sensors Mode-S transponder

4D2351

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D2351
Octal
23221521
Decimal
5,055,313
Country
MT
Tail
9H-AMK
Type
A320
No current signal · last broadcast 14h ago
Flights observed
10
Distinct callsigns
7
Country
MT
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4D2351.

Country allocation

The ICAO 24-bit address 4D2351 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 7 distinct

Callsign Airline Flights Last seen
DAH3015 - 2 2026-04-13
DAH1022 Air Algerie 2 2026-04-13
DAH1021 - 2 2026-04-13
DAH3014 - 1 2026-04-13
DAH1023 - 1 2026-04-13
DAH1020 Air Algerie 1 2026-04-13
DAH1002 - 1 2026-04-14

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 DAH1002 - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-13 DAH3014 - Apr 13, 20:40 UTCApr 13, 22:35 UTC1h 55m
2026-04-13 DAH1021 - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 DAH1021 - Apr 13, 15:25 UTCApr 13, 16:15 UTC50m
2026-04-13 DAH1020 ALG → MRS Apr 13, 13:15 UTCApr 13, 14:10 UTC55m
2026-04-13 DAH1023 - Apr 13, 09:55 UTCApr 13, 10:45 UTC50m
2026-04-13 DAH1022 ALG → MRS Apr 13, 08:20 UTCApr 13, 08:45 UTC25m
2026-04-13 DAH1022 ALG → MRS Apr 13, 07:45 UTCApr 13, 08:15 UTC30m
2026-04-13 DAH3015 - Apr 13, 00:20 UTCApr 13, 02:20 UTC2h 0m
2026-04-13 DAH3015 - Apr 13, 00:10 UTCApr 13, 02:20 UTC2h 10m

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

Mode-S 4D2351 frequently asked

What is Mode-S code 4D2351?
4D2351 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-AMK.
Where is Mode-S 4D2351 registered?
Mode-S code 4D2351 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2351 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2351, octal 23221521, decimal 5,055,313.
What flights does 4D2351 operate?
Mode-S 4D2351 has broadcast 7 distinct callsigns, including DAH3015, DAH1022, DAH1021, DAH3014, DAH1023.