Apparatus

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sensors Mode-S transponder

781B5C

ICAO 24-bit transponder address · allocated to China

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

Hex
781B5C
Octal
36015534
Decimal
7,871,324
Country
CN
Tail
B-322Z
Type
A359
No current signal · last broadcast 17h ago
Flights observed
134
Distinct callsigns
20
Country
CN
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 781B5C.

Country allocation

The ICAO 24-bit address 781B5C 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 2026-07-11
CCA445 - 10 2026-07-10
CCA935 Air China 8 2026-05-29
CCA423 - 8 2026-07-09
CCA847 Air China 7 2026-04-19
CCA424 - 7 2026-07-09
CCA912 Air China 5 2026-07-03
CCA911 - 5 2026-07-02
CCA458 - 5 2026-07-13
CCA457 - 5 2026-07-12
CCA446 - 5 2026-07-08
CCA878 Air China 4 2026-07-05
CCA875 Air China 4 2026-05-22
CCA828 Air China 4 2026-05-29
CCA967 Air China 3 2026-04-26
CCA949 Air China 3 2026-07-08
CCA936 Air China 3 2026-05-30
CCA877 - 3 2026-07-04
CCA868 Air China 3 2026-05-26
CCA867 Air China 3 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CCA458 - Jul 13, 11:35 UTCJul 13, 18:05 UTC6h 30m
2026-07-12 CCA457 - Jul 12, 21:25 UTCJul 13, 04:30 UTC7h 5m
2026-07-12 CCA457 - Jul 12, 01:50 UTCJul 13, 00:40 UTC22h 50m
2026-07-11 CCA950 - Jul 11, 21:05 UTCJul 11, 21:25 UTC20m
2026-07-11 CCA950 - Jul 11, 12:05 UTCJul 11, 18:40 UTC6h 35m
2026-07-10 CCA445 - Jul 10, 21:30 UTCJul 11, 04:25 UTC6h 55m
2026-07-09 CCA424 - Jul 9, 23:05 UTCJul 10, 22:20 UTC23h 15m
2026-07-09 CCA424 - Jul 9, 21:15 UTCJul 9, 23:55 UTC2h 40m
2026-07-09 CCA423 - Jul 9, 11:35 UTCJul 9, 18:30 UTC6h 55m
2026-07-08 CCA423 - Jul 8, 17:45 UTCJul 9, 12:25 UTC18h 40m
2026-07-08 CCA446 - Jul 8, 13:05 UTCJul 9, 12:25 UTC23h 20m
2026-07-08 CCA446 - Jul 8, 11:20 UTCJul 8, 17:55 UTC6h 35m
2026-07-08 CCA949 PEK → MXP Jul 8, 00:40 UTCJul 8, 07:35 UTC6h 55m
2026-07-07 CCA1521 - Jul 7, 11:15 UTCJul 7, 11:40 UTC25m
2026-07-07 CCA598 - Jul 7, 04:25 UTCJul 7, 04:45 UTC20m
2026-07-06 CCA598 - Jul 6, 20:45 UTCJul 7, 02:05 UTC5h 20m
2026-07-06 CCA597 - Jul 6, 09:15 UTCJul 6, 17:55 UTC8h 40m
2026-07-05 CCA572 - Jul 5, 19:50 UTCJul 6, 03:10 UTC7h 20m
2026-07-05 CCA571 - Jul 5, 07:25 UTCJul 5, 15:00 UTC7h 35m
2026-07-05 CCA878 CPH → PEK Jul 5, 01:05 UTCJul 5, 01:25 UTC20m
2026-07-04 CCA878 CPH → PEK Jul 4, 17:25 UTCJul 4, 22:40 UTC5h 15m
2026-07-04 CCA877 - Jul 4, 08:55 UTCJul 4, 14:30 UTC5h 35m
2026-07-04 CCA878 CPH → PEK Jul 4, 01:00 UTCJul 4, 01:15 UTC15m
2026-07-03 CCA878 CPH → PEK Jul 3, 17:20 UTCJul 3, 22:40 UTC5h 20m
2026-07-03 CCA877 - Jul 3, 14:20 UTCJul 3, 14:40 UTC20m
2026-07-03 CCA877 - Jul 3, 08:55 UTCJul 3, 12:15 UTC3h 20m
2026-07-03 CCA912 ARN → PEK Jul 3, 00:25 UTCJul 3, 00:40 UTC15m
2026-07-02 CCA912 ARN → PEK Jul 2, 17:30 UTCJul 2, 22:05 UTC4h 35m
2026-07-02 CCA911 - Jul 2, 09:30 UTCJul 2, 10:20 UTC50m
2026-07-01 CCA911 - Jul 1, 12:25 UTCJul 2, 10:20 UTC21h 55m
2026-05-30 CCA936 FRA → PVG May 30, 17:45 UTCMay 30, 23:50 UTC6h 5m
2026-05-29 CCA935 PVG → FRA May 29, 19:35 UTCMay 30, 14:25 UTC18h 50m
2026-05-29 CCA935 PVG → FRA May 29, 16:15 UTCMay 30, 14:25 UTC22h 10m
2026-05-29 CCA935 PVG → FRA May 29, 13:05 UTCMay 30, 13:00 UTC23h 55m
2026-05-29 CCA828 MUC → PVG May 29, 11:05 UTCMay 30, 08:50 UTC21h 45m
2026-05-29 CCA828 MUC → PVG May 29, 10:45 UTCMay 30, 08:50 UTC22h 5m
2026-05-28 CCA827 PVG → MUC May 28, 19:45 UTCMay 29, 05:00 UTC9h 15m
2026-05-28 CCA1315 PEK → CAN May 28, 03:20 UTCMay 28, 03:45 UTC25m
2026-05-28 CCA912 ARN → PEK May 28, 01:00 UTCMay 28, 01:20 UTC20m
2026-05-27 CCA912 ARN → PEK May 27, 17:45 UTCMay 27, 22:35 UTC4h 50m
2026-05-27 CCA911 PEK → ARN May 27, 10:45 UTCMay 27, 15:55 UTC5h 10m
2026-05-27 CCA911 PEK → ARN May 27, 07:25 UTCMay 27, 07:40 UTC15m
2026-05-26 CCA912 ARN → PEK May 26, 17:25 UTCMay 26, 22:05 UTC4h 40m
2026-05-26 CCA911 PEK → ARN May 26, 09:35 UTCMay 26, 14:45 UTC5h 10m
2026-05-26 CCA868 JNB → SZX May 26, 00:35 UTCMay 26, 00:49 UTC15m
2026-05-25 CCA868 JNB → SZX May 25, 21:04 UTCMay 25, 21:19 UTC15m
2026-05-25 CCA868 JNB → SZX May 25, 08:35 UTCMay 25, 19:40 UTC11h 5m
2026-05-24 CCA867 SZX → JNB May 24, 18:45 UTCMay 25, 05:25 UTC10h 40m
2026-05-24 CCA867 SZX → JNB May 24, 17:20 UTCMay 24, 17:30 UTC10m
2026-05-24 CCA867 SZX → JNB May 24, 13:30 UTCMay 24, 13:50 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-322Z page for operator, model, and routing details .

Mode-S 781B5C frequently asked

What is Mode-S code 781B5C?
781B5C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322Z.
Where is Mode-S 781B5C registered?
Mode-S code 781B5C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B5C broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B5C, octal 36015534, decimal 7,871,324.
What flights does 781B5C operate?
Mode-S 781B5C has broadcast 20 distinct callsigns, including CCA950, CCA445, CCA935, CCA423, CCA847.