Apparatus

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sensors Mode-S transponder

4D238B

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-LFX · EMBRAER EMB-550 Praetor 600

Hex
4D238B
Octal
23221613
Decimal
5,055,371
Country
MT
Tail
9H-LFX
Type
E550
No current signal · last broadcast 1d ago
Flights observed
216
Distinct callsigns
2
Country
MT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4D238B.

Country allocation

The ICAO 24-bit address 4D238B 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 2 distinct

Callsign Airline Flights Last seen
FJO66L - 215 2026-07-11
FJO53F - 1 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 FJO53F - Jul 12, 14:20 UTCJul 12, 14:50 UTC30m
2026-07-11 FJO66L - Jul 11, 10:40 UTCJul 11, 12:30 UTC1h 50m
2026-07-11 FJO66L - Jul 11, 08:40 UTCJul 11, 09:20 UTC40m
2026-07-11 FJO66L - Jul 11, 05:40 UTCJul 11, 07:35 UTC1h 55m
2026-07-10 FJO66L - Jul 10, 14:10 UTCJul 10, 15:05 UTC55m
2026-07-10 FJO66L - Jul 10, 09:05 UTCJul 10, 10:25 UTC1h 20m
2026-07-10 FJO66L - Jul 10, 07:05 UTCJul 10, 07:50 UTC45m
2026-07-09 FJO66L - Jul 9, 15:40 UTCJul 9, 16:05 UTC25m
2026-07-09 FJO66L - Jul 9, 12:40 UTCJul 9, 14:35 UTC1h 55m
2026-07-09 FJO66L LIN → OSL Jul 9, 08:50 UTCJul 9, 11:15 UTC2h 25m
2026-07-07 FJO66L - Jul 7, 17:40 UTCJul 7, 18:30 UTC50m
2026-07-07 FJO66L - Jul 7, 15:15 UTCJul 7, 17:05 UTC1h 50m
2026-07-07 FJO66L LTN → STN Jul 7, 12:30 UTCJul 7, 12:50 UTC20m
2026-07-06 FJO66L - Jul 6, 17:00 UTCJul 6, 20:35 UTC3h 35m
2026-07-06 FJO66L INN → JMK Jul 6, 13:55 UTCJul 6, 15:55 UTC2h 0m
2026-07-06 FJO66L - Jul 6, 10:25 UTCJul 6, 11:10 UTC45m
2026-07-05 FJO66L - Jul 5, 15:10 UTCJul 5, 15:45 UTC35m
2026-07-05 FJO66L - Jul 5, 12:25 UTCJul 5, 13:45 UTC1h 20m
2026-07-05 FJO66L - Jul 5, 09:15 UTCJul 5, 10:50 UTC1h 35m
2026-07-04 FJO66L - Jul 4, 14:05 UTCJul 4, 15:05 UTC1h 0m
2026-07-04 FJO66L BQH → NCE Jul 4, 11:40 UTCJul 4, 13:10 UTC1h 30m
2026-07-04 FJO66L - Jul 4, 07:25 UTCJul 4, 08:15 UTC50m
2026-07-03 FJO66L GVA → LBG Jul 3, 12:25 UTCJul 3, 13:10 UTC45m
2026-07-03 FJO66L - Jul 3, 08:55 UTCJul 3, 09:40 UTC45m
2026-07-03 FJO66L - Jul 3, 07:05 UTCJul 3, 07:55 UTC50m
2026-07-02 FJO66L - Jul 2, 20:35 UTCJul 2, 21:15 UTC40m
2026-07-02 FJO66L - Jul 2, 18:00 UTCJul 2, 19:00 UTC1h 0m
2026-07-02 FJO66L - Jul 2, 10:00 UTCJul 2, 17:00 UTC7h 0m
2026-07-02 FJO66L NCE → CEQ Jul 2, 07:00 UTCJul 2, 07:20 UTC20m
2026-07-01 FJO66L - Jul 1, 16:55 UTCJul 1, 18:25 UTC1h 30m
2026-07-01 FJO66L - Jul 1, 14:15 UTCJul 1, 14:40 UTC25m
2026-07-01 FJO66L - Jul 1, 10:50 UTCJul 1, 11:45 UTC55m
2026-07-01 FJO66L - Jul 1, 07:35 UTCJul 1, 09:05 UTC1h 30m
2026-06-30 FJO66L - Jun 30, 16:55 UTCJun 30, 17:50 UTC55m
2026-06-30 FJO66L - Jun 30, 14:55 UTCJun 30, 15:15 UTC20m
2026-06-30 FJO66L - Jun 30, 12:05 UTCJun 30, 13:10 UTC1h 5m
2026-06-30 FJO66L - Jun 30, 09:00 UTCJun 30, 09:45 UTC45m
2026-06-29 FJO66L - Jun 29, 08:44 UTCJun 29, 10:00 UTC1h 15m
2026-06-29 FJO66L LCY → BRN Jun 29, 06:14 UTCJun 29, 07:25 UTC1h 10m
2026-06-25 FJO66L - Jun 25, 13:14 UTCJun 25, 15:10 UTC1h 55m
2026-06-25 FJO66L - Jun 25, 10:50 UTCJun 25, 12:04 UTC1h 15m
2026-06-25 FJO66L - Jun 25, 08:45 UTCJun 25, 09:34 UTC50m
2026-06-24 FJO66L - Jun 24, 15:14 UTCJun 24, 16:29 UTC1h 15m
2026-06-24 FJO66L - Jun 24, 12:20 UTCJun 24, 13:30 UTC1h 10m
2026-06-24 FJO66L - Jun 24, 09:55 UTCJun 24, 11:09 UTC1h 15m
2026-06-24 FJO66L DUB → FAB Jun 24, 07:40 UTCJun 24, 08:30 UTC50m
2026-06-23 FJO66L - Jun 23, 15:50 UTCJun 23, 16:29 UTC40m
2026-06-23 FJO66L - Jun 23, 11:29 UTCJun 23, 13:59 UTC2h 30m
2026-06-23 FJO66L - Jun 23, 10:04 UTCJun 23, 10:24 UTC20m
2026-06-22 FJO66L - Jun 22, 15:10 UTCJun 22, 18:24 UTC3h 15m

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

Mode-S 4D238B frequently asked

What is Mode-S code 4D238B?
4D238B is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-LFX.
Where is Mode-S 4D238B registered?
Mode-S code 4D238B is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D238B broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D238B, octal 23221613, decimal 5,055,371.
What flights does 4D238B operate?
Mode-S 4D238B has broadcast 2 distinct callsigns, including FJO66L, FJO53F.