Apparatus

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sensors Mode-S transponder

4D2150

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-AMY · BOMBARDIER Regional Jet CRJ-200

Hex
4D2150
Octal
23220520
Decimal
5,054,800
Country
MT
Tail
9H-AMY
Type
CRJ2
No current signal · last broadcast 2d ago
Flights observed
144
Distinct callsigns
20
Country
MT
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 4D2150.

Country allocation

The ICAO 24-bit address 4D2150 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
AXY693W - 3 2026-04-15
AXY594V - 2 2026-04-15
AXY358V - 2 2026-04-16
AXY278P - 2 2026-05-25
AXY265S - 2 2026-04-17
AY696V - 1 2026-05-07
AXY998H - 1 2026-06-29
AXY996W - 1 2026-06-02
AXY982A - 1 2026-06-15
AXY970U - 1 2026-07-12
AXY942P - 1 2026-04-19
AXY934T - 1 2026-06-23
AXY932P - 1 2026-04-17
AXY929S - 1 2026-07-04
AXY928J - 1 2026-07-09
AXY923Y - 1 2026-05-19
AXY918S - 1 2026-07-06
AXY904V - 1 2026-04-21
AXY891F - 1 2026-06-07
AXY889X - 1 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 AXY970U - Jul 12, 16:15 UTCJul 12, 17:05 UTC50m
2026-07-12 AXY885J MAN → LBG Jul 12, 13:05 UTCJul 12, 14:05 UTC1h 0m
2026-07-12 AXY226K - Jul 12, 09:25 UTCJul 12, 12:10 UTC2h 45m
2026-07-11 AXY126L - Jul 11, 17:50 UTCJul 11, 18:50 UTC1h 0m
2026-07-11 AXY5040 RTM → IBZ Jul 11, 14:15 UTCJul 11, 16:30 UTC2h 15m
2026-07-10 AXY131T - Jul 10, 15:10 UTCJul 10, 17:05 UTC1h 55m
2026-07-10 AXY363X - Jul 10, 11:05 UTCJul 10, 13:30 UTC2h 25m
2026-07-10 AXY725A - Jul 10, 07:15 UTCJul 10, 09:35 UTC2h 20m
2026-07-09 AXY928J - Jul 9, 10:15 UTCJul 9, 12:35 UTC2h 20m
2026-07-08 AXY127H NCE → FAB Jul 8, 11:45 UTCJul 8, 13:20 UTC1h 35m
2026-07-07 AXY366N - Jul 7, 16:55 UTCJul 7, 18:10 UTC1h 15m
2026-07-07 AXY276G - Jul 7, 14:45 UTCJul 7, 15:55 UTC1h 10m
2026-07-07 AXY372R LTN → LBG Jul 7, 13:00 UTCJul 7, 14:00 UTC1h 0m
2026-07-07 AXY760U - Jul 7, 08:15 UTCJul 7, 10:30 UTC2h 15m
2026-07-06 AXY448T - Jul 6, 14:20 UTCJul 6, 16:20 UTC2h 0m
2026-07-06 AXY918S BCN → LTN Jul 6, 08:35 UTCJul 6, 10:35 UTC2h 0m
2026-07-06 AXY619H - Jul 6, 04:35 UTCJul 6, 07:00 UTC2h 25m
2026-07-06 AXY833F - Jul 6, 01:10 UTCJul 6, 02:50 UTC1h 40m
2026-07-04 AXY929S - Jul 4, 08:55 UTCJul 4, 12:20 UTC3h 25m
2026-07-04 AXY224R AMM → BCN Jul 4, 02:40 UTCJul 4, 06:35 UTC3h 55m
2026-06-29 AXY168V - Jun 29, 10:44 UTCJun 29, 14:39 UTC3h 55m
2026-06-29 AXY998H - Jun 29, 08:50 UTCJun 29, 09:50 UTC1h 0m
2026-06-28 AXY179N - Jun 28, 17:44 UTCJun 28, 20:04 UTC2h 20m
2026-06-28 AXY665A - Jun 28, 16:05 UTCJun 28, 16:14 UTC10m
2026-06-28 AXY248T - Jun 28, 13:49 UTCJun 28, 14:25 UTC35m
2026-06-28 AXY601K - Jun 28, 11:25 UTCJun 28, 12:35 UTC1h 10m
2026-06-27 AXY226Y PRG → AYT Jun 27, 08:14 UTCJun 27, 11:00 UTC2h 45m
2026-06-27 AXY578C HAM → PRG Jun 27, 06:05 UTCJun 27, 06:50 UTC45m
2026-06-26 AXY112J IBZ → HAM Jun 26, 14:29 UTCJun 26, 17:04 UTC2h 35m
2026-06-26 AXY176A NCE → IBZ Jun 26, 12:10 UTCJun 26, 13:24 UTC1h 15m
2026-06-26 AXY329A IBZ → NCE Jun 26, 08:10 UTCJun 26, 09:30 UTC1h 20m
2026-06-23 AXY206C - Jun 23, 15:09 UTCJun 23, 15:55 UTC45m
2026-06-23 AXY674W - Jun 23, 11:59 UTCJun 23, 14:04 UTC2h 5m
2026-06-23 AXY934T - Jun 23, 08:25 UTCJun 23, 10:29 UTC2h 5m
2026-06-22 AXY560W TLN → LBG Jun 22, 14:29 UTCJun 22, 15:54 UTC1h 25m
2026-06-22 AXY336V - Jun 22, 10:19 UTCJun 22, 11:44 UTC1h 25m
2026-06-22 AXY140U - Jun 22, 08:10 UTCJun 22, 09:10 UTC1h 0m
2026-06-22 AXY682A - Jun 22, 06:15 UTCJun 22, 07:04 UTC50m
2026-06-21 AXY336K - Jun 21, 16:34 UTCJun 21, 18:50 UTC2h 15m
2026-06-21 AXY511N - Jun 21, 11:34 UTCJun 21, 13:50 UTC2h 15m
2026-06-20 AXY529A - Jun 20, 13:39 UTCJun 20, 15:49 UTC2h 10m
2026-06-19 AXY616W - Jun 19, 17:04 UTCJun 19, 17:39 UTC35m
2026-06-19 AXY715E - Jun 19, 12:54 UTCJun 19, 15:34 UTC2h 40m
2026-06-19 AXY688K - Jun 19, 08:44 UTCJun 19, 09:19 UTC35m
2026-06-18 AXY262N - Jun 18, 10:00 UTCJun 18, 12:30 UTC2h 30m
2026-06-17 AXY195T - Jun 17, 15:25 UTCJun 17, 16:30 UTC1h 5m
2026-06-17 AXY441P MAD → IBZ Jun 17, 13:25 UTCJun 17, 14:10 UTC45m
2026-06-17 AXY817P - Jun 17, 09:05 UTCJun 17, 10:25 UTC1h 20m
2026-06-15 AXY177J - Jun 15, 22:00 UTCJun 16, 00:15 UTC2h 15m
2026-06-15 AXY3050 - Jun 15, 17:34 UTCJun 15, 20:54 UTC3h 20m

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

Mode-S 4D2150 frequently asked

What is Mode-S code 4D2150?
4D2150 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-AMY.
Where is Mode-S 4D2150 registered?
Mode-S code 4D2150 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2150 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2150, octal 23220520, decimal 5,054,800.
What flights does 4D2150 operate?
Mode-S 4D2150 has broadcast 20 distinct callsigns, including AXY693W, AXY594V, AXY358V, AXY278P, AXY265S.