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 Jul 26, 22:55 UTC
Flights observed
168
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 22:55 UTC

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 - 11 2026-07-15
CCA935 Air China 11 2026-07-23
CCA445 - 11 2026-07-14
CCA911 Air China 8 2026-07-19
CCA847 Air China 8 2026-07-22
CCA423 - 8 2026-07-09
CCA912 - 7 2026-07-20
CCA424 - 7 2026-07-09
CCA458 - 5 2026-07-13
CCA457 - 5 2026-07-12
CCA446 - 5 2026-07-08
CCA936 Air China 4 2026-07-24
CCA878 Air China 4 2026-07-05
CCA875 Air China 4 2026-05-22
CCA848 Air China 4 2026-07-23
CCA828 Air China 4 2026-05-29
CCA967 Air China 3 2026-04-26
CCA949 Air China 3 2026-07-08
CCA877 - 3 2026-07-04
CCA868 Air China 3 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA630 LGW → PVG Jul 26, 19:55 UTCJul 26, 22:55 UTC3h 0m
2026-07-26 CCA629 PVG → LGW Jul 26, 01:50 UTCJul 26, 16:45 UTC14h 56m
2026-07-24 CCA936 FRA → PVG Jul 24, 17:40 UTCJul 25, 02:45 UTC9h 5m
2026-07-23 CCA935 PVG → FRA Jul 23, 19:35 UTCJul 24, 14:55 UTC19h 20m
2026-07-23 CCA935 PVG → FRA Jul 23, 17:05 UTCJul 24, 14:55 UTC21h 50m
2026-07-23 CCA935 PVG → FRA Jul 23, 16:45 UTCJul 24, 14:55 UTC22h 10m
2026-07-23 CCA848 LGW → PVG Jul 23, 11:05 UTCJul 24, 09:10 UTC22h 5m
2026-07-23 CCA848 LGW → PVG Jul 23, 10:30 UTCJul 24, 09:00 UTC22h 30m
2026-07-22 CCA847 PVG → LGW Jul 22, 20:40 UTCJul 23, 06:30 UTC9h 50m
2026-07-22 CCA1883 PEK → PVG Jul 22, 15:25 UTCJul 22, 15:35 UTC10m
2026-07-22 CCA1557 PEK → SHA Jul 22, 03:45 UTCJul 22, 04:05 UTC20m
2026-07-21 CCA1515 PEK → SHA Jul 21, 08:30 UTCJul 21, 08:40 UTC10m
2026-07-21 CCA572 CDG → CDG Jul 21, 05:25 UTCJul 21, 05:45 UTC20m
2026-07-20 CCA572 CDG → CDG Jul 20, 19:55 UTCJul 20, 22:45 UTC2h 50m
2026-07-20 CCA571 PEK → CDG Jul 20, 08:50 UTCJul 20, 16:15 UTC7h 25m
2026-07-20 CCA571 PEK → CDG Jul 20, 05:50 UTCJul 20, 06:05 UTC15m
2026-07-20 CCA912 - Jul 20, 00:30 UTCJul 20, 00:50 UTC20m
2026-07-19 CCA912 - Jul 19, 17:10 UTCJul 19, 19:20 UTC2h 10m
2026-07-19 CCA911 PEK → ARN Jul 19, 14:40 UTCJul 19, 15:00 UTC20m
2026-07-19 CCA911 PEK → ARN Jul 19, 09:45 UTCJul 19, 10:25 UTC40m
2026-07-19 CCA911 PEK → ARN Jul 19, 06:40 UTCJul 19, 06:50 UTC10m
2026-07-19 CCA570 - Jul 19, 03:50 UTCJul 19, 04:10 UTC20m
2026-07-18 CCA570 - Jul 18, 20:30 UTCJul 18, 21:35 UTC1h 5m
2026-07-18 CCA569 - Jul 18, 17:20 UTCJul 18, 17:50 UTC30m
2026-07-18 CCA569 - Jul 18, 12:35 UTCJul 18, 16:10 UTC3h 35m
2026-07-18 CCA632 - Jul 18, 05:10 UTCJul 18, 05:25 UTC15m
2026-07-17 CCA632 - Jul 17, 20:25 UTCJul 17, 23:00 UTC2h 35m
2026-07-17 CCA631 - Jul 17, 10:25 UTCJul 17, 17:15 UTC6h 50m
2026-07-16 CCA598 CPH → PEK Jul 16, 20:25 UTCJul 17, 01:49 UTC5h 25m
2026-07-16 CCA597 - Jul 16, 12:49 UTCJul 16, 18:19 UTC5h 30m
2026-07-16 CCA597 - Jul 16, 09:40 UTCJul 16, 09:50 UTC10m
2026-07-16 CCA1359 - Jul 16, 00:40 UTCJul 16, 01:00 UTC20m
2026-07-15 CCA950 - Jul 15, 11:55 UTCJul 15, 20:55 UTC9h 0m
2026-07-14 CCA445 - Jul 14, 21:20 UTCJul 15, 04:20 UTC6h 59m
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

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 Jul 26, 22:55 UTC.
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, CCA935, CCA445, CCA911, CCA847.