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 18h ago
Flights observed
66
Distinct callsigns
20
Country
MT
Last broadcast
18h 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
AXY942P - 1 2026-04-19
AXY932P - 1 2026-04-17
AXY923Y - 1 2026-05-19
AXY904V - 1 2026-04-21
AXY889X - 1 2026-04-16
AXY847M - 1 2026-04-22
AXY838N - 1 2026-05-01
AXY819P - 1 2026-04-22
AXY817G - 1 2026-05-06
AXY809V - 1 2026-04-22
AXY803M - 1 2026-05-04
AXY784S - 1 2026-04-21
AXY783U - 1 2026-04-25
AXY765R - 1 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AXY718E - May 29, 09:20 UTCMay 29, 16:40 UTC7h 20m
2026-05-28 AXY173J - May 28, 06:50 UTCMay 28, 10:15 UTC3h 25m
2026-05-27 AXY584N LIN → VLC May 27, 14:20 UTCMay 27, 15:55 UTC1h 35m
2026-05-26 AXY361P - May 26, 15:39 UTCMay 26, 16:40 UTC1h 0m
2026-05-26 AXY674C - May 26, 12:05 UTCMay 26, 14:09 UTC2h 5m
2026-05-26 AXY194J - May 26, 07:15 UTCMay 26, 10:10 UTC2h 55m
2026-05-25 AXY278P - May 25, 08:40 UTCMay 25, 12:20 UTC3h 40m
2026-05-24 AXY278P - May 24, 14:45 UTCMay 25, 12:20 UTC21h 35m
2026-05-22 AXY250C - May 22, 09:00 UTCMay 22, 10:35 UTC1h 35m
2026-05-19 AXY923Y - May 19, 17:15 UTCMay 19, 20:25 UTC3h 10m
2026-05-19 AXY396Y NCE → EMA May 19, 12:30 UTCMay 19, 14:20 UTC1h 50m
2026-05-18 AXY765R - May 18, 10:25 UTCMay 18, 11:55 UTC1h 30m
2026-05-15 AXY508S - May 15, 12:50 UTCMay 15, 15:20 UTC2h 29m
2026-05-13 AXY586A FAB → CIA May 13, 10:10 UTCMay 13, 12:10 UTC2h 0m
2026-05-12 AXY758J ATH → FAB May 12, 08:50 UTCMay 12, 12:50 UTC4h 0m
2026-05-11 AXY739Y - May 11, 13:10 UTCMay 11, 14:10 UTC1h 0m
2026-05-11 AXY453F - May 11, 08:30 UTCMay 11, 11:30 UTC3h 0m
2026-05-10 AXY440J - May 10, 15:19 UTCMay 10, 16:00 UTC40m
2026-05-10 AXY512X MAN → FAO May 10, 11:15 UTCMay 10, 14:04 UTC2h 50m
2026-05-09 AXY511M - May 9, 16:05 UTCMay 9, 16:35 UTC30m
2026-05-09 AXY160R - May 9, 13:35 UTCMay 9, 15:30 UTC1h 55m
2026-05-09 AXY464U - May 9, 11:10 UTCMay 9, 11:20 UTC10m
2026-05-08 AXY450A - May 8, 05:35 UTCMay 8, 09:04 UTC3h 30m
2026-05-07 AXY695C - May 7, 11:10 UTCMay 7, 11:55 UTC45m
2026-05-07 AY696V - May 7, 10:00 UTCMay 7, 10:35 UTC35m
2026-05-06 AXY426N - May 6, 18:20 UTCMay 6, 20:45 UTC2h 25m
2026-05-06 AXY817G - May 6, 15:30 UTCMay 6, 17:20 UTC1h 50m
2026-05-05 AXY421A - May 5, 14:25 UTCMay 5, 16:10 UTC1h 45m
2026-05-05 AXY292F - May 5, 11:10 UTCMay 5, 13:15 UTC2h 5m
2026-05-04 AXY640H - May 4, 13:45 UTCMay 4, 15:35 UTC1h 50m
2026-05-04 AXY803M - May 4, 10:40 UTCMay 4, 12:30 UTC1h 50m
2026-05-02 AXY111S - May 2, 13:40 UTCMay 2, 17:25 UTC3h 45m
2026-05-02 AXY357K - May 2, 07:35 UTCMay 2, 09:55 UTC2h 20m
2026-05-01 AXY838N - May 1, 13:55 UTCMay 1, 16:35 UTC2h 40m
2026-04-30 AXY661R - Apr 30, 11:25 UTCApr 30, 14:05 UTC2h 40m
2026-04-30 AXY582A - Apr 30, 06:10 UTCApr 30, 08:20 UTC2h 10m
2026-04-26 AXY403A - Apr 26, 11:10 UTCApr 26, 11:20 UTC10m
2026-04-25 AXY783U MAD → LTN Apr 25, 08:40 UTCApr 25, 10:35 UTC1h 55m
2026-04-24 AXY186X - Apr 24, 08:40 UTCApr 24, 10:25 UTC1h 45m
2026-04-24 AXY531S ZRH → LBG Apr 24, 06:15 UTCApr 24, 07:15 UTC1h 0m
2026-04-23 AXY758F - Apr 23, 15:00 UTCApr 23, 16:55 UTC1h 55m
2026-04-23 AXY381K - Apr 23, 12:10 UTCApr 23, 13:55 UTC1h 45m
2026-04-22 AXY809V - Apr 22, 14:10 UTCApr 22, 15:55 UTC1h 45m
2026-04-22 AXY819P - Apr 22, 09:50 UTCApr 22, 12:30 UTC2h 40m
2026-04-22 AXY847M - Apr 22, 08:10 UTCApr 22, 08:50 UTC40m
2026-04-21 AXY784S - Apr 21, 18:00 UTCApr 21, 20:15 UTC2h 15m
2026-04-21 AXY904V - Apr 21, 13:30 UTCApr 21, 16:01 UTC2h 30m
2026-04-19 AXY942P - Apr 19, 05:40 UTCApr 19, 07:25 UTC1h 45m
2026-04-18 AXY240V - Apr 18, 10:30 UTCApr 18, 12:30 UTC2h 0m
2026-04-18 AXY733E - Apr 18, 07:50 UTCApr 18, 08:30 UTC40m

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 18h 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.