Apparatus

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sensors Mode-S transponder

4D2051

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-JJC · BOMBARDIER CL-600 Challenger

Hex
4D2051
Octal
23220121
Decimal
5,054,545
Country
MT
Tail
9H-JJC
Type
CL60
No current signal · last broadcast Jul 26, 12:15 UTC
Flights observed
52
Distinct callsigns
1
Country
MT
Last broadcast
Jul 26, 12:15 UTC

Last known position

Most recent position reported by Mode-S 4D2051.

Country allocation

The ICAO 24-bit address 4D2051 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 1 distinct

Callsign Airline Flights Last seen
TEU5 - 52 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TEU5 IBZ → NCE Jul 26, 11:00 UTCJul 26, 12:10 UTC1h 10m
2026-07-26 TEU5 VLC → IBZ Jul 26, 06:45 UTCJul 26, 07:15 UTC30m
2026-07-19 TEU5 IBZ → VLC Jul 19, 20:25 UTCJul 19, 20:50 UTC25m
2026-07-19 TEU5 FLR → IBZ Jul 19, 17:35 UTCJul 19, 19:20 UTC1h 45m
2026-07-17 TEU5 - Jul 17, 11:45 UTCJul 17, 13:25 UTC1h 40m
2026-07-17 TEU5 IBZ → FAB Jul 17, 06:10 UTCJul 17, 08:10 UTC2h 0m
2026-07-16 TEU5 LTN → IBZ Jul 16, 22:40 UTCJul 17, 00:50 UTC2h 10m
2026-07-14 TEU5 IBZ → LTN Jul 14, 18:15 UTCJul 14, 20:15 UTC2h 0m
2026-07-14 TEU5 - Jul 14, 13:35 UTCJul 14, 15:40 UTC2h 5m
2026-07-04 TEU5 - Jul 4, 18:35 UTCJul 4, 19:40 UTC1h 5m
2026-07-04 TEU5 - Jul 4, 15:30 UTCJul 4, 17:15 UTC1h 45m
2026-07-04 TEU5 - Jul 4, 13:10 UTCJul 4, 13:45 UTC35m
2026-07-04 TEU5 - Jul 4, 10:15 UTCJul 4, 10:55 UTC40m
2026-07-04 TEU5 VLC → TLN Jul 4, 07:40 UTCJul 4, 08:40 UTC1h 0m
2026-06-28 TEU5 - Jun 28, 23:25 UTCJun 28, 23:44 UTC20m
2026-06-28 TEU5 - Jun 28, 19:59 UTCJun 28, 22:10 UTC2h 10m
2026-06-27 TEU5 - Jun 27, 02:55 UTCJun 27, 14:14 UTC11h 20m
2026-06-19 TEU5 - Jun 19, 16:09 UTCJun 20, 02:24 UTC10h 15m
2026-06-17 TEU5 GMP → HND Jun 17, 06:30 UTCJun 17, 08:25 UTC1h 55m
2026-06-16 TEU5 - Jun 16, 05:00 UTCJun 16, 05:25 UTC25m
2026-06-13 TEU5 - Jun 13, 16:45 UTCJun 13, 21:20 UTC4h 35m
2026-06-11 TEU5 BER → IBZ Jun 11, 09:05 UTCJun 11, 11:25 UTC2h 20m
2026-06-09 TEU5 - Jun 9, 08:30 UTCJun 9, 09:45 UTC1h 15m
2026-06-08 TEU5 - Jun 8, 21:50 UTCJun 8, 22:50 UTC1h 0m
2026-06-08 TEU5 - Jun 8, 05:50 UTCJun 8, 08:10 UTC2h 20m
2026-06-04 TEU5 BMA → BUD Jun 4, 11:20 UTCJun 4, 13:15 UTC1h 55m
2026-06-02 TEU5 - Jun 2, 08:40 UTCJun 2, 10:50 UTC2h 10m
2026-05-31 TEU5 - May 31, 16:40 UTCMay 31, 17:55 UTC1h 15m
2026-05-30 TEU5 BUD → BTS May 30, 10:45 UTCMay 30, 11:05 UTC20m
2026-05-30 TEU5 IBZ → BUD May 30, 06:50 UTCMay 30, 09:25 UTC2h 35m
2026-05-27 TEU5 - May 27, 22:40 UTCMay 28, 00:50 UTC2h 10m
2026-05-27 TEU5 - May 27, 15:30 UTCMay 27, 15:55 UTC25m
2026-05-27 TEU5 - May 27, 12:55 UTCMay 27, 14:40 UTC1h 45m
2026-05-25 TEU5 - May 25, 14:30 UTCMay 25, 16:35 UTC2h 5m
2026-05-25 TEU5 - May 25, 12:45 UTCMay 25, 13:25 UTC40m
2026-05-25 TEU5 IBZ → BQH May 25, 09:30 UTCMay 25, 11:35 UTC2h 5m
2026-05-22 TEU5 - May 22, 19:40 UTCMay 22, 21:05 UTC1h 25m
2026-05-22 TEU5 MXP → VIP May 22, 12:30 UTCMay 22, 13:00 UTC30m
2026-05-21 TEU5 - May 21, 22:35 UTCMay 22, 00:00 UTC1h 25m
2026-05-18 TEU5 IBZ → LTN May 18, 05:15 UTCMay 18, 07:35 UTC2h 20m
2026-05-16 TEU5 - May 16, 09:06 UTCMay 16, 11:05 UTC2h 0m
2026-05-15 TEU5 - May 15, 14:25 UTCMay 15, 16:00 UTC1h 34m
2026-05-13 TEU5 BQH → NCE May 13, 09:25 UTCMay 13, 11:00 UTC1h 35m
2026-04-27 TEU5 - Apr 27, 04:50 UTCApr 27, 06:55 UTC2h 5m
2026-04-25 TEU5 - Apr 25, 21:30 UTCApr 25, 23:30 UTC2h 0m
2026-04-21 TEU5 LIN → LTN Apr 21, 19:55 UTCApr 21, 21:30 UTC1h 35m
2026-04-21 TEU5 - Apr 21, 13:01 UTCApr 21, 13:35 UTC35m
2026-04-20 TEU5 - Apr 20, 09:00 UTCApr 20, 10:20 UTC1h 20m
2026-04-20 TEU5 - Apr 20, 06:00 UTCApr 20, 07:25 UTC1h 25m
2026-04-16 TEU5 - Apr 16, 17:15 UTCApr 16, 17:50 UTC35m

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

Mode-S 4D2051 frequently asked

What is Mode-S code 4D2051?
4D2051 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-JJC.
Where is Mode-S 4D2051 registered?
Mode-S code 4D2051 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2051 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2051, octal 23220121, decimal 5,054,545.
What flights does 4D2051 operate?
Mode-S 4D2051 has broadcast 1 distinct callsign, including TEU5.