Apparatus

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sensors Mode-S transponder

4D23A3

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-MLU · AIRBUS A-320

Hex
4D23A3
Octal
23221643
Decimal
5,055,395
Country
MT
Tail
9H-MLU
Type
A320
No current signal · last broadcast 4d ago
Flights observed
179
Distinct callsigns
20
Country
MT
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 4D23A3.

Country allocation

The ICAO 24-bit address 4D23A3 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
EWG5B Eurowings 8 2026-06-08
EWG3NP Eurowings 8 2026-06-08
EWG9F Eurowings 4 2026-05-31
EWG8DM Eurowings 4 2026-06-05
EWG79A - 4 2026-06-05
EWG6SW - 4 2026-06-09
EWG59H Eurowings 4 2026-06-09
EWG4BN Eurowings 4 2026-05-31
EWG9A Eurowings 3 2026-06-03
EWG92K Eurowings 3 2026-06-12
EWG8QZ - 3 2026-06-03
EWG80V - 3 2026-06-06
EWG7NQ Eurowings 3 2026-06-07
EWG7HR Eurowings 3 2026-05-31
EWG70L Eurowings 3 2026-05-23
EWG6U Eurowings 3 2026-05-29
EWG6DM - 3 2026-06-08
EWG5PC - 3 2026-06-03
EWG5HF - 3 2026-06-06
EWG54J - 3 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 EWG3LU RHO → BER Jun 12, 18:05 UTCJun 12, 20:20 UTC2h 15m
2026-06-12 EWG92K DUS → PMI Jun 12, 14:50 UTCJun 12, 16:35 UTC1h 45m
2026-06-12 EWG11S PMI → DUS Jun 12, 11:35 UTCJun 12, 13:45 UTC2h 10m
2026-06-12 EWG47E DUS → PMI Jun 12, 08:20 UTCJun 12, 10:10 UTC1h 50m
2026-06-12 EWG3VL BER → OPO Jun 12, 06:30 UTCJun 12, 07:20 UTC50m
2026-06-12 EWG5MJ DUS → TIA Jun 12, 04:45 UTCJun 12, 05:35 UTC50m
2026-06-11 EWG78FF - Jun 11, 20:45 UTCJun 11, 21:00 UTC15m
2026-06-11 EWG78FF LYS → DUS Jun 11, 19:30 UTCJun 11, 20:40 UTC1h 10m
2026-06-11 EWG43N DUS → LYS Jun 11, 17:40 UTCJun 11, 18:45 UTC1h 5m
2026-06-11 EWG3JN MUC → HAM Jun 11, 14:35 UTCJun 11, 16:45 UTC2h 10m
2026-06-11 EWG5Q - Jun 11, 11:45 UTCJun 11, 13:25 UTC1h 40m
2026-06-11 EWG5HR PUY → DUS Jun 11, 07:00 UTCJun 11, 08:25 UTC1h 25m
2026-06-11 EWG4TA MXP → HAM Jun 11, 05:00 UTCJun 11, 06:15 UTC1h 15m
2026-06-10 EWG20H PMI → DUS Jun 10, 16:40 UTCJun 10, 18:55 UTC2h 15m
2026-06-10 EWG5LP DUS → PMI Jun 10, 13:25 UTCJun 10, 15:35 UTC2h 10m
2026-06-10 EWG4AX - Jun 10, 08:35 UTCJun 10, 10:25 UTC1h 50m
2026-06-10 EWG7ME DUS → ZRH Jun 10, 05:05 UTCJun 10, 06:50 UTC1h 45m
2026-06-09 EWG4XC DUS → PRG Jun 9, 20:15 UTCJun 9, 20:55 UTC40m
2026-06-09 EWG6SW - Jun 9, 13:25 UTCJun 9, 15:50 UTC2h 25m
2026-06-09 EWG59H FAO → CGN Jun 9, 10:15 UTCJun 9, 12:25 UTC2h 10m
2026-06-09 EWG9HK CGN → BRI Jun 9, 07:05 UTCJun 9, 08:40 UTC1h 35m
2026-06-09 EWG8ET - Jun 9, 04:20 UTCJun 9, 05:50 UTC1h 30m
2026-06-08 EWG1U CGN → CGN Jun 8, 18:20 UTCJun 8, 20:15 UTC1h 55m
2026-06-08 EWG18C - Jun 8, 15:15 UTCJun 8, 17:05 UTC1h 50m
2026-06-08 EWG6DM - Jun 8, 12:40 UTCJun 8, 14:15 UTC1h 35m
2026-06-08 EWG4UY - Jun 8, 09:45 UTCJun 8, 11:15 UTC1h 30m
2026-06-08 EWG3NP LPA → DUS Jun 8, 07:10 UTCJun 8, 08:40 UTC1h 30m
2026-06-08 EWG5B HER → BER Jun 8, 04:50 UTCJun 8, 06:15 UTC1h 25m
2026-06-07 EWG53G BER → CGN Jun 7, 19:35 UTCJun 7, 20:50 UTC1h 15m
2026-06-07 EWG7NQ DUS → VCE Jun 7, 17:20 UTCJun 7, 18:35 UTC1h 15m
2026-06-07 EWG51AV - Jun 7, 14:10 UTCJun 7, 16:20 UTC2h 10m
2026-06-07 EWG1CP - Jun 7, 11:45 UTCJun 7, 12:50 UTC1h 5m
2026-06-07 EWG31F - Jun 7, 08:40 UTCJun 7, 10:10 UTC1h 30m
2026-06-07 EWG9XQ DUS → PRN Jun 7, 05:30 UTCJun 7, 07:10 UTC1h 40m
2026-06-06 EWG3LU RHO → BER Jun 6, 18:35 UTCJun 6, 20:39 UTC2h 5m
2026-06-06 EWG92K DUS → PMI Jun 6, 14:59 UTCJun 6, 17:00 UTC2h 0m
2026-06-06 EWG5HF KGS → DUS Jun 6, 10:39 UTCJun 6, 13:49 UTC3h 10m
2026-06-06 EWG80V - Jun 6, 06:35 UTCJun 6, 09:30 UTC2h 55m
2026-06-05 EWG8DM HAM → PMI Jun 5, 18:25 UTCJun 5, 20:05 UTC1h 40m
2026-06-05 EWG79A - Jun 5, 15:35 UTCJun 5, 17:10 UTC1h 35m
2026-06-05 EWG8JK BIO → DUS Jun 5, 12:45 UTCJun 5, 14:20 UTC1h 35m
2026-06-05 EWG51TM DUS → BIO Jun 5, 09:55 UTCJun 5, 11:25 UTC1h 30m
2026-06-04 EWG8DM HAM → PMI Jun 4, 18:05 UTCJun 4, 19:45 UTC1h 40m
2026-06-04 EWG79A - Jun 4, 15:25 UTCJun 4, 17:00 UTC1h 35m
2026-06-04 EWG6SW IBZ → DUS Jun 4, 12:10 UTCJun 4, 14:10 UTC2h 0m
2026-06-04 EWG59H FAO → CGN Jun 4, 08:40 UTCJun 4, 11:05 UTC2h 25m
2026-06-03 EWG39J - Jun 3, 18:30 UTCJun 3, 19:45 UTC1h 15m
2026-06-03 EWG5PC - Jun 3, 16:25 UTCJun 3, 17:30 UTC1h 5m
2026-06-03 EWG8QZ BCN → DUS Jun 3, 13:20 UTCJun 3, 15:05 UTC1h 45m
2026-06-03 EWG9A MXP → HAM Jun 3, 10:15 UTCJun 3, 11:55 UTC1h 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-MLU page for operator, model, and routing details .

Mode-S 4D23A3 frequently asked

What is Mode-S code 4D23A3?
4D23A3 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-MLU.
Where is Mode-S 4D23A3 registered?
Mode-S code 4D23A3 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D23A3 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D23A3, octal 23221643, decimal 5,055,395.
What flights does 4D23A3 operate?
Mode-S 4D23A3 has broadcast 20 distinct callsigns, including EWG5B, EWG3NP, EWG9F, EWG8DM, EWG79A.