Apparatus

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sensors Mode-S transponder

781B13

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-322H · AIRBUS A-350-900

Hex
781B13
Octal
36015423
Decimal
7,871,251
Country
CN
Tail
B-322H
Type
A359
No current signal · last broadcast 2h ago
Flights observed
101
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 781B13.

Country allocation

The ICAO 24-bit address 781B13 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
CCA912 Air China 8 2026-06-27
CCA935 - 7 2026-07-05
CCA840 - 7 2026-07-03
CCA911 - 6 2026-06-26
CCA839 - 6 2026-07-02
CCA846 - 5 2026-06-24
CCA845 Air China 4 2026-06-23
CCA598 - 4 2026-07-11
CCA936 Air China 3 2026-07-06
CCA828 - 3 2026-07-05
CCA827 Air China 3 2026-07-04
CCA632 - 3 2026-07-11
CCA631 - 3 2026-07-11
CCA597 - 3 2026-07-10
CCA1331 - 3 2026-06-20
CCA967 - 2 2026-06-18
CCA950 Air China 2 2026-06-19
CCA878 Air China 2 2026-06-22
CCA877 - 2 2026-06-21
CCA852 Air China 2 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 CCA632 - Jul 11, 19:35 UTCJul 12, 02:01 UTC6h 25m
2026-07-11 CCA631 - Jul 11, 09:50 UTCJul 11, 16:40 UTC6h 50m
2026-07-11 CCA598 - Jul 11, 04:20 UTCJul 11, 04:40 UTC20m
2026-07-10 CCA598 - Jul 10, 20:35 UTCJul 11, 01:50 UTC5h 15m
2026-07-10 CCA597 - Jul 10, 09:30 UTCJul 10, 18:25 UTC8h 55m
2026-07-10 CCA598 - Jul 10, 04:15 UTCJul 10, 04:25 UTC10m
2026-07-09 CCA598 - Jul 9, 20:30 UTCJul 10, 01:50 UTC5h 20m
2026-07-09 CCA597 - Jul 9, 17:45 UTCJul 9, 18:05 UTC20m
2026-07-09 CCA597 - Jul 9, 09:05 UTCJul 9, 16:05 UTC7h 0m
2026-07-09 CCA632 - Jul 9, 04:25 UTCJul 9, 04:45 UTC20m
2026-07-08 CCA632 - Jul 8, 19:40 UTCJul 9, 02:05 UTC6h 25m
2026-07-08 CCA631 - Jul 8, 10:20 UTCJul 8, 16:55 UTC6h 35m
2026-07-07 CCA631 - Jul 7, 15:10 UTCJul 8, 14:45 UTC23h 35m
2026-07-07 CCA1884 - Jul 7, 12:10 UTCJul 7, 12:35 UTC25m
2026-07-06 CCA936 FRA → PVG Jul 6, 17:45 UTCJul 7, 02:45 UTC9h 0m
2026-07-05 CCA935 - Jul 5, 20:05 UTCJul 6, 14:10 UTC18h 5m
2026-07-05 CCA935 - Jul 5, 16:50 UTCJul 6, 14:10 UTC21h 20m
2026-07-05 CCA935 - Jul 5, 16:40 UTCJul 6, 14:10 UTC21h 30m
2026-07-05 CCA935 - Jul 5, 12:50 UTCJul 6, 12:45 UTC23h 55m
2026-07-05 CCA828 - Jul 5, 11:20 UTCJul 6, 10:45 UTC23h 25m
2026-07-04 CCA827 PVG → MUC Jul 4, 10:50 UTCJul 5, 05:40 UTC18h 50m
2026-07-04 CCA827 PVG → MUC Jul 4, 10:40 UTCJul 5, 05:40 UTC19h 0m
2026-07-03 CCA840 - Jul 3, 17:35 UTCJul 4, 09:00 UTC15h 25m
2026-07-03 CCA840 - Jul 3, 12:50 UTCJul 4, 09:00 UTC20h 10m
2026-07-03 CCA840 - Jul 3, 11:10 UTCJul 4, 09:00 UTC21h 50m
2026-07-02 CCA839 - Jul 2, 21:50 UTCJul 3, 05:50 UTC8h 0m
2026-06-30 CCA840 - Jun 30, 10:45 UTCJun 30, 14:20 UTC3h 35m
2026-06-29 CCA839 - Jun 29, 13:04 UTCJun 30, 05:40 UTC16h 36m
2026-06-29 CCA839 - Jun 29, 09:54 UTCJun 30, 05:40 UTC19h 46m
2026-06-28 CCA828 - Jun 28, 12:50 UTCJun 29, 07:30 UTC18h 40m
2026-06-28 CCA828 - Jun 28, 11:00 UTCJun 29, 07:30 UTC20h 30m
2026-06-27 CCA827 PVG → MUC Jun 27, 19:45 UTCJun 28, 04:59 UTC9h 15m
2026-06-27 CCA912 ARN → PEK Jun 27, 00:50 UTCJun 27, 01:04 UTC15m
2026-06-26 CCA912 ARN → PEK Jun 26, 17:29 UTCJun 26, 22:14 UTC4h 45m
2026-06-26 CCA911 - Jun 26, 14:05 UTCJun 26, 14:29 UTC25m
2026-06-26 CCA911 - Jun 26, 09:20 UTCJun 26, 09:59 UTC40m
2026-06-26 CCA911 - Jun 26, 06:15 UTCJun 26, 06:25 UTC10m
2026-06-26 CCA912 ARN → PEK Jun 26, 00:50 UTCJun 26, 01:10 UTC20m
2026-06-25 CCA912 ARN → PEK Jun 25, 17:34 UTCJun 25, 22:20 UTC4h 45m
2026-06-25 CCA911 - Jun 25, 09:25 UTCJun 25, 14:24 UTC5h 0m
2026-06-24 CCA846 - Jun 24, 21:04 UTCJun 24, 21:19 UTC15m
2026-06-24 CCA846 - Jun 24, 11:05 UTCJun 24, 18:39 UTC7h 35m
2026-06-23 CCA845 PEK → BCN Jun 23, 19:04 UTCJun 24, 05:40 UTC10h 35m
2026-06-23 CCA1521 PEK → SHA Jun 23, 06:44 UTCJun 23, 06:55 UTC10m
2026-06-23 CCA912 ARN → PEK Jun 23, 00:35 UTCJun 23, 00:54 UTC20m
2026-06-22 CCA912 ARN → PEK Jun 22, 17:20 UTCJun 22, 22:10 UTC4h 50m
2026-06-22 CCA911 - Jun 22, 06:25 UTCJun 22, 14:40 UTC8h 15m
2026-06-22 CCA878 CPH → PEK Jun 22, 01:00 UTCJun 22, 01:19 UTC20m
2026-06-21 CCA878 CPH → PEK Jun 21, 17:24 UTCJun 21, 22:34 UTC5h 10m
2026-06-21 CCA877 - Jun 21, 09:00 UTCJun 21, 14:44 UTC5h 45m

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-322H page for operator, model, and routing details .

Mode-S 781B13 frequently asked

What is Mode-S code 781B13?
781B13 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322H.
Where is Mode-S 781B13 registered?
Mode-S code 781B13 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B13 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B13, octal 36015423, decimal 7,871,251.
What flights does 781B13 operate?
Mode-S 781B13 has broadcast 20 distinct callsigns, including CCA912, CCA935, CCA840, CCA911, CCA839.