Apparatus

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sensors Mode-S transponder

40660E

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-FDZZ · BOEING 737-800

Hex
40660E
Octal
20063016
Decimal
4,220,430
Country
GB
Tail
G-FDZZ
Type
B738
Broadcasting now · callsign TOM2LV · 36,000 ft
Flights observed
326
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 21:30 UTC

Current position

40660E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 40660E 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
TOM493 TUI Airways 5 2026-06-05
TOM7YL TUI Airways 4 2026-06-04
TOM7GC TUI Airways 4 2026-06-20
TOM7CW TUI Airways 4 2026-06-02
TOM613 TUI Airways 4 2026-06-01
TOM5MH TUI Airways 4 2026-06-20
TOM4YW TUI Airways 4 2026-06-01
TOM4TY TUI Airways 4 2026-06-20
TOM492 TUI Airways 4 2026-06-05
TOM3TJ TUI Airways 4 2026-06-02
TOM3KC TUI Airways 4 2026-05-28
TOM32J TUI Airways 4 2026-06-02
TOM2CN TUI Airways 4 2026-06-02
TOM26E TUI Airways 4 2026-06-21
TOM23Y TUI Airways 4 2026-06-20
TOM9LD TUI Airways 3 2026-06-05
TOM9CV TUI Airways 3 2026-05-30
TOM92G - 3 2026-06-21
TOM8CW TUI Airways 3 2026-06-21
TOM7PL - 3 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TOM3BX BRS → REU Jul 26, 21:15 UTCJul 26, 21:30 UTC15m
2026-07-26 TOM1EV BHX → LEI Jul 26, 16:35 UTCJul 26, 19:40 UTC3h 5m
2026-07-26 TOM4YC MAN → AYT Jul 26, 11:20 UTCJul 26, 14:45 UTC3h 25m
2026-07-26 TOM3LA MAN → IBZ Jul 26, 06:45 UTCJul 26, 09:30 UTC2h 45m
2026-07-25 TOM247 DLM → LGW Jul 25, 20:15 UTCJul 26, 00:05 UTC3h 50m
2026-07-25 TOM246 LGW → DLM Jul 25, 15:20 UTCJul 25, 18:45 UTC3h 25m
2026-07-25 TOM84B LGW → CMF Jul 25, 10:20 UTCJul 25, 13:00 UTC2h 40m
2026-07-25 TOM5AY LGW → SUF Jul 25, 06:25 UTCJul 25, 09:00 UTC2h 35m
2026-07-25 TOM5AY LGW → SUF Jul 25, 06:05 UTCJul 25, 06:10 UTC5m
2026-07-24 TOM4503 - Jul 24, 22:55 UTCJul 24, 23:20 UTC25m
2026-07-24 TOM4502 LGW → ACE Jul 24, 14:30 UTCJul 24, 22:50 UTC8h 20m
2026-07-24 TOM4502 LGW → ACE Jul 24, 14:00 UTCJul 24, 14:10 UTC10m
2026-07-24 TOM60M ZTH → MAN Jul 24, 10:15 UTCJul 24, 12:25 UTC2h 10m
2026-07-24 TOM9ML LGW → SPU Jul 24, 06:35 UTCJul 24, 08:15 UTC1h 40m
2026-07-23 TOM39G MAN → MAN Jul 23, 22:00 UTCJul 24, 01:45 UTC3h 45m
2026-07-23 TOM4LX CFU → EXT Jul 23, 17:30 UTCJul 23, 20:50 UTC3h 20m
2026-07-23 TOM4MD MAN → DLM Jul 23, 12:55 UTCJul 23, 15:45 UTC2h 50m
2026-07-23 TOM4XJ SSH → BRS Jul 23, 08:40 UTCJul 23, 11:00 UTC2h 20m
2026-07-22 TOM6JL LGW → LGW Jul 22, 14:20 UTCJul 23, 03:05 UTC12h 45m
2026-07-22 TOM2YT XRY → LGW Jul 22, 11:10 UTCJul 22, 12:15 UTC1h 5m
2026-07-21 TOM7PC PMI → MAN Jul 21, 18:50 UTCJul 21, 23:05 UTC4h 15m
2026-07-21 TOM11K BHX → RHO Jul 21, 14:00 UTCJul 21, 17:25 UTC3h 25m
2026-07-21 TOM6MA RHO → BRS Jul 21, 09:05 UTCJul 21, 11:15 UTC2h 10m
2026-07-21 TOM49B MAN → SID Jul 21, 05:45 UTCJul 21, 07:40 UTC1h 55m
2026-07-20 TOM30W MAN → ACE Jul 20, 18:10 UTCJul 20, 20:15 UTC2h 5m
2026-07-20 TOM8GM - Jul 20, 14:25 UTCJul 20, 16:10 UTC1h 45m
2026-07-20 TOM491 NBE → LGW Jul 20, 09:55 UTCJul 20, 12:20 UTC2h 25m
2026-07-20 TOM490 LGW → NBE Jul 20, 04:55 UTCJul 20, 07:15 UTC2h 20m
2026-07-19 TOM5763 RHO → LGW Jul 19, 19:45 UTCJul 19, 23:40 UTC3h 55m
2026-07-19 TOM5762 LGW → RHO Jul 19, 15:00 UTCJul 19, 18:20 UTC3h 20m
2026-07-19 TOM9TJ REU → BRS Jul 19, 09:50 UTCJul 19, 13:15 UTC3h 25m
2026-07-19 TOM39E LGW → ALC Jul 19, 05:45 UTCJul 19, 08:30 UTC2h 45m
2026-07-18 TOM1VK IBZ → BHX Jul 18, 18:30 UTCJul 18, 22:10 UTC3h 40m
2026-07-18 TOM6PG ADB → MAN Jul 18, 13:05 UTCJul 18, 16:50 UTC3h 45m
2026-07-18 TOM5LT IBZ → LGW Jul 18, 08:50 UTCJul 18, 10:55 UTC2h 5m
2026-07-18 TOM71V ZTH → BHX Jul 18, 04:55 UTCJul 18, 06:45 UTC1h 50m
2026-07-17 TOM207 DLM → LGW Jul 17, 21:34 UTCJul 18, 01:25 UTC3h 50m
2026-07-17 TOM206 LGW → DLM Jul 17, 16:55 UTCJul 17, 20:20 UTC3h 25m
2026-07-17 TOM59G CFU → MAN Jul 17, 12:15 UTCJul 17, 15:15 UTC3h 0m
2026-07-17 TOM8AE LPA → BOH Jul 17, 07:00 UTCJul 17, 09:25 UTC2h 25m
2026-07-16 TOM6AH MLA → LGW Jul 16, 11:15 UTCJul 16, 14:10 UTC2h 55m
2026-07-16 TOM52H LGW → MLA Jul 16, 07:10 UTCJul 16, 09:45 UTC2h 35m
2026-07-15 TOM2VN MAH → LGW Jul 15, 20:30 UTCJul 15, 22:25 UTC1h 55m
2026-07-15 TOM7ET LGW → MAH Jul 15, 17:05 UTCJul 15, 18:55 UTC1h 50m
2026-07-15 TOM4HJ - Jul 15, 11:40 UTCJul 15, 15:05 UTC3h 25m
2026-07-15 TOM1WJ - Jul 15, 06:30 UTCJul 15, 10:25 UTC3h 55m
2026-07-14 TOM437 - Jul 14, 16:25 UTCJul 15, 00:25 UTC7h 59m
2026-07-14 TOM7PA - Jul 14, 12:45 UTCJul 14, 16:20 UTC3h 35m
2026-07-14 TOM6JX - Jul 14, 09:15 UTCJul 14, 10:50 UTC1h 35m
2026-07-14 TOM1KV - Jul 14, 05:50 UTCJul 14, 07:40 UTC1h 50m

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

Mode-S 40660E frequently asked

What is Mode-S code 40660E?
40660E is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-FDZZ.
Where is Mode-S 40660E registered?
Mode-S code 40660E 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 40660E broadcasting right now?
Yes. Mode-S 40660E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40660E, octal 20063016, decimal 4,220,430.
What flights does 40660E operate?
Mode-S 40660E has broadcast 20 distinct callsigns, including TOM493, TOM7YL, TOM7GC, TOM7CW, TOM613.