Apparatus

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sensors Mode-S transponder

40779A

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-XWBD · AIRBUS A-350-1000

Hex
40779A
Octal
20073632
Decimal
4,224,922
Country
GB
Tail
G-XWBD
Type
A35K
No current signal · last broadcast 4h ago
Flights observed
153
Distinct callsigns
20
Country
GB
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 40779A.

Country allocation

The ICAO 24-bit address 40779A 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
BAW32 British Airways 14 2026-05-29
BAW31 - 13 2026-07-14
BAW21ML - 10 2026-06-30
BAW91C - 9 2026-06-23
BAW219V - 9 2026-06-29
BAW19W - 9 2026-06-23
BAW59 - 8 2026-07-08
BAW58L - 8 2026-07-09
BAW223N British Airways 7 2026-06-28
BAW8 - 6 2026-07-13
BAW7 - 6 2026-07-12
BAW22E - 6 2026-06-29
BAW8D British Airways 5 2026-04-14
BAW78 - 5 2026-07-11
BAW4LV - 5 2026-07-08
BAW2MW British Airways 5 2026-07-07
BAW9CG - 4 2026-06-25
BAW3GB - 4 2026-06-26
BAW247 - 4 2026-06-26
BAW246 - 4 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BAW31 - Jul 14, 07:20 UTCJul 14, 07:55 UTC35m
2026-07-13 BAW31 - Jul 13, 19:55 UTCJul 14, 02:50 UTC6h 55m
2026-07-13 BAW8 HND → LHR Jul 13, 00:45 UTCJul 13, 14:45 UTC14h 0m
2026-07-12 BAW7 LHR → HND Jul 12, 08:50 UTCJul 12, 21:25 UTC12h 35m
2026-07-11 BAW78 LHR → LHR Jul 11, 13:50 UTCJul 12, 05:15 UTC15h 25m
2026-07-09 BAW58L - Jul 9, 17:00 UTCJul 10, 04:20 UTC11h 20m
2026-07-08 BAW59 - Jul 8, 21:50 UTCJul 9, 08:25 UTC10h 35m
2026-07-08 BAW4LV LAS → LHR Jul 8, 05:40 UTCJul 8, 14:45 UTC9h 5m
2026-07-07 BAW2MW LHR → LAS Jul 7, 17:00 UTCJul 8, 03:00 UTC10h 0m
2026-07-07 BAW88C YVR → LHR Jul 7, 04:30 UTCJul 7, 13:00 UTC8h 30m
2026-07-06 BAW5VY - Jul 6, 17:20 UTCJul 7, 02:25 UTC9h 5m
2026-07-05 BAW142 DEL → LHR Jul 5, 20:55 UTCJul 6, 02:10 UTC5h 15m
2026-07-05 BAW143 - Jul 5, 09:50 UTCJul 5, 17:25 UTC7h 35m
2026-07-04 BAW142 DEL → LHR Jul 4, 20:35 UTCJul 5, 01:20 UTC4h 45m
2026-07-04 BAW143 - Jul 4, 09:50 UTCJul 4, 17:15 UTC7h 25m
2026-07-03 BAW78 - Jul 3, 12:55 UTCJul 4, 05:15 UTC16h 20m
2026-07-02 BAW58L CPT → LHR Jul 2, 17:40 UTCJul 3, 04:50 UTC11h 10m
2026-07-01 BAW59 LHR → CPT Jul 1, 22:30 UTCJul 2, 09:20 UTC10h 50m
2026-07-01 BAW4LV LAS → LHR Jul 1, 06:50 UTCJul 1, 15:35 UTC8h 45m
2026-06-30 BAW2MW LHR → LAS Jun 30, 18:50 UTCJul 1, 04:25 UTC9h 35m
2026-06-30 BAW21ML DEN → LHR Jun 30, 01:25 UTCJun 30, 09:30 UTC8h 6m
2026-06-29 BAW219V - Jun 29, 13:04 UTCJun 29, 22:15 UTC9h 10m
2026-06-29 BAW22E - Jun 29, 02:00 UTCJun 29, 09:20 UTC7h 20m
2026-06-28 BAW223N LHR → BNA Jun 28, 20:25 UTCJun 28, 22:59 UTC2h 35m
2026-06-28 BAW223N LHR → BNA Jun 28, 14:59 UTCJun 28, 20:19 UTC5h 20m
2026-06-27 BAW246 - Jun 27, 18:49 UTCJun 28, 05:34 UTC10h 45m
2026-06-26 BAW247 - Jun 26, 21:59 UTCJun 27, 08:44 UTC10h 45m
2026-06-26 BAW3GB PHX → LHR Jun 26, 04:24 UTCJun 26, 13:45 UTC9h 20m
2026-06-25 BAW9CG LHR → PHX Jun 25, 15:44 UTCJun 26, 01:45 UTC10h 0m
2026-06-25 BAW21ML DEN → LHR Jun 25, 01:24 UTCJun 25, 09:50 UTC8h 25m
2026-06-24 BAW219V - Jun 24, 13:10 UTCJun 24, 22:35 UTC9h 25m
2026-06-23 BAW19W AUS → LHR Jun 23, 23:10 UTCJun 24, 07:44 UTC8h 35m
2026-06-23 BAW91C - Jun 23, 10:44 UTCJun 23, 20:10 UTC9h 25m
2026-06-23 BAW58L - Jun 23, 02:04 UTCJun 23, 04:14 UTC2h 10m
2026-06-22 BAW58L - Jun 22, 17:00 UTCJun 22, 17:15 UTC15m
2026-06-21 BAW59 LHR → CPT Jun 21, 22:04 UTCJun 22, 00:04 UTC2h 0m
2026-06-21 BAW4LV LAS → LHR Jun 21, 05:15 UTCJun 21, 14:24 UTC9h 10m
2026-06-20 BAW2MW LHR → LAS Jun 20, 16:44 UTCJun 21, 02:35 UTC9h 50m
2026-06-20 BAW3GB PHX → LHR Jun 20, 04:24 UTCJun 20, 13:44 UTC9h 20m
2026-06-19 BAW9CG LHR → PHX Jun 19, 15:54 UTCJun 20, 01:44 UTC9h 50m
2026-06-18 BAW19W AUS → LHR Jun 18, 23:30 UTCJun 19, 08:14 UTC8h 44m
2026-06-18 BAW91C - Jun 18, 10:35 UTCJun 18, 20:10 UTC9h 35m
2026-06-17 BAW246 - Jun 17, 18:40 UTCJun 18, 05:15 UTC10h 35m
2026-06-16 BAW247 - Jun 16, 21:40 UTCJun 17, 09:00 UTC11h 20m
2026-06-16 BAW3GB PHX → LHR Jun 16, 04:35 UTCJun 16, 13:44 UTC9h 10m
2026-06-15 BAW9CG - Jun 15, 16:19 UTCJun 16, 01:55 UTC9h 35m
2026-06-15 BAW21ML DEN → LHR Jun 15, 02:10 UTCJun 15, 10:35 UTC8h 25m
2026-06-14 BAW219V - Jun 14, 13:50 UTCJun 14, 22:45 UTC8h 55m
2026-06-14 BAW21ML DEN → LHR Jun 14, 00:55 UTCJun 14, 09:10 UTC8h 15m
2026-06-13 BAW219V - Jun 13, 13:30 UTCJun 13, 22:25 UTC8h 55m

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

Mode-S 40779A frequently asked

What is Mode-S code 40779A?
40779A is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-XWBD.
Where is Mode-S 40779A registered?
Mode-S code 40779A 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 40779A broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40779A, octal 20073632, decimal 4,224,922.
What flights does 40779A operate?
Mode-S 40779A has broadcast 20 distinct callsigns, including BAW32, BAW31, BAW21ML, BAW91C, BAW219V.