Apparatus

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sensors Mode-S transponder

4D23E1

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-CAD · BOEING 767-300

Hex
4D23E1
Octal
23221741
Decimal
5,055,457
Country
MT
Tail
9H-CAD
Type
B763
No current signal · last broadcast 4d ago
Flights observed
174
Distinct callsigns
20
Country
MT
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 4D23E1.

Country allocation

The ICAO 24-bit address 4D23E1 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
CHZ212 - 20 2026-07-09
CHZ211 - 18 2026-07-09
ICL604 - 13 2026-07-11
CHZ4996 - 13 2026-06-27
CHZ2255 - 12 2026-05-29
CHZ2256 - 11 2026-05-30
CHZ4995 - 10 2026-06-27
CHZ610 - 8 2026-07-06
CHZ311 - 7 2026-07-11
CHZ312 - 6 2026-07-11
CHZ112 - 6 2026-07-06
CHZ111 - 6 2026-07-06
ICL853 - 5 2026-06-28
ICL601 - 5 2026-07-10
ICL607 CAL Cargo Air Lines 4 2026-06-14
ICL609 CAL Cargo Air Lines 3 2026-06-19
ICL608 - 3 2026-07-04
ICL605 CAL Cargo Air Lines 3 2026-05-28
CHZ606 - 3 2026-04-30
CHZ603 - 3 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CHZ601 TLV → HAJ Jul 13, 19:00 UTCJul 13, 23:10 UTC4h 10m
2026-07-13 CHZ600 - Jul 13, 12:40 UTCJul 13, 16:35 UTC3h 55m
2026-07-12 CHZ601 - Jul 12, 04:55 UTCJul 12, 09:10 UTC4h 15m
2026-07-11 CHZ312 - Jul 11, 22:05 UTCJul 12, 02:01 UTC3h 55m
2026-07-11 CHZ311 TLV → CDG Jul 11, 09:45 UTCJul 11, 14:10 UTC4h 25m
2026-07-11 ICL604 - Jul 11, 03:20 UTCJul 11, 07:15 UTC3h 55m
2026-07-10 ICL601 - Jul 10, 05:20 UTCJul 10, 09:40 UTC4h 20m
2026-07-09 CHZ212 CGN → TLV Jul 9, 23:15 UTCJul 10, 02:55 UTC3h 40m
2026-07-09 CHZ211 TLV → CGN Jul 9, 04:20 UTCJul 9, 08:35 UTC4h 15m
2026-07-08 CHZ212 CGN → TLV Jul 8, 22:00 UTCJul 9, 01:35 UTC3h 35m
2026-07-08 CHZ211 TLV → CGN Jul 8, 04:15 UTCJul 8, 08:40 UTC4h 25m
2026-07-07 CHZ212 CGN → TLV Jul 7, 22:10 UTCJul 8, 01:45 UTC3h 35m
2026-07-07 CHZ211 TLV → CGN Jul 7, 06:20 UTCJul 7, 10:35 UTC4h 15m
2026-07-06 CHZ112 CGN → TLV Jul 6, 22:50 UTCJul 7, 02:30 UTC3h 40m
2026-07-06 CHZ111 TLV → CGN Jul 6, 16:10 UTCJul 6, 20:30 UTC4h 20m
2026-07-06 CHZ610 MXP → TLV Jul 6, 10:00 UTCJul 6, 13:20 UTC3h 20m
2026-07-06 CHZ610 - Jul 6, 06:15 UTCJul 6, 07:15 UTC1h 0m
2026-07-05 CHZ603 - Jul 5, 05:00 UTCJul 5, 09:30 UTC4h 30m
2026-07-04 CHZ312 CDG → TLV Jul 4, 23:10 UTCJul 5, 03:00 UTC3h 50m
2026-07-04 CHZ311 - Jul 4, 11:00 UTCJul 4, 15:35 UTC4h 35m
2026-07-04 CHZ311 TLV → TLV Jul 4, 10:45 UTCJul 4, 10:50 UTC5m
2026-07-04 ICL608 - Jul 4, 03:10 UTCJul 4, 06:55 UTC3h 45m
2026-07-03 ICL601 - Jul 3, 04:45 UTCJul 3, 09:10 UTC4h 25m
2026-07-02 CHZ212 CGN → TLV Jul 2, 22:20 UTCJul 3, 02:05 UTC3h 45m
2026-07-02 CHZ211 TLV → CGN Jul 2, 03:55 UTCJul 2, 08:00 UTC4h 5m
2026-07-01 CHZ212 CGN → TLV Jul 1, 21:50 UTCJul 2, 01:50 UTC4h 0m
2026-07-01 CHZ211 TLV → CGN Jul 1, 04:25 UTCJul 1, 08:15 UTC3h 50m
2026-06-30 CHZ212 CGN → TLV Jun 30, 22:00 UTCJul 1, 01:55 UTC3h 55m
2026-06-30 CHZ211 TLV → CGN Jun 30, 05:15 UTCJun 30, 09:10 UTC3h 55m
2026-06-29 CHZ112 CGN → TLV Jun 29, 22:49 UTCJun 30, 02:50 UTC4h 1m
2026-06-29 CHZ111 TLV → CGN Jun 29, 14:34 UTCJun 29, 18:34 UTC4h 0m
2026-06-29 CHZ610 MXP → AMM Jun 29, 07:55 UTCJun 29, 11:20 UTC3h 25m
2026-06-29 CHZ610 - Jun 29, 04:25 UTCJun 29, 05:24 UTC1h 0m
2026-06-28 ICL853 - Jun 28, 05:15 UTCJun 28, 09:20 UTC4h 5m
2026-06-27 CHZ312 CDG → TLV Jun 27, 22:49 UTCJun 28, 03:00 UTC4h 10m
2026-06-27 CHZ4996 - Jun 27, 11:39 UTCJun 27, 18:39 UTC7h 0m
2026-06-27 CHZ4995 - Jun 27, 01:44 UTCJun 27, 09:09 UTC7h 25m
2026-06-26 CHZ4996 - Jun 26, 12:50 UTCJun 26, 20:00 UTC7h 10m
2026-06-26 CHZ4995 - Jun 26, 02:40 UTCJun 26, 10:10 UTC7h 30m
2026-06-25 CHZ4996 - Jun 25, 13:14 UTCJun 25, 20:25 UTC7h 10m
2026-06-25 CHZ4995 - Jun 25, 02:49 UTCJun 25, 10:15 UTC7h 25m
2026-06-24 CHZ4996 - Jun 24, 12:44 UTCJun 24, 20:05 UTC7h 20m
2026-06-24 CHZ4995 CDG → DWC Jun 24, 02:34 UTCJun 24, 09:55 UTC7h 20m
2026-06-23 CHZ4996 - Jun 23, 13:39 UTCJun 23, 20:59 UTC7h 20m
2026-06-23 CHZ4995 CDG → DWC Jun 23, 03:15 UTCJun 23, 10:35 UTC7h 20m
2026-06-22 CHZ4996 - Jun 22, 14:45 UTCJun 22, 22:10 UTC7h 25m
2026-06-22 CHZ4995 CDG → DWC Jun 22, 02:50 UTCJun 22, 10:10 UTC7h 20m
2026-06-21 CHZ4996 - Jun 21, 13:44 UTCJun 21, 20:54 UTC7h 10m
2026-06-21 CHZ4995 CDG → DWC Jun 21, 02:20 UTCJun 21, 09:40 UTC7h 20m
2026-06-20 CHZ311 TLV → CDG Jun 20, 10:49 UTCJun 20, 15:04 UTC4h 15m

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

Mode-S 4D23E1 frequently asked

What is Mode-S code 4D23E1?
4D23E1 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-CAD.
Where is Mode-S 4D23E1 registered?
Mode-S code 4D23E1 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D23E1 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D23E1, octal 23221741, decimal 5,055,457.
What flights does 4D23E1 operate?
Mode-S 4D23E1 has broadcast 20 distinct callsigns, including CHZ212, CHZ211, ICL604, CHZ4996, CHZ2255.