Apparatus

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sensors Mode-S transponder

4066D0

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-TAWI · BOEING 737-800

Hex
4066D0
Octal
20063320
Decimal
4,220,624
Country
GB
Tail
G-TAWI
Type
B738
Broadcasting now · callsign TOM1T · 1,400 ft
Flights observed
334
Distinct callsigns
20
Country
GB
Last broadcast
44m ago

Current position

4066D0 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4066D0 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
TOM9YW - 7 2026-07-03
TOM57M - 7 2026-07-03
TOM9AE - 6 2026-07-03
TOM6LT - 6 2026-06-27
TOM69M - 6 2026-07-04
TOM5PH TUI Airways 6 2026-06-18
TOM53B - 6 2026-07-07
TOM3NL - 6 2026-07-03
TOM30J - 6 2026-07-04
TOM9JV - 5 2026-07-07
TOM9BJ TUI Airways 5 2026-06-22
TOM97X - 5 2026-07-12
TOM7XM TUI Airways 5 2026-06-18
TOM65X - 5 2026-07-07
TOM5KA TUI Airways 5 2026-06-28
TOM429 TUI Airways 5 2026-07-06
TOM3LY TUI Airways 5 2026-06-22
TOM2MX TUI Airways 5 2026-06-28
TOM2AT - 5 2026-07-12
TOM27Y TUI Airways 5 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TOM1T - Jul 14, 16:45 UTCJul 14, 17:30 UTC45m
2026-07-14 TOM1T - Jul 14, 14:45 UTCJul 14, 16:00 UTC1h 15m
2026-07-14 TOM1T - Jul 14, 11:10 UTCJul 14, 11:40 UTC30m
2026-07-14 TOM9001 - Jul 14, 06:05 UTCJul 14, 06:45 UTC40m
2026-07-13 TOM2BC - Jul 13, 21:20 UTCJul 14, 00:30 UTC3h 10m
2026-07-13 TOM2PH - Jul 13, 15:00 UTCJul 13, 18:45 UTC3h 45m
2026-07-13 TOM9JW - Jul 13, 09:45 UTCJul 13, 13:20 UTC3h 35m
2026-07-13 TOM4GX - Jul 13, 05:20 UTCJul 13, 08:20 UTC3h 0m
2026-07-12 TOM2AT - Jul 12, 19:20 UTCJul 12, 22:30 UTC3h 10m
2026-07-12 TOM97X - Jul 12, 13:40 UTCJul 12, 17:30 UTC3h 50m
2026-07-12 TOM1JT FAO → CWL Jul 12, 09:25 UTCJul 12, 11:30 UTC2h 5m
2026-07-12 TOM34J CWL → FAO Jul 12, 05:45 UTCJul 12, 08:01 UTC2h 15m
2026-07-11 TOM89J RHO → CWL Jul 11, 21:45 UTCJul 12, 01:55 UTC4h 10m
2026-07-11 TOM7HN CWL → RHO Jul 11, 16:30 UTCJul 11, 20:20 UTC3h 50m
2026-07-11 TOM629 NBE → CWL Jul 11, 10:35 UTCJul 11, 13:20 UTC2h 45m
2026-07-11 TOM628 CWL → NBE Jul 11, 05:31 UTCJul 11, 08:10 UTC2h 40m
2026-07-10 TOM2LV - Jul 10, 17:25 UTCJul 10, 20:10 UTC2h 45m
2026-07-10 TOM63J - Jul 10, 12:30 UTCJul 10, 15:15 UTC2h 45m
2026-07-10 TOM2MN MAH → CWL Jul 10, 08:30 UTCJul 10, 10:40 UTC2h 10m
2026-07-10 TOM7YA CWL → MAH Jul 10, 05:15 UTCJul 10, 07:15 UTC2h 0m
2026-07-09 TOM4DY - Jul 9, 15:10 UTCJul 9, 18:15 UTC3h 5m
2026-07-09 TOM80L - Jul 9, 10:05 UTCJul 9, 13:20 UTC3h 15m
2026-07-09 TOM934P - Jul 9, 08:00 UTCJul 9, 08:35 UTC35m
2026-07-08 TOM8VM RHO → BHX Jul 8, 21:15 UTCJul 9, 02:05 UTC4h 50m
2026-07-08 TOM7FT ACE → ACE Jul 8, 16:00 UTCJul 8, 19:45 UTC3h 45m
2026-07-08 TOM7DE DLM → CWL Jul 8, 12:40 UTCJul 8, 14:30 UTC1h 50m
2026-07-08 TOM78B LBA → PMI Jul 8, 09:00 UTCJul 8, 10:55 UTC1h 55m
2026-07-08 TOM1LJ - Jul 8, 07:10 UTCJul 8, 07:45 UTC35m
2026-07-08 TOM1LJ - Jul 8, 00:45 UTCJul 8, 03:20 UTC2h 35m
2026-07-07 TOM3EL - Jul 7, 21:45 UTCJul 7, 23:40 UTC1h 55m
2026-07-07 TOM53B EFL → CWL Jul 7, 16:15 UTCJul 7, 19:45 UTC3h 30m
2026-07-07 TOM65X CWL → EFL Jul 7, 11:55 UTCJul 7, 15:05 UTC3h 10m
2026-07-07 TOM9JV - Jul 7, 08:45 UTCJul 7, 10:30 UTC1h 45m
2026-07-07 TOM1VA - Jul 7, 05:05 UTCJul 7, 06:45 UTC1h 40m
2026-07-06 TOM2BG - Jul 6, 18:05 UTCJul 6, 21:10 UTC3h 5m
2026-07-06 TOM6YM - Jul 6, 13:40 UTCJul 6, 16:15 UTC2h 35m
2026-07-06 TOM429 NBE → CWL Jul 6, 11:40 UTCJul 6, 12:15 UTC35m
2026-07-06 TOM429 NBE → CWL Jul 6, 09:20 UTCJul 6, 11:35 UTC2h 15m
2026-07-06 TOM428 CWL → NBE Jul 6, 05:15 UTCJul 6, 08:05 UTC2h 50m
2026-07-05 TOM35M BHX → SSH Jul 5, 21:15 UTCJul 6, 02:00 UTC4h 45m
2026-07-05 TOM8FM CWL → PFO Jul 5, 15:35 UTCJul 5, 19:30 UTC3h 55m
2026-07-05 TOM12X - Jul 5, 10:35 UTCJul 5, 14:00 UTC3h 25m
2026-07-05 TOM9LX - Jul 5, 05:10 UTCJul 5, 08:45 UTC3h 35m
2026-07-04 TOM700 CWL → HRG Jul 4, 13:40 UTCJul 5, 01:35 UTC11h 55m
2026-07-04 TOM69M - Jul 4, 10:10 UTCJul 4, 12:20 UTC2h 10m
2026-07-04 TOM30J CWL → ALC Jul 4, 06:30 UTCJul 4, 08:35 UTC2h 5m
2026-07-03 TOM3NL - Jul 3, 18:15 UTCJul 3, 22:00 UTC3h 45m
2026-07-03 TOM9AE - Jul 3, 13:50 UTCJul 3, 16:55 UTC3h 5m
2026-07-03 TOM9YW - Jul 3, 09:55 UTCJul 3, 12:00 UTC2h 5m
2026-07-03 TOM57M - Jul 3, 05:40 UTCJul 3, 07:35 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-TAWI page for operator, model, and routing details .

Mode-S 4066D0 frequently asked

What is Mode-S code 4066D0?
4066D0 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-TAWI.
Where is Mode-S 4066D0 registered?
Mode-S code 4066D0 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 4066D0 broadcasting right now?
Yes. Mode-S 4066D0 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4066D0, octal 20063320, decimal 4,220,624.
What flights does 4066D0 operate?
Mode-S 4066D0 has broadcast 20 distinct callsigns, including TOM9YW, TOM57M, TOM9AE, TOM6LT, TOM69M.