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sensors Mode-S transponder

4072A4

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TAWV · BOEING 737-800

Hex
4072A4
Octal
20071244
Decimal
4,223,652
Country
GB
Tail
G-TAWV
Type
B738
Broadcasting now · callsign TOM50V · 35,475 ft
Flights observed
334
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 15:05 UTC

Current position

4072A4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4072A4 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
TOM9XH TUI Airways 10 2026-07-07
TOM71Y TUI Airways 10 2026-07-15
TOM8XE - 9 2026-07-07
TOM2MA - 9 2026-07-15
TOM9YX - 8 2026-07-13
TOM1DA - 8 2026-07-13
TOM9PY TUI Airways 7 2026-07-07
TOM8KX - 7 2026-07-16
TOM7LB - 7 2026-07-16
TOM6KD TUI Airways 7 2026-07-15
TOM64X - 7 2026-07-15
TOM5JL TUI Airways 7 2026-07-12
TOM3PY - 7 2026-07-16
TOM2DL - 7 2026-07-16
TOM28K - 7 2026-07-12
TOM891 - 6 2026-07-12
TOM80E TUI Airways 6 2026-07-11
TOM63A TUI Airways 6 2026-07-11
TOM37B - 6 2026-07-11
TOM2YB - 6 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TOM533 BVC → LGW Jul 26, 10:50 UTCJul 26, 14:55 UTC4h 5m
2026-07-26 TOM532 LGW → DLM Jul 26, 05:20 UTCJul 26, 08:40 UTC3h 21m
2026-07-25 TOM3KE LEI → BHX Jul 25, 15:30 UTCJul 25, 18:45 UTC3h 15m
2026-07-25 TOM75H STN → TRN Jul 25, 10:55 UTCJul 25, 13:40 UTC2h 45m
2026-07-24 TOM207 DLM → LGW Jul 24, 23:25 UTCJul 25, 00:05 UTC40m
2026-07-24 TOM207 DLM → LGW Jul 24, 20:20 UTCJul 24, 23:20 UTC3h 0m
2026-07-24 TOM206 LGW → DLM Jul 24, 15:35 UTCJul 24, 18:55 UTC3h 20m
2026-07-24 TOM59G CFU → MAN Jul 24, 11:05 UTCJul 24, 13:55 UTC2h 50m
2026-07-24 TOM8AE LPA → BOH Jul 24, 06:50 UTCJul 24, 09:10 UTC2h 20m
2026-07-23 TOM9NK - Jul 23, 13:10 UTCJul 23, 16:15 UTC3h 5m
2026-07-23 TOM8DE LGW → EFL Jul 23, 09:15 UTCJul 23, 12:00 UTC2h 45m
2026-07-22 TOM5HT RHO → LGW Jul 22, 13:20 UTCJul 22, 17:25 UTC4h 5m
2026-07-22 TOM8HX TRN → GLA Jul 22, 03:10 UTCJul 22, 11:55 UTC8h 45m
2026-07-21 TOM8XG LGW → ZTH Jul 21, 23:10 UTCJul 22, 02:00 UTC2h 50m
2026-07-21 TOM9GM - Jul 21, 17:40 UTCJul 21, 20:55 UTC3h 15m
2026-07-21 TOM6HT LGW → EFL Jul 21, 13:25 UTCJul 21, 16:25 UTC3h 0m
2026-07-21 TOM24J - Jul 21, 09:25 UTCJul 21, 11:20 UTC1h 55m
2026-07-21 TOM1WN LGW → PUY Jul 21, 06:20 UTCJul 21, 07:55 UTC1h 35m
2026-07-20 TOM47W IBZ → LGW Jul 20, 20:15 UTCJul 20, 22:15 UTC2h 0m
2026-07-20 TOM2NL LGW → IBZ Jul 20, 17:05 UTCJul 20, 19:00 UTC1h 55m
2026-07-20 TOM9LG - Jul 20, 11:35 UTCJul 20, 14:55 UTC3h 20m
2026-07-20 TOM9VD LGW → ZTH Jul 20, 07:40 UTCJul 20, 10:30 UTC2h 50m
2026-07-19 TOM3BX BRS → REU Jul 19, 22:05 UTCJul 20, 01:15 UTC3h 10m
2026-07-19 TOM1EV - Jul 19, 16:30 UTCJul 19, 20:00 UTC3h 30m
2026-07-19 TOM4YC - Jul 19, 11:10 UTCJul 19, 14:20 UTC3h 10m
2026-07-19 TOM3LA MAN → IBZ Jul 19, 06:50 UTCJul 19, 09:35 UTC2h 45m
2026-07-18 TOM247F - Jul 18, 20:45 UTCJul 19, 00:40 UTC3h 55m
2026-07-18 TOM246 - Jul 18, 15:50 UTCJul 18, 19:10 UTC3h 20m
2026-07-18 TOM4HX OLB → LGW Jul 18, 10:40 UTCJul 18, 12:50 UTC2h 10m
2026-07-18 TOM9FC PFO → LGW Jul 18, 07:25 UTCJul 18, 09:15 UTC1h 50m
2026-07-17 TOM7WL - Jul 17, 18:40 UTCJul 17, 20:35 UTC1h 55m
2026-07-17 TOM1YG - Jul 17, 15:29 UTCJul 17, 17:20 UTC1h 50m
2026-07-17 TOM51L - Jul 17, 10:44 UTCJul 17, 12:45 UTC2h 0m
2026-07-17 TOM26M - Jul 17, 06:20 UTCJul 17, 08:35 UTC2h 15m
2026-07-16 TOM2DL JKL → STN Jul 16, 21:19 UTCJul 17, 01:05 UTC3h 45m
2026-07-16 TOM8KX - Jul 16, 16:44 UTCJul 16, 20:00 UTC3h 15m
2026-07-16 TOM3PY - Jul 16, 11:30 UTCJul 16, 14:50 UTC3h 20m
2026-07-16 TOM7LB - Jul 16, 07:05 UTCJul 16, 09:50 UTC2h 45m
2026-07-15 TOM64X - Jul 15, 22:35 UTCJul 16, 00:30 UTC1h 55m
2026-07-15 TOM6KD LPA → LGW Jul 15, 19:15 UTCJul 15, 21:30 UTC2h 15m
2026-07-15 TOM71Y HRG → LGW Jul 15, 12:40 UTCJul 15, 16:40 UTC4h 0m
2026-07-15 TOM2MA - Jul 15, 07:35 UTCJul 15, 11:00 UTC3h 25m
2026-07-14 TOM623 NBE → STN Jul 14, 20:20 UTCJul 14, 23:05 UTC2h 44m
2026-07-14 TOM622 STN → NBE Jul 14, 16:40 UTCJul 14, 19:15 UTC2h 35m
2026-07-14 TOM79D - Jul 14, 11:35 UTCJul 14, 15:05 UTC3h 30m
2026-07-14 TOM2PE - Jul 14, 07:25 UTCJul 14, 10:20 UTC2h 55m
2026-07-13 TOM1DA - Jul 13, 10:50 UTCJul 13, 13:50 UTC3h 0m
2026-07-13 TOM9YX - Jul 13, 06:35 UTCJul 13, 08:55 UTC2h 20m
2026-07-12 TOM891 - Jul 12, 13:20 UTCJul 13, 00:40 UTC11h 20m
2026-07-12 TOM5JL KGS → CWL Jul 12, 09:30 UTCJul 12, 11:25 UTC1h 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-TAWV page for operator, model, and routing details .

Mode-S 4072A4 frequently asked

What is Mode-S code 4072A4?
4072A4 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TAWV.
Where is Mode-S 4072A4 registered?
Mode-S code 4072A4 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 4072A4 broadcasting right now?
Yes. Mode-S 4072A4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4072A4, octal 20071244, decimal 4,223,652.
What flights does 4072A4 operate?
Mode-S 4072A4 has broadcast 20 distinct callsigns, including TOM9XH, TOM71Y, TOM8XE, TOM2MA, TOM9YX.