Apparatus

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sensors Mode-S transponder

781155

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8993 · AIRBUS A-321

Hex
781155
Octal
36010525
Decimal
7,868,757
Country
CN
Tail
B-8993
Type
A321
No current signal · last broadcast 1d ago
Flights observed
54
Distinct callsigns
12
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781155.

Country allocation

The ICAO 24-bit address 781155 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 12 distinct

Callsign Airline Flights Last seen
CSN8248 - 9 2026-07-20
CSN6078 - 8 2026-07-16
CSN6077 - 7 2026-07-09
CSN314 China Southern Airlines 6 2026-05-21
CSN313 China Southern Airlines 6 2026-05-21
CSN6209 - 5 2026-07-18
CSN6096 China Southern Airlines 4 2026-05-02
CSN6373 China Southern Airlines 3 2026-06-17
CSN6543 - 2 2026-06-30
CSN6437 - 2 2026-07-05
CSN5872 - 1 2026-07-02
CSN3409 - 1 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 CSN8248 - Jul 20, 03:55 UTCJul 20, 04:40 UTC45m
2026-07-19 CSN8248 - Jul 19, 05:20 UTCJul 20, 04:40 UTC23h 20m
2026-07-18 CSN8248 - Jul 18, 13:20 UTCJul 19, 05:50 UTC16h 30m
2026-07-18 CSN8248 - Jul 18, 09:15 UTCJul 19, 05:50 UTC20h 35m
2026-07-18 CSN6209 - Jul 18, 04:40 UTCJul 18, 13:50 UTC9h 10m
2026-07-16 CSN6078 - Jul 16, 02:35 UTCJul 16, 09:00 UTC6h 25m
2026-07-10 CSN6209 - Jul 10, 12:55 UTCJul 11, 05:05 UTC16h 10m
2026-07-10 CSN8248 - Jul 10, 03:50 UTCJul 11, 01:10 UTC21h 21m
2026-07-09 CSN8248 - Jul 9, 10:00 UTCJul 10, 04:30 UTC18h 30m
2026-07-09 CSN6077 - Jul 9, 04:30 UTCJul 9, 10:10 UTC5h 40m
2026-07-08 CSN6078 - Jul 8, 07:35 UTCJul 9, 04:45 UTC21h 10m
2026-07-08 CSN6078 - Jul 8, 02:40 UTCJul 8, 08:30 UTC5h 50m
2026-07-07 CSN6077 - Jul 7, 07:25 UTCJul 8, 02:55 UTC19h 30m
2026-07-05 CSN6437 - Jul 5, 04:00 UTCJul 5, 15:00 UTC11h 0m
2026-07-04 CSN8248 - Jul 4, 15:05 UTCJul 5, 04:45 UTC13h 40m
2026-07-04 CSN8248 - Jul 4, 05:35 UTCJul 5, 04:45 UTC23h 10m
2026-07-03 CSN6078 - Jul 3, 09:20 UTCJul 4, 05:45 UTC20h 25m
2026-07-03 CSN6078 - Jul 3, 08:30 UTCJul 4, 05:45 UTC21h 15m
2026-07-03 CSN6078 - Jul 3, 03:05 UTCJul 3, 10:25 UTC7h 20m
2026-07-02 CSN6078 - Jul 2, 11:20 UTCJul 3, 10:25 UTC23h 5m
2026-07-02 CSN5872 - Jul 2, 10:50 UTCJul 3, 08:40 UTC21h 50m
2026-06-30 CSN6543 - Jun 30, 04:20 UTCJun 30, 13:35 UTC9h 15m
2026-06-24 CSN8248 - Jun 24, 04:30 UTCJun 24, 13:34 UTC9h 5m
2026-06-18 CSN6437 SYX → HGH Jun 18, 04:10 UTCJun 18, 13:30 UTC9h 20m
2026-06-17 CSN6373 CGQ → PVG Jun 17, 12:25 UTCJun 18, 04:20 UTC15h 55m
2026-06-16 CSN3409 - Jun 16, 01:30 UTCJun 16, 02:29 UTC1h 0m
2026-06-04 CSN6373 CGQ → PVG Jun 4, 12:55 UTCJun 5, 04:55 UTC16h 0m
2026-06-03 CSN6373 CGQ → PVG Jun 3, 13:20 UTCJun 4, 13:05 UTC23h 45m
2026-06-03 CSN6209 HRB → PVG Jun 3, 03:45 UTCJun 3, 13:20 UTC9h 35m
2026-06-02 CSN6209 HRB → PVG Jun 2, 12:55 UTCJun 3, 09:30 UTC20h 35m
2026-05-21 CSN314 ICN → PVG May 21, 04:05 UTCMay 21, 04:50 UTC45m
2026-05-21 CSN313 PVG → ICN May 21, 01:40 UTCMay 21, 02:20 UTC40m
2026-05-20 CSN313 PVG → ICN May 20, 03:55 UTCMay 21, 02:20 UTC22h 26m
2026-05-17 CSN314 ICN → PVG May 17, 03:55 UTCMay 17, 04:35 UTC40m
2026-05-17 CSN313 PVG → ICN May 17, 02:00 UTCMay 17, 02:30 UTC30m
2026-05-14 CSN6209 HRB → PVG May 14, 03:40 UTCMay 14, 04:10 UTC30m
2026-05-12 CSN314 ICN → PVG May 12, 03:55 UTCMay 12, 04:20 UTC25m
2026-05-08 CSN6077 PVG → SGN May 8, 02:39 UTCMay 8, 08:14 UTC5h 35m
2026-05-06 CSN314 ICN → PVG May 6, 04:10 UTCMay 6, 04:35 UTC25m
2026-05-06 CSN313 PVG → ICN May 6, 01:50 UTCMay 6, 02:20 UTC30m
2026-05-02 CSN6096 SGN → SZX May 2, 21:40 UTCMay 3, 11:30 UTC13h 49m
2026-05-02 CSN6096 SGN → SZX May 2, 16:05 UTCMay 3, 11:30 UTC19h 24m
2026-05-02 CSN6096 SGN → SZX May 2, 08:00 UTCMay 2, 22:35 UTC14h 35m
2026-05-02 CSN6096 SGN → SZX May 2, 02:35 UTCMay 2, 22:35 UTC20h 0m
2026-04-26 CSN6078 SGN → PVG Apr 26, 07:50 UTCApr 26, 21:50 UTC14h 0m
2026-04-26 CSN6077 PVG → SGN Apr 26, 04:40 UTCApr 26, 04:50 UTC10m
2026-04-26 CSN6077 PVG → SGN Apr 26, 02:40 UTCApr 26, 02:55 UTC15m
2026-04-25 CSN314 ICN → PVG Apr 25, 03:50 UTCApr 26, 02:55 UTC23h 5m
2026-04-25 CSN313 PVG → ICN Apr 25, 01:35 UTCApr 25, 02:15 UTC40m
2026-04-22 CSN314 ICN → PVG Apr 22, 03:50 UTCApr 22, 04:15 UTC25m

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-8993 page for operator, model, and routing details .

Mode-S 781155 frequently asked

What is Mode-S code 781155?
781155 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8993.
Where is Mode-S 781155 registered?
Mode-S code 781155 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781155 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781155, octal 36010525, decimal 7,868,757.
What flights does 781155 operate?
Mode-S 781155 has broadcast 12 distinct callsigns, including CSN8248, CSN6078, CSN6077, CSN314, CSN313.