Apparatus

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sensors Mode-S transponder

4D239C

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D239C
Octal
23221634
Decimal
5,055,388
Country
MT
Tail
9H-CXF
Type
B738
Transponder active on ground
Flights observed
382
Distinct callsigns
20
Country
MT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4D239C.

Country allocation

The ICAO 24-bit address 4D239C 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
SEJ681 Spicejet 32 2026-05-27
SEJ630 Spicejet 27 2026-05-27
SEJ682 Spicejet 25 2026-05-27
SEJ631 Spicejet 23 2026-05-27
SEJ199 Spicejet 23 2026-05-07
CXI5RU - 22 2026-07-11
SEJ151 Spicejet 15 2026-05-29
SEJ683 Spicejet 14 2026-05-26
SEJ200 Spicejet 13 2026-05-07
SEJ674 Spicejet 12 2026-04-22
SEJ684 Spicejet 10 2026-05-26
SEJ903 Spicejet 9 2026-05-07
SEJ672 Spicejet 8 2026-04-22
SEJ152 Spicejet 8 2026-05-29
CXI7U - 8 2026-07-13
CXI6LE Shanxi Airlines 8 2026-07-10
CXI6B - 8 2026-07-13
CXI3H - 8 2026-07-12
SEJ902 Spicejet 7 2026-05-07
SEJ623 Spicejet 5 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CXI3A - Jul 14, 07:30 UTCJul 14, 09:00 UTC1h 30m
2026-07-14 CXI19GZ - Jul 14, 01:35 UTCJul 14, 05:45 UTC4h 10m
2026-07-13 CXI58QA - Jul 13, 19:40 UTCJul 13, 23:25 UTC3h 45m
2026-07-13 CXI2FA - Jul 13, 13:15 UTCJul 13, 17:35 UTC4h 20m
2026-07-13 CXI6B RHO → CGN Jul 13, 08:35 UTCJul 13, 11:50 UTC3h 15m
2026-07-13 CXI7U - Jul 13, 04:25 UTCJul 13, 07:15 UTC2h 50m
2026-07-12 CAI4AT - Jul 12, 18:45 UTCJul 13, 03:15 UTC8h 30m
2026-07-12 CXI3H - Jul 12, 06:15 UTCJul 12, 16:45 UTC10h 30m
2026-07-11 CAI6WD CGN → CGN Jul 11, 20:50 UTCJul 12, 05:05 UTC8h 15m
2026-07-11 CAI3SD - Jul 11, 15:35 UTCJul 11, 19:10 UTC3h 35m
2026-07-11 CAI9F - Jul 11, 10:55 UTCJul 11, 14:10 UTC3h 15m
2026-07-11 CXI5RU - Jul 11, 06:01 UTCJul 11, 09:00 UTC3h 0m
2026-07-11 CXI9GQ - Jul 11, 02:00 UTCJul 11, 04:40 UTC2h 40m
2026-07-10 CXI41BE HER → CGN Jul 10, 19:50 UTCJul 10, 22:45 UTC2h 55m
2026-07-10 CXI6LE CGN → HER Jul 10, 15:35 UTCJul 10, 18:10 UTC2h 35m
2026-07-10 CXI5CX - Jul 10, 10:10 UTCJul 10, 13:55 UTC3h 45m
2026-07-10 CXI2FA - Jul 10, 07:00 UTCJul 10, 08:05 UTC1h 5m
2026-07-10 CXI2FA - Jul 10, 04:05 UTCJul 10, 06:55 UTC2h 50m
2026-07-09 CXI3H CGN → CGN Jul 9, 13:15 UTCJul 9, 23:35 UTC10h 20m
2026-07-09 CAI3SD - Jul 9, 07:45 UTCJul 9, 11:20 UTC3h 35m
2026-07-09 CAI9F - Jul 9, 03:20 UTCJul 9, 06:15 UTC2h 55m
2026-07-08 CXI6B RHO → CGN Jul 8, 17:35 UTCJul 8, 21:05 UTC3h 30m
2026-07-08 CXI7U CGN → RHO Jul 8, 13:10 UTCJul 8, 16:00 UTC2h 50m
2026-07-08 CAI4M - Jul 8, 08:35 UTCJul 8, 11:40 UTC3h 5m
2026-07-08 CAI52ZW - Jul 8, 04:55 UTCJul 8, 07:15 UTC2h 20m
2026-07-07 CAI16LN CGN → CGN Jul 7, 18:30 UTCJul 8, 03:05 UTC8h 35m
2026-07-07 CXI3H CGN → CGN Jul 7, 06:20 UTCJul 7, 16:50 UTC10h 30m
2026-07-07 CAI6JU - Jul 7, 00:40 UTCJul 7, 03:45 UTC3h 5m
2026-07-06 CAI4A - Jul 6, 20:50 UTCJul 6, 23:20 UTC2h 30m
2026-07-06 CAI3SD - Jul 6, 15:45 UTCJul 6, 19:15 UTC3h 30m
2026-07-06 CAI9F - Jul 6, 11:05 UTCJul 6, 14:25 UTC3h 20m
2026-07-06 CXI5RU - Jul 6, 05:50 UTCJul 6, 08:55 UTC3h 5m
2026-07-06 CXI7W - Jul 6, 01:35 UTCJul 6, 04:10 UTC2h 35m
2026-07-05 CXI97EY - Jul 5, 17:30 UTCJul 5, 20:35 UTC3h 5m
2026-07-05 CXI6LE CGN → HER Jul 5, 13:05 UTCJul 5, 15:45 UTC2h 40m
2026-07-05 CXI6B RHO → CGN Jul 5, 06:45 UTCJul 5, 10:10 UTC3h 25m
2026-07-05 CXI7U CGN → RHO Jul 5, 02:25 UTCJul 5, 05:15 UTC2h 50m
2026-07-04 CXI2K HER → GRQ Jul 4, 19:50 UTCJul 4, 23:00 UTC3h 10m
2026-07-04 CXI6LE CGN → HER Jul 4, 15:40 UTCJul 4, 18:15 UTC2h 35m
2026-07-04 CAI12TC - Jul 4, 09:00 UTCJul 4, 12:10 UTC3h 10m
2026-07-04 CAI52ZW - Jul 4, 05:15 UTCJul 4, 07:40 UTC2h 25m
2026-07-04 CAI21JG - Jul 4, 00:55 UTCJul 4, 03:55 UTC3h 0m
2026-07-03 CAI4A - Jul 3, 21:10 UTCJul 3, 23:35 UTC2h 25m
2026-07-03 CXI6B RHO → CGN Jul 3, 15:15 UTCJul 3, 18:35 UTC3h 20m
2026-07-03 CXI7U CGN → RHO Jul 3, 10:55 UTCJul 3, 13:45 UTC2h 50m
2026-07-03 CXI5RU - Jul 3, 06:05 UTCJul 3, 09:10 UTC3h 5m
2026-07-03 CXI2D - Jul 3, 01:30 UTCJul 3, 04:10 UTC2h 40m
2026-07-02 CXI3H CGN → HRG Jul 2, 13:30 UTCJul 2, 23:55 UTC10h 25m
2026-07-02 CAI3SD - Jul 2, 08:15 UTCJul 2, 11:35 UTC3h 20m
2026-07-02 CAI9F - Jul 2, 03:10 UTCJul 2, 06:15 UTC3h 5m

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

Mode-S 4D239C frequently asked

What is Mode-S code 4D239C?
4D239C is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-CXF.
Where is Mode-S 4D239C registered?
Mode-S code 4D239C is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D239C broadcasting right now?
Mode-S 4D239C is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D239C, octal 23221634, decimal 5,055,388.
What flights does 4D239C operate?
Mode-S 4D239C has broadcast 20 distinct callsigns, including SEJ681, SEJ630, SEJ682, SEJ631, SEJ199.