Apparatus

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sensors Mode-S transponder

4D2198

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D2198
Octal
23220630
Decimal
5,054,872
Country
MT
Tail
9H-MPW
Type
B734
No current signal · last broadcast 3h ago
Flights observed
116
Distinct callsigns
20
Country
MT
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4D2198.

Country allocation

The ICAO 24-bit address 4D2198 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
HAT6070 - 4 2026-07-05
HAT6020 - 4 2026-07-07
HAT6010 - 4 2026-07-06
HAT6073 - 3 2026-07-05
HAT6072 - 3 2026-07-05
HAT6053 - 3 2026-07-03
HAT6052 - 3 2026-07-03
HAT6045 - 3 2026-07-02
HAT6042 - 3 2026-07-02
HAT6040 - 3 2026-07-02
HAT6032 - 3 2026-07-01
HAT6071 - 2 2026-07-05
HAT6063 - 2 2026-07-04
HAT6062 - 2 2026-07-04
HAT6060 - 2 2026-07-04
HAT6050 - 2 2026-07-03
HAT6044 - 2 2026-07-02
HAT6041 - 2 2026-07-02
HAT6033 - 2 2026-07-01
HAT6031 - 2 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-07 HAT0802 - Jul 7, 22:30 UTCJul 7, 23:00 UTC30m
2026-07-07 HAT6021 - Jul 7, 20:05 UTCJul 7, 21:35 UTC1h 30m
2026-07-07 HAT6020 BTS → SKG Jul 7, 06:10 UTCJul 7, 07:35 UTC1h 25m
2026-07-06 HAT6011 ZTH → BTS Jul 6, 08:55 UTCJul 6, 10:10 UTC1h 15m
2026-07-06 HAT6010 - Jul 6, 05:40 UTCJul 6, 06:50 UTC1h 10m
2026-07-05 HAT6073 - Jul 5, 17:25 UTCJul 5, 19:35 UTC2h 10m
2026-07-05 HAT6072 - Jul 5, 14:10 UTCJul 5, 16:05 UTC1h 55m
2026-07-05 HAT6071 - Jul 5, 10:35 UTCJul 5, 12:35 UTC2h 0m
2026-07-05 HAT6070 - Jul 5, 07:00 UTCJul 5, 08:55 UTC1h 55m
2026-07-04 HAT6063 - Jul 4, 14:10 UTCJul 4, 15:50 UTC1h 40m
2026-07-04 HAT6062 - Jul 4, 11:35 UTCJul 4, 12:55 UTC1h 20m
2026-07-04 HAT6061 - Jul 4, 08:45 UTCJul 4, 10:10 UTC1h 25m
2026-07-04 HAT6060 - Jul 4, 06:10 UTCJul 4, 07:30 UTC1h 20m
2026-07-03 HAT6053 - Jul 3, 15:45 UTCJul 3, 17:25 UTC1h 40m
2026-07-03 HAT6052 - Jul 3, 13:10 UTCJul 3, 14:40 UTC1h 30m
2026-07-03 HAT6051 AHO → BTS Jul 3, 09:45 UTCJul 3, 11:30 UTC1h 45m
2026-07-03 HAT6050 BTS → AHO Jul 3, 06:45 UTCJul 3, 08:20 UTC1h 35m
2026-07-02 HAT6045 - Jul 2, 21:10 UTCJul 2, 22:35 UTC1h 25m
2026-07-02 HAT6044 - Jul 2, 18:00 UTCJul 2, 19:45 UTC1h 45m
2026-07-02 HAT6043 - Jul 2, 15:10 UTCJul 2, 16:50 UTC1h 40m
2026-07-02 HAT6042 - Jul 2, 11:45 UTCJul 2, 13:10 UTC1h 25m
2026-07-02 HAT6041 - Jul 2, 05:35 UTCJul 2, 06:51 UTC1h 16m
2026-07-02 HAT6040 - Jul 2, 02:20 UTCJul 2, 03:35 UTC1h 15m
2026-07-01 HAT6033 RHO → BTS Jul 1, 22:35 UTCJul 2, 00:50 UTC2h 15m
2026-07-01 HAT6032 BTS → RHO Jul 1, 18:50 UTCJul 1, 21:15 UTC2h 25m
2026-07-01 HAT6031 - Jul 1, 10:05 UTCJul 1, 12:50 UTC2h 45m
2026-07-01 HAT6030 - Jul 1, 05:45 UTCJul 1, 08:35 UTC2h 50m
2026-06-30 HAT6023 SKG → BTS Jun 30, 15:05 UTCJun 30, 16:30 UTC1h 25m
2026-06-30 HAT6022 - Jun 30, 12:30 UTCJun 30, 13:55 UTC1h 25m
2026-06-30 HAT6021 - Jun 30, 08:50 UTCJun 30, 10:10 UTC1h 20m
2026-06-30 HAT6020 BTS → SKG Jun 30, 06:00 UTCJun 30, 07:30 UTC1h 30m
2026-06-29 HAT6011 ZTH → BTS Jun 29, 08:54 UTCJun 29, 10:15 UTC1h 20m
2026-06-29 HAT6010 - Jun 29, 05:40 UTCJun 29, 06:54 UTC1h 15m
2026-06-28 HAT6073 - Jun 28, 16:39 UTCJun 28, 18:44 UTC2h 5m
2026-06-28 HAT6072 - Jun 28, 13:19 UTCJun 28, 15:14 UTC1h 55m
2026-06-28 HAT6071 - Jun 28, 10:00 UTCJun 28, 11:50 UTC1h 50m
2026-06-28 HAT6070 - Jun 28, 06:30 UTCJun 28, 08:29 UTC2h 0m
2026-06-27 HAT6063 - Jun 27, 14:00 UTCJun 27, 15:30 UTC1h 30m
2026-06-27 HAT6062 - Jun 27, 11:44 UTCJun 27, 13:09 UTC1h 25m
2026-06-27 HAT060P - Jun 27, 08:55 UTCJun 27, 10:10 UTC1h 15m
2026-06-27 HAT6060 BTS → BOJ Jun 27, 06:05 UTCJun 27, 07:30 UTC1h 25m
2026-06-26 HAT6053 - Jun 26, 15:45 UTCJun 26, 17:19 UTC1h 35m
2026-06-26 HAT6052 - Jun 26, 13:04 UTCJun 26, 14:44 UTC1h 40m
2026-06-26 HAT050P AHO → BTS Jun 26, 09:50 UTCJun 26, 11:24 UTC1h 35m
2026-06-26 HAT6050 BTS → AHO Jun 26, 06:45 UTCJun 26, 08:20 UTC1h 35m
2026-06-25 HAT6045 - Jun 25, 21:25 UTCJun 25, 22:49 UTC1h 25m
2026-06-25 HAT6044 - Jun 25, 18:19 UTCJun 25, 20:05 UTC1h 45m
2026-06-25 HAT043P - Jun 25, 14:20 UTCJun 25, 15:59 UTC1h 40m
2026-06-25 HAT6042 - Jun 25, 11:44 UTCJun 25, 13:09 UTC1h 25m
2026-06-25 HAT6041 - Jun 25, 05:00 UTCJun 25, 06:20 UTC1h 20m

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

Mode-S 4D2198 frequently asked

What is Mode-S code 4D2198?
4D2198 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-MPW.
Where is Mode-S 4D2198 registered?
Mode-S code 4D2198 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2198 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2198, octal 23220630, decimal 5,054,872.
What flights does 4D2198 operate?
Mode-S 4D2198 has broadcast 20 distinct callsigns, including HAT6070, HAT6020, HAT6010, HAT6073, HAT6072.