Apparatus

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sensors Mode-S transponder

781E4D

ICAO 24-bit transponder address · allocated to China

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

Hex
781E4D
Octal
36017115
Decimal
7,872,077
Country
CN
Tail
B-32CE
Type
A359
No current signal · last broadcast 4h ago
Flights observed
105
Distinct callsigns
20
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 781E4D.

Country allocation

The ICAO 24-bit address 781E4D 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
CCA877 Air China 13 2026-05-22
CCA878 Air China 12 2026-05-22
CCA867 Air China 12 2026-05-28
CCA911 Air China 10 2026-05-30
CCA912 Air China 9 2026-05-15
CCA868 Air China 9 2026-05-30
CCA846 Air China 8 2026-05-27
CCA842 Air China 7 2026-05-19
CCA841 Air China 7 2026-05-18
CCA845 Air China 5 2026-05-26
CCA828 Air China 1 2026-05-17
CCA827 Air China 1 2026-05-16
CCA1515 Air China 1 2026-04-20
CCA1394 Air China 1 2026-04-22
CCA1393 Air China 1 2026-04-21
CCA1375 Air China 1 2026-05-05
CCA1339 Air China 1 2026-04-19
CCA1332 Air China 1 2026-05-20
CCA1314 Air China 1 2026-05-16
CCA1313 Air China 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CCA911 PEK → ARN May 30, 06:45 UTCMay 30, 06:55 UTC10m
2026-05-30 CCA868 JNB → SZX May 30, 00:20 UTCMay 30, 00:35 UTC15m
2026-05-29 CCA868 JNB → SZX May 29, 20:25 UTCMay 29, 20:45 UTC20m
2026-05-29 CCA868 JNB → SZX May 29, 08:35 UTCMay 29, 19:55 UTC11h 20m
2026-05-28 CCA867 SZX → JNB May 28, 17:10 UTCMay 29, 05:10 UTC12h 0m
2026-05-28 CCA867 SZX → JNB May 28, 16:30 UTCMay 28, 16:40 UTC10m
2026-05-28 CCA867 SZX → JNB May 28, 13:35 UTCMay 28, 13:45 UTC10m
2026-05-28 CCA867 SZX → JNB May 28, 11:00 UTCMay 28, 11:20 UTC20m
2026-05-27 CCA846 BCN → PEK May 27, 20:35 UTCMay 27, 20:55 UTC20m
2026-05-27 CCA846 BCN → PEK May 27, 11:00 UTCMay 27, 18:15 UTC7h 15m
2026-05-26 CCA845 PEK → BCN May 26, 22:25 UTCMay 27, 05:55 UTC7h 30m
2026-05-26 CCA845 PEK → BCN May 26, 19:15 UTCMay 26, 19:30 UTC15m
2026-05-24 CCA846 BCN → PEK May 24, 11:05 UTCMay 24, 18:30 UTC7h 25m
2026-05-23 CCA845 PEK → BCN May 23, 22:25 UTCMay 24, 05:55 UTC7h 30m
2026-05-22 CCA878 CPH → PEK May 22, 17:20 UTCMay 22, 22:30 UTC5h 10m
2026-05-22 CCA877 PEK → CPH May 22, 09:15 UTCMay 22, 15:15 UTC6h 0m
2026-05-21 CCA846 BCN → PEK May 21, 20:55 UTCMay 21, 21:15 UTC20m
2026-05-21 CCA846 BCN → PEK May 21, 11:00 UTCMay 21, 18:25 UTC7h 25m
2026-05-20 CCA845 PEK → BCN May 20, 19:20 UTCMay 21, 05:50 UTC10h 30m
2026-05-20 CCA1332 SZX → PEK May 20, 06:00 UTCMay 20, 06:15 UTC15m
2026-05-19 CCA842 VIE → PEK May 19, 20:05 UTCMay 19, 20:20 UTC15m
2026-05-19 CCA842 VIE → PEK May 19, 11:45 UTCMay 19, 17:35 UTC5h 50m
2026-05-18 CCA841 PEK → VIE May 18, 19:05 UTCMay 19, 04:05 UTC9h 0m
2026-05-17 CCA828 MUC → PVG May 17, 10:30 UTCMay 17, 19:30 UTC9h 0m
2026-05-16 CCA827 PVG → MUC May 16, 23:00 UTCMay 17, 05:35 UTC6h 35m
2026-05-16 CCA1314 SZX → PEK May 16, 08:16 UTCMay 16, 08:26 UTC10m
2026-05-16 CCA1313 PEK → SZX May 16, 06:01 UTCMay 16, 06:16 UTC15m
2026-05-15 CCA912 ARN → PEK May 15, 17:25 UTCMay 15, 22:10 UTC4h 45m
2026-05-15 CCA911 PEK → ARN May 15, 10:05 UTCMay 15, 15:35 UTC5h 29m
2026-05-14 CCA911 PEK → ARN May 14, 17:20 UTCMay 15, 15:35 UTC22h 14m
2026-05-14 CCA911 PEK → ARN May 14, 17:05 UTCMay 15, 15:15 UTC22h 9m
2026-05-14 CCA846 BCN → PEK May 14, 13:20 UTCMay 15, 10:55 UTC21h 35m
2026-05-14 CCA846 BCN → PEK May 14, 11:20 UTCMay 15, 10:55 UTC23h 35m
2026-05-14 CCA846 BCN → PEK May 14, 10:50 UTCMay 14, 17:50 UTC7h 0m
2026-05-13 CCA845 PEK → BCN May 13, 20:50 UTCMay 14, 05:50 UTC9h 0m
2026-05-07 CCA868 JNB → SZX May 7, 02:10 UTCMay 7, 02:25 UTC15m
2026-05-06 CCA868 JNB → SZX May 6, 10:45 UTCMay 6, 21:45 UTC10h 59m
2026-05-05 CCA867 SZX → JNB May 5, 18:15 UTCMay 6, 04:55 UTC10h 40m
2026-05-05 CCA867 SZX → JNB May 5, 16:35 UTCMay 5, 16:55 UTC20m
2026-05-05 CCA867 SZX → JNB May 5, 11:00 UTCMay 5, 11:10 UTC10m
2026-05-05 CCA1375 PEK → SZX May 5, 00:45 UTCMay 5, 01:05 UTC20m
2026-05-04 CCA842 VIE → PEK May 4, 11:45 UTCMay 4, 19:55 UTC8h 11m
2026-05-03 CCA841 PEK → VIE May 3, 21:05 UTCMay 4, 04:44 UTC7h 40m
2026-05-03 CCA841 PEK → VIE May 3, 19:15 UTCMay 3, 19:30 UTC15m
2026-05-03 CCA912 ARN → PEK May 3, 00:25 UTCMay 3, 00:40 UTC15m
2026-05-02 CCA912 ARN → PEK May 2, 17:20 UTCMay 2, 22:00 UTC4h 40m
2026-05-02 CCA911 PEK → ARN May 2, 08:30 UTCMay 2, 15:05 UTC6h 35m
2026-05-01 CCA878 CPH → PEK May 1, 17:15 UTCMay 1, 20:00 UTC2h 45m
2026-05-01 CCA877 PEK → CPH May 1, 09:00 UTCMay 1, 14:45 UTC5h 45m
2026-05-01 CCA877 PEK → CPH May 1, 05:45 UTCMay 1, 05:55 UTC10m

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

Mode-S 781E4D frequently asked

What is Mode-S code 781E4D?
781E4D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CE.
Where is Mode-S 781E4D registered?
Mode-S code 781E4D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E4D broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E4D, octal 36017115, decimal 7,872,077.
What flights does 781E4D operate?
Mode-S 781E4D has broadcast 20 distinct callsigns, including CCA877, CCA878, CCA867, CCA911, CCA912.