Apparatus

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sensors Mode-S transponder

407E56

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-ONEE · BOEING 747-400

Hex
407E56
Octal
20077126
Decimal
4,226,646
Country
GB
Tail
G-ONEE
Type
B744
No current signal · last broadcast 4d ago
Flights observed
95
Distinct callsigns
20
Country
GB
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 407E56.

Country allocation

The ICAO 24-bit address 407E56 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
HGO443 - 18 2026-07-02
HGO447 - 16 2026-07-09
HGO446 - 15 2026-06-29
HGO442 - 13 2026-07-06
HGO781 - 3 2026-04-13
HGO775 - 3 2026-06-27
HGO774 - 3 2026-06-26
HGO993 - 2 2026-05-19
HGO992 - 2 2026-05-19
HGO991 - 2 2026-05-18
HGO824 - 2 2026-06-05
HGO776 - 2 2026-04-13
447 - 2 2026-04-17
HGO945 - 1 2026-05-08
HGO944 - 1 2026-05-08
HGO939 One Air 1 2026-05-21
HGO938 One Air 1 2026-05-21
HGO880P - 1 2026-05-01
HGO880 - 1 2026-05-01
HGO879 - 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 HGO447 - Jul 9, 11:35 UTCJul 9, 16:35 UTC5h 0m
2026-07-06 HGO442 - Jul 6, 19:05 UTCJul 7, 02:05 UTC7h 0m
2026-07-02 HGO443 - Jul 2, 09:50 UTCJul 2, 14:55 UTC5h 5m
2026-07-01 HGO443 - Jul 1, 15:35 UTCJul 2, 14:55 UTC23h 20m
2026-07-01 HGO443 - Jul 1, 12:20 UTCJul 2, 11:05 UTC22h 45m
2026-07-01 HGO442 - Jul 1, 08:15 UTCJul 1, 15:35 UTC7h 20m
2026-06-30 HGO447 - Jun 30, 11:55 UTCJun 30, 13:00 UTC1h 5m
2026-06-29 HGO446 - Jun 29, 08:09 UTCJun 29, 11:29 UTC3h 20m
2026-06-28 HGO443 - Jun 28, 23:25 UTCJun 29, 04:14 UTC4h 50m
2026-06-28 HGO442 - Jun 28, 00:04 UTCJun 28, 23:29 UTC23h 25m
2026-06-27 HGO442 - Jun 27, 19:55 UTCJun 28, 00:30 UTC4h 35m
2026-06-27 HGO775 - Jun 27, 11:09 UTCJun 27, 16:10 UTC5h 0m
2026-06-27 HGO775 - Jun 27, 00:00 UTCJun 27, 00:20 UTC20m
2026-06-26 HGO774 - Jun 26, 07:39 UTCJun 26, 10:50 UTC3h 10m
2026-06-25 HGO443 - Jun 25, 18:04 UTCJun 25, 23:05 UTC5h 0m
2026-06-24 HGO443 - Jun 24, 19:34 UTCJun 25, 19:20 UTC23h 45m
2026-06-24 HGO442 - Jun 24, 17:34 UTCJun 24, 20:44 UTC3h 10m
2026-06-24 HGO447 - Jun 24, 08:30 UTCJun 24, 13:30 UTC5h 0m
2026-06-23 HGO447 - Jun 23, 11:45 UTCJun 24, 11:29 UTC23h 45m
2026-06-23 HGO447 - Jun 23, 09:34 UTCJun 24, 09:29 UTC23h 55m
2026-06-23 HGO446 - Jun 23, 07:15 UTCJun 23, 12:05 UTC4h 50m
2026-06-21 HGO447 - Jun 21, 08:35 UTCJun 21, 13:39 UTC5h 5m
2026-06-20 HGO447 - Jun 20, 09:34 UTCJun 21, 09:29 UTC23h 55m
2026-06-20 HGO446 - Jun 20, 07:00 UTCJun 20, 10:09 UTC3h 10m
2026-06-19 HGO443 - Jun 19, 22:24 UTCJun 20, 03:19 UTC4h 55m
2026-06-19 HGO443 - Jun 19, 00:34 UTCJun 19, 23:29 UTC22h 55m
2026-06-18 HGO442 - Jun 18, 17:30 UTCJun 19, 00:45 UTC7h 14m
2026-06-16 HGO446 EMA → EMA Jun 16, 07:30 UTCJun 16, 13:19 UTC5h 50m
2026-06-15 HGO443 - Jun 15, 20:20 UTCJun 16, 01:35 UTC5h 15m
2026-06-14 HGO442 - Jun 14, 14:05 UTCJun 14, 17:00 UTC2h 55m
2026-06-14 HGO447 - Jun 14, 03:00 UTCJun 14, 08:20 UTC5h 20m
2026-06-13 HGO447 - Jun 13, 04:10 UTCJun 14, 03:30 UTC23h 20m
2026-06-12 HGO446 - Jun 12, 21:00 UTCJun 13, 04:10 UTC7h 10m
2026-06-12 HGO443 - Jun 12, 10:10 UTCJun 12, 15:25 UTC5h 15m
2026-06-10 HGO442 - Jun 10, 16:55 UTCJun 10, 20:05 UTC3h 10m
2026-06-10 HGO447 - Jun 10, 07:25 UTCJun 10, 12:35 UTC5h 10m
2026-06-09 HGO447 - Jun 9, 14:10 UTCJun 10, 12:35 UTC22h 25m
2026-06-09 HGO447 - Jun 9, 11:50 UTCJun 10, 11:30 UTC23h 40m
2026-06-09 HGO446 - Jun 9, 09:35 UTCJun 10, 08:35 UTC23h 0m
2026-06-09 HGO446 - Jun 9, 07:35 UTCJun 10, 07:30 UTC23h 55m
2026-06-09 HGO446 - Jun 9, 07:00 UTCJun 9, 14:20 UTC7h 20m
2026-06-08 HGO443 - Jun 8, 13:15 UTCJun 8, 14:35 UTC1h 20m
2026-06-07 HGO825 - Jun 7, 02:40 UTCJun 7, 06:35 UTC3h 55m
2026-06-05 HGO824 - Jun 5, 00:25 UTCJun 5, 00:40 UTC15m
2026-06-04 HGO824 - Jun 4, 20:40 UTCJun 4, 20:55 UTC15m
2026-05-21 HGO939 SYD → HKG May 21, 22:45 UTCMay 22, 03:35 UTC4h 50m
2026-05-21 HGO938 HKG → SYD May 21, 14:45 UTCMay 21, 17:50 UTC3h 5m
2026-05-19 HGO772 PAE → EMA May 19, 23:30 UTCMay 20, 12:45 UTC13h 16m
2026-05-19 HGO993 - May 19, 14:25 UTCMay 19, 20:30 UTC6h 5m
2026-05-19 HGO993 SHJ → SHJ May 19, 13:10 UTCMay 19, 13:30 UTC20m

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

Mode-S 407E56 frequently asked

What is Mode-S code 407E56?
407E56 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-ONEE.
Where is Mode-S 407E56 registered?
Mode-S code 407E56 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 407E56 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 407E56, octal 20077126, decimal 4,226,646.
What flights does 407E56 operate?
Mode-S 407E56 has broadcast 20 distinct callsigns, including HGO443, HGO447, HGO446, HGO442, HGO781.