Apparatus

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sensors Mode-S transponder

781FB2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32EZ · AIRBUS A-350-900

Hex
781FB2
Octal
36017662
Decimal
7,872,434
Country
CN
Tail
B-32EZ
Type
A359
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
239
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S 781FB2.

Country allocation

The ICAO 24-bit address 781FB2 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
CCA852 - 14 2026-07-16
CCA846 Air China 14 2026-07-25
CCA842 Air China 14 2026-06-20
CCA935 - 13 2026-06-17
CCA851 - 13 2026-07-15
CCA845 Air China 13 2026-07-24
CCA841 Air China 11 2026-06-19
CCA862 Air China 9 2026-07-21
CCA867 Air China 8 2026-07-26
CCA861 Air China 7 2026-07-21
CCA968 Air China 6 2026-06-17
CCA967 - 6 2026-06-17
CCA950 - 5 2026-07-20
CCA949 - 5 2026-07-19
CCA936 Air China 5 2026-06-18
CCA868 - 5 2026-07-07
CCA912 - 4 2026-07-19
CCA878 Air China 4 2026-06-06
CCA848 Air China 4 2026-06-11
CCA828 Air China 4 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA867 SZX → JNB Jul 26, 16:45 UTCJul 26, 21:25 UTC4h 40m
2026-07-26 CCA867 SZX → JNB Jul 26, 11:05 UTCJul 26, 11:20 UTC15m
2026-07-25 CCA846 BCN → PEK Jul 25, 10:55 UTCJul 25, 20:55 UTC10h 0m
2026-07-24 CCA845 PEK → BCN Jul 24, 22:35 UTCJul 25, 05:55 UTC7h 20m
2026-07-24 CCA845 PEK → BCN Jul 24, 19:20 UTCJul 24, 19:35 UTC15m
2026-07-23 CCA846 BCN → PEK Jul 23, 20:45 UTCJul 23, 21:00 UTC15m
2026-07-23 CCA846 BCN → PEK Jul 23, 11:20 UTCJul 23, 18:30 UTC7h 10m
2026-07-22 CCA845 PEK → BCN Jul 22, 22:55 UTCJul 23, 06:20 UTC7h 25m
2026-07-22 CCA845 PEK → BCN Jul 22, 19:45 UTCJul 22, 19:55 UTC10m
2026-07-22 CCA1446 KMG → PEK Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 CCA1445 PEK → KMG Jul 22, 02:50 UTCJul 22, 03:10 UTC20m
2026-07-21 CCA862 GVA → PEK Jul 21, 20:30 UTCJul 21, 20:45 UTC15m
2026-07-21 CCA862 GVA → PEK Jul 21, 11:35 UTCJul 21, 18:00 UTC6h 25m
2026-07-21 CCA861 PEK → GVA Jul 21, 02:30 UTCJul 21, 09:20 UTC6h 50m
2026-07-20 CCA861 PEK → GVA Jul 20, 23:30 UTCJul 20, 23:45 UTC15m
2026-07-20 CCA950 - Jul 20, 20:40 UTCJul 20, 21:00 UTC20m
2026-07-20 CCA950 - Jul 20, 12:05 UTCJul 20, 18:15 UTC6h 10m
2026-07-19 CCA949 - Jul 19, 20:50 UTCJul 20, 03:45 UTC6h 55m
2026-07-19 CCA912 - Jul 19, 00:40 UTCJul 19, 00:55 UTC15m
2026-07-18 CCA912 - Jul 18, 17:25 UTCJul 18, 19:35 UTC2h 10m
2026-07-18 CCA911 PEK → ARN Jul 18, 10:20 UTCJul 18, 15:25 UTC5h 5m
2026-07-18 CCA570 - Jul 18, 03:40 UTCJul 18, 04:05 UTC25m
2026-07-17 CCA570 - Jul 17, 20:29 UTCJul 18, 01:15 UTC4h 45m
2026-07-17 CCA569 - Jul 17, 12:30 UTCJul 17, 17:25 UTC4h 55m
2026-07-17 CCA569 - Jul 17, 09:20 UTCJul 17, 09:30 UTC10m
2026-07-17 CCA1704 - Jul 17, 00:45 UTCJul 17, 00:55 UTC10m
2026-07-16 CCA852 - Jul 16, 12:30 UTCJul 16, 21:40 UTC9h 10m
2026-07-15 CCA851 - Jul 15, 22:25 UTCJul 16, 05:10 UTC6h 45m
2026-07-15 CCA1557 - Jul 15, 03:45 UTCJul 15, 04:00 UTC15m
2026-07-14 CCA862 - Jul 14, 20:20 UTCJul 14, 20:35 UTC15m
2026-07-14 CCA862 - Jul 14, 11:35 UTCJul 14, 18:05 UTC6h 30m
2026-07-13 CCA861 - Jul 13, 22:00 UTCJul 14, 04:50 UTC6h 50m
2026-07-13 CCA1365 - Jul 13, 08:30 UTCJul 13, 08:50 UTC20m
2026-07-13 CCA572 - Jul 13, 05:50 UTCJul 13, 06:05 UTC15m
2026-07-12 CCA572 - Jul 12, 20:05 UTCJul 13, 03:25 UTC7h 20m
2026-07-12 CCA571 - Jul 12, 07:15 UTCJul 12, 14:40 UTC7h 25m
2026-07-12 - - Jul 12, 04:10 UTCJul 12, 04:20 UTC10m
2026-07-11 CCA852 - Jul 11, 20:55 UTCJul 11, 21:10 UTC15m
2026-07-11 CCA852 - Jul 11, 11:55 UTCJul 11, 18:30 UTC6h 35m
2026-07-10 CCA851 - Jul 10, 22:25 UTCJul 11, 05:20 UTC6h 55m
2026-07-10 CCA1368 - Jul 10, 06:55 UTCJul 10, 07:10 UTC15m
2026-07-10 CCA1367 - Jul 10, 04:45 UTCJul 10, 05:05 UTC20m
2026-07-10 CCA1367 - Jul 10, 02:15 UTCJul 10, 02:40 UTC25m
2026-07-09 CCA846 - Jul 9, 20:50 UTCJul 9, 21:05 UTC15m
2026-07-09 CCA846 BCN → ABA Jul 9, 10:55 UTCJul 9, 18:25 UTC7h 30m
2026-07-08 CCA845 - Jul 8, 22:20 UTCJul 9, 05:55 UTC7h 35m
2026-07-08 CCA1720 - Jul 8, 08:10 UTCJul 8, 08:20 UTC10m
2026-07-07 CCA1405 PEK → CTU Jul 7, 23:55 UTCJul 8, 00:20 UTC25m
2026-07-07 CCA1314 - Jul 7, 19:55 UTCJul 7, 20:10 UTC15m
2026-07-07 CCA1314 - Jul 7, 17:35 UTCJul 7, 17:50 UTC15m

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-32EZ page for operator, model, and routing details .

Mode-S 781FB2 frequently asked

What is Mode-S code 781FB2?
781FB2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32EZ.
Where is Mode-S 781FB2 registered?
Mode-S code 781FB2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FB2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FB2, octal 36017662, decimal 7,872,434.
What flights does 781FB2 operate?
Mode-S 781FB2 has broadcast 20 distinct callsigns, including CCA852, CCA846, CCA842, CCA935, CCA851.