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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 Jul 26, 22:45 UTC
Flights observed
131
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 22:45 UTC

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
CCA935 - 8 2026-07-17
CCA912 Air China 8 2026-06-27
CCA840 Air China 8 2026-07-20
CCA839 Air China 8 2026-07-19
CCA846 - 7 2026-07-15
CCA911 - 6 2026-06-26
CCA632 - 6 2026-07-14
CCA968 Air China 5 2026-07-22
CCA936 Air China 5 2026-07-23
CCA845 - 5 2026-07-14
CCA631 - 4 2026-07-13
CCA598 - 4 2026-07-11
CCA848 Air China 3 2026-07-25
CCA828 - 3 2026-07-05
CCA827 Air China 3 2026-07-04
CCA597 - 3 2026-07-10
CCA1331 - 3 2026-06-20
CCA967 - 2 2026-06-18
CCA950 Air China 2 2026-06-19
CCA930 Air China 2 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA930 NRT → PVG Jul 26, 06:55 UTCJul 26, 22:45 UTC15h 50m
2026-07-25 CCA848 LGW → PVG Jul 25, 10:50 UTCJul 26, 05:00 UTC18h 10m
2026-07-25 CCA848 LGW → PVG Jul 25, 10:40 UTCJul 26, 05:00 UTC18h 20m
2026-07-24 CCA847 PVG → LGW Jul 24, 14:20 UTCJul 25, 05:50 UTC15h 30m
2026-07-24 CCA1884 PVG → PEK Jul 24, 10:15 UTCJul 24, 10:40 UTC25m
2026-07-23 CCA936 FRA → PVG Jul 23, 17:50 UTCJul 24, 02:45 UTC8h 55m
2026-07-22 CCA968 MXP → PVG Jul 22, 11:10 UTCJul 23, 05:10 UTC18h 0m
2026-07-21 CCA968 MXP → PVG Jul 21, 22:55 UTCJul 22, 13:35 UTC14h 40m
2026-07-21 CCA930 NRT → PVG Jul 21, 06:40 UTCJul 21, 23:40 UTC17h 0m
2026-07-20 CCA840 BCN → PVG Jul 20, 11:05 UTCJul 21, 05:05 UTC17h 59m
2026-07-19 CCA839 PVG → BCN Jul 19, 22:30 UTCJul 20, 06:20 UTC7h 50m
2026-07-19 CCA839 PVG → BCN Jul 19, 02:35 UTCJul 19, 23:20 UTC20h 45m
2026-07-18 CCA936 - Jul 18, 18:00 UTCJul 19, 02:50 UTC8h 50m
2026-07-17 CCA935 - Jul 17, 12:50 UTCJul 18, 11:50 UTC23h 1m
2026-07-17 CCA968 MXP → PVG Jul 17, 10:50 UTCJul 18, 08:50 UTC22h 1m
2026-07-17 CCA968 MXP → PVG Jul 17, 10:30 UTCJul 18, 08:45 UTC22h 16m
2026-07-16 CCA949 - Jul 16, 17:45 UTCJul 17, 04:44 UTC11h 0m
2026-07-16 CCA1476 - Jul 16, 00:10 UTCJul 16, 08:05 UTC7h 55m
2026-07-15 CCA846 - Jul 15, 20:55 UTCJul 15, 21:10 UTC15m
2026-07-15 CCA846 - Jul 15, 11:15 UTCJul 15, 18:35 UTC7h 20m
2026-07-14 CCA845 - Jul 14, 22:25 UTCJul 15, 05:55 UTC7h 29m
2026-07-14 CCA1521 - Jul 14, 07:20 UTCJul 14, 07:35 UTC15m
2026-07-14 CCA632 - Jul 14, 04:40 UTCJul 14, 05:00 UTC20m
2026-07-13 CCA632 - Jul 13, 19:50 UTCJul 14, 02:15 UTC6h 25m
2026-07-13 CCA631 - Jul 13, 12:20 UTCJul 13, 16:50 UTC4h 30m
2026-07-13 CCA570 - Jul 13, 03:50 UTCJul 13, 04:10 UTC20m
2026-07-12 CCA570 - Jul 12, 20:40 UTCJul 13, 01:25 UTC4h 45m
2026-07-12 CCA569 - Jul 12, 12:25 UTCJul 12, 17:30 UTC5h 5m
2026-07-12 CCA569 - Jul 12, 09:20 UTCJul 12, 09:30 UTC10m
2026-07-12 CCA632 - Jul 12, 04:30 UTCJul 12, 04:50 UTC20m
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

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 Jul 26, 22:45 UTC.
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 CCA935, CCA912, CCA840, CCA839, CCA846.