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 TOM6JX · 34,000 ft
Flights observed
278
Distinct callsigns
20
Country
GB
Last broadcast
5m ago

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
2026-07-14 TOM6JX - Jul 14, 09:15 UTCJul 14, 09:30 UTC15m
2026-07-14 TOM1KV - Jul 14, 05:50 UTCJul 14, 07:40 UTC1h 50m
2026-07-13 TOM1AB - Jul 13, 21:45 UTCJul 14, 02:25 UTC4h 40m
2026-07-13 TOM7XY MAN → LCA Jul 13, 15:55 UTCJul 13, 20:15 UTC4h 20m
2026-07-13 TOM7AN - Jul 13, 11:20 UTCJul 13, 13:55 UTC2h 35m
2026-07-13 TOM3FL - Jul 13, 07:30 UTCJul 13, 09:30 UTC2h 0m
2026-07-12 TOM9HD - Jul 12, 19:25 UTCJul 12, 22:55 UTC3h 30m
2026-07-12 TOM1FE - Jul 12, 15:15 UTCJul 12, 18:20 UTC3h 5m
2026-07-12 TOM6NK - Jul 12, 10:45 UTCJul 12, 13:50 UTC3h 5m
2026-07-12 TOM1WK - Jul 12, 06:10 UTCJul 12, 09:05 UTC2h 55m
2026-07-11 TOM585 AYT → MAN Jul 11, 21:50 UTCJul 12, 02:05 UTC4h 15m
2026-07-11 TOM584 MAN → AYT Jul 11, 16:15 UTCJul 11, 20:20 UTC4h 5m
2026-07-11 TOM1TM - Jul 11, 09:10 UTCJul 11, 11:25 UTC2h 15m
2026-07-11 TOM4KT - Jul 11, 05:15 UTCJul 11, 07:25 UTC2h 10m
2026-07-10 TOM9VE - Jul 10, 22:25 UTCJul 11, 03:05 UTC4h 40m
2026-07-10 TOM91T - Jul 10, 16:50 UTCJul 10, 21:00 UTC4h 10m
2026-07-10 TOM11D - Jul 10, 11:00 UTCJul 10, 14:55 UTC3h 55m
2026-07-10 TOM8LW - Jul 10, 05:55 UTCJul 10, 09:25 UTC3h 30m
2026-07-09 TOM3XY - Jul 9, 20:30 UTCJul 10, 00:10 UTC3h 40m
2026-07-09 TOM2EJ - Jul 9, 15:15 UTCJul 9, 19:05 UTC3h 50m
2026-07-09 TOM7EW SKG → MAN Jul 9, 10:20 UTCJul 9, 13:40 UTC3h 20m
2026-07-09 TOM8GN MAN → SKG Jul 9, 06:10 UTCJul 9, 09:00 UTC2h 50m
2026-07-08 TOM3CB - Jul 8, 22:20 UTCJul 9, 02:15 UTC3h 55m
2026-07-08 TOM32B - Jul 8, 17:30 UTCJul 8, 20:50 UTC3h 20m
2026-07-08 TOM926P LGW → MAN Jul 8, 13:15 UTCJul 8, 14:00 UTC45m
2026-07-08 TOM52B - Jul 8, 09:55 UTCJul 8, 11:35 UTC1h 40m
2026-07-08 TOM42M - Jul 8, 07:05 UTCJul 8, 08:40 UTC1h 35m
2026-07-08 TOM923P MAN → LGW Jul 8, 05:10 UTCJul 8, 05:50 UTC40m
2026-07-07 TOM921P - Jul 7, 17:00 UTCJul 7, 17:30 UTC30m
2026-07-06 TOM911P LGW → LTN Jul 6, 09:55 UTCJul 6, 10:25 UTC30m
2026-07-05 TOM4YC MAN → AYT Jul 5, 11:15 UTCJul 5, 14:30 UTC3h 15m
2026-07-05 TOM3LA MAN → IBZ Jul 5, 07:05 UTCJul 5, 09:50 UTC2h 45m
2026-07-04 TOM99A PMI → MAN Jul 4, 15:40 UTCJul 4, 17:30 UTC1h 50m
2026-07-04 TOM77X JSI → LTN Jul 4, 12:20 UTCJul 4, 13:45 UTC1h 25m
2026-07-04 TOM4AT NWI → PMI Jul 4, 08:55 UTCJul 4, 10:35 UTC1h 40m
2026-07-04 TOM8DW LPA → EMA Jul 4, 05:45 UTCJul 4, 07:05 UTC1h 20m
2026-07-03 TOM8YE SZG → GLA Jul 3, 12:10 UTCJul 3, 15:50 UTC3h 40m
2026-07-03 TOM6VA SPU → LGW Jul 3, 06:30 UTCJul 3, 09:50 UTC3h 20m
2026-07-02 TOM3AE - Jul 2, 11:55 UTCJul 2, 15:30 UTC3h 35m
2026-07-02 TOM5480 - Jul 2, 06:45 UTCJul 2, 10:05 UTC3h 20m
2026-07-01 TOM74K IBZ → CWL Jul 1, 19:05 UTCJul 1, 23:05 UTC4h 0m
2026-07-01 TOM6AE DUB → INN Jul 1, 14:00 UTCJul 1, 17:35 UTC3h 35m
2026-07-01 TOM23X - Jul 1, 09:30 UTCJul 1, 11:50 UTC2h 20m
2026-07-01 TOM3EW - Jul 1, 05:35 UTCJul 1, 07:20 UTC1h 45m
2026-06-30 TOM92W BRS → KGS Jun 30, 12:35 UTCJun 30, 15:40 UTC3h 5m
2026-06-30 TOM9YL LGW → ZTH Jun 30, 06:35 UTCJun 30, 09:40 UTC3h 5m
2026-06-29 TOM5175 - Jun 29, 20:04 UTCJun 29, 23:44 UTC3h 40m
2026-06-29 TOM5174 LGW → TFS Jun 29, 14:44 UTCJun 29, 18:19 UTC3h 35m
2026-06-29 TOM1GY NCL → PMI Jun 29, 10:24 UTCJun 29, 13:00 UTC2h 35m
2026-06-29 TOM9NY LGW → CFU Jun 29, 05:34 UTCJun 29, 08:09 UTC2h 35m

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.