Apparatus

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sensors Mode-S transponder

40688E

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-ZBJA · BOEING 787-8 Dreamliner

Hex
40688E
Octal
20064216
Decimal
4,221,070
Country
GB
Tail
G-ZBJA
Type
B788
No current signal · last broadcast 1h ago
Flights observed
167
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 40688E.

Country allocation

The ICAO 24-bit address 40688E 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
BAW36 - 19 2026-06-21
BAW136 British Airways 11 2026-06-01
BAW199 - 9 2026-06-30
BAW276 British Airways 7 2026-05-26
BAW135 - 7 2026-06-19
BAW9EW - 6 2026-07-05
BAW6NC - 6 2026-07-04
BAW35 - 6 2026-06-20
BAW198 - 6 2026-07-01
BAW137 British Airways 6 2026-05-31
BAW70Q British Airways 5 2026-05-30
BAW257 - 5 2026-07-07
BAW256 - 5 2026-07-08
BAW221 - 5 2026-07-14
BAW220 - 5 2026-07-15
BAW171 British Airways 5 2026-05-29
BAW138 - 5 2026-07-02
BAW134 - 5 2026-06-19
BAW119 - 5 2026-07-10
BAW118 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 BAW220 - Jul 15, 02:30 UTCJul 15, 05:15 UTC2h 45m
2026-07-14 BAW221 - Jul 14, 15:55 UTCJul 15, 00:05 UTC8h 9m
2026-07-14 BAW98T - Jul 14, 04:10 UTCJul 14, 09:20 UTC5h 10m
2026-07-14 BAW98T - Jul 14, 02:30 UTCJul 14, 04:05 UTC1h 35m
2026-07-13 BAW99 LHR → YYZ Jul 13, 17:15 UTCJul 14, 00:10 UTC6h 55m
2026-07-13 BAW220 STL → LHR Jul 13, 03:30 UTCJul 13, 11:15 UTC7h 45m
2026-07-12 BAW221 - Jul 12, 16:50 UTCJul 13, 01:01 UTC8h 10m
2026-07-12 BAW224U MSY → LHR Jul 12, 03:20 UTCJul 12, 11:25 UTC8h 5m
2026-07-11 BAW225Y - Jul 11, 16:10 UTCJul 12, 01:20 UTC9h 10m
2026-07-11 BAW118 - Jul 11, 01:35 UTCJul 11, 11:30 UTC9h 55m
2026-07-10 BAW119 - Jul 10, 13:20 UTCJul 10, 22:25 UTC9h 5m
2026-07-09 BAW130 - Jul 9, 22:05 UTCJul 10, 08:20 UTC10h 15m
2026-07-09 BAW131 - Jul 9, 18:55 UTCJul 9, 19:05 UTC10m
2026-07-09 BAW131 - Jul 9, 09:30 UTCJul 9, 17:30 UTC8h 0m
2026-07-08 BAW256 - Jul 8, 05:05 UTCJul 8, 13:50 UTC8h 45m
2026-07-07 BAW257 - Jul 7, 19:20 UTCJul 8, 02:50 UTC7h 30m
2026-07-07 BAW256 - Jul 7, 04:55 UTCJul 7, 14:00 UTC9h 5m
2026-07-06 BAW257 - Jul 6, 18:15 UTCJul 7, 01:55 UTC7h 40m
2026-07-06 BAW118 - Jul 6, 04:30 UTCJul 6, 12:10 UTC7h 40m
2026-07-06 BAW118 - Jul 6, 01:40 UTCJul 6, 02:00 UTC20m
2026-07-05 BAW119 - Jul 5, 13:30 UTCJul 5, 22:30 UTC9h 0m
2026-07-05 BAW9EW YUL → LHR Jul 5, 02:40 UTCJul 5, 08:35 UTC5h 55m
2026-07-04 BAW6NC - Jul 4, 17:25 UTCJul 5, 00:00 UTC6h 35m
2026-07-04 BAW118 - Jul 4, 02:15 UTCJul 4, 12:20 UTC10h 5m
2026-07-03 BAW119 - Jul 3, 13:30 UTCJul 3, 22:35 UTC9h 5m
2026-07-02 BAW138 - Jul 2, 20:20 UTCJul 3, 05:40 UTC9h 20m
2026-07-02 BAW139 - Jul 2, 09:05 UTCJul 2, 17:45 UTC8h 40m
2026-07-01 BAW198 - Jul 1, 08:15 UTCJul 1, 17:25 UTC9h 10m
2026-06-30 BAW199 - Jun 30, 20:50 UTCJul 1, 05:30 UTC8h 40m
2026-06-30 BAW198 - Jun 30, 07:35 UTCJun 30, 16:45 UTC9h 10m
2026-06-29 BAW199 - Jun 29, 20:24 UTCJun 30, 05:00 UTC8h 36m
2026-06-29 BAW198 - Jun 29, 07:44 UTCJun 29, 16:50 UTC9h 5m
2026-06-28 BAW199 - Jun 28, 20:29 UTCJun 29, 04:55 UTC8h 25m
2026-06-28 BAW198 - Jun 28, 07:50 UTCJun 28, 17:10 UTC9h 20m
2026-06-27 BAW199 - Jun 27, 20:24 UTCJun 28, 04:55 UTC8h 30m
2026-06-27 BAW198 - Jun 27, 07:34 UTCJun 27, 16:55 UTC9h 20m
2026-06-26 BAW199 - Jun 26, 20:34 UTCJun 27, 04:59 UTC8h 25m
2026-06-26 BAW198 - Jun 26, 07:50 UTCJun 26, 17:15 UTC9h 25m
2026-06-25 BAW199 - Jun 25, 20:30 UTCJun 26, 04:55 UTC8h 25m
2026-06-25 BAW256 - Jun 25, 04:49 UTCJun 25, 13:50 UTC9h 0m
2026-06-24 BAW257 - Jun 24, 18:39 UTCJun 25, 02:25 UTC7h 45m
2026-06-24 BAW118 - Jun 24, 01:39 UTCJun 24, 11:45 UTC10h 5m
2026-06-23 BAW119 - Jun 23, 22:40 UTCJun 23, 22:49 UTC10m
2026-06-23 BAW119 - Jun 23, 13:39 UTCJun 23, 21:20 UTC7h 40m
2026-06-23 BAW86 - Jun 23, 03:34 UTCJun 23, 09:49 UTC6h 15m
2026-06-23 BAW86 - Jun 23, 01:00 UTCJun 23, 01:15 UTC15m
2026-06-22 BAW87 - Jun 22, 13:44 UTCJun 22, 22:44 UTC9h 0m
2026-06-22 BAW220 STL → LHR Jun 22, 02:45 UTCJun 22, 10:15 UTC7h 30m
2026-06-21 BAW221 - Jun 21, 15:59 UTCJun 22, 00:14 UTC8h 15m
2026-06-21 BAW36 - Jun 21, 00:49 UTCJun 21, 10:54 UTC10h 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-ZBJA page for operator, model, and routing details .

Mode-S 40688E frequently asked

What is Mode-S code 40688E?
40688E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-ZBJA.
Where is Mode-S 40688E registered?
Mode-S code 40688E 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 40688E broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40688E, octal 20064216, decimal 4,221,070.
What flights does 40688E operate?
Mode-S 40688E has broadcast 20 distinct callsigns, including BAW36, BAW136, BAW199, BAW276, BAW135.