Apparatus

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sensors Mode-S transponder

4D23A4

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D23A4
Octal
23221644
Decimal
5,055,396
Country
MT
Tail
9H-GKK
Type
A320
No current signal · last broadcast 1h ago
Flights observed
438
Distinct callsigns
20
Country
MT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4D23A4.

Country allocation

The ICAO 24-bit address 4D23A4 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
EWG31CD - 26 2026-07-10
EWG66L Eurowings 22 2026-07-23
EWG12JK - 20 2026-06-23
EWG59MG - 16 2026-07-02
EWG9UH - 14 2026-07-10
EWG68NA - 14 2026-07-19
EWG8UC - 13 2026-07-21
EWG3HE - 13 2026-07-12
EWG02JB - 13 2026-07-21
EWG7NY - 12 2026-07-21
EWG79EB - 12 2026-06-25
EWG78RE - 12 2026-07-12
EWG64RL - 10 2026-07-05
EWG3A Eurowings 10 2026-07-19
EWG22B - 9 2026-07-10
EWG14G - 9 2026-07-10
EWG93FL - 8 2026-07-15
EWG86GR - 8 2026-07-08
EWG6T Eurowings 8 2026-05-22
EWG63D - 8 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 EWG4FX STR → BUD Jul 24, 06:50 UTCJul 24, 07:00 UTC10m
2026-07-24 EWG4FX STR → BUD Jul 24, 04:45 UTCJul 24, 06:00 UTC1h 15m
2026-07-23 EWG2775 DUB → STR Jul 23, 19:35 UTCJul 23, 21:15 UTC1h 40m
2026-07-23 EWG2774 STR → DUB Jul 23, 16:30 UTCJul 23, 18:25 UTC1h 55m
2026-07-23 EWG66L STR → LIS Jul 23, 12:40 UTCJul 23, 15:05 UTC2h 25m
2026-07-23 EWG66L STR → LIS Jul 23, 08:35 UTCJul 23, 11:20 UTC2h 45m
2026-07-23 EWG56R - Jul 23, 06:10 UTCJul 23, 07:00 UTC50m
2026-07-23 EWG56R STR → HAM Jul 23, 04:25 UTCJul 23, 05:20 UTC55m
2026-07-22 EWG55UW STR → STR Jul 22, 05:05 UTCJul 22, 11:55 UTC6h 50m
2026-07-21 EWG66L STR → LIS Jul 21, 17:50 UTCJul 21, 20:10 UTC2h 20m
2026-07-21 EWG66L STR → LIS Jul 21, 13:50 UTCJul 21, 16:35 UTC2h 45m
2026-07-21 EWG8UC - Jul 21, 11:05 UTCJul 21, 12:40 UTC1h 35m
2026-07-21 EWG02JB - Jul 21, 07:55 UTCJul 21, 09:45 UTC1h 50m
2026-07-21 EWG7NY MXP → STR Jul 21, 06:15 UTCJul 21, 07:00 UTC45m
2026-07-21 EWG7NY STR → MXP Jul 21, 04:25 UTCJul 21, 05:05 UTC40m
2026-07-20 EWG2801 PMO → STR Jul 20, 12:50 UTCJul 20, 14:40 UTC1h 50m
2026-07-20 EWG2800 STR → PMO Jul 20, 10:00 UTCJul 20, 11:45 UTC1h 45m
2026-07-20 EWG23Y BCN → STR Jul 20, 07:10 UTCJul 20, 08:45 UTC1h 35m
2026-07-20 EWG7J DUS → TFS Jul 20, 04:10 UTCJul 20, 05:40 UTC1h 30m
2026-07-19 EWG39KK - Jul 19, 20:15 UTCJul 19, 21:10 UTC55m
2026-07-19 EWG39KK - Jul 19, 18:05 UTCJul 19, 19:00 UTC55m
2026-07-19 EWG68NA - Jul 19, 13:40 UTCJul 19, 15:45 UTC2h 5m
2026-07-19 EWG68NA STR → SKG Jul 19, 10:55 UTCJul 19, 12:45 UTC1h 50m
2026-07-19 EWG3A HAM → CFU Jul 19, 08:15 UTCJul 19, 09:55 UTC1h 40m
2026-07-19 EWG3A HAM → CFU Jul 19, 04:35 UTCJul 19, 06:05 UTC1h 30m
2026-07-18 EWG7RU STR → RHO Jul 18, 15:50 UTCJul 18, 18:45 UTC2h 55m
2026-07-18 EWG7RU STR → RHO Jul 18, 11:45 UTCJul 18, 14:20 UTC2h 35m
2026-07-18 EWG3MS AGP → STR Jul 18, 07:55 UTCJul 18, 10:05 UTC2h 10m
2026-07-18 EWG37L GOT → DUS Jul 18, 04:05 UTCJul 18, 06:35 UTC2h 30m
2026-07-17 EWG68NA SKG → STR Jul 17, 19:20 UTCJul 17, 21:34 UTC2h 15m
2026-07-17 EWG68NA STR → SKG Jul 17, 16:34 UTCJul 17, 18:25 UTC1h 50m
2026-07-17 EWG78P VIE → STR Jul 17, 14:30 UTCJul 17, 15:35 UTC1h 5m
2026-07-17 EWG78P - Jul 17, 12:35 UTCJul 17, 13:25 UTC50m
2026-07-17 EWG55UW ATH → STR Jul 17, 09:04 UTCJul 17, 11:35 UTC2h 30m
2026-07-17 EWG55UW STR → ATH Jul 17, 05:15 UTCJul 17, 07:25 UTC2h 10m
2026-07-16 EWG33N - Jul 16, 14:35 UTCJul 16, 16:00 UTC1h 25m
2026-07-16 EWG33N - Jul 16, 09:55 UTCJul 16, 11:15 UTC1h 20m
2026-07-16 EWG2755 VIE → STR Jul 16, 06:40 UTCJul 16, 07:35 UTC55m
2026-07-16 EWG2754 STR → VIE Jul 16, 04:40 UTCJul 16, 05:35 UTC55m
2026-07-15 EWG6PR VIE → STR Jul 15, 19:55 UTCJul 15, 20:55 UTC1h 0m
2026-07-15 EWG6PR STR → VIE Jul 15, 17:45 UTCJul 15, 18:40 UTC55m
2026-07-15 EWG27UB - Jul 15, 14:10 UTCJul 15, 16:30 UTC2h 20m
2026-07-15 EWG27UB STR → BOJ Jul 15, 10:50 UTCJul 15, 13:00 UTC2h 10m
2026-07-15 EWG93FL OPO → STR Jul 15, 07:30 UTCJul 15, 09:35 UTC2h 5m
2026-07-15 EWG93FL STR → OPO Jul 15, 04:05 UTCJul 15, 06:35 UTC2h 30m
2026-07-14 EWG66L LIS → STR Jul 14, 18:15 UTCJul 14, 20:30 UTC2h 15m
2026-07-14 EWG66L STR → LIS Jul 14, 13:50 UTCJul 14, 16:50 UTC3h 0m
2026-07-14 EWG8UC - Jul 14, 11:00 UTCJul 14, 12:35 UTC1h 35m
2026-07-14 EWG02JB - Jul 14, 08:00 UTCJul 14, 09:35 UTC1h 35m
2026-07-14 EWG7NY - Jul 14, 06:50 UTCJul 14, 06:55 UTC5m

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

Mode-S 4D23A4 frequently asked

What is Mode-S code 4D23A4?
4D23A4 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-GKK.
Where is Mode-S 4D23A4 registered?
Mode-S code 4D23A4 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D23A4 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D23A4, octal 23221644, decimal 5,055,396.
What flights does 4D23A4 operate?
Mode-S 4D23A4 has broadcast 20 distinct callsigns, including EWG31CD, EWG66L, EWG12JK, EWG59MG, EWG9UH.