Apparatus

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sensors Mode-S transponder

407AC6

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TUKO · BOEING 737-800

Hex
407AC6
Octal
20075306
Decimal
4,225,734
Country
GB
Tail
G-TUKO
Type
B738
Broadcasting now · callsign TOM8HG · 4,300 ft
Flights observed
163
Distinct callsigns
20
Country
GB
Last broadcast
47m ago

Current position

407AC6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 407AC6 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
TOM5DX TUI Airways 3 2026-06-16
TOM506 TUI Airways 3 2026-06-23
TOM44L TUI Airways 3 2026-06-16
TOM1GN TUI Airways 3 2026-06-23
TOM9NY TUI Airways 2 2026-06-08
TOM9JB TUI Airways 2 2026-06-06
TOM9AJ TUI Airways 2 2026-06-04
TOM8EX TUI Airways 2 2026-06-04
TOM61Y - 2 2026-06-13
TOM5LD TUI Airways 2 2026-06-12
TOM5GD TUI Airways 2 2026-06-06
TOM596 TUI Airways 2 2026-06-06
TOM591 TUI Airways 2 2026-06-22
TOM3TB - 2 2026-06-06
TOM38L TUI Airways 2 2026-06-13
TOM36A TUI Airways 2 2026-06-12
TOM1WJ TUI Airways 2 2026-06-24
TOM1VK TUI Airways 2 2026-06-20
TOM1GY TUI Airways 2 2026-06-08
TOM9YL TUI Airways 1 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-07 TOM8HG - Jul 7, 10:50 UTCJul 7, 13:30 UTC2h 40m
2026-07-07 TOM1EY - Jul 7, 06:10 UTCJul 7, 09:10 UTC3h 0m
2026-07-06 TOM3GC OSL → LGW Jul 6, 19:10 UTCJul 6, 23:00 UTC3h 50m
2026-07-06 TOM9FN MAN → RAK Jul 6, 14:00 UTCJul 6, 17:20 UTC3h 20m
2026-07-06 TOM6EV MAH → BHX Jul 6, 09:45 UTCJul 6, 12:00 UTC2h 15m
2026-07-06 TOM3LT - Jul 6, 06:15 UTCJul 6, 08:20 UTC2h 5m
2026-07-05 TOM5DW - Jul 5, 23:50 UTCJul 6, 02:55 UTC3h 5m
2026-07-05 TOM4EJ - Jul 5, 19:20 UTCJul 5, 21:45 UTC2h 25m
2026-07-05 TOM32X RHO → BHX Jul 5, 13:00 UTCJul 5, 17:15 UTC4h 15m
2026-07-05 TOM5AG - Jul 5, 07:10 UTCJul 5, 10:35 UTC3h 25m
2026-07-04 TOM64J PFO → BHX Jul 4, 19:10 UTCJul 5, 00:00 UTC4h 50m
2026-07-04 TOM67T BRS → SSH Jul 4, 13:25 UTCJul 4, 17:10 UTC3h 45m
2026-07-04 TOM71A - Jul 4, 08:50 UTCJul 4, 10:40 UTC1h 50m
2026-07-04 TOM1XD - Jul 4, 06:15 UTCJul 4, 07:45 UTC1h 30m
2026-07-03 TOM8BJ - Jul 3, 19:55 UTCJul 3, 22:25 UTC2h 30m
2026-07-03 TOM8FC - Jul 3, 15:40 UTCJul 3, 18:00 UTC2h 20m
2026-07-03 TOM457 - Jul 3, 06:15 UTCJul 3, 14:05 UTC7h 50m
2026-07-02 TOM9VL BHX → BHX Jul 2, 16:45 UTCJul 3, 00:25 UTC7h 40m
2026-07-02 TOM5JD - Jul 2, 10:25 UTCJul 2, 13:40 UTC3h 15m
2026-07-02 TOM5YC BHX → EFL Jul 2, 05:45 UTCJul 2, 08:55 UTC3h 10m
2026-07-01 TOM9001 BUD → BHX Jul 1, 21:05 UTCJul 1, 23:20 UTC2h 15m
2026-07-01 TOM902P GLA → EDI Jul 1, 17:05 UTCJul 1, 19:10 UTC2h 5m
2026-07-01 TOM79A LTN → PMI Jul 1, 12:00 UTCJul 1, 15:50 UTC3h 50m
2026-07-01 TOM14E CFU → GLA Jul 1, 07:05 UTCJul 1, 10:50 UTC3h 45m
2026-06-30 TOM9EW - Jun 30, 20:00 UTCJun 30, 23:45 UTC3h 45m
2026-06-30 TOM8VT - Jun 30, 14:30 UTCJun 30, 18:10 UTC3h 40m
2026-06-30 TOM991P MAN → BHX Jun 30, 09:15 UTCJun 30, 09:35 UTC20m
2026-06-29 TOM5KE PFO → MAN Jun 29, 20:19 UTCJun 30, 00:39 UTC4h 20m
2026-06-29 TOM5MD MAN → PFO Jun 29, 14:39 UTCJun 29, 19:09 UTC4h 30m
2026-06-29 TOM990P - Jun 29, 12:14 UTCJun 29, 12:34 UTC20m
2026-06-28 TOM3FJ - Jun 28, 23:50 UTCJun 29, 03:25 UTC3h 35m
2026-06-28 TOM8AY LGW → LGW Jun 28, 18:44 UTCJun 28, 22:15 UTC3h 30m
2026-06-28 TOM3HT - Jun 28, 12:05 UTCJun 28, 13:59 UTC1h 55m
2026-06-28 TOM985P - Jun 28, 08:25 UTCJun 28, 10:35 UTC2h 10m
2026-06-27 TOM99A PMI → MAN Jun 27, 18:49 UTCJun 27, 20:14 UTC1h 25m
2026-06-27 TOM77X JSI → LTN Jun 27, 15:55 UTCJun 27, 17:29 UTC1h 35m
2026-06-27 TOM17H - Jun 27, 12:45 UTCJun 27, 14:20 UTC1h 35m
2026-06-27 TOM34A MAN → HER Jun 27, 09:00 UTCJun 27, 10:34 UTC1h 35m
2026-06-26 TOM982P MAN → LTN Jun 26, 19:09 UTCJun 26, 19:39 UTC30m
2026-06-25 TOM9YE DBV → BRS Jun 25, 09:55 UTCJun 25, 12:30 UTC2h 35m
2026-06-25 TOM23D BRS → DBV Jun 25, 06:00 UTCJun 25, 08:34 UTC2h 35m
2026-06-25 TOM970P GLA → MAN Jun 25, 03:54 UTCJun 25, 04:25 UTC30m
2026-06-24 TOM1WJ LGW → FUE Jun 24, 07:50 UTCJun 24, 16:19 UTC8h 30m
2026-06-23 TOM1GN AYT → LGW Jun 23, 20:15 UTCJun 24, 00:15 UTC4h 0m
2026-06-23 TOM506 LGW → AGA Jun 23, 15:04 UTCJun 23, 18:39 UTC3h 35m
2026-06-23 TOM24J - Jun 23, 10:39 UTCJun 23, 12:29 UTC1h 50m
2026-06-23 TOM1WN LGW → PUY Jun 23, 06:49 UTCJun 23, 08:35 UTC1h 45m
2026-06-22 TOM47W IBZ → BRS Jun 22, 19:14 UTCJun 22, 21:25 UTC2h 10m
2026-06-22 TOM2NL LGW → IBZ Jun 22, 16:05 UTCJun 22, 18:00 UTC1h 55m
2026-06-22 TOM591 BVC → LGW Jun 22, 11:39 UTCJun 22, 14:19 UTC2h 40m

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

Mode-S 407AC6 frequently asked

What is Mode-S code 407AC6?
407AC6 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TUKO.
Where is Mode-S 407AC6 registered?
Mode-S code 407AC6 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 407AC6 broadcasting right now?
Yes. Mode-S 407AC6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407AC6, octal 20075306, decimal 4,225,734.
What flights does 407AC6 operate?
Mode-S 407AC6 has broadcast 20 distinct callsigns, including TOM5DX, TOM506, TOM44L, TOM1GN, TOM9NY.