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sensors Mode-S transponder

4D239B

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-CXE · BOEING 737-800

Hex
4D239B
Octal
23221633
Decimal
5,055,387
Country
MT
Tail
9H-CXE
Type
B738
Broadcasting now · callsign CAI7L · 40,000 ft
Flights observed
340
Distinct callsigns
20
Country
MT
Last broadcast
1d ago

Current position

4D239B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4D239B falls within the block assigned to Malta (MT) by ICAO Annex 10, Volume III. Every aircraft registered in Malta 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
CXI5RU - 24 2026-06-07
CXI1P Shanxi Airlines 13 2026-07-24
CXI7U Shanxi Airlines 9 2026-06-05
CXI6B Shanxi Airlines 9 2026-06-05
CXI33MY Shanxi Airlines 9 2026-07-25
CXI2ZD Shanxi Airlines 9 2026-07-25
CXI9C Shanxi Airlines 8 2026-05-11
CXI4G - 8 2026-07-21
CXI19GZ Shanxi Airlines 8 2026-06-07
CXI8MM - 6 2026-07-14
CXI7PV Shanxi Airlines 6 2026-05-08
CXI84WD Shanxi Airlines 5 2026-07-24
CXI81UN Shanxi Airlines 5 2026-07-20
CXI7J Shanxi Airlines 5 2026-07-23
CXI558 Shanxi Airlines 5 2026-07-23
CXI557 Shanxi Airlines 5 2026-07-23
CXI2W Shanxi Airlines 5 2026-07-26
CXI26LQ - 5 2026-07-23
CXI9V Shanxi Airlines 4 2026-07-23
CXI9P - 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CXI98DQ PMI → NUE Jul 26, 20:30 UTCJul 26, 22:25 UTC1h 55m
2026-07-26 CXI6H BER → HRG Jul 26, 17:20 UTCJul 26, 19:05 UTC1h 45m
2026-07-26 CXI26MF - Jul 26, 12:15 UTCJul 26, 15:40 UTC3h 25m
2026-07-26 CXI2W DUS → RHO Jul 26, 06:05 UTCJul 26, 09:45 UTC3h 41m
2026-07-25 CAI3G AMS → AYT Jul 25, 21:10 UTCJul 26, 04:40 UTC7h 30m
2026-07-25 CXI11NX - Jul 25, 16:10 UTCJul 25, 17:55 UTC1h 45m
2026-07-25 CXI5QL NUE → PMI Jul 25, 12:25 UTCJul 25, 14:20 UTC1h 55m
2026-07-25 CXI2ZD CFU → NUE Jul 25, 09:15 UTCJul 25, 11:00 UTC1h 45m
2026-07-25 CXI33MY NUE → CFU Jul 25, 06:05 UTCJul 25, 07:30 UTC1h 25m
2026-07-24 CAI8N NUE → AYT Jul 24, 21:25 UTCJul 25, 05:00 UTC7h 35m
2026-07-24 CXI84WD LPA → NUE Jul 24, 16:40 UTCJul 24, 20:20 UTC3h 40m
2026-07-24 CXI96TY NUE → LPA Jul 24, 10:35 UTCJul 24, 14:40 UTC4h 5m
2026-07-24 CXI3T FUE → DUS Jul 24, 06:25 UTCJul 24, 09:15 UTC2h 50m
2026-07-24 CXI1P NUE → RHO Jul 24, 02:15 UTCJul 24, 05:20 UTC3h 5m
2026-07-23 CXI558 PMI → NUE Jul 23, 21:55 UTCJul 23, 23:50 UTC1h 55m
2026-07-23 CXI557 NUE → PMI Jul 23, 18:55 UTCJul 23, 20:30 UTC1h 35m
2026-07-23 CXI7J FUE → NUE Jul 23, 15:05 UTCJul 23, 17:50 UTC2h 45m
2026-07-23 CXI26LQ NUE → KGS Jul 23, 11:15 UTCJul 23, 13:40 UTC2h 25m
2026-07-23 CXI9V HER → NUE Jul 23, 05:10 UTCJul 23, 08:00 UTC2h 50m
2026-07-23 CXI3SY NUE → HER Jul 23, 01:30 UTCJul 23, 03:40 UTC2h 10m
2026-07-22 CXI2ZD - Jul 22, 15:05 UTCJul 22, 16:50 UTC1h 45m
2026-07-22 CXI33MY NUE → CFU Jul 22, 11:50 UTCJul 22, 13:25 UTC1h 35m
2026-07-22 CXI9P - Jul 22, 10:20 UTCJul 22, 11:25 UTC1h 5m
2026-07-22 CXI1P NUE → RHO Jul 22, 03:05 UTCJul 22, 05:25 UTC2h 20m
2026-07-21 CXI7DD - Jul 21, 20:40 UTCJul 21, 22:30 UTC1h 50m
2026-07-21 CXI3B - Jul 21, 17:20 UTCJul 21, 19:05 UTC1h 45m
2026-07-21 CXI4G - Jul 21, 06:15 UTCJul 21, 16:10 UTC9h 55m
2026-07-21 CAI7L CGN → AYT Jul 21, 01:55 UTCJul 21, 04:40 UTC2h 45m
2026-07-20 CAI8N - Jul 20, 21:10 UTCJul 20, 23:55 UTC2h 44m
2026-07-20 CXI81UN RHO → NUE Jul 20, 16:45 UTCJul 20, 19:30 UTC2h 45m
2026-07-20 CXI1P NUE → RHO Jul 20, 12:15 UTCJul 20, 14:55 UTC2h 40m
2026-07-20 CXI6MY KGS → NUE Jul 20, 06:35 UTCJul 20, 09:20 UTC2h 45m
2026-07-20 - NUE → KGS Jul 20, 02:50 UTCJul 20, 05:20 UTC2h 30m
2026-07-19 CXI98DQ PMI → NUE Jul 19, 21:05 UTCJul 19, 22:50 UTC1h 45m
2026-07-19 CXI6H BER → HRG Jul 19, 17:20 UTCJul 19, 19:15 UTC1h 55m
2026-07-19 CXI26MF - Jul 19, 12:00 UTCJul 19, 15:30 UTC3h 30m
2026-07-19 CXI2W DUS → RHO Jul 19, 06:10 UTCJul 19, 10:15 UTC4h 5m
2026-07-18 CAI3G AMS → AYT Jul 18, 21:20 UTCJul 19, 04:40 UTC7h 20m
2026-07-18 CXI11NX - Jul 18, 16:35 UTCJul 18, 18:20 UTC1h 45m
2026-07-18 CXI5QL NUE → PMI Jul 18, 13:15 UTCJul 18, 15:15 UTC2h 0m
2026-07-18 CXI2ZD - Jul 18, 10:15 UTCJul 18, 11:55 UTC1h 40m
2026-07-18 CXI33MY NUE → CFU Jul 18, 07:10 UTCJul 18, 08:40 UTC1h 30m
2026-07-18 CAI7L CGN → AYT Jul 18, 02:45 UTCJul 18, 05:30 UTC2h 46m
2026-07-17 CAI8N - Jul 17, 22:00 UTCJul 18, 00:39 UTC2h 40m
2026-07-17 CXI84WD LPA → NUE Jul 17, 17:35 UTCJul 17, 20:40 UTC3h 5m
2026-07-17 CXI84WD LPA → NUE Jul 17, 16:49 UTCJul 17, 17:30 UTC40m
2026-07-17 CXI96TY NUE → LPA Jul 17, 10:40 UTCJul 17, 14:55 UTC4h 15m
2026-07-17 CXI3T FUE → DUS Jul 17, 06:10 UTCJul 17, 09:04 UTC2h 55m
2026-07-17 CXI1P NUE → RHO Jul 17, 02:25 UTCJul 17, 04:54 UTC2h 30m
2026-07-16 CXI558 - Jul 16, 22:10 UTCJul 17, 00:04 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 9H-CXE page for operator, model, and routing details .

Mode-S 4D239B frequently asked

What is Mode-S code 4D239B?
4D239B is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-CXE.
Where is Mode-S 4D239B registered?
Mode-S code 4D239B is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D239B broadcasting right now?
Yes. Mode-S 4D239B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D239B, octal 23221633, decimal 5,055,387.
What flights does 4D239B operate?
Mode-S 4D239B has broadcast 20 distinct callsigns, including CXI5RU, CXI1P, CXI7U, CXI6B, CXI33MY.