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sensors Mode-S transponder

4D2003

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-SAS · BOEING 737-800

Hex
4D2003
Octal
23220003
Decimal
5,054,467
Country
MT
Tail
9H-SAS
Type
B738
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
184
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 4D2003.

Country allocation

The ICAO 24-bit address 4D2003 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
SEU8942 - 11 2026-07-25
SEU7832 - 10 2026-05-19
SEU7548 - 10 2026-07-12
SEU8941 - 9 2026-07-25
SEU7834 - 9 2026-05-16
SEU7582 - 9 2026-07-16
SEU8623 - 8 2026-07-14
SEU7547 - 8 2026-07-12
SEU7363 - 8 2026-07-15
SEU8943 - 7 2026-07-06
SEU7831 - 7 2026-05-19
SEU7364 - 7 2026-07-15
SEU8657 - 6 2026-07-13
SEU8624 - 6 2026-07-14
SEU7850 - 6 2026-05-17
SEU7581 - 6 2026-07-16
SEU6128 - 6 2026-07-11
SEU8944 - 5 2026-06-28
SEU8658 - 4 2026-07-05
SEU7833 - 4 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SEU6131 - Jul 26, 21:30 UTCJul 26, 22:45 UTC1h 15m
2026-07-26 SEU6123 - Jul 26, 11:20 UTCJul 26, 19:55 UTC8h 35m
2026-07-25 SEU8941 - Jul 25, 23:50 UTCJul 26, 09:35 UTC9h 46m
2026-07-25 SEU8942 - Jul 25, 02:50 UTCJul 25, 22:20 UTC19h 30m
2026-07-25 SEU8942 - Jul 25, 00:50 UTCJul 25, 22:20 UTC21h 30m
2026-07-24 SEU8942 - Jul 24, 23:40 UTCJul 25, 22:20 UTC22h 40m
2026-07-24 SEU1002 - Jul 24, 20:20 UTCJul 24, 21:35 UTC1h 15m
2026-07-19 SEU1004 - Jul 19, 21:15 UTCJul 19, 21:25 UTC10m
2026-07-19 SEU6123 - Jul 19, 11:20 UTCJul 19, 19:55 UTC8h 35m
2026-07-18 SEU6124 - Jul 18, 22:45 UTCJul 19, 09:25 UTC10h 40m
2026-07-18 SEU8941 - Jul 18, 00:50 UTCJul 18, 21:10 UTC20h 21m
2026-07-18 SEU8941 - Jul 18, 00:15 UTCJul 18, 21:10 UTC20h 56m
2026-07-17 SEU7367 - Jul 17, 10:44 UTCJul 17, 22:49 UTC12h 5m
2026-07-16 SEU7581 - Jul 16, 23:59 UTCJul 17, 09:30 UTC9h 30m
2026-07-16 SEU7582 - Jul 16, 09:40 UTCJul 16, 22:45 UTC13h 5m
2026-07-15 SEU6126 - Jul 15, 22:35 UTCJul 16, 08:15 UTC9h 40m
2026-07-15 SEU6122 - Jul 15, 18:30 UTCJul 15, 21:05 UTC2h 35m
2026-07-15 SEU7363 - Jul 15, 10:45 UTCJul 15, 14:10 UTC3h 25m
2026-07-15 SEU7364 - Jul 15, 00:00 UTCJul 15, 09:25 UTC9h 25m
2026-07-14 SEU8623 - Jul 14, 11:00 UTCJul 14, 22:30 UTC11h 30m
2026-07-14 SEU8624 - Jul 14, 04:35 UTCJul 14, 08:15 UTC3h 40m
2026-07-13 SEU8657 - Jul 13, 22:20 UTCJul 14, 01:40 UTC3h 20m
2026-07-13 SEU8611 - Jul 13, 11:45 UTCJul 13, 21:10 UTC9h 25m
2026-07-12 SEU7547 - Jul 12, 21:00 UTCJul 13, 10:30 UTC13h 30m
2026-07-12 SEU7548 - Jul 12, 11:35 UTCJul 12, 19:45 UTC8h 10m
2026-07-12 SEU6124 - Jul 12, 06:05 UTCJul 12, 08:55 UTC2h 50m
2026-07-11 SEU6127 - Jul 11, 22:40 UTCJul 12, 01:30 UTC2h 50m
2026-07-11 SEU6128 - Jul 11, 18:35 UTCJul 11, 21:05 UTC2h 30m
2026-07-11 SEU6128 - Jul 11, 00:50 UTCJul 11, 21:05 UTC20h 15m
2026-07-10 SEU6128 - Jul 10, 23:10 UTCJul 11, 21:05 UTC21h 55m
2026-07-10 SEU7367 - Jul 10, 10:55 UTCJul 10, 21:15 UTC10h 20m
2026-07-10 SEU8941 - Jul 10, 00:00 UTCJul 10, 09:45 UTC9h 45m
2026-07-09 SEU8942 - Jul 9, 09:40 UTCJul 9, 22:30 UTC12h 50m
2026-07-08 SEU7581 - Jul 8, 23:50 UTCJul 9, 08:10 UTC8h 20m
2026-07-08 SEU7582 - Jul 8, 19:50 UTCJul 8, 22:25 UTC2h 35m
2026-07-08 SEU7363 - Jul 8, 10:35 UTCJul 8, 13:50 UTC3h 15m
2026-07-07 SEU7364 - Jul 7, 22:40 UTCJul 8, 09:20 UTC10h 40m
2026-07-07 SEU8623 - Jul 7, 10:55 UTCJul 7, 21:10 UTC10h 15m
2026-07-06 SEU8943 - Jul 6, 23:45 UTCJul 7, 09:20 UTC9h 35m
2026-07-06 SEU8611 - Jul 6, 11:45 UTCJul 6, 22:25 UTC10h 40m
2026-07-05 SEU8657 - Jul 5, 20:50 UTCJul 6, 10:30 UTC13h 40m
2026-07-05 SEU8658 - Jul 5, 11:05 UTCJul 5, 19:25 UTC8h 20m
2026-07-04 SEU7547 - Jul 4, 23:40 UTCJul 5, 09:25 UTC9h 45m
2026-07-04 SEU7548 - Jul 4, 19:50 UTCJul 4, 22:30 UTC2h 40m
2026-07-04 SEU6127 - Jul 4, 00:50 UTCJul 4, 19:45 UTC18h 55m
2026-07-03 SEU6127 - Jul 3, 23:10 UTCJul 4, 19:45 UTC20h 35m
2026-07-03 SEU7367 - Jul 3, 10:45 UTCJul 3, 21:25 UTC10h 40m
2026-07-02 SEU7368 - Jul 2, 22:45 UTCJul 3, 09:10 UTC10h 25m
2026-07-02 SEU6125 - Jul 2, 09:35 UTCJul 2, 20:55 UTC11h 20m
2026-07-01 SEU8941 - Jul 1, 23:40 UTCJul 2, 07:55 UTC8h 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-SAS page for operator, model, and routing details .

Mode-S 4D2003 frequently asked

What is Mode-S code 4D2003?
4D2003 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-SAS.
Where is Mode-S 4D2003 registered?
Mode-S code 4D2003 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2003 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2003, octal 23220003, decimal 5,054,467.
What flights does 4D2003 operate?
Mode-S 4D2003 has broadcast 20 distinct callsigns, including SEU8942, SEU7832, SEU7548, SEU8941, SEU7834.