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 5h ago
Flights observed
85
Distinct callsigns
20
Country
GB
Last broadcast
5h 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW32 HKG → LHR May 29, 20:55 UTCMay 30, 05:20 UTC8h 25m
2026-05-29 BAW32 HKG → LHR May 29, 15:25 UTCMay 29, 15:40 UTC15m
2026-05-29 BAW31 LHR → HKG May 29, 06:25 UTCMay 29, 07:00 UTC35m
2026-05-28 BAW31 LHR → HKG May 28, 18:55 UTCMay 29, 02:00 UTC7h 5m
2026-05-26 BAW9HL PHL → LHR May 26, 22:59 UTCMay 27, 05:40 UTC6h 40m
2026-05-26 BAW6RB LHR → PHL May 26, 13:40 UTCMay 26, 20:40 UTC7h 0m
2026-05-25 BAW19W AUS → LHR May 25, 23:24 UTCMay 26, 08:10 UTC8h 45m
2026-05-25 BAW91C LHR → AUS May 25, 10:50 UTCMay 25, 20:40 UTC9h 50m
2026-05-24 BAW32 HKG → LHR May 24, 20:40 UTCMay 25, 05:10 UTC8h 30m
2026-05-24 BAW32 HKG → LHR May 24, 15:05 UTCMay 24, 15:25 UTC20m
2026-05-23 BAW31 LHR → HKG May 23, 18:45 UTCMay 24, 07:15 UTC12h 30m
2026-05-23 BAW4LV LAS → LHR May 23, 05:25 UTCMay 23, 14:45 UTC9h 20m
2026-05-22 BAW2MW LHR → LAS May 22, 17:20 UTCMay 23, 02:55 UTC9h 34m
2026-05-21 BAW19W AUS → LHR May 21, 23:15 UTCMay 22, 07:35 UTC8h 20m
2026-05-21 BAW91C LHR → AUS May 21, 10:35 UTCMay 21, 20:20 UTC9h 45m
2026-05-20 BAW32 HKG → LHR May 20, 20:45 UTCMay 21, 05:05 UTC8h 20m
2026-05-20 BAW32 HKG → LHR May 20, 15:10 UTCMay 20, 15:25 UTC15m
2026-05-19 BAW31 LHR → HKG May 19, 18:45 UTCMay 20, 07:05 UTC12h 21m
2026-05-19 BAW8 HND → LHR May 19, 00:20 UTCMay 19, 14:25 UTC14h 5m
2026-05-18 BAW7 LHR → HND May 18, 08:50 UTCMay 18, 22:00 UTC13h 9m
2026-05-17 BAW5CA YYZ → LHR May 17, 22:35 UTCMay 18, 05:15 UTC6h 40m
2026-05-17 BAW9ZY LHR → YYZ May 17, 12:55 UTCMay 17, 20:01 UTC7h 5m
2026-05-16 BAW78 ACC → LHR May 16, 13:25 UTCMay 17, 05:20 UTC15h 55m
2026-05-16 BAW32 HKG → LHR May 16, 00:40 UTCMay 16, 06:06 UTC5h 26m
2026-05-15 BAW32 HKG → LHR May 15, 16:45 UTCMay 15, 17:00 UTC15m
2026-05-14 BAW31 LHR → HKG May 14, 21:50 UTCMay 15, 10:25 UTC12h 35m
2026-05-14 BAW4LV LAS → LHR May 14, 06:45 UTCMay 14, 15:40 UTC8h 55m
2026-05-13 BAW2MW LHR → LAS May 13, 18:10 UTCMay 14, 04:15 UTC10h 5m
2026-05-12 BAW19W AUS → LHR May 12, 23:50 UTCMay 13, 08:50 UTC9h 0m
2026-05-12 BAW91C LHR → AUS May 12, 10:30 UTCMay 12, 20:25 UTC9h 55m
2026-05-11 BAW246 GRU → LHR May 11, 18:40 UTCMay 12, 05:10 UTC10h 30m
2026-05-10 BAW247 LHR → GRU May 10, 21:35 UTCMay 11, 09:00 UTC11h 25m
2026-05-09 BAW58L CPT → LHR May 9, 17:00 UTCMay 10, 04:25 UTC11h 25m
2026-05-09 BAW59 LHR → CPT May 9, 08:20 UTCMay 9, 08:45 UTC25m
2026-05-08 BAW59 LHR → CPT May 8, 21:55 UTCMay 8, 23:45 UTC1h 50m
2026-05-08 BAW8 HND → LHR May 8, 00:25 UTCMay 8, 14:10 UTC13h 45m
2026-05-07 BAW7 LHR → HND May 7, 08:45 UTCMay 7, 21:45 UTC13h 0m
2026-05-06 BAW78 ACC → LHR May 6, 13:45 UTCMay 7, 05:10 UTC15h 24m
2026-05-05 BAW32 HKG → LHR May 5, 20:40 UTCMay 6, 05:05 UTC8h 25m
2026-05-05 BAW32 HKG → LHR May 5, 15:05 UTCMay 5, 15:25 UTC20m
2026-05-05 BAW31 LHR → HKG May 5, 06:35 UTCMay 5, 07:00 UTC25m
2026-05-04 BAW31 LHR → HKG May 4, 18:55 UTCMay 4, 21:50 UTC2h 55m
2026-05-04 BAW8 HND → LHR May 4, 00:34 UTCMay 4, 14:15 UTC13h 40m
2026-05-03 BAW7 LHR → HND May 3, 08:55 UTCMay 3, 22:15 UTC13h 20m
2026-05-02 BAW32 HKG → LHR May 2, 20:40 UTCMay 3, 05:10 UTC8h 29m
2026-05-02 BAW32 HKG → LHR May 2, 15:15 UTCMay 2, 15:35 UTC20m
2026-05-02 BAW31 LHR → HKG May 2, 07:00 UTCMay 2, 07:25 UTC25m
2026-05-01 BAW31 LHR → HKG May 1, 19:05 UTCMay 1, 23:35 UTC4h 30m
2026-05-01 BAW8 HND → LHR May 1, 00:20 UTCMay 1, 14:35 UTC14h 15m
2026-04-30 BAW7 LHR → HND Apr 30, 08:50 UTCApr 30, 21:35 UTC12h 45m

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 5h 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, BAW91C, BAW19W, BAW8D.