Apparatus

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sensors Mode-S transponder

4D239A

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D239A
Octal
23221632
Decimal
5,055,386
Country
MT
Tail
9H-CXD
Type
B738
Broadcasting now · callsign CXI9X · 37,000 ft
Flights observed
515
Distinct callsigns
20
Country
MT
Last broadcast
13m ago

Current position

4D239A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4D239A 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
SEJ151 Spicejet 45 2026-06-25
SEJ199 - 37 2026-06-25
SEJ200 Spicejet 25 2026-06-13
SEJ152 Spicejet 25 2026-06-07
SEJ630 Spicejet 23 2026-05-29
SEJ905 Spicejet 20 2026-06-23
SEJ682 Spicejet 20 2026-05-29
SEJ623 - 19 2026-06-22
SEJ681 Spicejet 18 2026-05-29
SEJ906 Spicejet 17 2026-06-23
SEJ631 Spicejet 17 2026-05-29
SEJ683 Spicejet 15 2026-05-29
SEJ674 Spicejet 14 2026-04-21
SEJ150 - 14 2026-06-25
SEJ903 - 13 2026-06-25
SEJ209 Spicejet 13 2026-06-13
SEJ684 Spicejet 12 2026-05-28
SEJ622 - 12 2026-06-22
SEJ672 Spicejet 9 2026-04-21
CAI46NY - 9 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CXI9X CGN → RHO Jul 18, 01:15 UTCJul 18, 02:29 UTC1h 15m
2026-07-17 CXI7F - Jul 17, 21:00 UTCJul 18, 00:00 UTC3h 0m
2026-07-17 CXI81PZ - Jul 17, 16:55 UTCJul 17, 18:34 UTC1h 40m
2026-07-17 CXI7Q - Jul 17, 13:55 UTCJul 17, 16:00 UTC2h 5m
2026-07-17 CXI8T CGN → HER Jul 17, 09:35 UTCJul 17, 12:00 UTC2h 25m
2026-07-17 CXI8E NUE → NUE Jul 17, 04:39 UTCJul 17, 07:35 UTC2h 55m
2026-07-16 CXI9X CGN → RHO Jul 16, 23:35 UTCJul 17, 02:20 UTC2h 45m
2026-07-16 CXI7F - Jul 16, 19:10 UTCJul 16, 22:10 UTC3h 0m
2026-07-16 CXI9C - Jul 16, 14:10 UTCJul 16, 17:35 UTC3h 25m
2026-07-16 CXI8EE - Jul 16, 08:35 UTCJul 16, 12:44 UTC4h 10m
2026-07-16 CXI8A - Jul 16, 04:20 UTCJul 16, 07:00 UTC2h 40m
2026-07-15 CXI4HL - Jul 15, 17:15 UTCJul 15, 19:10 UTC1h 55m
2026-07-15 CXI6F - Jul 15, 13:55 UTCJul 15, 16:00 UTC2h 5m
2026-07-15 CAI44YC - Jul 15, 08:50 UTCJul 15, 12:15 UTC3h 25m
2026-07-15 CAI46NY - Jul 15, 04:15 UTCJul 15, 07:10 UTC2h 55m
2026-07-14 CXI65RE CFU → DUS Jul 14, 16:50 UTCJul 14, 19:10 UTC2h 20m
2026-07-14 CXI9N KGS → CGN Jul 14, 13:20 UTCJul 14, 15:10 UTC1h 50m
2026-07-14 CAI7QJ - Jul 14, 03:45 UTCJul 14, 06:55 UTC3h 10m
2026-07-13 CAI7KJ - Jul 13, 23:40 UTCJul 14, 02:05 UTC2h 25m
2026-07-13 CAI9MN - Jul 13, 18:40 UTCJul 13, 21:45 UTC3h 5m
2026-07-13 CAI14DA - Jul 13, 14:20 UTCJul 13, 16:45 UTC2h 25m
2026-07-13 CAI84SD AYT → DUS Jul 13, 08:50 UTCJul 13, 12:20 UTC3h 30m
2026-07-13 CAI46NY DUS → AYT Jul 13, 04:30 UTCJul 13, 07:35 UTC3h 5m
2026-07-12 CXI4HL - Jul 12, 17:40 UTCJul 12, 19:40 UTC2h 0m
2026-07-12 CXI6F - Jul 12, 13:55 UTCJul 12, 15:55 UTC2h 0m
2026-07-12 CAI77BD AYT → DUS Jul 12, 08:45 UTCJul 12, 12:20 UTC3h 35m
2026-07-12 CAI46NY - Jul 12, 04:25 UTCJul 12, 07:31 UTC3h 5m
2026-07-11 CXI2CL CFU → DUS Jul 11, 17:35 UTCJul 11, 19:55 UTC2h 20m
2026-07-11 CXI9N KGS → CGN Jul 11, 14:10 UTCJul 11, 16:20 UTC2h 10m
2026-07-11 CAI9GH BRU → AYT Jul 11, 08:45 UTCJul 11, 12:15 UTC3h 30m
2026-07-11 CAI46NY DUS → AYT Jul 11, 04:25 UTCJul 11, 07:25 UTC3h 0m
2026-07-10 CXI4HL - Jul 10, 17:40 UTCJul 10, 19:55 UTC2h 15m
2026-07-10 CXI6F - Jul 10, 14:20 UTCJul 10, 16:15 UTC1h 55m
2026-07-10 CAI5FQ AYT → DUS Jul 10, 09:05 UTCJul 10, 12:45 UTC3h 40m
2026-07-10 CAI46NY - Jul 10, 04:25 UTCJul 10, 07:25 UTC3h 0m
2026-07-09 CXI99TK - Jul 9, 17:55 UTCJul 9, 20:25 UTC2h 30m
2026-07-09 CXI9N KGS → CGN Jul 9, 14:15 UTCJul 9, 16:00 UTC1h 45m
2026-07-09 CAI44MR - Jul 9, 08:45 UTCJul 9, 12:25 UTC3h 40m
2026-07-09 CAI46NY - Jul 9, 04:25 UTCJul 9, 07:25 UTC3h 0m
2026-07-08 CXI4HL - Jul 8, 17:20 UTCJul 8, 19:30 UTC2h 10m
2026-07-08 CXI6F - Jul 8, 13:55 UTCJul 8, 15:45 UTC1h 50m
2026-07-08 CAI44YC AYT → DUS Jul 8, 08:50 UTCJul 8, 12:35 UTC3h 45m
2026-07-08 CAI46NY DUS → AYT Jul 8, 04:45 UTCJul 8, 07:40 UTC2h 55m
2026-07-07 CXI65RE CFU → DUS Jul 7, 16:45 UTCJul 7, 19:05 UTC2h 20m
2026-07-07 CXI9N KGS → CGN Jul 7, 13:20 UTCJul 7, 15:10 UTC1h 50m
2026-07-07 CAI7QJ - Jul 7, 03:15 UTCJul 7, 06:25 UTC3h 10m
2026-07-06 CAI7KJ - Jul 6, 23:15 UTCJul 7, 01:45 UTC2h 30m
2026-07-06 CAI9MN - Jul 6, 18:20 UTCJul 6, 21:30 UTC3h 10m
2026-07-06 CAI14DA - Jul 6, 14:20 UTCJul 6, 16:50 UTC2h 30m
2026-07-06 CAI84SD AYT → DUS Jul 6, 09:05 UTCJul 6, 12:45 UTC3h 40m

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

Mode-S 4D239A frequently asked

What is Mode-S code 4D239A?
4D239A is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-CXD.
Where is Mode-S 4D239A registered?
Mode-S code 4D239A is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D239A broadcasting right now?
Yes. Mode-S 4D239A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D239A, octal 23221632, decimal 5,055,386.
What flights does 4D239A operate?
Mode-S 4D239A has broadcast 20 distinct callsigns, including SEJ151, SEJ199, SEJ200, SEJ152, SEJ630.