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 Jul 26, 21:45 UTC
Flights observed
541
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 21:45 UTC

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 - 13 2026-07-08
AEZ833J Aerial Transit Company 12 2026-06-26
AEZ29JD Aerial Transit Company 12 2026-06-26
AEZ20GR Aerial Transit Company 11 2026-07-21
AEZ157Q - 11 2026-07-07
AEZ155Z - 11 2026-07-08
AEZ835L Aerial Transit Company 10 2026-06-26
AEZ7814 - 10 2026-07-05
AEZ7117 - 10 2026-07-21
AEZ516C - 10 2026-07-08
AEZ389L - 10 2026-06-27
AEZ2616 - 10 2026-07-05
AEZ7815 Aerial Transit Company 9 2026-07-05
AEZ7813 - 9 2026-07-15
AEZ31TR - 9 2026-07-15
AEZ318W - 9 2026-07-15
AEZ158C Aerial Transit Company 9 2026-06-02
AEZ60RG Aerial Transit Company 8 2026-07-21
AEZ519C Aerial Transit Company 8 2026-06-02
AEZ41ST - 8 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AEZ2367 LIN → CAG Jul 26, 20:45 UTCJul 26, 21:45 UTC1h 0m
2026-07-26 AEZ49KF CAG → LIN Jul 26, 18:40 UTCJul 26, 19:35 UTC55m
2026-07-26 AEZ11LJ FCO → CAG Jul 26, 16:45 UTCJul 26, 17:25 UTC40m
2026-07-26 AEZ500Q FCO → CAG Jul 26, 10:35 UTCJul 26, 13:00 UTC2h 25m
2026-07-26 AEZ217A AHO → FCO Jul 26, 08:15 UTCJul 26, 09:00 UTC45m
2026-07-26 AEZ122X - Jul 26, 06:35 UTCJul 26, 07:15 UTC40m
2026-07-25 AEZ41GR CAG → FCO Jul 25, 15:45 UTCJul 25, 16:20 UTC35m
2026-07-25 AEZ811Z - Jul 25, 13:25 UTCJul 25, 13:55 UTC30m
2026-07-25 AEZ11GR CAG → FCO Jul 25, 11:35 UTCJul 25, 12:15 UTC40m
2026-07-25 AEZ500Q FCO → CAG Jul 25, 09:40 UTCJul 25, 10:05 UTC25m
2026-07-25 AEZ40GR CAG → FCO Jul 25, 07:20 UTCJul 25, 07:55 UTC35m
2026-07-25 AEZ100N FCO → CAG Jul 25, 05:10 UTCJul 25, 05:45 UTC35m
2026-07-24 AEZ2348 - Jul 24, 20:00 UTCJul 24, 20:35 UTC35m
2026-07-24 AEZ2347 FCO → CAG Jul 24, 18:10 UTCJul 24, 18:40 UTC30m
2026-07-24 AEZ41GR CAG → FCO Jul 24, 15:55 UTCJul 24, 16:30 UTC35m
2026-07-24 AEZ811Z - Jul 24, 14:05 UTCJul 24, 14:35 UTC30m
2026-07-24 AEZ11GR CAG → FCO Jul 24, 11:30 UTCJul 24, 12:10 UTC40m
2026-07-24 AEZ500Q - Jul 24, 09:45 UTCJul 24, 10:10 UTC25m
2026-07-24 AEZ40GR - Jul 24, 07:15 UTCJul 24, 08:00 UTC45m
2026-07-24 AEZ100N FCO → CAG Jul 24, 05:25 UTCJul 24, 05:50 UTC25m
2026-07-23 AEZ70MH CAG → FCO Jul 23, 18:25 UTCJul 23, 19:00 UTC35m
2026-07-23 AEZ11LJ FCO → CAG Jul 23, 16:45 UTCJul 23, 17:25 UTC40m
2026-07-23 AEZ413P - Jul 23, 09:45 UTCJul 23, 10:50 UTC1h 5m
2026-07-23 AEZ141W - Jul 23, 08:05 UTCJul 23, 08:40 UTC35m
2026-07-23 AEZ419P PMO → FCO Jul 23, 05:25 UTCJul 23, 06:15 UTC50m
2026-07-22 AEZ146R - Jul 22, 19:40 UTCJul 22, 20:15 UTC35m
2026-07-22 AEZ418P - Jul 22, 17:35 UTCJul 22, 18:15 UTC40m
2026-07-22 AEZ145N - Jul 22, 14:05 UTCJul 22, 14:45 UTC40m
2026-07-21 AEZ146R - Jul 21, 19:45 UTCJul 21, 20:25 UTC40m
2026-07-21 AEZ418P - Jul 21, 17:15 UTCJul 21, 18:00 UTC45m
2026-07-21 AEZ145N - Jul 21, 14:05 UTCJul 21, 14:45 UTC40m
2026-07-21 AEZ60RG CAG → FCO Jul 21, 10:15 UTCJul 21, 10:50 UTC35m
2026-07-21 AEZ7117 - Jul 21, 08:35 UTCJul 21, 09:00 UTC25m
2026-07-21 AEZ20GR CAG → FCO Jul 21, 05:45 UTCJul 21, 06:40 UTC55m
2026-07-20 AEZ11LJ FCO → CAG Jul 20, 16:30 UTCJul 20, 17:05 UTC35m
2026-07-20 AEZ2424 - Jul 20, 11:35 UTCJul 20, 12:15 UTC40m
2026-07-20 AEZ2425 - Jul 20, 10:00 UTCJul 20, 10:40 UTC40m
2026-07-20 AEZ217A AHO → FCO Jul 20, 08:10 UTCJul 20, 08:55 UTC45m
2026-07-20 AEZ122X - Jul 20, 06:20 UTCJul 20, 07:00 UTC40m
2026-07-19 AEZ2348 - Jul 19, 19:50 UTCJul 19, 20:25 UTC35m
2026-07-19 AEZ2347 FCO → CAG Jul 19, 17:55 UTCJul 19, 18:20 UTC25m
2026-07-19 AEZ41GR CAG → FCO Jul 19, 15:50 UTCJul 19, 16:25 UTC35m
2026-07-19 AEZ811Z - Jul 19, 13:40 UTCJul 19, 14:15 UTC35m
2026-07-19 AEZ60RG - Jul 19, 09:50 UTCJul 19, 10:30 UTC40m
2026-07-19 AEZ7117 - Jul 19, 08:05 UTCJul 19, 08:30 UTC25m
2026-07-19 AEZ20GR - Jul 19, 05:45 UTCJul 19, 06:20 UTC35m
2026-07-18 AEZ8765 - Jul 18, 12:00 UTCJul 18, 13:05 UTC1h 5m
2026-07-18 AEZ41ST - Jul 18, 09:50 UTCJul 18, 10:45 UTC55m
2026-07-18 AEZ8662 - Jul 18, 07:30 UTCJul 18, 08:25 UTC55m
2026-07-18 AEZ94GL - Jul 18, 05:05 UTCJul 18, 06:05 UTC1h 0m

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 Jul 26, 21:45 UTC.
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, AEZ833J, AEZ29JD, AEZ20GR, AEZ157Q.