Apparatus

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sensors Mode-S transponder

781649

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-MCK · AIRBUS A-320neo

Hex
781649
Octal
36013111
Decimal
7,870,025
Country
CN
Tail
B-MCK
Type
A20N
Broadcasting now · callsign AMU106 · 35,050 ft
Flights observed
119
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Current position

781649 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781649 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
AMU861 Air Macao 19 2026-06-13
AMU855 - 16 2026-06-14
AMU862 Air Macao 14 2026-06-13
AMU908 Air Macao 10 2026-06-12
AMU856 - 10 2026-06-14
AMU907 Air Macao 8 2026-06-12
AMU986 Air Macao 6 2026-06-13
AMU992 Air Macao 2 2026-05-31
AMU991 Air Macao 2 2026-05-31
AMU985 - 2 2026-05-27
AMU950 Air Macao 2 2026-05-29
AMU935 Air Macao 2 2026-05-27
AMU388 Air Macao 2 2026-05-14
AMU372 Air Macao 2 2026-06-14
AMU260 Air Macao 2 2026-05-12
AMU182 - 2 2026-06-15
AMU106 Air Macao 2 2026-05-25
AMU001 - 2 2026-05-07
AMU949 Air Macao 1 2026-05-29
AMU936 Air Macao 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-15 AMU181 CKG → MFM Jun 15, 10:20 UTCJun 15, 10:30 UTC10m
2026-06-15 AMU182 - Jun 15, 04:04 UTCJun 15, 04:20 UTC15m
2026-06-14 AMU372 MFM → KWE Jun 14, 10:50 UTCJun 14, 11:05 UTC15m
2026-06-14 AMU855 - Jun 14, 09:00 UTCJun 14, 09:15 UTC15m
2026-06-14 AMU855 - Jun 14, 05:40 UTCJun 14, 08:30 UTC2h 50m
2026-06-14 AMU856 - Jun 14, 00:30 UTCJun 14, 03:45 UTC3h 15m
2026-06-13 AMU986 MFM → DAD Jun 13, 13:40 UTCJun 13, 13:55 UTC15m
2026-06-13 AMU861 NRT → MFM Jun 13, 11:20 UTCJun 13, 11:35 UTC15m
2026-06-13 AMU861 NRT → MFM Jun 13, 07:25 UTCJun 13, 10:45 UTC3h 20m
2026-06-13 AMU862 MFM → NRT Jun 13, 01:50 UTCJun 13, 05:45 UTC3h 54m
2026-06-12 AMU907 SIN → MFM Jun 12, 09:35 UTCJun 12, 09:55 UTC20m
2026-06-12 AMU908 MFM → SIN Jun 12, 07:10 UTCJun 12, 07:50 UTC40m
2026-06-12 AMU908 MFM → SIN Jun 12, 04:25 UTCJun 12, 04:40 UTC15m
2026-06-11 AMU861 NRT → MFM Jun 11, 08:05 UTCJun 11, 12:20 UTC4h 15m
2026-06-11 AMU862 MFM → NRT Jun 11, 01:45 UTCJun 11, 05:40 UTC3h 55m
2026-06-10 AMU907 SIN → MFM Jun 10, 09:30 UTCJun 10, 10:00 UTC30m
2026-06-10 AMU908 MFM → SIN Jun 10, 04:30 UTCJun 10, 07:45 UTC3h 15m
2026-06-09 AMU861 NRT → MFM Jun 9, 11:30 UTCJun 9, 11:40 UTC10m
2026-06-09 AMU861 NRT → MFM Jun 9, 07:25 UTCJun 9, 11:00 UTC3h 35m
2026-06-09 AMU862 MFM → NRT Jun 9, 01:40 UTCJun 9, 05:30 UTC3h 50m
2026-06-08 AMU986 MFM → DAD Jun 8, 13:40 UTCJun 8, 13:50 UTC10m
2026-06-08 AMU128 MFM → NKG Jun 8, 05:20 UTCJun 8, 10:45 UTC5h 25m
2026-06-07 AMU907 SIN → MFM Jun 7, 09:45 UTCJun 7, 10:10 UTC25m
2026-06-07 AMU908 MFM → SIN Jun 7, 05:00 UTCJun 7, 08:05 UTC3h 5m
2026-06-06 AMU986 MFM → DAD Jun 6, 13:44 UTCJun 6, 13:54 UTC10m
2026-06-06 AMU855 KIX → MFM Jun 6, 05:35 UTCJun 6, 08:55 UTC3h 20m
2026-06-06 AMU856 MFM → KIX Jun 6, 00:30 UTCJun 6, 03:40 UTC3h 10m
2026-06-05 AMU907 SIN → MFM Jun 5, 09:25 UTCJun 5, 09:50 UTC25m
2026-06-05 AMU908 MFM → SIN Jun 5, 07:20 UTCJun 5, 07:40 UTC20m
2026-06-05 AMU371 KWE → MFM Jun 5, 02:30 UTCJun 5, 02:40 UTC10m
2026-06-04 AMU372 MFM → KWE Jun 4, 10:35 UTCJun 4, 10:50 UTC15m
2026-06-04 AMU855 KIX → MFM Jun 4, 08:35 UTCJun 4, 08:55 UTC20m
2026-06-04 AMU855 KIX → MFM Jun 4, 05:30 UTCJun 4, 08:00 UTC2h 30m
2026-06-04 AMU856 MFM → KIX Jun 4, 00:30 UTCJun 4, 03:40 UTC3h 10m
2026-06-03 AMU127 NKG → MFM Jun 3, 05:25 UTCJun 3, 11:00 UTC5h 35m
2026-06-02 AMU855 KIX → MFM Jun 2, 09:15 UTCJun 2, 09:35 UTC20m
2026-06-02 AMU855 KIX → MFM Jun 2, 06:05 UTCJun 2, 08:45 UTC2h 40m
2026-06-02 AMU856 MFM → KIX Jun 2, 00:40 UTCJun 2, 04:00 UTC3h 20m
2026-06-01 AMU861 NRT → MFM Jun 1, 07:50 UTCJun 1, 11:55 UTC4h 5m
2026-06-01 AMU862 MFM → NRT Jun 1, 01:40 UTCJun 1, 05:40 UTC4h 0m
2026-05-31 AMU991 BKK → MFM May 31, 15:20 UTCMay 31, 16:55 UTC1h 35m
2026-05-31 AMU992 MFM → BKK May 31, 11:10 UTCMay 31, 13:30 UTC2h 20m
2026-05-31 AMU821 ICN → MFM May 31, 08:30 UTCMay 31, 08:50 UTC20m
2026-05-30 AMU161 NGB → MFM May 30, 09:10 UTCMay 30, 10:00 UTC50m
2026-05-30 AMU162 MFM → NGB May 30, 05:00 UTCMay 30, 06:15 UTC1h 15m
2026-05-29 AMU949 HAN → MFM May 29, 17:25 UTCMay 29, 17:50 UTC25m
2026-05-29 AMU950 MFM → HAN May 29, 14:10 UTCMay 29, 15:15 UTC1h 5m
2026-05-29 AMU117 PVG → MFM May 29, 05:55 UTCMay 29, 11:40 UTC5h 45m
2026-05-27 AMU985 - May 27, 18:05 UTCMay 27, 18:15 UTC10m
2026-05-27 AMU935 BKK → MFM May 27, 10:00 UTCMay 27, 10:15 UTC15m

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

Mode-S 781649 frequently asked

What is Mode-S code 781649?
781649 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-MCK.
Where is Mode-S 781649 registered?
Mode-S code 781649 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781649 broadcasting right now?
Yes. Mode-S 781649 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781649, octal 36013111, decimal 7,870,025.
What flights does 781649 operate?
Mode-S 781649 has broadcast 20 distinct callsigns, including AMU861, AMU855, AMU862, AMU908, AMU856.