sensors Mode-S transponder

4D2158

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-PLM · CESSNA 650 Citation

Hex
4D2158
Octal
23220530
Decimal
5,054,808
Country
MT
Tail
9H-PLM
Type
C650
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
348
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 4D2158.

Country allocation

The ICAO 24-bit address 4D2158 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
ARU900 - 21 2026-07-05
ARU903 - 19 2026-07-05
ARU910 - 16 2026-07-03
ARU906 - 16 2026-07-06
ARU905 - 12 2026-07-06
ARU907 - 11 2026-07-06
ARU909 - 10 2026-07-03
ARU100 - 10 2026-07-02
ARU980 - 9 2026-06-27
ARU908 - 9 2026-06-30
TAR718 Tunisair 8 2026-04-29
TAR526 Tunisair 8 2026-05-03
ARU982 - 8 2026-07-04
ARU971 - 8 2026-06-25
ARU912 - 8 2026-07-01
ARU500 - 8 2026-07-08
ARU981 - 7 2026-07-04
ARU979 - 7 2026-06-27
ARU911 - 7 2026-07-01
TAR716 Tunisair 6 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CYF463 PRG → TLV Jul 26, 18:15 UTCJul 26, 21:35 UTC3h 20m
2026-07-26 CYF462 TLV → PRG Jul 26, 12:30 UTCJul 26, 16:30 UTC4h 0m
2026-07-26 BBG691 RHO → TLV Jul 26, 08:20 UTCJul 26, 09:35 UTC1h 15m
2026-07-26 BBG692 TLV → RHO Jul 26, 04:55 UTCJul 26, 06:15 UTC1h 20m
2026-07-25 BBG317 VIE → TLV Jul 25, 17:15 UTCJul 25, 20:05 UTC2h 50m
2026-07-25 BBG316 TLV → VIE Jul 25, 12:15 UTCJul 25, 15:50 UTC3h 35m
2026-07-25 CYF153 PFO → TLV Jul 25, 09:25 UTCJul 25, 10:05 UTC40m
2026-07-25 CYF152 TLV → PFO Jul 25, 07:25 UTCJul 25, 08:05 UTC40m
2026-07-24 BBG441 BUD → TLV Jul 24, 19:40 UTCJul 24, 22:20 UTC2h 40m
2026-07-24 BBG442 TLV → BUD Jul 24, 15:15 UTCJul 24, 18:10 UTC2h 55m
2026-07-24 CYF153 - Jul 24, 09:30 UTCJul 24, 10:10 UTC40m
2026-07-24 CYF152 TLV → PFO Jul 24, 07:40 UTCJul 24, 08:15 UTC35m
2026-07-23 BBG441 BUD → TLV Jul 23, 21:25 UTCJul 24, 00:10 UTC2h 45m
2026-07-23 BBG442 TLV → BUD Jul 23, 16:40 UTCJul 23, 19:45 UTC3h 5m
2026-07-23 BBG801 - Jul 23, 13:35 UTCJul 23, 14:55 UTC1h 20m
2026-07-23 BBG802 TLV → KGS Jul 23, 10:20 UTCJul 23, 11:45 UTC1h 25m
2026-07-22 BBG271 BER → TLV Jul 22, 14:50 UTCJul 22, 18:20 UTC3h 30m
2026-07-22 BBG272 - Jul 22, 10:20 UTCJul 22, 12:45 UTC2h 25m
2026-07-21 BBG565 BOJ → TLV Jul 21, 19:45 UTCJul 21, 21:40 UTC1h 55m
2026-07-21 BBG564 - Jul 21, 16:45 UTCJul 21, 18:40 UTC1h 55m
2026-07-21 BBG693 RHO → TLV Jul 21, 13:15 UTCJul 21, 14:25 UTC1h 10m
2026-07-21 BBG694 TLV → RHO Jul 21, 10:35 UTCJul 21, 11:45 UTC1h 10m
2026-07-20 BBG563 - Jul 20, 22:00 UTCJul 20, 23:45 UTC1h 45m
2026-07-20 BBG564 - Jul 20, 19:00 UTCJul 20, 20:55 UTC1h 55m
2026-07-20 BBG693 RHO → TLV Jul 20, 16:15 UTCJul 20, 17:20 UTC1h 5m
2026-07-20 BBG694 TLV → RHO Jul 20, 13:50 UTCJul 20, 15:05 UTC1h 15m
2026-07-20 BBG691 RHO → TLV Jul 20, 10:45 UTCJul 20, 11:55 UTC1h 10m
2026-07-20 BBG692 TLV → RHO Jul 20, 08:00 UTCJul 20, 09:15 UTC1h 15m
2026-07-19 BBG705 ATH → TLV Jul 19, 15:45 UTCJul 19, 17:20 UTC1h 35m
2026-07-19 BBG706 ATH → TCP Jul 19, 07:25 UTCJul 19, 09:10 UTC1h 45m
2026-07-18 BBG253 BCN → TLV Jul 18, 15:20 UTCJul 18, 19:05 UTC3h 45m
2026-07-18 BBG252 TLV → BCN Jul 18, 08:25 UTCJul 18, 12:35 UTC4h 10m
2026-07-18 FJO646 - Jul 18, 07:10 UTCJul 18, 07:20 UTC10m
2026-07-17 BBG441 BUD → TLV Jul 17, 18:19 UTCJul 17, 21:05 UTC2h 45m
2026-07-17 BBG442 TLV → BUD Jul 17, 13:25 UTCJul 17, 16:34 UTC3h 10m
2026-07-17 CYF159 PFO → TLV Jul 17, 09:55 UTCJul 17, 10:35 UTC40m
2026-07-17 CYF158 - Jul 17, 07:44 UTCJul 17, 08:35 UTC50m
2026-07-16 CYF461 PRG → TLV Jul 16, 20:25 UTCJul 16, 23:35 UTC3h 10m
2026-07-16 CYF462 TLV → PRG Jul 16, 15:25 UTCJul 16, 19:14 UTC3h 50m
2026-07-16 BBG565 - Jul 16, 10:50 UTCJul 16, 12:40 UTC1h 50m
2026-07-16 BBG566 - Jul 16, 06:40 UTCJul 16, 08:40 UTC2h 0m
2026-07-15 BBG151 - Jul 15, 19:10 UTCJul 15, 22:30 UTC3h 20m
2026-07-15 BBG154 - Jul 15, 13:25 UTCJul 15, 16:30 UTC3h 5m
2026-07-15 BBG154 - Jul 15, 12:45 UTCJul 15, 13:20 UTC35m
2026-07-15 BBG761 CHQ → TLV Jul 15, 09:05 UTCJul 15, 10:35 UTC1h 30m
2026-07-15 BBG762 - Jul 15, 05:35 UTCJul 15, 07:05 UTC1h 30m
2026-07-14 BBG747 - Jul 14, 16:15 UTCJul 14, 17:25 UTC1h 10m
2026-07-14 BBG758 - Jul 14, 13:15 UTCJul 14, 14:20 UTC1h 5m
2026-07-13 BBG761 - Jul 13, 10:00 UTCJul 13, 11:30 UTC1h 30m
2026-07-13 BBG762 TLV → CHQ Jul 13, 06:25 UTCJul 13, 08:05 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-PLM page for operator, model, and routing details .

Mode-S 4D2158 frequently asked

What is Mode-S code 4D2158?
4D2158 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-PLM.
Where is Mode-S 4D2158 registered?
Mode-S code 4D2158 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2158 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2158, octal 23220530, decimal 5,054,808.
What flights does 4D2158 operate?
Mode-S 4D2158 has broadcast 20 distinct callsigns, including ARU900, ARU903, ARU910, ARU906, ARU905.