Apparatus

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sensors Mode-S transponder

406B12

ICAO 24-bit transponder address · allocated to United Kingdom

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

Hex
406B12
Octal
20065422
Decimal
4,221,714
Country
GB
Tail
G-TUIE
Type
B788
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
260
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 406B12.

Country allocation

The ICAO 24-bit address 406B12 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
TOM115 - 8 2026-07-13
TOM193 TUI Airways 7 2026-06-29
TOM524 TUI Airways 6 2026-07-03
TOM754 TUI Airways 5 2026-07-04
TOM192 - 5 2026-07-13
TOM109 - 5 2026-07-02
TOM108 - 5 2026-07-02
TOM97D TUI Airways 4 2026-07-06
TOM9189 - 4 2026-07-03
TOM8YD TUI Airways 4 2026-07-06
TOM8LK TUI Airways 4 2026-07-05
TOM755 - 4 2026-07-04
TOM684 TUI Airways 4 2026-07-08
TOM56M TUI Airways 4 2026-07-05
TOM4DX TUI Airways 4 2026-07-05
TOM24M - 4 2026-07-26
TOM246 - 4 2026-04-13
TOM19N TUI Airways 4 2026-07-17
TOM99H TUI Airways 3 2026-07-26
TOM9849 - 3 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TOM6TL MAN → MAH Jul 26, 20:55 UTCJul 26, 22:30 UTC1h 35m
2026-07-26 TOM26A TFS → EXT Jul 26, 17:10 UTCJul 26, 18:40 UTC1h 30m
2026-07-26 TOM24M - Jul 26, 11:15 UTCJul 26, 14:55 UTC3h 40m
2026-07-26 TOM99H LGW → FRA Jul 26, 05:35 UTCJul 26, 08:45 UTC3h 11m
2026-07-25 TOM35E BRS → JSI Jul 25, 14:35 UTCJul 25, 18:05 UTC3h 30m
2026-07-25 TOM8JM LGW → KGS Jul 25, 09:35 UTCJul 25, 12:50 UTC3h 15m
2026-07-24 TOM065 CUN → LGW Jul 24, 21:25 UTCJul 25, 06:35 UTC9h 10m
2026-07-24 TOM064 LGW → CUN Jul 24, 09:25 UTCJul 24, 18:55 UTC9h 30m
2026-07-23 TOM037 MBJ → LGW Jul 23, 10:35 UTCJul 24, 07:00 UTC20h 25m
2026-07-23 TOM037 MBJ → LGW Jul 23, 10:20 UTCJul 24, 07:00 UTC20h 40m
2026-07-23 TOM9633 GLA → LGW Jul 23, 07:00 UTCJul 23, 08:15 UTC1h 15m
2026-07-22 TOM633 MLB → GLA Jul 22, 21:35 UTCJul 23, 04:50 UTC7h 15m
2026-07-22 TOM070 LGW → MLB Jul 22, 11:10 UTCJul 22, 18:10 UTC7h 0m
2026-07-20 TOM039 CUN → LGW Jul 20, 21:25 UTCJul 21, 06:35 UTC9h 9m
2026-07-20 TOM038 LGW → CUN Jul 20, 10:25 UTCJul 20, 19:25 UTC9h 0m
2026-07-20 TOM983P MAN → LGW Jul 20, 08:00 UTCJul 20, 08:40 UTC40m
2026-07-19 TOM7JB CWL → MAN Jul 19, 19:55 UTCJul 20, 02:45 UTC6h 50m
2026-07-19 TOM982P MAN → LTN Jul 19, 17:15 UTCJul 19, 17:55 UTC40m
2026-07-19 TOM24M - Jul 19, 14:00 UTCJul 19, 14:25 UTC25m
2026-07-19 TOM24M - Jul 19, 10:45 UTCJul 19, 13:55 UTC3h 10m
2026-07-19 TOM99H LGW → FRA Jul 19, 05:40 UTCJul 19, 08:45 UTC3h 5m
2026-07-18 TOM7EL LGW → LPA Jul 18, 17:05 UTCJul 18, 18:55 UTC1h 50m
2026-07-18 TOM1JD MAN → AGA Jul 18, 13:25 UTCJul 18, 15:15 UTC1h 50m
2026-07-18 TOM964P LGW → NCL Jul 18, 06:45 UTCJul 18, 08:05 UTC1h 20m
2026-07-17 TOM19N INN → LGW Jul 17, 21:44 UTCJul 18, 01:15 UTC3h 30m
2026-07-17 TOM5NB CFU → EXT Jul 17, 16:00 UTCJul 17, 19:40 UTC3h 40m
2026-07-17 TOM963P DUS → LGW Jul 17, 12:40 UTCJul 17, 13:40 UTC1h 0m
2026-07-17 TOM4NY - Jul 17, 08:54 UTCJul 17, 10:50 UTC1h 55m
2026-07-17 TOM75J - Jul 17, 05:10 UTCJul 17, 06:50 UTC1h 40m
2026-07-16 TOM782 LGW → LGW Jul 16, 14:10 UTCJul 17, 01:45 UTC11h 35m
2026-07-16 TOM6DX DBV → LGW Jul 16, 09:40 UTCJul 16, 12:05 UTC2h 25m
2026-07-16 TOM8LV LGW → DBV Jul 16, 05:45 UTCJul 16, 07:50 UTC2h 5m
2026-07-15 TOM5BK PFO → LGW Jul 15, 16:50 UTCJul 15, 21:00 UTC4h 10m
2026-07-15 TOM3NT - Jul 15, 11:00 UTCJul 15, 14:40 UTC3h 40m
2026-07-14 TOM025 - Jul 14, 10:35 UTCJul 15, 05:25 UTC18h 49m
2026-07-14 TOM024 LGW → LGW Jul 14, 09:30 UTCJul 15, 05:25 UTC19h 54m
2026-07-13 TOM039 CUN → LGW Jul 13, 21:40 UTCJul 14, 06:45 UTC9h 5m
2026-07-13 TOM192 MAN → CUN Jul 13, 09:40 UTCJul 13, 19:10 UTC9h 30m
2026-07-13 TOM115 - Jul 13, 05:25 UTCJul 13, 06:45 UTC1h 20m
2026-07-12 TOM115 - Jul 12, 10:35 UTCJul 13, 06:45 UTC20h 10m
2026-07-12 TOM115 MAN → MAN Jul 12, 10:25 UTCJul 13, 06:45 UTC20h 20m
2026-07-12 TOM9621 GLA → MAN Jul 12, 08:05 UTCJul 12, 08:50 UTC45m
2026-07-11 TOM621 CUN → GLA Jul 11, 21:30 UTCJul 12, 05:50 UTC8h 20m
2026-07-11 TOM620 GLA → CUN Jul 11, 09:55 UTCJul 11, 19:20 UTC9h 25m
2026-07-10 TOM743 - Jul 10, 21:40 UTCJul 11, 04:50 UTC7h 10m
2026-07-10 TOM742 GLA → MLB Jul 10, 10:20 UTCJul 10, 18:45 UTC8h 25m
2026-07-09 TOM19N - Jul 9, 17:10 UTCJul 10, 02:20 UTC9h 10m
2026-07-09 TOM7MB - Jul 9, 12:35 UTCJul 9, 14:55 UTC2h 20m
2026-07-09 TOM4JH - Jul 9, 08:15 UTCJul 9, 10:40 UTC2h 25m
2026-07-08 TOM685 CUN → GLA Jul 8, 21:15 UTCJul 9, 06:00 UTC8h 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-TUIE page for operator, model, and routing details .

Mode-S 406B12 frequently asked

What is Mode-S code 406B12?
406B12 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TUIE.
Where is Mode-S 406B12 registered?
Mode-S code 406B12 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 406B12 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406B12, octal 20065422, decimal 4,221,714.
What flights does 406B12 operate?
Mode-S 406B12 has broadcast 20 distinct callsigns, including TOM115, TOM193, TOM524, TOM754, TOM192.