Apparatus

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sensors Mode-S transponder

781641

ICAO 24-bit transponder address · allocated to China

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

Hex
781641
Octal
36013101
Decimal
7,870,017
Country
CN
Tail
B-307A
Type
A359
Broadcasting now · callsign CCA569 · 7,800 ft
Flights observed
170
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Current position

781641 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781641 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
CCA848 - 12 2026-06-30
CCA847 Air China 11 2026-06-29
CCA935 - 9 2026-07-03
CCA967 - 8 2026-07-04
CCA950 - 8 2026-07-12
CCA867 Air China 8 2026-07-09
CCA852 Air China 8 2026-06-23
CCA851 Air China 8 2026-06-22
CCA936 Air China 7 2026-07-03
CCA878 Air China 7 2026-05-30
CCA877 Air China 6 2026-05-30
CCA862 Air China 6 2026-05-22
CCA846 Air China 6 2026-06-03
CCA968 Air China 5 2026-07-02
CCA845 Air China 5 2026-06-02
CCA841 Air China 5 2026-06-24
CCA868 - 4 2026-07-11
CCA861 Air China 3 2026-05-22
CCA842 Air China 3 2026-06-25
CCA1422 Air China 3 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CCA569 - Jul 14, 12:30 UTCJul 14, 16:10 UTC3h 40m
2026-07-14 CCA569 - Jul 14, 09:20 UTCJul 14, 09:30 UTC10m
2026-07-13 CCA1883 - Jul 13, 13:00 UTCJul 13, 13:10 UTC10m
2026-07-13 CCA1446 - Jul 13, 10:20 UTCJul 13, 10:50 UTC30m
2026-07-13 CCA1445 - Jul 13, 02:45 UTCJul 13, 03:05 UTC20m
2026-07-12 CCA950 - Jul 12, 11:55 UTCJul 12, 21:15 UTC9h 20m
2026-07-11 CCA949 - Jul 11, 18:20 UTCJul 12, 04:10 UTC9h 50m
2026-07-11 CCA1342 - Jul 11, 10:05 UTCJul 11, 10:15 UTC10m
2026-07-11 CCA1341 - Jul 11, 07:35 UTCJul 11, 07:50 UTC15m
2026-07-11 CCA1341 - Jul 11, 05:15 UTCJul 11, 05:40 UTC25m
2026-07-11 CCA868 - Jul 11, 00:35 UTCJul 11, 00:45 UTC10m
2026-07-10 CCA868 - Jul 10, 21:05 UTCJul 10, 21:25 UTC20m
2026-07-10 CCA868 - Jul 10, 08:45 UTCJul 10, 19:30 UTC10h 45m
2026-07-09 CCA867 - Jul 9, 19:20 UTCJul 10, 06:00 UTC10h 40m
2026-07-09 CCA867 - Jul 9, 17:45 UTCJul 9, 18:00 UTC15m
2026-07-09 CCA867 - Jul 9, 15:15 UTCJul 9, 15:30 UTC15m
2026-07-09 CCA867 SZX → JNB Jul 9, 12:55 UTCJul 9, 13:10 UTC15m
2026-07-09 CCA1330 - Jul 9, 05:35 UTCJul 9, 05:50 UTC15m
2026-07-08 CCA1309 - Jul 8, 10:55 UTCJul 8, 11:05 UTC10m
2026-07-08 CCA1523 - Jul 8, 03:15 UTCJul 8, 03:25 UTC10m
2026-07-07 CCA1401 - Jul 7, 13:15 UTCJul 7, 13:40 UTC25m
2026-07-07 CCA572 - Jul 7, 05:45 UTCJul 7, 06:05 UTC20m
2026-07-06 CCA572 - Jul 6, 20:00 UTCJul 7, 03:20 UTC7h 20m
2026-07-06 CCA571 - Jul 6, 07:15 UTCJul 6, 14:45 UTC7h 30m
2026-07-05 CCA950 MXP → PEK Jul 5, 20:45 UTCJul 5, 21:00 UTC15m
2026-07-05 CCA950 MXP → PEK Jul 5, 11:50 UTCJul 5, 14:00 UTC2h 10m
2026-07-04 CCA967 - Jul 4, 13:00 UTCJul 5, 06:15 UTC17h 15m
2026-07-03 CCA936 FRA → PVG Jul 3, 17:45 UTCJul 4, 02:35 UTC8h 50m
2026-07-03 CCA935 - Jul 3, 05:10 UTCJul 3, 14:50 UTC9h 40m
2026-07-02 CCA968 MXP → PVG Jul 2, 10:40 UTCJul 3, 05:25 UTC18h 45m
2026-07-01 CCA967 - Jul 1, 22:25 UTCJul 2, 05:30 UTC7h 5m
2026-07-01 CCA967 - Jul 1, 06:40 UTCJul 2, 05:30 UTC22h 50m
2026-06-30 CCA848 LGW → NRT Jun 30, 10:25 UTCJul 1, 05:05 UTC18h 40m
2026-06-29 CCA847 PVG → LGW Jun 29, 19:54 UTCJun 30, 06:25 UTC10h 31m
2026-06-29 CCA1883 - Jun 29, 13:49 UTCJun 29, 14:04 UTC15m
2026-06-28 CCA936 FRA → PVG Jun 28, 17:39 UTCJun 29, 02:30 UTC8h 50m
2026-06-27 CCA935 - Jun 27, 20:39 UTCJun 28, 14:30 UTC17h 50m
2026-06-27 CCA935 - Jun 27, 14:35 UTCJun 28, 14:14 UTC23h 40m
2026-06-27 CCA848 - Jun 27, 12:19 UTCJun 28, 11:45 UTC23h 25m
2026-06-27 CCA848 - Jun 27, 11:35 UTCJun 28, 08:55 UTC21h 20m
2026-06-26 CCA847 PVG → LGW Jun 26, 22:14 UTCJun 27, 08:55 UTC10h 40m
2026-06-26 CCA1421 - Jun 26, 00:50 UTCJun 26, 22:29 UTC21h 40m
2026-06-25 CCA842 VIE → PEK Jun 25, 19:59 UTCJun 25, 20:14 UTC15m
2026-06-25 CCA842 VIE → PEK Jun 25, 11:44 UTCJun 25, 17:30 UTC5h 45m
2026-06-24 CCA841 PEK → VIE Jun 24, 22:19 UTCJun 25, 04:25 UTC6h 5m
2026-06-24 CCA841 PEK → VIE Jun 24, 19:24 UTCJun 24, 19:39 UTC15m
2026-06-23 CCA852 NCE → PEK Jun 23, 20:54 UTCJun 23, 21:10 UTC15m
2026-06-23 CCA852 NCE → PEK Jun 23, 11:59 UTCJun 23, 18:25 UTC6h 25m
2026-06-22 CCA851 PEK → NCE Jun 22, 22:49 UTCJun 23, 05:45 UTC6h 55m
2026-06-17 CCA842 VIE → PEK Jun 17, 11:45 UTCJun 17, 17:35 UTC5h 50m

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-307A page for operator, model, and routing details .

Mode-S 781641 frequently asked

What is Mode-S code 781641?
781641 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-307A.
Where is Mode-S 781641 registered?
Mode-S code 781641 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781641 broadcasting right now?
Yes. Mode-S 781641 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781641, octal 36013101, decimal 7,870,017.
What flights does 781641 operate?
Mode-S 781641 has broadcast 20 distinct callsigns, including CCA848, CCA847, CCA935, CCA967, CCA950.