Apparatus

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sensors Mode-S transponder

781C2C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-325H · AIRBUS A-321neo

Hex
781C2C
Octal
36016054
Decimal
7,871,532
Country
CN
Tail
B-325H
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
60
Distinct callsigns
11
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 781C2C.

Country allocation

The ICAO 24-bit address 781C2C 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 11 distinct

Callsign Airline Flights Last seen
CSC3995 Sichuan Airlines 11 2026-05-03
CSC3909 Sichuan Airlines 11 2026-05-04
CSC3996 Sichuan Airlines 10 2026-05-03
CSC3910 Sichuan Airlines 8 2026-05-20
CSC3924 Sichuan Airlines 7 2026-05-28
CSC3962 Sichuan Airlines 4 2026-05-27
CSC3961 Sichuan Airlines 3 2026-05-27
CSC3993 Sichuan Airlines 2 2026-04-29
CSC3985 Sichuan Airlines 2 2026-05-29
CSC3994 Sichuan Airlines 1 2026-04-29
CSC3923 Sichuan Airlines 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSC3985 TFU → DPS May 29, 09:00 UTCMay 30, 05:00 UTC20h 1m
2026-05-28 CSC3924 MLE → TFU May 28, 16:25 UTCMay 29, 09:35 UTC17h 10m
2026-05-28 CSC3924 MLE → TFU May 28, 13:05 UTCMay 29, 09:35 UTC20h 30m
2026-05-28 CSC3924 MLE → TFU May 28, 11:05 UTCMay 29, 09:35 UTC22h 30m
2026-05-28 CSC3923 TFU → MLE May 28, 10:05 UTCMay 29, 09:00 UTC22h 55m
2026-05-27 CSC3962 NRT → TFU May 27, 08:30 UTCMay 27, 10:30 UTC2h 0m
2026-05-27 CSC3961 TFU → NRT May 27, 04:24 UTCMay 27, 05:49 UTC1h 25m
2026-05-24 CSC3962 NRT → TFU May 24, 07:50 UTCMay 24, 09:55 UTC2h 5m
2026-05-23 CSC3924 MLE → TFU May 23, 11:05 UTCMay 24, 05:50 UTC18h 46m
2026-05-23 CSC3924 MLE → TFU May 23, 10:35 UTCMay 24, 05:50 UTC19h 16m
2026-05-22 CSC3962 NRT → TFU May 22, 08:00 UTCMay 22, 10:05 UTC2h 5m
2026-05-22 CSC3961 TFU → NRT May 22, 04:35 UTCMay 22, 06:05 UTC1h 30m
2026-05-20 CSC3910 SIN → TFU May 20, 09:15 UTCMay 20, 11:20 UTC2h 5m
2026-05-19 CSC3924 MLE → TFU May 19, 11:05 UTCMay 20, 07:00 UTC19h 56m
2026-05-19 CSC3924 MLE → TFU May 19, 10:30 UTCMay 20, 07:00 UTC20h 31m
2026-05-04 CSC3910 SIN → TFU May 4, 09:35 UTCMay 4, 11:30 UTC1h 55m
2026-05-04 CSC3909 TFU → SIN May 4, 05:05 UTCMay 4, 07:10 UTC2h 5m
2026-05-03 CSC3909 TFU → SIN May 3, 09:05 UTCMay 4, 07:10 UTC22h 5m
2026-05-03 CSC3909 TFU → SIN May 3, 08:50 UTCMay 4, 07:00 UTC22h 10m
2026-05-03 CSC3996 KUL → TFU May 3, 07:35 UTCMay 3, 07:50 UTC15m
2026-05-03 CSC3995 TFU → KUL May 3, 05:45 UTCMay 3, 06:05 UTC20m
2026-05-03 CSC3995 TFU → KUL May 3, 04:05 UTCMay 3, 04:45 UTC40m
2026-05-01 CSC3910 SIN → TFU May 1, 09:20 UTCMay 1, 11:35 UTC2h 15m
2026-05-01 CSC3909 TFU → SIN May 1, 05:30 UTCMay 1, 07:40 UTC2h 10m
2026-04-30 CSC3909 TFU → SIN Apr 30, 09:05 UTCMay 1, 07:40 UTC22h 35m
2026-04-30 CSC3996 KUL → TFU Apr 30, 08:50 UTCMay 1, 06:10 UTC21h 20m
2026-04-30 CSC3996 KUL → TFU Apr 30, 07:40 UTCApr 30, 07:50 UTC10m
2026-04-30 CSC3995 TFU → KUL Apr 30, 05:45 UTCApr 30, 06:00 UTC15m
2026-04-29 CSC3994 KUL → TFU Apr 29, 16:25 UTCApr 30, 04:50 UTC12h 24m
2026-04-29 CSC3993 TFU → KUL Apr 29, 14:25 UTCApr 29, 14:55 UTC30m
2026-04-29 CSC3993 TFU → KUL Apr 29, 12:45 UTCApr 29, 13:30 UTC45m
2026-04-28 CSC3910 SIN → TFU Apr 28, 09:10 UTCApr 28, 11:15 UTC2h 5m
2026-04-28 CSC3909 TFU → SIN Apr 28, 05:20 UTCApr 28, 07:10 UTC1h 50m
2026-04-27 CSC3909 TFU → SIN Apr 27, 09:05 UTCApr 28, 07:10 UTC22h 5m
2026-04-27 CSC3909 TFU → SIN Apr 27, 08:40 UTCApr 28, 07:00 UTC22h 20m
2026-04-27 CSC3996 KUL → TFU Apr 27, 07:25 UTCApr 27, 07:40 UTC15m
2026-04-27 CSC3995 TFU → KUL Apr 27, 05:45 UTCApr 27, 06:05 UTC20m
2026-04-27 CSC3995 TFU → KUL Apr 27, 04:10 UTCApr 27, 04:50 UTC40m
2026-04-24 CSC3985 TFU → DPS Apr 24, 10:35 UTCApr 24, 18:50 UTC8h 15m
2026-04-19 CSC3962 NRT → TFU Apr 19, 08:05 UTCApr 19, 10:05 UTC2h 0m
2026-04-19 CSC3961 TFU → NRT Apr 19, 04:40 UTCApr 19, 06:00 UTC1h 20m
2026-04-17 CSC3996 KUL → TFU Apr 17, 08:55 UTCApr 17, 09:15 UTC20m
2026-04-17 CSC3996 KUL → TFU Apr 17, 07:30 UTCApr 17, 07:40 UTC10m
2026-04-17 CSC3995 TFU → KUL Apr 17, 05:45 UTCApr 17, 06:05 UTC20m
2026-04-17 CSC3995 TFU → KUL Apr 17, 04:10 UTCApr 17, 04:30 UTC20m
2026-04-16 CSC3910 SIN → TFU Apr 16, 11:09 UTCApr 16, 11:35 UTC25m
2026-04-16 CSC3910 SIN → TFU Apr 16, 09:24 UTCApr 16, 11:04 UTC1h 40m
2026-04-16 CSC3909 TFU → SIN Apr 16, 07:09 UTCApr 16, 07:24 UTC15m
2026-04-16 CSC3909 TFU → SIN Apr 16, 05:39 UTCApr 16, 06:20 UTC40m
2026-04-15 CSC3996 KUL → TFU Apr 15, 09:00 UTCApr 15, 09:40 UTC40m

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-325H page for operator, model, and routing details .

Mode-S 781C2C frequently asked

What is Mode-S code 781C2C?
781C2C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-325H.
Where is Mode-S 781C2C registered?
Mode-S code 781C2C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781C2C broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781C2C, octal 36016054, decimal 7,871,532.
What flights does 781C2C operate?
Mode-S 781C2C has broadcast 11 distinct callsigns, including CSC3995, CSC3909, CSC3996, CSC3910, CSC3924.