sensors Mode-S transponder

4D20A2

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-ISLA · EMBRAER EMB-135 Legacy

Hex
4D20A2
Octal
23220242
Decimal
5,054,626
Country
MT
Tail
9H-ISLA
Type
E35L
No current signal · last broadcast 21h ago
Flights observed
180
Distinct callsigns
20
Country
MT
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 4D20A2.

Country allocation

The ICAO 24-bit address 4D20A2 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
AXY934A - 3 2026-04-14
AXY526K - 3 2026-04-18
AXY253A - 3 2026-04-15
AXY975A - 2 2026-07-03
AXY878Y - 2 2026-04-13
AXY612S - 2 2026-05-27
AXY540N - 2 2026-07-13
AXY517F - 2 2026-04-17
AXY439U - 2 2026-07-04
AXY185M - 2 2026-04-18
AXY180X - 2 2026-04-16
AXY994S - 1 2026-04-12
AXY989T - 1 2026-06-15
AXY989G - 1 2026-06-24
AXY973W - 1 2026-06-06
AXY969U - 1 2026-04-23
AXY968E - 1 2026-05-03
AXY952Y - 1 2026-05-31
AXY952E - 1 2026-06-30
AXY951S - 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AXY426C - Jul 13, 18:30 UTCJul 13, 19:50 UTC1h 20m
2026-07-13 AXY540N - Jul 13, 14:10 UTCJul 13, 16:45 UTC2h 35m
2026-07-13 AXY540N STN → SOU Jul 13, 11:30 UTCJul 13, 12:05 UTC35m
2026-07-04 AXY439U ATH → STN Jul 4, 16:05 UTCJul 4, 19:40 UTC3h 35m
2026-07-04 AXY439U - Jul 4, 09:15 UTCJul 4, 13:55 UTC4h 40m
2026-07-03 AXY975A ATH → DWC Jul 3, 12:50 UTCJul 3, 17:20 UTC4h 30m
2026-07-03 AXY975A - Jul 3, 08:40 UTCJul 3, 11:40 UTC3h 0m
2026-07-02 AXY906N - Jul 2, 17:50 UTCJul 2, 19:45 UTC1h 55m
2026-07-02 AXY683Y - Jul 2, 13:55 UTCJul 2, 16:25 UTC2h 30m
2026-07-01 AXY606N - Jul 1, 16:50 UTCJul 1, 18:00 UTC1h 10m
2026-07-01 AXY180W - Jul 1, 11:45 UTCJul 1, 15:10 UTC3h 25m
2026-07-01 AXY182J LPL → DUB Jul 1, 08:05 UTCJul 1, 08:40 UTC35m
2026-06-30 AXY359H IBZ → LPL Jun 30, 14:35 UTCJun 30, 17:05 UTC2h 30m
2026-06-30 AXY952E - Jun 30, 12:05 UTCJun 30, 13:25 UTC1h 20m
2026-06-30 AXY275J - Jun 30, 09:30 UTCJun 30, 11:15 UTC1h 45m
2026-06-28 AXY586X - Jun 28, 14:30 UTCJun 28, 17:10 UTC2h 40m
2026-06-28 AXY505C - Jun 28, 10:10 UTCJun 28, 12:35 UTC2h 25m
2026-06-28 AXY547J - Jun 28, 08:50 UTCJun 28, 09:20 UTC30m
2026-06-27 AXY901H - Jun 27, 11:59 UTCJun 27, 14:14 UTC2h 15m
2026-06-27 AXY902T WRO → KGS Jun 27, 08:44 UTCJun 27, 11:14 UTC2h 30m
2026-06-26 AXY826H LBA → WRO Jun 26, 15:34 UTCJun 26, 17:29 UTC1h 55m
2026-06-26 AXY162P FAO → LBA Jun 26, 11:09 UTCJun 26, 13:45 UTC2h 35m
2026-06-25 AXY539G - Jun 25, 16:09 UTCJun 25, 17:20 UTC1h 10m
2026-06-25 AXY560T - Jun 25, 12:40 UTCJun 25, 14:50 UTC2h 10m
2026-06-25 AXY656P NCE → FAB Jun 25, 08:30 UTCJun 25, 10:04 UTC1h 35m
2026-06-24 AXY423C NHT → NCE Jun 24, 18:34 UTCJun 24, 20:14 UTC1h 40m
2026-06-24 AXY177G - Jun 24, 15:29 UTCJun 24, 17:34 UTC2h 5m
2026-06-24 AXY732B - Jun 24, 11:09 UTCJun 24, 12:04 UTC55m
2026-06-24 AXY989G - Jun 24, 08:20 UTCJun 24, 09:59 UTC1h 40m
2026-06-23 AXY202P - Jun 23, 15:24 UTCJun 23, 15:50 UTC25m
2026-06-23 AXY447V - Jun 23, 13:55 UTCJun 23, 14:29 UTC35m
2026-06-23 AXY778N - Jun 23, 09:09 UTCJun 23, 10:49 UTC1h 40m
2026-06-22 AXY108T - Jun 22, 14:19 UTCJun 22, 15:35 UTC1h 15m
2026-06-22 AXY168Y LTN → CEQ Jun 22, 09:49 UTCJun 22, 11:39 UTC1h 50m
2026-06-21 AXY256F - Jun 21, 09:20 UTCJun 21, 11:49 UTC2h 30m
2026-06-21 AXY305S - Jun 21, 06:04 UTCJun 21, 06:35 UTC30m
2026-06-20 AXY159E - Jun 20, 15:09 UTCJun 20, 15:24 UTC15m
2026-06-20 AXY486E - Jun 20, 13:34 UTCJun 20, 13:55 UTC20m
2026-06-20 AXY359U - Jun 20, 09:24 UTCJun 20, 11:54 UTC2h 30m
2026-06-20 AXY348G - Jun 20, 06:49 UTCJun 20, 07:14 UTC25m
2026-06-19 AXY305K LIN → LTN Jun 19, 20:04 UTCJun 19, 21:44 UTC1h 40m
2026-06-19 AXY123F - Jun 19, 16:34 UTCJun 19, 17:59 UTC1h 25m
2026-06-18 AXY252E - Jun 18, 21:25 UTCJun 19, 00:20 UTC2h 54m
2026-06-15 AXY234U - Jun 15, 19:55 UTCJun 15, 22:49 UTC2h 55m
2026-06-15 AXY989T - Jun 15, 14:15 UTCJun 15, 15:10 UTC55m
2026-06-15 AXY565G - Jun 15, 11:24 UTCJun 15, 13:20 UTC1h 55m
2026-06-15 AXY112E - Jun 15, 08:45 UTCJun 15, 10:24 UTC1h 40m
2026-06-14 AXY361H - Jun 14, 18:30 UTCJun 14, 20:10 UTC1h 40m
2026-06-14 AXY668V - Jun 14, 10:50 UTCJun 14, 11:35 UTC45m
2026-06-14 AXY746P - Jun 14, 06:10 UTCJun 14, 07:50 UTC1h 40m

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

Mode-S 4D20A2 frequently asked

What is Mode-S code 4D20A2?
4D20A2 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-ISLA.
Where is Mode-S 4D20A2 registered?
Mode-S code 4D20A2 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D20A2 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D20A2, octal 23220242, decimal 5,054,626.
What flights does 4D20A2 operate?
Mode-S 4D20A2 has broadcast 20 distinct callsigns, including AXY934A, AXY526K, AXY253A, AXY975A, AXY878Y.