR → SFO May 17, 11:01 UTCMay 17, 20:50 UTC9h 50m
2026-05-16 BAW212 BOS → LHR May 16, 23:50 UTCMay 17, 05:45 UTC5h 55m
2026-05-16 BAW213 LHR → BOS May 16, 14:20 UTCMay 16, 20:55 UTC6h 35m
2026-05-15 BAW56 JNB → LHR May 15, 18:00 UTCMay 16, 04:20 UTC10h 20m
2026-05-14 BAW57K LHR → JNB May 14, 21:55 UTCMay 15, 08:05 UTC10h 10m
2026-05-14 BAW4E LAX → LHR May 14, 05:20 UTCMay 14, 14:55 UTC9h 35m
2026-05-13 BAW7D EWR → LHR May 13, 15:55 UTCMay 14, 02:45 UTC10h 50m
2026-05-12 BAW6R MIA → LHR May 12, 21:25 UTCMay 13, 05:20 UTC7h 55m
2026-05-12 BAW3G LHR → BOS May 12, 09:25 UTCMay 12, 18:30 UTC9h 5m
2026-05-11 BAW56 JNB → LHR May 11, 18:00 UTCMay 12, 04:40 UTC10h 40m
2026-05-10 BAW57K LHR → JNB May 10, 20:50 UTCMay 11, 07:05 UTC10h 15m
2026-05-10 BAW4E LAX → LHR May 10, 04:09 UTCMay 10, 14:20 UTC10h 10m
2026-05-09 BAW7D EWR → LHR May 9, 14:35 UTCMay 10, 00:55 UTC10h 20m
2026-05-07 BAW4E LAX → LHR May 7, 04:10 UTCMay 7, 14:05 UTC9h 55m
2026-05-06 BAW7D EWR → LHR May 6, 14:35 UTCMay 7, 00:45 UTC10h 9m
2026-05-06 BAW2X SFO → LHR May 6, 00:01 UTCMay 6, 10:10 UTC10h 10m
2026-05-05 BAW5L LHR → SFO May 5, 10:20 UTCMay 5, 20:30 UTC10h 10m
2026-05-04 BAW212 BOS → LHR May 4, 23:50 UTCMay 5, 05:50 UTC6h 0m
2026-05-04 BAW213 LHR → BOS May 4, 14:35 UTCMay 4, 20:55 UTC6h 21m
2026-05-04 BAW2X SFO → LHR May 4, 00:00 UTCMay 4, 10:00 UTC10h 0m
2026-05-03 BAW5L LHR → SFO May 3, 10:30 UTCMay 3, 20:49 UTC10h 20m
2026-05-02 BAW4E LAX → LHR May 2, 04:35 UTCMay 2, 14:35 UTC10h 0m
2026-05-01 BAW7D EWR → LHR May 1, 15:25 UTCMay 2, 01:55 UTC10h 30m
2026-05-01 BAW2X SFO → LHR May 1, 00:00 UTCMay 1, 10:00 UTC10h 0m
2026-04-30 BAW5L LHR → SFO Apr 30, 10:10 UTCApr 30, 20:25 UTC10h 15m
2026-04-29 BAW212 BOS → LHR Apr 29, 23:45 UTCApr 30, 05:50 UTC6h 5m
2026-04-29 BAW213 LHR → BOS Apr 29, 14:10 UTCApr 29, 20:25 UTC6h 15m
2026-04-29 BAW6R MIA → LHR Apr 29, 01:35 UTCApr 29, 10:00 UTC8h 26m
2026-04-28 BAW3G LHR → BOS Apr 28, 13:55 UTCApr 28, 22:25 UTC8h 30m
2026-04-27 BAW56 JNB → LHR Apr 27, 19:10 UTCApr 28, 05:40 UTC10h 30m
2026-04-26 BAW57K LHR → JNB Apr 26, 20:35 UTCApr 27, 07:10 UTC10h 35m
2026-04-26 BAW34N MIA → LHR Apr 26, 03:00 UTCApr 26, 11:00 UTC8h 0m

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 2h ago.
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 16 distinct callsigns, including BAW5L, BAW2X, BAW7D, BAW56, BAW4E.