Apparatus

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sensors Mode-S transponder

7503AA

ICAO 24-bit transponder address · allocated to Malaysia

Currently assigned to 9M-XXT · AIRBUS A-330-300

Hex
7503AA
Octal
35201652
Decimal
7,668,650
Country
MY
Tail
9M-XXT
Type
A333
No current signal · last broadcast 1d ago
Flights observed
75
Distinct callsigns
20
Country
MY
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7503AA.

Country allocation

The ICAO 24-bit address 7503AA falls within the block assigned to Malaysia (MY) by ICAO Annex 10, Volume III. Every aircraft registered in Malaysia 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
MAS1426 Malaysia Airlines 6 2026-06-01
MAS774 Malaysia Airlines 3 2026-05-29
MAS727 Malaysia Airlines 3 2026-06-01
MAS726 Malaysia Airlines 3 2026-05-13
MAS613 Malaysia Airlines 3 2026-06-01
MAS1427 Malaysia Airlines 3 2026-05-21
MAS781 Malaysia Airlines 2 2026-05-12
MAS725 Malaysia Airlines 2 2026-04-17
MAS717 Malaysia Airlines 2 2026-04-23
MAS616 Malaysia Airlines 2 2026-05-24
MAS602 Malaysia Airlines 2 2026-05-22
MAS2646 Malaysia Airlines 2 2026-05-27
MAS2640 Malaysia Airlines 2 2026-05-22
MAS2616 Malaysia Airlines 2 2026-05-23
MAS1155 Malaysia Airlines 2 2026-05-31
MAS1152 Malaysia Airlines 2 2026-05-31
MAS079 Malaysia Airlines 2 2026-04-16
MAS871 Malaysia Airlines 1 2026-05-02
MAS861 Malaysia Airlines 1 2026-05-20
MAS860 Malaysia Airlines 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 MAS727 KUL → CGK Jun 1, 14:10 UTCJun 1, 15:05 UTC55m
2026-06-01 MAS613 KUL → SIN Jun 1, 09:45 UTCJun 1, 10:25 UTC40m
2026-06-01 MAS1426 KUL → KBR Jun 1, 05:25 UTCJun 1, 05:35 UTC10m
2026-06-01 MAS1384 KUL → KBR Jun 1, 00:35 UTCJun 1, 00:50 UTC15m
2026-05-31 MAS1155 PEN → KUL May 31, 11:55 UTCMay 31, 12:10 UTC15m
2026-05-31 MAS1152 KUL → PEN May 31, 09:50 UTCMay 31, 10:00 UTC10m
2026-05-29 MAS774 KUL → BKK May 29, 08:15 UTCMay 29, 10:10 UTC1h 55m
2026-05-27 MAS2646 KUL → BKI May 27, 05:55 UTCMay 27, 06:15 UTC20m
2026-05-27 MAS2646 KUL → BKI May 27, 03:54 UTCMay 27, 04:19 UTC25m
2026-05-24 MAS616 SIN → KUL May 24, 13:05 UTCMay 24, 13:45 UTC40m
2026-05-24 MAS1426 KUL → KBR May 24, 05:20 UTCMay 24, 05:30 UTC10m
2026-05-24 MAS2613 BKI → KUL May 24, 01:35 UTCMay 24, 03:40 UTC2h 5m
2026-05-23 MAS2616 KUL → BKI May 23, 08:30 UTCMay 23, 08:50 UTC20m
2026-05-23 MAS2616 KUL → BKI May 23, 06:35 UTCMay 23, 07:00 UTC25m
2026-05-23 MAS787 HKT → KUL May 23, 04:30 UTCMay 23, 04:45 UTC15m
2026-05-23 MAS786 KUL → HKT May 23, 01:30 UTCMay 23, 01:40 UTC10m
2026-05-22 MAS602 SIN → KUL May 22, 22:40 UTCMay 22, 23:15 UTC35m
2026-05-22 MAS609 KUL → SIN May 22, 15:15 UTCMay 22, 15:55 UTC40m
2026-05-22 MAS2631 BKI → KUL May 22, 11:20 UTCMay 22, 13:20 UTC2h 1m
2026-05-22 MAS2640 KUL → BKI May 22, 09:45 UTCMay 22, 10:05 UTC20m
2026-05-22 MAS2640 KUL → BKI May 22, 07:55 UTCMay 22, 08:20 UTC25m
2026-05-22 MAS711 KUL → CGK May 22, 01:25 UTCMay 22, 02:15 UTC50m
2026-05-21 MAS602 SIN → KUL May 21, 22:35 UTCMay 21, 23:10 UTC35m
2026-05-21 MAS1427 KBR → KUL May 21, 07:25 UTCMay 21, 07:45 UTC20m
2026-05-21 MAS1426 KUL → KBR May 21, 05:30 UTCMay 21, 05:40 UTC10m
2026-05-20 MAS616 SIN → KUL May 20, 11:40 UTCMay 20, 12:00 UTC20m
2026-05-20 MAS613 KUL → SIN May 20, 09:10 UTCMay 20, 10:00 UTC50m
2026-05-20 MAS1427 KBR → KUL May 20, 07:15 UTCMay 20, 07:35 UTC20m
2026-05-20 MAS1426 KUL → KBR May 20, 05:10 UTCMay 20, 05:20 UTC10m
2026-05-20 MAS861 KNO → KUL May 20, 02:45 UTCMay 20, 03:15 UTC30m
2026-05-20 MAS860 KUL → KNO May 20, 00:50 UTCMay 20, 01:05 UTC15m
2026-05-19 MAS775 BKK → KUL May 19, 11:50 UTCMay 19, 12:10 UTC20m
2026-05-19 MAS774 KUL → BKK May 19, 09:35 UTCMay 19, 10:10 UTC35m
2026-05-19 MAS774 KUL → BKK May 19, 08:25 UTCMay 19, 08:35 UTC10m
2026-05-19 MAS2574 KUL → MYY May 19, 01:15 UTCMay 19, 01:40 UTC25m
2026-05-14 MAS1459 LGK → KUL May 14, 12:55 UTCMay 14, 13:15 UTC20m
2026-05-14 MAS1450 KUL → LGK May 14, 10:40 UTCMay 14, 10:55 UTC15m
2026-05-13 MAS726 CGK → KUL May 13, 21:30 UTCMay 13, 23:10 UTC1h 40m
2026-05-12 MAS781 BKK → KUL May 12, 14:25 UTCMay 12, 14:50 UTC25m
2026-05-12 MAS781 BKK → KUL May 12, 13:00 UTCMay 12, 13:30 UTC30m
2026-05-12 MAS780 KUL → BKK May 12, 09:50 UTCMay 12, 11:45 UTC1h 55m
2026-05-09 MAS601 KUL → SIN May 9, 00:10 UTCMay 9, 00:25 UTC15m
2026-05-06 MAS704 KUL → MNL May 6, 02:25 UTCMay 6, 05:55 UTC3h 29m
2026-05-05 MAS1155 PEN → KUL May 5, 12:00 UTCMay 5, 12:20 UTC20m
2026-05-05 MAS1152 KUL → PEN May 5, 10:00 UTCMay 5, 10:15 UTC15m
2026-05-05 MAS1427 KBR → KUL May 5, 07:25 UTCMay 5, 07:45 UTC20m
2026-05-05 MAS1426 KUL → KBR May 5, 05:30 UTCMay 5, 05:45 UTC15m
2026-05-04 MAS613 KUL → SIN May 4, 09:30 UTCMay 4, 09:55 UTC25m
2026-05-03 MAS8434 - May 3, 14:50 UTCMay 3, 15:00 UTC10m
2026-05-03 MAS2668 KUL → SDK May 3, 07:15 UTCMay 3, 09:30 UTC2h 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 9M-XXT page for operator, model, and routing details .

Mode-S 7503AA frequently asked

What is Mode-S code 7503AA?
7503AA is an ICAO 24-bit transponder address. Allocated to Malaysia. Assigned to 9M-XXT.
Where is Mode-S 7503AA registered?
Mode-S code 7503AA is allocated to Malaysia (MY). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7503AA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7503AA, octal 35201652, decimal 7,668,650.
What flights does 7503AA operate?
Mode-S 7503AA has broadcast 20 distinct callsigns, including MAS1426, MAS774, MAS727, MAS726, MAS613.