Apparatus

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sensors Mode-S transponder

40688C

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
40688C
Octal
20064214
Decimal
4,221,068
Country
GB
Tail
G-XLEB
Type
A388
No current signal · last broadcast 5h ago
Flights observed
158
Distinct callsigns
16
Country
GB
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 40688C.

Country allocation

The ICAO 24-bit address 40688C 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
BAW5E British Airways 14 2026-04-24
BAW213 - 14 2026-07-12
BAW212 - 14 2026-07-12
BAW57K - 13 2026-07-13
BAW56 - 13 2026-07-10
BAW34N British Airways 13 2026-04-25
BAW2X - 13 2026-07-12
BAW5L - 12 2026-07-11
BAW7D British Airways 9 2026-06-24
BAW4E - 9 2026-06-25
BAW6R - 7 2026-07-05
BAW3G British Airways 7 2026-07-05
BAW193 - 6 2026-06-27
BAW8K - 5 2026-06-28
BAW55G British Airways 5 2026-06-25
BAW54 - 4 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BAW57K - Jul 13, 20:10 UTCJul 13, 22:35 UTC2h 25m
2026-07-12 BAW212 BOS → LHR Jul 12, 23:55 UTCJul 13, 05:55 UTC6h 0m
2026-07-12 BAW213 LHR → BOS Jul 12, 14:05 UTCJul 12, 21:00 UTC6h 55m
2026-07-12 BAW2X SFO → LHR Jul 12, 00:01 UTCJul 12, 09:25 UTC9h 25m
2026-07-11 BAW5L LHR → SFO Jul 11, 10:20 UTCJul 11, 21:00 UTC10h 40m
2026-07-10 BAW56 GCJ → LHR Jul 10, 17:45 UTCJul 11, 04:25 UTC10h 40m
2026-07-09 BAW57K - Jul 9, 20:55 UTCJul 10, 07:25 UTC10h 30m
2026-07-09 BAW2X SFO → LHR Jul 9, 00:05 UTCJul 9, 09:45 UTC9h 40m
2026-07-08 BAW5L - Jul 8, 10:30 UTCJul 8, 20:45 UTC10h 15m
2026-07-07 BAW212 BOS → LHR Jul 7, 23:50 UTCJul 8, 05:55 UTC6h 5m
2026-07-07 BAW213 LHR → BOS Jul 7, 14:15 UTCJul 7, 21:00 UTC6h 45m
2026-07-07 BAW212 - Jul 7, 00:05 UTCJul 7, 06:00 UTC5h 55m
2026-07-06 BAW213 LHR → BOS Jul 6, 14:00 UTCJul 6, 20:45 UTC6h 45m
2026-07-05 BAW6R - Jul 5, 21:40 UTCJul 6, 05:30 UTC7h 50m
2026-07-05 BAW3G LHR → BOS Jul 5, 09:30 UTCJul 5, 18:10 UTC8h 40m
2026-07-03 BAW212 BOS → LHR Jul 3, 00:45 UTCJul 3, 06:55 UTC6h 10m
2026-07-02 BAW213 LHR → BOS Jul 2, 14:00 UTCJul 2, 21:00 UTC7h 0m
2026-07-01 BAW2X - Jul 1, 23:55 UTCJul 2, 09:30 UTC9h 35m
2026-07-01 BAW5L LHR → SFO Jul 1, 10:25 UTCJul 1, 20:25 UTC10h 0m
2026-06-30 BAW6R - Jun 30, 21:25 UTCJul 1, 05:30 UTC8h 5m
2026-06-30 BAW3G LHR → BOS Jun 30, 09:25 UTCJun 30, 18:20 UTC8h 55m
2026-06-29 BAW56 JNB → LHR Jun 29, 18:44 UTCJun 30, 04:50 UTC10h 6m
2026-06-28 BAW57K LHR → JNB Jun 28, 21:34 UTCJun 29, 07:50 UTC10h 15m
2026-06-28 BAW8K DFW → LHR Jun 28, 01:40 UTCJun 28, 09:55 UTC8h 15m
2026-06-27 BAW193 - Jun 27, 12:50 UTCJun 27, 21:55 UTC9h 5m
2026-06-26 BAW54 - Jun 26, 19:35 UTCJun 27, 06:15 UTC10h 40m
2026-06-25 BAW55G LHR → JNB Jun 25, 18:34 UTCJun 26, 04:55 UTC10h 20m
2026-06-25 BAW4E - Jun 25, 04:40 UTCJun 25, 14:24 UTC9h 45m
2026-06-24 BAW7D EWR → LHR Jun 24, 15:29 UTCJun 25, 01:50 UTC10h 20m
2026-06-24 BAW2X - Jun 24, 08:09 UTCJun 24, 09:29 UTC1h 20m
2026-06-23 BAW2X - Jun 23, 23:50 UTCJun 24, 04:44 UTC4h 55m
2026-06-23 BAW5L LHR → SFO Jun 23, 10:29 UTCJun 23, 20:49 UTC10h 20m
2026-06-22 BAW56 JNB → LHR Jun 22, 18:00 UTCJun 23, 04:19 UTC10h 20m
2026-06-21 BAW55G LHR → JNB Jun 21, 18:39 UTCJun 22, 04:54 UTC10h 15m
2026-06-20 BAW2X SFO → LHR Jun 20, 23:59 UTCJun 21, 09:44 UTC9h 45m
2026-06-20 BAW5L LHR → SFO Jun 20, 10:20 UTCJun 20, 20:34 UTC10h 15m
2026-06-19 BAW56 JNB → LHR Jun 19, 17:44 UTCJun 20, 04:20 UTC10h 35m
2026-06-18 BAW57K LHR → JNB Jun 18, 20:50 UTCJun 19, 07:14 UTC10h 24m
2026-06-17 BAW4E - Jun 17, 04:40 UTCJun 17, 14:40 UTC10h 0m
2026-06-16 BAW7D EWR → LHR Jun 16, 14:35 UTCJun 17, 00:45 UTC10h 11m
2026-06-16 BAW212 BOS → LHR Jun 16, 00:50 UTCJun 16, 06:40 UTC5h 50m
2026-06-15 BAW213 LHR → BOS Jun 15, 13:54 UTCJun 15, 20:59 UTC7h 5m
2026-06-15 BAW8K - Jun 15, 00:55 UTCJun 15, 09:35 UTC8h 40m
2026-06-14 BAW193 - Jun 14, 12:40 UTCJun 14, 21:55 UTC9h 15m
2026-06-14 BAW212 BOS → LHR Jun 14, 00:00 UTCJun 14, 06:00 UTC6h 1m
2026-06-13 BAW213 LHR → BOS Jun 13, 13:55 UTCJun 13, 20:35 UTC6h 40m
2026-06-13 BAW212 - Jun 13, 00:10 UTCJun 13, 06:05 UTC5h 54m
2026-06-12 BAW213 LHR → BOS Jun 12, 14:01 UTCJun 12, 20:40 UTC6h 40m
2026-06-12 BAW2X SFO → LHR Jun 12, 00:05 UTCJun 12, 09:50 UTC9h 46m
2026-06-11 BAW5L LHR → SFO Jun 11, 10:45 UTCJun 11, 20:55 UTC10h 10m

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

Mode-S 40688C frequently asked

What is Mode-S code 40688C?
40688C is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-XLEB.
Where is Mode-S 40688C registered?
Mode-S code 40688C 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 40688C broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40688C, octal 20064214, decimal 4,221,068.
What flights does 40688C operate?
Mode-S 40688C has broadcast 16 distinct callsigns, including BAW5E, BAW213, BAW212, BAW57K, BAW56.