Apparatus

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sensors Mode-S transponder

4D201A

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D201A
Octal
23220032
Decimal
5,054,490
Country
MT
Tail
9H-GAE
Type
B738
No current signal · last broadcast 8h ago
Flights observed
166
Distinct callsigns
20
Country
MT
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 4D201A.

Country allocation

The ICAO 24-bit address 4D201A 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
AEZ514C Aerial Transit Company 8 2026-05-06
AEZ157Q Aerial Transit Company 8 2026-05-05
AEZ516C Aerial Transit Company 7 2026-05-06
AEZ158C Aerial Transit Company 7 2026-05-05
AEZ833J Aerial Transit Company 6 2026-05-27
AEZ519C Aerial Transit Company 6 2026-05-05
AEZ29JD Aerial Transit Company 6 2026-05-27
AEZ155Z Aerial Transit Company 6 2026-05-06
AEZ835L Aerial Transit Company 5 2026-05-27
AEZ38TM Aerial Transit Company 5 2026-05-28
AEZ839Y Aerial Transit Company 4 2026-05-27
AEZ836S Aerial Transit Company 4 2026-05-28
AEZ389L Aerial Transit Company 4 2026-05-28
AEZ385Z Aerial Transit Company 4 2026-05-27
AEZ2363 Aerial Transit Company 4 2026-05-29
AEZ2362 Aerial Transit Company 4 2026-05-29
AEZ20GR Aerial Transit Company 4 2026-04-25
AEZ49KF Aerial Transit Company 3 2026-04-24
AEZ2367 Aerial Transit Company 3 2026-04-24
AEZ2361 - 3 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AEZ2348 CAG → FCO May 29, 20:40 UTCMay 29, 21:30 UTC50m
2026-05-29 AEZ2363 LIN → CAG May 29, 18:40 UTCMay 29, 19:30 UTC50m
2026-05-29 AEZ2362 CAG → LIN May 29, 16:35 UTCMay 29, 17:40 UTC1h 5m
2026-05-29 AEZ811Z - May 29, 14:45 UTCMay 29, 15:10 UTC25m
2026-05-29 AEZ11GR CAG → FCO May 29, 12:35 UTCMay 29, 13:10 UTC35m
2026-05-29 AEZ2385 FLR → CAG May 29, 10:05 UTCMay 29, 10:45 UTC40m
2026-05-29 AEZ2384 CAG → FLR May 29, 08:10 UTCMay 29, 08:55 UTC45m
2026-05-28 AEZ2347 FCO → CAG May 28, 19:10 UTCMay 28, 19:40 UTC30m
2026-05-28 AEZ41GR CAG → FCO May 28, 17:15 UTCMay 28, 17:55 UTC40m
2026-05-28 AEZ12RG FCO → CAG May 28, 15:25 UTCMay 28, 15:55 UTC30m
2026-05-28 AEZ22LO CAG → FCO May 28, 13:35 UTCMay 28, 14:15 UTC40m
2026-05-28 AEZ8765 LIN → CAG May 28, 11:00 UTCMay 28, 11:55 UTC55m
2026-05-28 AEZ38TM OLB → LIN May 28, 09:00 UTCMay 28, 09:50 UTC50m
2026-05-28 AEZ836S LIN → OLB May 28, 07:05 UTCMay 28, 07:50 UTC45m
2026-05-28 AEZ389L OLB → LIN May 28, 05:05 UTCMay 28, 05:55 UTC50m
2026-05-27 AEZ839Y LIN → OLB May 27, 19:30 UTCMay 27, 20:10 UTC40m
2026-05-27 AEZ385Z OLB → LIN May 27, 17:30 UTCMay 27, 18:10 UTC40m
2026-05-27 AEZ833J LIN → OLB May 27, 15:35 UTCMay 27, 16:20 UTC45m
2026-05-27 AEZ29JD OLB → LIN May 27, 13:35 UTCMay 27, 14:20 UTC45m
2026-05-27 AEZ835L LIN → OLB May 27, 11:30 UTCMay 27, 12:10 UTC40m
2026-05-27 AEZ38TM OLB → LIN May 27, 09:15 UTCMay 27, 10:00 UTC45m
2026-05-27 AEZ836S LIN → OLB May 27, 07:25 UTCMay 27, 08:05 UTC40m
2026-05-27 AEZ389L OLB → LIN May 27, 05:14 UTCMay 27, 05:59 UTC45m
2026-05-26 AEZ839Y LIN → OLB May 26, 19:40 UTCMay 26, 20:24 UTC45m
2026-05-26 AEZ385Z OLB → LIN May 26, 17:44 UTCMay 26, 18:34 UTC50m
2026-05-26 AEZ833J LIN → OLB May 26, 15:45 UTCMay 26, 16:40 UTC55m
2026-05-26 AEZ29JD OLB → LIN May 26, 13:29 UTCMay 26, 14:14 UTC45m
2026-05-26 AEZ835L LIN → OLB May 26, 11:15 UTCMay 26, 12:05 UTC50m
2026-05-26 AEZ41ST CAG → LIN May 26, 08:50 UTCMay 26, 09:45 UTC55m
2026-05-26 AEZ300Z FCO → CAG May 26, 06:20 UTCMay 26, 06:44 UTC25m
2026-05-26 AEZ2330 CAG → FCO May 26, 04:15 UTCMay 26, 04:54 UTC40m
2026-05-25 AEZ2349 FCO → CAG May 25, 23:35 UTCMay 26, 00:00 UTC25m
2026-05-25 AEZ9817 NAP → GOA May 25, 18:45 UTCMay 25, 19:15 UTC30m
2026-05-07 WMT129 - May 7, 15:05 UTCMay 7, 15:15 UTC10m
2026-05-07 AEZ9332 OLB → CAG May 7, 13:00 UTCMay 7, 13:40 UTC40m
2026-05-07 AEZ31TR OLB → FCO May 7, 07:40 UTCMay 7, 08:15 UTC35m
2026-05-07 AEZ139V FCO → OLB May 7, 06:05 UTCMay 7, 06:25 UTC20m
2026-05-06 AEZ7814 OLB → FCO May 6, 14:35 UTCMay 6, 15:10 UTC35m
2026-05-06 AEZ569P FCO → OLB May 6, 12:50 UTCMay 6, 13:20 UTC30m
2026-05-06 AEZ514C CTA → FCO May 6, 09:55 UTCMay 6, 10:50 UTC55m
2026-05-06 AEZ155Z FCO → CTA May 6, 07:40 UTCMay 6, 08:35 UTC55m
2026-05-06 AEZ516C CTA → FCO May 6, 05:10 UTCMay 6, 06:05 UTC55m
2026-05-05 AEZ157Q FCO → CTA May 5, 19:40 UTCMay 5, 20:25 UTC45m
2026-05-05 AEZ519C CTA → FCO May 5, 17:30 UTCMay 5, 18:40 UTC1h 10m
2026-05-05 AEZ158C FCO → CTA May 5, 14:15 UTCMay 5, 15:05 UTC50m
2026-05-05 AEZ514C CTA → FCO May 5, 09:50 UTCMay 5, 10:50 UTC1h 0m
2026-05-05 AEZ155Z FCO → CTA May 5, 07:30 UTCMay 5, 08:20 UTC50m
2026-05-05 AEZ516C CTA → FCO May 5, 05:05 UTCMay 5, 06:10 UTC1h 5m
2026-05-04 AEZ157Q FCO → CTA May 4, 19:55 UTCMay 4, 20:40 UTC45m
2026-05-04 AEZ519C CTA → FCO May 4, 17:30 UTCMay 4, 18:35 UTC1h 6m

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

Mode-S 4D201A frequently asked

What is Mode-S code 4D201A?
4D201A is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-GAE.
Where is Mode-S 4D201A registered?
Mode-S code 4D201A is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D201A broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D201A, octal 23220032, decimal 5,054,490.
What flights does 4D201A operate?
Mode-S 4D201A has broadcast 20 distinct callsigns, including AEZ514C, AEZ157Q, AEZ516C, AEZ158C, AEZ833J.