Apparatus

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sensors Mode-S transponder

406660

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TAWA · BOEING 737-800

Hex
406660
Octal
20063140
Decimal
4,220,512
Country
GB
Tail
G-TAWA
Type
B738
Broadcasting now · callsign TOM1VL · 38,000 ft
Flights observed
141
Distinct callsigns
20
Country
GB
Last broadcast
5h ago

Current position

406660 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 406660 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
TOM56K TUI Airways 7 2026-06-21
TOM37D TUI Airways 5 2026-06-21
TOM96H TUI Airways 4 2026-06-20
TOM60Y TUI Airways 4 2026-06-21
TOM31W TUI Airways 4 2026-06-20
TOM26G TUI Airways 4 2026-06-13
TOM1VL TUI Airways 4 2026-06-14
TOM1FN TUI Airways 4 2026-06-13
TOM9YG - 3 2026-06-15
TOM9KC - 3 2026-06-11
TOM8AJ TUI Airways 3 2026-06-17
TOM7TE TUI Airways 3 2026-06-17
TOM75G - 3 2026-06-11
TOM6TW - 3 2026-06-11
TOM6TJ TUI Airways 3 2026-06-15
TOM5NG TUI Airways 3 2026-06-17
TOM58H TUI Airways 3 2026-06-15
TOM45H TUI Airways 3 2026-06-15
TOM2CW TUI Airways 3 2026-06-11
JAF5HJ - 3 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-21 TOM56K SSH → LGW Jun 21, 15:25 UTCJun 21, 18:00 UTC2h 35m
2026-06-21 TOM37D MAN → LEI Jun 21, 09:40 UTCJun 21, 12:55 UTC3h 15m
2026-06-21 TOM60Y BHX → KVA Jun 21, 05:20 UTCJun 21, 08:20 UTC3h 0m
2026-06-20 TOM3FA SSH → LGW Jun 20, 17:19 UTCJun 20, 17:59 UTC40m
2026-06-20 TOM63H NCL → NBE Jun 20, 14:14 UTCJun 20, 16:00 UTC1h 45m
2026-06-20 TOM96H AYT → BRS Jun 20, 10:34 UTCJun 20, 12:50 UTC2h 15m
2026-06-20 TOM31W EMA → DLM Jun 20, 06:45 UTCJun 20, 08:59 UTC2h 15m
2026-06-19 TOM29J NCL → AGP Jun 19, 11:20 UTCJun 19, 15:09 UTC3h 50m
2026-06-19 TOM61C TFS → LTN Jun 19, 06:24 UTCJun 19, 09:44 UTC3h 20m
2026-06-18 TOM10A - Jun 18, 21:35 UTCJun 19, 01:24 UTC3h 49m
2026-06-18 TOM7PY MAN → MAH Jun 18, 16:00 UTCJun 18, 19:50 UTC3h 50m
2026-06-18 TOM3BG LGW → RHO Jun 18, 10:05 UTCJun 18, 12:20 UTC2h 15m
2026-06-18 TOM5EW MAN → KVA Jun 18, 06:30 UTCJun 18, 08:40 UTC2h 10m
2026-06-17 TOM7TE LBA → HER Jun 17, 14:10 UTCJun 17, 22:55 UTC8h 45m
2026-06-17 TOM5NG RHO → EMA Jun 17, 09:55 UTCJun 17, 12:30 UTC2h 35m
2026-06-17 TOM8AJ ZTH → LGW Jun 17, 05:55 UTCJun 17, 08:20 UTC2h 25m
2026-06-16 TOM7FB AGP → MAN Jun 16, 18:15 UTCJun 16, 20:30 UTC2h 16m
2026-06-16 TOM1LE MAN → JTR Jun 16, 14:30 UTCJun 16, 16:35 UTC2h 5m
2026-06-16 TOM2JY - Jun 16, 09:45 UTCJun 16, 12:20 UTC2h 35m
2026-06-16 TOM3BE BHX → PMI Jun 16, 05:34 UTCJun 16, 07:30 UTC1h 55m
2026-06-15 TOM9YG - Jun 15, 17:40 UTCJun 15, 21:14 UTC3h 35m
2026-06-15 TOM58H BRS → BJV Jun 15, 13:15 UTCJun 15, 16:19 UTC3h 5m
2026-06-15 TOM6TJ DSA → TFS Jun 15, 09:20 UTCJun 15, 11:34 UTC2h 15m
2026-06-15 TOM45H BHX → IBZ Jun 15, 05:35 UTCJun 15, 07:40 UTC2h 5m
2026-06-14 TOM1VL EMA → FAO Jun 14, 20:55 UTCJun 15, 00:24 UTC3h 29m
2026-06-14 TOM56K SSH → LGW Jun 14, 15:25 UTCJun 14, 18:45 UTC3h 20m
2026-06-14 TOM37D MAN → LEI Jun 14, 09:30 UTCJun 14, 13:10 UTC3h 40m
2026-06-14 TOM60Y BHX → KVA Jun 14, 05:25 UTCJun 14, 08:20 UTC2h 55m
2026-06-13 TOM1FN LGW → TFS Jun 13, 19:55 UTCJun 13, 23:30 UTC3h 35m
2026-06-13 TOM26G RHO → GLA Jun 13, 14:45 UTCJun 13, 18:15 UTC3h 30m
2026-06-13 TOM96H AYT → BRS Jun 13, 10:10 UTCJun 13, 12:20 UTC2h 10m
2026-06-13 TOM31W EMA → DLM Jun 13, 06:20 UTCJun 13, 08:35 UTC2h 15m
2026-06-12 TOM2KJ MAN → SID Jun 12, 19:30 UTCJun 12, 22:40 UTC3h 10m
2026-06-12 TOM5LW - Jun 12, 14:45 UTCJun 12, 17:25 UTC2h 40m
2026-06-12 TOM9WK - Jun 12, 09:40 UTCJun 12, 13:15 UTC3h 35m
2026-06-12 TOM9WD LGW → DBV Jun 12, 05:15 UTCJun 12, 07:40 UTC2h 25m
2026-06-11 TOM9KC DBV → BHX Jun 11, 16:45 UTCJun 11, 19:45 UTC3h 0m
2026-06-11 TOM6TW - Jun 11, 13:10 UTCJun 11, 15:15 UTC2h 5m
2026-06-11 TOM75G DBV → LBA Jun 11, 08:55 UTCJun 11, 11:50 UTC2h 55m
2026-06-11 TOM2CW BHX → DBV Jun 11, 05:25 UTCJun 11, 07:40 UTC2h 15m
2026-06-10 TOM79A LTN → PMI Jun 10, 11:35 UTCJun 10, 15:20 UTC3h 45m
2026-06-10 TOM14E CFU → GLA Jun 10, 06:25 UTCJun 10, 10:00 UTC3h 35m
2026-06-09 TOM83C MAN → JSI Jun 9, 16:45 UTCJun 9, 19:50 UTC3h 5m
2026-06-09 TOM7WN BHX → ZTH Jun 9, 11:40 UTCJun 9, 14:50 UTC3h 10m
2026-06-09 TOM51Y LGW → ACE Jun 9, 08:25 UTCJun 9, 10:20 UTC1h 55m
2026-06-09 TOM7PT STN → SZG Jun 9, 05:20 UTCJun 9, 06:55 UTC1h 35m
2026-06-08 TOM9YG - Jun 8, 17:25 UTCJun 8, 20:50 UTC3h 25m
2026-06-08 TOM58H BRS → BJV Jun 8, 12:55 UTCJun 8, 16:05 UTC3h 10m
2026-06-08 TOM6TJ DSA → TFS Jun 8, 09:15 UTCJun 8, 11:25 UTC2h 10m
2026-06-08 TOM45H BHX → IBZ Jun 8, 05:30 UTCJun 8, 07:40 UTC2h 10m

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

Mode-S 406660 frequently asked

What is Mode-S code 406660?
406660 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TAWA.
Where is Mode-S 406660 registered?
Mode-S code 406660 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 406660 broadcasting right now?
Yes. Mode-S 406660 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 406660, octal 20063140, decimal 4,220,512.
What flights does 406660 operate?
Mode-S 406660 has broadcast 20 distinct callsigns, including TOM56K, TOM37D, TOM96H, TOM60Y, TOM31W.