Apparatus

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sensors Mode-S transponder

4D2042

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D2042
Octal
23220102
Decimal
5,054,530
Country
MT
Tail
9H-MDG
Type
B738
No current signal · last broadcast Jul 26, 22:05 UTC
Flights observed
602
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 22:05 UTC

Last known position

Most recent position reported by Mode-S 4D2042.

Country allocation

The ICAO 24-bit address 4D2042 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
AEZ389L Aerial Transit Company 17 2026-07-26
AEZ44LG - 16 2026-07-14
AEZ839Y - 15 2026-07-24
AEZ385Z - 15 2026-07-24
AEZ8094 - 14 2026-07-14
AEZ2363 Aerial Transit Company 14 2026-06-24
AEZ29JD Aerial Transit Company 13 2026-07-04
AEZ836S Aerial Transit Company 12 2026-07-26
AEZ835L Aerial Transit Company 12 2026-07-04
AEZ569P Aerial Transit Company 12 2026-07-25
AEZ2362 Aerial Transit Company 12 2026-06-21
AEZ146R - 12 2026-07-16
AEZ833J Aerial Transit Company 11 2026-07-04
AEZ514C - 11 2026-07-17
AEZ47LG - 11 2026-06-21
AEZ38TM Aerial Transit Company 11 2026-07-26
AEZ2617 Aerial Transit Company 11 2026-07-25
AEZ419P - 10 2026-07-17
AEZ155Z - 10 2026-07-17
AEZ131R Aerial Transit Company 10 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AEZ842V - Jul 26, 21:00 UTCJul 26, 22:05 UTC1h 5m
2026-07-26 AEZ2364 CAG → LIN Jul 26, 19:00 UTCJul 26, 20:00 UTC1h 0m
2026-07-26 AEZ69FS - Jul 26, 16:35 UTCJul 26, 17:40 UTC1h 5m
2026-07-26 AEZ75HH - Jul 26, 14:25 UTCJul 26, 15:35 UTC1h 10m
2026-07-26 AEZ8765 LIN → CAG Jul 26, 11:45 UTCJul 26, 12:35 UTC50m
2026-07-26 AEZ38TM OLB → LIN Jul 26, 09:50 UTCJul 26, 10:25 UTC35m
2026-07-26 AEZ836S LIN → OLB Jul 26, 07:40 UTCJul 26, 08:20 UTC40m
2026-07-26 AEZ389L OLB → LIN Jul 26, 05:10 UTCJul 26, 05:50 UTC40m
2026-07-25 AEZ2617 FCO → OLB Jul 25, 19:40 UTCJul 25, 20:05 UTC25m
2026-07-25 AEZ7816 OLB → FCO Jul 25, 17:50 UTCJul 25, 18:15 UTC25m
2026-07-25 AEZ569P FCO → OLB Jul 25, 15:50 UTCJul 25, 16:20 UTC30m
2026-07-25 AEZ311L OLB → FCO Jul 25, 14:10 UTCJul 25, 14:35 UTC25m
2026-07-25 AEZ131R FCO → OLB Jul 25, 11:50 UTCJul 25, 12:20 UTC30m
2026-07-25 AEZ7812 - Jul 25, 10:05 UTCJul 25, 10:25 UTC20m
2026-07-25 AEZ139V FCO → OLB Jul 25, 08:10 UTCJul 25, 08:35 UTC25m
2026-07-25 AEZ7810 OLB → FCO Jul 25, 05:15 UTCJul 25, 05:40 UTC25m
2026-07-24 AEZ839Y - Jul 24, 19:20 UTCJul 24, 20:10 UTC50m
2026-07-24 AEZ385Z - Jul 24, 17:25 UTCJul 24, 18:10 UTC45m
2026-07-24 AEZ2631 LIN → OLB Jul 24, 14:35 UTCJul 24, 15:20 UTC45m
2026-07-24 AEZ2630 - Jul 24, 12:30 UTCJul 24, 13:20 UTC50m
2026-07-24 AEZ2629 - Jul 24, 09:20 UTCJul 24, 10:10 UTC50m
2026-07-24 AEZ2628 OLB → LIN Jul 24, 07:15 UTCJul 24, 08:10 UTC55m
2026-07-23 AEZ839Y - Jul 23, 19:10 UTCJul 23, 19:50 UTC40m
2026-07-23 AEZ385Z OLB → LIN Jul 23, 17:15 UTCJul 23, 18:05 UTC50m
2026-07-23 AEZ2631 LIN → OLB Jul 23, 14:30 UTCJul 23, 15:15 UTC45m
2026-07-23 AEZ2630 - Jul 23, 12:15 UTCJul 23, 13:00 UTC45m
2026-07-23 AEZ2629 - Jul 23, 09:35 UTCJul 23, 10:20 UTC45m
2026-07-23 AEZ2628 OLB → LIN Jul 23, 07:35 UTCJul 23, 08:25 UTC50m
2026-07-22 AEZ2617 - Jul 22, 19:50 UTCJul 22, 20:15 UTC25m
2026-07-22 AEZ7816 OLB → FCO Jul 22, 17:55 UTCJul 22, 18:25 UTC30m
2026-07-22 AEZ569P - Jul 22, 15:50 UTCJul 22, 16:20 UTC30m
2026-07-22 AEZ311L OLB → FCO Jul 22, 14:00 UTCJul 22, 14:25 UTC25m
2026-07-22 AEZ131R FCO → OLB Jul 22, 11:40 UTCJul 22, 12:05 UTC25m
2026-07-22 AEZ389L OLB → LIN Jul 22, 05:15 UTCJul 22, 05:25 UTC10m
2026-07-21 AEZ839Y - Jul 21, 19:55 UTCJul 21, 20:50 UTC55m
2026-07-21 AEZ385Z - Jul 21, 18:05 UTCJul 21, 18:50 UTC45m
2026-07-21 AEZ569P - Jul 21, 16:05 UTCJul 21, 16:40 UTC35m
2026-07-21 AEZ311 - Jul 21, 14:20 UTCJul 21, 14:55 UTC35m
2026-07-21 AEZ7813 FCO → OLB Jul 21, 09:55 UTCJul 21, 10:35 UTC40m
2026-07-21 AEZ31TR - Jul 21, 07:50 UTCJul 21, 08:20 UTC30m
2026-07-21 AEZ7811 - Jul 21, 05:50 UTCJul 21, 06:25 UTC35m
2026-07-20 AEZ2616 - Jul 20, 20:00 UTCJul 20, 20:25 UTC25m
2026-07-20 AEZ7817 FCO → OLB Jul 20, 18:00 UTCJul 20, 18:40 UTC40m
2026-07-20 AEZ7814 - Jul 20, 15:50 UTCJul 20, 16:20 UTC30m
2026-07-20 AEZ7815 FCO → OLB Jul 20, 14:10 UTCJul 20, 14:45 UTC35m
2026-07-20 AEZ318W - Jul 20, 11:50 UTCJul 20, 12:25 UTC35m
2026-07-20 AEZ7813 FCO → OLB Jul 20, 10:00 UTCJul 20, 10:35 UTC35m
2026-07-20 AEZ31TR - Jul 20, 07:50 UTCJul 20, 08:20 UTC30m
2026-07-20 AEZ7811 - Jul 20, 05:55 UTCJul 20, 06:15 UTC20m
2026-07-19 AEZ2616 - Jul 19, 20:15 UTCJul 19, 20:40 UTC25m

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

Mode-S 4D2042 frequently asked

What is Mode-S code 4D2042?
4D2042 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-MDG.
Where is Mode-S 4D2042 registered?
Mode-S code 4D2042 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2042 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2042, octal 23220102, decimal 5,054,530.
What flights does 4D2042 operate?
Mode-S 4D2042 has broadcast 20 distinct callsigns, including AEZ389L, AEZ44LG, AEZ839Y, AEZ385Z, AEZ8094.