Apparatus

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sensors Mode-S transponder

781878

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-MBR · AIRBUS A-321neo

Hex
781878
Octal
36014170
Decimal
7,870,584
Country
CN
Tail
B-MBR
Type
A21N
No current signal · last broadcast Jul 26, 18:10 UTC
Flights observed
376
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 18:10 UTC

Last known position

Most recent position reported by Mode-S 781878.

Country allocation

The ICAO 24-bit address 781878 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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
AMU936 Air Macao 28 2026-07-24
AMU935 Air Macao 22 2026-07-24
AMU978 Air Macao 20 2026-07-24
AMU612 - 14 2026-07-16
AMU825 Air Macao 13 2026-07-23
AMU908 - 12 2026-06-26
AMU826 Air Macao 12 2026-07-23
AMU822 Air Macao 12 2026-07-20
AMU821 Air Macao 12 2026-07-20
AMU992 Air Macao 11 2026-06-10
AMU862 Air Macao 11 2026-07-19
AMU861 Air Macao 10 2026-07-19
AMU856 Air Macao 10 2026-07-25
AMU855 Air Macao 10 2026-07-25
AMU611 - 10 2026-07-16
AMU631 - 9 2026-07-07
AMU907 - 8 2026-06-26
AMU632 - 8 2026-07-06
AMU621 Air Macao 8 2026-07-26
AMU668 Air Macao 7 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AMU621 TPE → MFM Jul 26, 17:15 UTCJul 26, 18:10 UTC55m
2026-07-26 AMU622 MFM → TPE Jul 26, 14:20 UTCJul 26, 15:40 UTC1h 20m
2026-07-25 AMU855 KIX → MFM Jul 25, 05:15 UTCJul 25, 06:10 UTC55m
2026-07-25 AMU856 MFM → KIX Jul 25, 02:50 UTCJul 25, 04:00 UTC1h 10m
2026-07-25 AMU856 MFM → KIX Jul 25, 00:30 UTCJul 25, 00:45 UTC15m
2026-07-24 AMU978 MFM → DAD Jul 24, 11:55 UTCJul 24, 12:05 UTC10m
2026-07-24 AMU935 BKK → MFM Jul 24, 08:05 UTCJul 24, 08:35 UTC30m
2026-07-24 AMU936 MFM → BKK Jul 24, 05:45 UTCJul 24, 06:15 UTC30m
2026-07-24 AMU936 MFM → BKK Jul 24, 03:55 UTCJul 24, 04:05 UTC10m
2026-07-23 AMU825 ICN → MFM Jul 23, 23:20 UTCJul 24, 02:15 UTC2h 55m
2026-07-23 AMU826 MFM → ICN Jul 23, 10:25 UTCJul 23, 13:35 UTC3h 10m
2026-07-23 AMU667 KHH → MFM Jul 23, 07:10 UTCJul 23, 08:05 UTC55m
2026-07-23 AMU668 MFM → KHH Jul 23, 04:50 UTCJul 23, 05:55 UTC1h 5m
2026-07-22 AMU950 MFM → HAN Jul 22, 13:30 UTCJul 22, 15:25 UTC1h 55m
2026-07-21 AMU978 MFM → DAD Jul 21, 12:00 UTCJul 21, 12:10 UTC10m
2026-07-21 AMU935 BKK → MFM Jul 21, 08:10 UTCJul 21, 09:45 UTC1h 35m
2026-07-21 AMU936 MFM → BKK Jul 21, 04:45 UTCJul 21, 06:35 UTC1h 50m
2026-07-21 AMU936 MFM → BKK Jul 21, 04:00 UTCJul 21, 04:15 UTC15m
2026-07-20 AMU825 ICN → MFM Jul 20, 23:25 UTCJul 21, 02:40 UTC3h 14m
2026-07-20 AMU826 MFM → ICN Jul 20, 12:40 UTCJul 20, 15:50 UTC3h 10m
2026-07-20 AMU821 ICN → MFM Jul 20, 08:15 UTCJul 20, 11:15 UTC3h 0m
2026-07-20 AMU822 MFM → ICN Jul 20, 03:35 UTCJul 20, 06:50 UTC3h 15m
2026-07-19 AMU949 HAN → MFM Jul 19, 17:30 UTCJul 19, 17:50 UTC20m
2026-07-19 AMU950 MFM → HAN Jul 19, 14:40 UTCJul 19, 14:50 UTC10m
2026-07-19 AMU861 NRT → MFM Jul 19, 07:25 UTCJul 19, 11:20 UTC3h 55m
2026-07-19 AMU862 MFM → NRT Jul 19, 01:45 UTCJul 19, 05:50 UTC4h 5m
2026-07-18 AMU106 - Jul 18, 11:20 UTCJul 18, 18:20 UTC7h 0m
2026-07-18 AMU855 - Jul 18, 06:15 UTCJul 18, 09:20 UTC3h 5m
2026-07-18 AMU856 - Jul 18, 01:20 UTCJul 18, 04:55 UTC3h 36m
2026-07-17 AMU978 MFM → DAD Jul 17, 11:55 UTCJul 17, 12:10 UTC15m
2026-07-17 AMU855 - Jul 17, 05:39 UTCJul 17, 08:49 UTC3h 10m
2026-07-17 AMU856 - Jul 17, 00:55 UTCJul 17, 04:20 UTC3h 25m
2026-07-16 AMU978 - Jul 16, 12:05 UTCJul 16, 12:20 UTC15m
2026-07-16 AMU611 - Jul 16, 08:15 UTCJul 16, 09:25 UTC1h 10m
2026-07-16 AMU612 - Jul 16, 04:55 UTCJul 16, 06:15 UTC1h 20m
2026-07-15 AMU621 - Jul 15, 14:45 UTCJul 15, 15:55 UTC1h 10m
2026-07-15 AMU622 - Jul 15, 12:10 UTCJul 15, 13:45 UTC1h 35m
2026-07-15 AMU667 - Jul 15, 09:20 UTCJul 15, 10:10 UTC50m
2026-07-15 AMU668 - Jul 15, 07:00 UTCJul 15, 08:05 UTC1h 5m
2026-07-14 AMU226 - Jul 14, 11:00 UTCJul 15, 04:05 UTC17h 4m
2026-07-14 AMU671 - Jul 14, 04:30 UTCJul 14, 05:30 UTC1h 0m
2026-07-14 AMU672 - Jul 14, 02:00 UTCJul 14, 03:10 UTC1h 10m
2026-07-13 AMU987 - Jul 13, 11:55 UTCJul 13, 12:10 UTC15m
2026-07-13 AMU935 - Jul 13, 08:05 UTCJul 13, 08:20 UTC15m
2026-07-13 AMU936 - Jul 13, 06:10 UTCJul 13, 06:25 UTC15m
2026-07-13 AMU936 - Jul 13, 04:10 UTCJul 13, 04:25 UTC15m
2026-07-12 AMU621 - Jul 12, 14:20 UTCJul 12, 15:35 UTC1h 15m
2026-07-12 AMU622 - Jul 12, 12:01 UTCJul 12, 13:15 UTC1h 15m
2026-07-12 AMU388 - Jul 12, 05:01 UTCJul 12, 05:15 UTC15m
2026-07-11 AMU388 - Jul 11, 04:50 UTCJul 11, 05:10 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 B-MBR page for operator, model, and routing details .

Mode-S 781878 frequently asked

What is Mode-S code 781878?
781878 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-MBR.
Where is Mode-S 781878 registered?
Mode-S code 781878 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781878 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781878, octal 36014170, decimal 7,870,584.
What flights does 781878 operate?
Mode-S 781878 has broadcast 20 distinct callsigns, including AMU936, AMU935, AMU978, AMU612, AMU825.