Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

75021F

ICAO 24-bit transponder address · allocated to Malaysia

Currently assigned to 9M-MXU · BOEING 737-800

Hex
75021F
Octal
35201037
Decimal
7,668,255
Country
MY
Tail
9M-MXU
Type
B738
No current signal · last broadcast Jul 26, 11:10 UTC
Flights observed
441
Distinct callsigns
20
Country
MY
Last broadcast
Jul 26, 11:10 UTC

Last known position

Most recent position reported by Mode-S 75021F.

Country allocation

The ICAO 24-bit address 75021F 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
MAS727 Malaysia Airlines 9 2026-07-20
MAS2637 Malaysia Airlines 9 2026-07-23
MAS775 Malaysia Airlines 8 2026-05-27
MAS774 Malaysia Airlines 8 2026-05-27
MAS755 - 8 2026-07-14
MAS726 Malaysia Airlines 8 2026-07-20
MAS711 Malaysia Airlines 8 2026-05-21
MAS2626 Malaysia Airlines 8 2026-07-23
MAS754 - 6 2026-07-14
MAS608 Malaysia Airlines 6 2026-06-12
MAS605 Malaysia Airlines 6 2026-06-12
MAS2628 - 6 2026-07-03
MAS2614 - 6 2026-07-04
MAS2611 - 6 2026-07-07
MAS2607 - 6 2026-07-04
MAS1155 - 6 2026-07-18
MAS783 - 5 2026-07-20
MAS781 Malaysia Airlines 5 2026-05-31
MAS780 Malaysia Airlines 5 2026-05-31
MAS2610 - 5 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 MAS720 CGK → KUL Jul 26, 09:25 UTCJul 26, 11:10 UTC1h 45m
2026-07-26 MAS721 KUL → CGK Jul 26, 06:05 UTCJul 26, 07:35 UTC1h 31m
2026-07-26 MAS614 SIN → KUL Jul 26, 03:50 UTCJul 26, 04:35 UTC45m
2026-07-26 MAS611 KUL → SIN Jul 26, 01:40 UTCJul 26, 02:25 UTC45m
2026-07-25 MAS610 SIN → KUL Jul 25, 13:25 UTCJul 25, 14:05 UTC40m
2026-07-25 MAS607 KUL → SIN Jul 25, 11:20 UTCJul 25, 11:55 UTC35m
2026-07-25 MAS865 KNO → KUL Jul 25, 09:10 UTCJul 25, 09:40 UTC30m
2026-07-25 MAS864 KUL → KNO Jul 25, 07:20 UTCJul 25, 07:35 UTC15m
2026-07-25 MAS628 SIN → KUL Jul 25, 04:45 UTCJul 25, 05:30 UTC45m
2026-07-25 MAS627 KUL → SIN Jul 25, 02:15 UTCJul 25, 03:10 UTC55m
2026-07-24 MAS2505 KCH → KUL Jul 24, 11:45 UTCJul 25, 00:10 UTC12h 25m
2026-07-24 MAS2517 KCH → KUL Jul 24, 06:05 UTCJul 24, 10:00 UTC3h 55m
2026-07-24 MAS1433 LGK → KUL Jul 24, 03:50 UTCJul 24, 04:25 UTC35m
2026-07-24 MAS1432 KUL → LGK Jul 24, 02:05 UTCJul 24, 02:35 UTC30m
2026-07-23 MAS2637 BKI → KUL Jul 23, 21:30 UTCJul 23, 23:45 UTC2h 15m
2026-07-23 MAS2626 KUL → BKI Jul 23, 14:15 UTCJul 23, 16:20 UTC2h 5m
2026-07-23 MAS791 HKT → KUL Jul 23, 09:10 UTCJul 23, 12:25 UTC3h 15m
2026-07-23 MAS2513 KCH → KUL Jul 23, 03:15 UTCJul 23, 07:15 UTC4h 0m
2026-07-22 MAS759 - Jul 22, 11:20 UTCJul 22, 11:40 UTC20m
2026-07-22 MAS079 HKG → KUL Jul 22, 04:20 UTCJul 22, 04:35 UTC15m
2026-07-22 MAS079 HKG → KUL Jul 22, 01:15 UTCJul 22, 01:30 UTC15m
2026-07-21 MAS078 KUL → HKG Jul 21, 12:10 UTCJul 21, 12:25 UTC15m
2026-07-21 MAS793 CNX → KUL Jul 21, 10:00 UTCJul 21, 10:20 UTC20m
2026-07-21 MAS793 CNX → KUL Jul 21, 07:50 UTCJul 21, 09:10 UTC1h 20m
2026-07-21 MAS792 KUL → CNX Jul 21, 04:05 UTCJul 21, 06:35 UTC2h 30m
2026-07-20 MAS726 CGK → KUL Jul 20, 21:20 UTCJul 20, 23:05 UTC1h 45m
2026-07-20 MAS727 KUL → CGK Jul 20, 14:10 UTCJul 20, 15:50 UTC1h 40m
2026-07-20 MAS783 - Jul 20, 11:55 UTCJul 20, 12:20 UTC25m
2026-07-20 MAS783 - Jul 20, 10:30 UTCJul 20, 11:10 UTC40m
2026-07-20 MAS782 - Jul 20, 08:50 UTCJul 20, 09:15 UTC25m
2026-07-20 MAS782 - Jul 20, 07:30 UTCJul 20, 07:40 UTC10m
2026-07-19 MAS1281 - Jul 19, 12:25 UTCJul 19, 12:55 UTC30m
2026-07-19 MAS1276 - Jul 19, 11:10 UTCJul 19, 11:20 UTC10m
2026-07-19 MAS789 - Jul 19, 09:15 UTCJul 19, 09:40 UTC25m
2026-07-19 MAS789 - Jul 19, 07:50 UTCJul 19, 08:25 UTC35m
2026-07-19 MAS788 KUL → BKK Jul 19, 06:05 UTCJul 19, 06:35 UTC30m
2026-07-19 MAS788 KUL → BKK Jul 19, 04:35 UTCJul 19, 04:55 UTC20m
2026-07-18 MAS1155 - Jul 18, 13:05 UTCJul 18, 13:40 UTC35m
2026-07-18 MAS1152 - Jul 18, 11:15 UTCJul 18, 11:50 UTC35m
2026-07-18 MAS2521 - Jul 18, 04:45 UTCJul 18, 08:45 UTC4h 0m
2026-07-17 MAS2637 - Jul 17, 21:39 UTCJul 17, 23:55 UTC2h 15m
2026-07-17 MAS2626 - Jul 17, 14:20 UTCJul 17, 16:29 UTC2h 10m
2026-07-17 MAS2593 - Jul 17, 07:05 UTCJul 17, 11:55 UTC4h 50m
2026-07-17 MAS2743 - Jul 17, 00:50 UTCJul 17, 05:25 UTC4h 35m
2026-07-16 MAS1459 - Jul 16, 12:25 UTCJul 16, 13:00 UTC35m
2026-07-16 MAS1450 - Jul 16, 10:40 UTCJul 16, 10:59 UTC20m
2026-07-16 MAS807 - Jul 16, 05:40 UTCJul 16, 09:05 UTC3h 25m
2026-07-16 MAS806 - Jul 16, 00:35 UTCJul 16, 04:00 UTC3h 25m
2026-07-15 MAS724 - Jul 15, 13:30 UTCJul 15, 15:15 UTC1h 45m
2026-07-15 MAS725 - Jul 15, 11:45 UTCJul 15, 12:05 UTC20m

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

Mode-S 75021F frequently asked

What is Mode-S code 75021F?
75021F is an ICAO 24-bit transponder address. Allocated to Malaysia. Assigned to 9M-MXU.
Where is Mode-S 75021F registered?
Mode-S code 75021F is allocated to Malaysia (MY). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 75021F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 75021F, octal 35201037, decimal 7,668,255.
What flights does 75021F operate?
Mode-S 75021F has broadcast 20 distinct callsigns, including MAS727, MAS2637, MAS775, MAS774, MAS755.