Apparatus

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sensors Mode-S transponder

4D20E5

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-ZAZ · BOEING 737-400

Hex
4D20E5
Octal
23220345
Decimal
5,054,693
Country
MT
Tail
9H-ZAZ
Type
B734
No current signal · last broadcast 2h ago
Flights observed
198
Distinct callsigns
20
Country
MT
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4D20E5.

Country allocation

The ICAO 24-bit address 4D20E5 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
HAT3633 Air Taxi 5 2026-07-06
HAT3630 - 5 2026-07-06
HAT4741 Air Taxi 4 2026-07-04
HAT4740 - 4 2026-07-04
HAT4211 - 4 2026-07-04
HAT4210 - 4 2026-07-04
HAT3302 - 4 2026-07-04
HAT3301 Air Taxi 4 2026-07-04
HAT363P - 3 2026-06-22
HAT3632 - 3 2026-07-06
AEZ2031 - 3 2026-07-14
AEZ2030 - 3 2026-07-14
HAT668P - 2 2026-04-13
HAT6687 - 2 2026-04-13
HAT6533 - 2 2026-04-17
HAT6532 - 2 2026-04-15
HAT6363 - 2 2026-05-30
HAT634P - 2 2026-06-09
HAT626P - 2 2026-04-16
HAT5626 - 2 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AEZ2031 - Jul 14, 07:50 UTCJul 14, 08:50 UTC1h 0m
2026-07-14 AEZ2030 - Jul 14, 05:25 UTCJul 14, 06:40 UTC1h 15m
2026-07-13 AEZ2083 - Jul 13, 18:25 UTCJul 13, 19:55 UTC1h 30m
2026-07-13 AEZ2082 - Jul 13, 15:40 UTCJul 13, 17:00 UTC1h 20m
2026-07-13 AEZ2035 - Jul 13, 12:35 UTCJul 13, 13:35 UTC1h 0m
2026-07-13 AEZ2034 - Jul 13, 10:10 UTCJul 13, 11:25 UTC1h 15m
2026-07-13 AEZ2031 - Jul 13, 07:35 UTCJul 13, 08:40 UTC1h 5m
2026-07-13 AEZ2030 - Jul 13, 05:15 UTCJul 13, 06:25 UTC1h 10m
2026-07-12 AEZ2081 - Jul 12, 19:05 UTCJul 12, 20:30 UTC1h 25m
2026-07-12 AEZ2080 - Jul 12, 16:40 UTCJul 12, 18:10 UTC1h 30m
2026-07-12 AEZ2033 - Jul 12, 14:25 UTCJul 12, 15:25 UTC1h 0m
2026-07-12 AEZ2032 - Jul 12, 11:40 UTCJul 12, 13:01 UTC1h 20m
2026-07-12 AEZ2037 GOA → QSR Jul 12, 09:15 UTCJul 12, 10:15 UTC1h 0m
2026-07-12 AEZ2036 - Jul 12, 06:55 UTCJul 12, 07:55 UTC1h 0m
2026-07-11 AEZ2077 - Jul 11, 19:30 UTCJul 11, 21:00 UTC1h 30m
2026-07-11 AEZ2076 - Jul 11, 16:35 UTCJul 11, 18:10 UTC1h 35m
2026-07-11 AEZ2031 - Jul 11, 07:45 UTCJul 11, 08:50 UTC1h 5m
2026-07-11 AEZ2030 - Jul 11, 05:15 UTCJul 11, 06:20 UTC1h 5m
2026-07-10 AEZ2033 - Jul 10, 19:35 UTCJul 10, 20:40 UTC1h 5m
2026-07-10 AEZ2032 - Jul 10, 16:15 UTCJul 10, 17:20 UTC1h 5m
2026-07-10 AEZ2083 - Jul 10, 13:20 UTCJul 10, 14:40 UTC1h 20m
2026-07-10 AEZ2082 - Jul 10, 10:35 UTCJul 10, 12:00 UTC1h 25m
2026-07-10 AEZ2035 - Jul 10, 08:00 UTCJul 10, 09:00 UTC1h 0m
2026-07-10 AEZ2034 - Jul 10, 05:20 UTCJul 10, 06:30 UTC1h 10m
2026-07-09 AEZ9034 - Jul 9, 18:25 UTCJul 9, 19:50 UTC1h 25m
2026-07-08 HAT6031 - Jul 8, 09:45 UTCJul 8, 12:40 UTC2h 55m
2026-07-08 HAT6030 - Jul 8, 05:50 UTCJul 8, 08:25 UTC2h 35m
2026-07-07 HAT6023 SKG → BTS Jul 7, 17:00 UTCJul 7, 18:30 UTC1h 30m
2026-07-07 HAT6022 - Jul 7, 14:20 UTCJul 7, 15:45 UTC1h 25m
2026-07-07 HAT0800 - Jul 7, 12:10 UTCJul 7, 13:25 UTC1h 15m
2026-07-06 HAT3633 DJE → MXP Jul 6, 14:25 UTCJul 6, 16:10 UTC1h 45m
2026-07-06 HAT3632 - Jul 6, 11:55 UTCJul 6, 13:05 UTC1h 10m
2026-07-06 HAT3631 - Jul 6, 08:20 UTCJul 6, 09:35 UTC1h 15m
2026-07-06 HAT3630 - Jul 6, 05:15 UTCJul 6, 07:00 UTC1h 45m
2026-07-04 HAT3302 - Jul 4, 19:50 UTCJul 4, 20:35 UTC45m
2026-07-04 HAT4741 BGY → OLB Jul 4, 17:40 UTCJul 4, 18:30 UTC50m
2026-07-04 HAT4740 - Jul 4, 15:15 UTCJul 4, 16:05 UTC50m
2026-07-04 HAT3301 MXP → OLB Jul 4, 12:55 UTCJul 4, 13:55 UTC1h 0m
2026-07-04 HAT4211 LMP → MXP Jul 4, 09:15 UTCJul 4, 11:05 UTC1h 50m
2026-07-04 HAT4210 MXP → LMP Jul 4, 06:30 UTCJul 4, 08:10 UTC1h 40m
2026-06-29 HAT3633 DJE → MXP Jun 29, 15:00 UTCJun 29, 16:50 UTC1h 50m
2026-06-29 HAT3632 - Jun 29, 12:05 UTCJun 29, 13:09 UTC1h 5m
2026-06-29 HAT3631 - Jun 29, 08:39 UTCJun 29, 09:54 UTC1h 15m
2026-06-29 HAT3630 - Jun 29, 05:34 UTCJun 29, 07:25 UTC1h 50m
2026-06-27 HAT3302 OLB → MXP Jun 27, 20:29 UTCJun 27, 21:19 UTC50m
2026-06-27 HAT4741 BGY → OLB Jun 27, 18:15 UTCJun 27, 19:15 UTC1h 0m
2026-06-27 HAT4740 - Jun 27, 15:39 UTCJun 27, 16:24 UTC45m
2026-06-27 HAT3301 MXP → OLB Jun 27, 13:24 UTCJun 27, 14:25 UTC1h 0m
2026-06-27 HAT4211 - Jun 27, 09:00 UTCJun 27, 10:40 UTC1h 40m
2026-06-27 HAT4210 MXP → LMP Jun 27, 06:15 UTCJun 27, 07:59 UTC1h 45m

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

Mode-S 4D20E5 frequently asked

What is Mode-S code 4D20E5?
4D20E5 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-ZAZ.
Where is Mode-S 4D20E5 registered?
Mode-S code 4D20E5 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D20E5 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D20E5, octal 23220345, decimal 5,054,693.
What flights does 4D20E5 operate?
Mode-S 4D20E5 has broadcast 20 distinct callsigns, including HAT3633, HAT3630, HAT4741, HAT4740, HAT4211.