Apparatus

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sensors Mode-S transponder

781642

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-307C · AIRBUS A-350-900

Hex
781642
Octal
36013102
Decimal
7,870,018
Country
CN
Tail
B-307C
Type
A359
No current signal · last broadcast Jul 26, 12:55 UTC
Flights observed
196
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 12:55 UTC

Last known position

Most recent position reported by Mode-S 781642.

Country allocation

The ICAO 24-bit address 781642 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
CCA950 - 10 2026-07-18
CCA862 - 10 2026-06-16
CCA967 Air China 9 2026-07-24
CCA851 Air China 9 2026-07-05
CCA846 - 9 2026-07-04
CCA424 - 9 2026-06-24
CCA852 Air China 8 2026-07-06
CCA912 - 7 2026-07-10
CCA911 - 6 2026-07-09
CCA877 Air China 6 2026-05-29
CCA868 - 6 2026-07-02
CCA867 Air China 6 2026-06-30
CCA861 - 6 2026-06-15
CCA968 Air China 5 2026-07-25
CCA949 - 5 2026-07-13
CCA878 Air China 5 2026-05-29
CCA446 - 5 2026-06-18
CCA423 Air China 5 2026-06-23
CCA847 - 4 2026-07-15
CCA845 Air China 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA826 SIN → PVG Jul 26, 09:40 UTCJul 26, 12:55 UTC3h 15m
2026-07-25 CCA968 MXP → PVG Jul 25, 12:35 UTCJul 26, 07:30 UTC18h 56m
2026-07-25 CCA968 MXP → PVG Jul 25, 10:45 UTCJul 26, 07:30 UTC20h 46m
2026-07-24 CCA967 PVG → MXP Jul 24, 19:45 UTCJul 25, 05:25 UTC9h 40m
2026-07-24 CCA967 PVG → MXP Jul 24, 08:35 UTCJul 25, 05:25 UTC20h 50m
2026-07-24 CCA967 PVG → MXP Jul 24, 07:05 UTCJul 25, 05:25 UTC22h 20m
2026-07-23 CCA968 MXP → PVG Jul 23, 10:40 UTCJul 24, 05:05 UTC18h 25m
2026-07-22 CCA967 PVG → MXP Jul 22, 22:10 UTCJul 22, 22:55 UTC45m
2026-07-21 CCA840 BCN → PVG Jul 21, 11:00 UTCJul 22, 04:40 UTC17h 40m
2026-07-20 CCA839 PVG → BCN Jul 20, 21:55 UTCJul 21, 05:35 UTC7h 40m
2026-07-20 CCA839 PVG → BCN Jul 20, 06:35 UTCJul 21, 05:35 UTC22h 59m
2026-07-19 CCA828 - Jul 19, 10:50 UTCJul 20, 04:45 UTC17h 55m
2026-07-18 CCA827 PVG → MUC Jul 18, 22:50 UTCJul 19, 05:30 UTC6h 40m
2026-07-18 CCA1421 PEK → CTU Jul 18, 03:15 UTCJul 18, 03:30 UTC15m
2026-07-18 CCA950 - Jul 18, 00:45 UTCJul 18, 01:00 UTC15m
2026-07-17 CCA950 - Jul 17, 15:44 UTCJul 17, 22:15 UTC6h 30m
2026-07-16 CCA967 - Jul 16, 19:50 UTCJul 17, 11:30 UTC15h 40m
2026-07-16 CCA967 - Jul 16, 12:34 UTCJul 17, 11:30 UTC22h 55m
2026-07-16 CCA967 - Jul 16, 10:45 UTCJul 17, 10:30 UTC23h 45m
2026-07-15 CCA847 - Jul 15, 19:45 UTCJul 16, 06:15 UTC10h 30m
2026-07-15 CCA847 - Jul 15, 06:45 UTCJul 16, 06:15 UTC23h 30m
2026-07-14 CCA968 MXP → NRT Jul 14, 10:50 UTCJul 15, 05:00 UTC18h 9m
2026-07-13 CCA949 - Jul 13, 21:05 UTCJul 14, 04:05 UTC7h 0m
2026-07-13 CCA1411 - Jul 13, 07:40 UTCJul 13, 08:01 UTC20m
2026-07-13 CCA632 - Jul 13, 05:01 UTCJul 13, 05:20 UTC20m
2026-07-12 CCA632 - Jul 12, 20:10 UTCJul 13, 02:35 UTC6h 25m
2026-07-12 CCA631 - Jul 12, 14:25 UTCJul 12, 17:05 UTC2h 40m
2026-07-12 CCA598 - Jul 12, 04:35 UTCJul 12, 04:50 UTC15m
2026-07-11 CCA598 - Jul 11, 20:40 UTCJul 12, 02:10 UTC5h 30m
2026-07-11 CCA597 - Jul 11, 11:55 UTCJul 11, 17:30 UTC5h 35m
2026-07-10 CCA1379 - Jul 10, 12:15 UTCJul 10, 12:40 UTC25m
2026-07-10 CCA912 - Jul 10, 00:35 UTCJul 10, 00:55 UTC20m
2026-07-09 CCA912 - Jul 9, 17:20 UTCJul 9, 22:10 UTC4h 50m
2026-07-09 CCA911 - Jul 9, 06:30 UTCJul 9, 14:55 UTC8h 25m
2026-07-09 CCA620 - Jul 9, 02:40 UTCJul 9, 02:55 UTC15m
2026-07-08 CCA620 - Jul 8, 17:45 UTCJul 9, 00:20 UTC6h 35m
2026-07-08 CCA619 - Jul 8, 08:50 UTCJul 8, 15:45 UTC6h 55m
2026-07-08 CCA912 ARN → PEK Jul 8, 02:45 UTCJul 8, 03:05 UTC20m
2026-07-07 CCA912 ARN → PEK Jul 7, 19:30 UTCJul 7, 21:35 UTC2h 5m
2026-07-07 CCA911 - Jul 7, 17:10 UTCJul 7, 17:40 UTC30m
2026-07-07 CCA911 - Jul 7, 12:35 UTCJul 7, 16:10 UTC3h 35m
2026-07-06 CCA852 NCE → PEK Jul 6, 11:55 UTCJul 6, 21:00 UTC9h 5m
2026-07-05 CCA851 PEK → NCE Jul 5, 22:55 UTCJul 6, 02:30 UTC3h 35m
2026-07-05 CCA851 PEK → NCE Jul 5, 19:50 UTCJul 5, 20:00 UTC10m
2026-07-05 CCA1446 - Jul 5, 11:00 UTCJul 5, 11:15 UTC15m
2026-07-05 CCA1445 - Jul 5, 02:45 UTCJul 5, 03:10 UTC25m
2026-07-04 CCA846 - Jul 4, 10:55 UTCJul 4, 18:15 UTC7h 20m
2026-07-03 CCA845 PEK → BCN Jul 3, 22:30 UTCJul 4, 06:00 UTC7h 30m
2026-07-03 CCA1352 - Jul 3, 07:35 UTCJul 3, 07:50 UTC15m
2026-07-03 CCA1351 - Jul 3, 00:25 UTCJul 3, 00:45 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-307C page for operator, model, and routing details .

Mode-S 781642 frequently asked

What is Mode-S code 781642?
781642 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-307C.
Where is Mode-S 781642 registered?
Mode-S code 781642 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781642 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781642, octal 36013102, decimal 7,870,018.
What flights does 781642 operate?
Mode-S 781642 has broadcast 20 distinct callsigns, including CCA950, CCA862, CCA967, CCA851, CCA846.