Apparatus

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sensors Mode-S transponder

40823F

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-HLYM · AIRBUS A-321neo

Hex
40823F
Octal
20101077
Decimal
4,227,647
Country
GB
Tail
G-HLYM
Type
A21N
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
398
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 40823F.

Country allocation

The ICAO 24-bit address 40823F 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
EXS74DF Jet2.com 9 2026-07-24
EXS52GH Jet2.com 9 2026-07-24
EXS61RJ Jet2.com 8 2026-07-20
EXS9DJ Jet2.com 7 2026-07-22
EXS93G Jet2.com 7 2026-07-22
EXS6RY Jet2.com 7 2026-07-23
EXS4LX - 7 2026-07-20
EXS28PC Jet2.com 7 2026-07-23
EXS9WF Jet2.com 6 2026-06-12
EXS73D - 6 2026-06-18
EXS68P Jet2.com 6 2026-06-12
EXS58X Jet2.com 6 2026-06-16
EXS74H Jet2.com 5 2026-06-14
EXS39BG - 5 2026-07-15
EXS98UT Jet2.com 4 2026-07-26
EXS92SG Jet2.com 4 2026-07-19
EXS89GV - 4 2026-07-13
EXS87W Jet2.com 4 2026-06-15
EXS81C Jet2.com 4 2026-06-17
EXS7P Jet2.com 4 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EXS15QY STN → BJV Jul 26, 19:45 UTCJul 26, 21:45 UTC2h 0m
2026-07-26 EXS61AB RHO → BHX Jul 26, 14:15 UTCJul 26, 18:15 UTC4h 0m
2026-07-26 EXS54KM REU → MAN Jul 26, 10:30 UTCJul 26, 12:40 UTC2h 10m
2026-07-26 EXS98UT FCO → BHX Jul 26, 06:50 UTCJul 26, 08:35 UTC1h 45m
2026-07-25 EXS1QR BHX → PMI Jul 25, 22:00 UTCJul 26, 02:05 UTC4h 5m
2026-07-25 EXS1HG ZTH → BHX Jul 25, 16:45 UTCJul 25, 20:20 UTC3h 35m
2026-07-25 EXS48RZ LBA → AGP Jul 25, 11:05 UTCJul 25, 14:40 UTC3h 35m
2026-07-25 EXS1739 MAN → JSI Jul 25, 06:35 UTCJul 25, 09:40 UTC3h 5m
2026-07-24 EXS13EV BHX → GVA Jul 24, 22:20 UTCJul 25, 02:35 UTC4h 15m
2026-07-24 EXS72KD MAN → HER Jul 24, 17:10 UTCJul 24, 20:55 UTC3h 45m
2026-07-24 EXS74DF MAN → FUE Jul 24, 12:45 UTCJul 24, 15:10 UTC2h 25m
2026-07-24 EXS52GH MAN → CFU Jul 24, 08:25 UTCJul 24, 11:15 UTC2h 50m
2026-07-23 EXS6RY MAN → BUD Jul 23, 22:10 UTCJul 24, 01:30 UTC3h 20m
2026-07-23 EXS28PC MAN → PFO Jul 23, 16:40 UTCJul 23, 20:15 UTC3h 35m
2026-07-23 EXS35PE BHX → GNB Jul 23, 11:30 UTCJul 23, 14:50 UTC3h 20m
2026-07-23 EXS1HR BHX → ATH Jul 23, 06:50 UTCJul 23, 09:45 UTC2h 55m
2026-07-22 EXS9DJ BHX → FNC Jul 22, 22:05 UTCJul 23, 00:30 UTC2h 25m
2026-07-22 EXS93G AGP → BHX Jul 22, 18:30 UTCJul 22, 20:40 UTC2h 10m
2026-07-22 EXS3AD TFS → MAN Jul 22, 13:30 UTCJul 22, 17:00 UTC3h 30m
2026-07-22 EXS89CK EDI → FCO Jul 22, 10:20 UTCJul 22, 12:10 UTC1h 50m
2026-07-21 EXS95T INN → MAN Jul 21, 11:50 UTCJul 21, 16:15 UTC4h 25m
2026-07-21 EXS51KU MAN → INN Jul 21, 06:35 UTCJul 21, 10:35 UTC4h 0m
2026-07-20 EXS4LX - Jul 20, 23:05 UTCJul 21, 02:45 UTC3h 39m
2026-07-20 EXS61RJ LEI → BHX Jul 20, 17:30 UTCJul 20, 21:15 UTC3h 45m
2026-07-20 EXS74DF MAN → FUE Jul 20, 12:40 UTCJul 20, 15:25 UTC2h 45m
2026-07-20 EXS52GH MAN → CFU Jul 20, 07:10 UTCJul 20, 09:40 UTC2h 30m
2026-07-19 EXS87ET KGS → MAN Jul 19, 21:50 UTCJul 20, 01:45 UTC3h 55m
2026-07-19 EXS3BD MAN → KGS Jul 19, 16:40 UTCJul 19, 20:15 UTC3h 35m
2026-07-19 EXS92SG BHX → SPU Jul 19, 11:45 UTCJul 19, 14:45 UTC3h 0m
2026-07-19 EXS32VA MAN → DBV Jul 19, 07:40 UTCJul 19, 10:10 UTC2h 30m
2026-07-18 EXS4LX - Jul 18, 22:25 UTCJul 19, 02:05 UTC3h 40m
2026-07-18 EXS61RJ LEI → BHX Jul 18, 16:30 UTCJul 18, 20:25 UTC3h 55m
2026-07-18 EXS74DF - Jul 18, 12:15 UTCJul 18, 14:50 UTC2h 35m
2026-07-18 EXS52GH - Jul 18, 07:40 UTCJul 18, 10:20 UTC2h 40m
2026-07-17 EXS13EV BHX → GVA Jul 17, 22:20 UTCJul 18, 02:29 UTC4h 10m
2026-07-17 EXS72KD MAN → RHO Jul 17, 16:49 UTCJul 17, 20:35 UTC3h 45m
2026-07-17 EXS74DF - Jul 17, 12:10 UTCJul 17, 14:39 UTC2h 30m
2026-07-17 EXS52GH - Jul 17, 07:40 UTCJul 17, 10:20 UTC2h 40m
2026-07-16 EXS6RY - Jul 16, 21:50 UTCJul 17, 01:15 UTC3h 25m
2026-07-16 EXS28PC - Jul 16, 19:50 UTCJul 16, 20:05 UTC15m
2026-07-16 EXS28PC - Jul 16, 16:25 UTCJul 16, 19:35 UTC3h 10m
2026-07-16 EXS35PE MLA → MAN Jul 16, 10:29 UTCJul 16, 14:00 UTC3h 30m
2026-07-16 EXS1HR MAN → MLA Jul 16, 06:20 UTCJul 16, 09:15 UTC2h 55m
2026-07-15 EXS59WJ RHO → MAN Jul 15, 21:15 UTCJul 16, 01:25 UTC4h 10m
2026-07-15 EXS39BG MAN → RHO Jul 15, 15:30 UTCJul 15, 19:20 UTC3h 50m
2026-07-15 EXS3DQ - Jul 15, 10:00 UTCJul 15, 13:50 UTC3h 50m
2026-07-15 EXS8DF - Jul 15, 05:20 UTCJul 15, 08:35 UTC3h 15m
2026-07-14 EXS4SL AYT → MAN Jul 14, 21:20 UTCJul 15, 01:50 UTC4h 29m
2026-07-14 EXS33WE MAN → AYT Jul 14, 15:45 UTCJul 14, 19:45 UTC4h 0m
2026-07-14 EXS46RA - Jul 14, 10:05 UTCJul 14, 13:50 UTC3h 45m

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

Mode-S 40823F frequently asked

What is Mode-S code 40823F?
40823F is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-HLYM.
Where is Mode-S 40823F registered?
Mode-S code 40823F 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 40823F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 40823F, octal 20101077, decimal 4,227,647.
What flights does 40823F operate?
Mode-S 40823F has broadcast 20 distinct callsigns, including EXS74DF, EXS52GH, EXS61RJ, EXS9DJ, EXS93G.