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 Jul 26, 20:35 UTC
Flights observed
141
Distinct callsigns
18
Country
CN
Last broadcast
Jul 26, 20:35 UTC

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 18 distinct

Callsign Airline Flights Last seen
CSC3909 - 27 2026-07-15
CSC3924 Sichuan Airlines 17 2026-07-25
CSC3962 - 15 2026-07-17
CSC3961 - 14 2026-07-04
CSC3910 - 14 2026-07-15
CSC3995 - 13 2026-07-13
CSC3996 Sichuan Airlines 10 2026-05-03
CSC6788 Sichuan Airlines 9 2026-07-25
CSC3985 Sichuan Airlines 4 2026-07-26
CSC3938 Sichuan Airlines 4 2026-07-17
CSC3923 Sichuan Airlines 4 2026-07-25
CSC3986 Sichuan Airlines 3 2026-07-19
CSC3993 Sichuan Airlines 2 2026-04-29
CSC8894 Sichuan Airlines 1 2026-06-12
CSC8893 Sichuan Airlines 1 2026-07-24
CSC6872 Sichuan Airlines 1 2026-07-24
CSC3994 Sichuan Airlines 1 2026-04-29
CSC3932 - 1 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSC3985 TFU → DPS Jul 26, 09:05 UTCJul 26, 20:35 UTC11h 30m
2026-07-25 CSC3924 MLE → TFU Jul 25, 16:30 UTCJul 26, 09:35 UTC17h 6m
2026-07-25 CSC3924 MLE → TFU Jul 25, 13:05 UTCJul 26, 09:35 UTC20h 31m
2026-07-25 CSC3924 MLE → TFU Jul 25, 11:05 UTCJul 26, 09:35 UTC22h 31m
2026-07-25 CSC3923 TFU → MLE Jul 25, 09:55 UTCJul 25, 20:30 UTC10h 35m
2026-07-25 CSC6788 ZUH → TFU Jul 25, 04:30 UTCJul 25, 04:45 UTC15m
2026-07-24 CSC6872 PEK → TFU Jul 24, 12:50 UTCJul 24, 13:25 UTC35m
2026-07-24 CSC8893 CTU → PEK Jul 24, 04:00 UTCJul 24, 11:00 UTC7h 0m
2026-07-19 CSC3986 DPS → TFU Jul 19, 09:20 UTCJul 19, 20:30 UTC11h 10m
2026-07-19 CSC6788 ZUH → TFU Jul 19, 04:30 UTCJul 19, 04:40 UTC10m
2026-07-18 CSC3923 TFU → MLE Jul 18, 09:50 UTCJul 18, 20:10 UTC10h 20m
2026-07-18 CSC6788 ZUH → TFU Jul 18, 04:25 UTCJul 18, 04:35 UTC10m
2026-07-17 CSC3938 BKK → TFU Jul 17, 18:19 UTCJul 17, 19:45 UTC1h 25m
2026-07-17 CSC3962 - Jul 17, 07:55 UTCJul 17, 16:49 UTC8h 55m
2026-07-16 CSC3924 - Jul 16, 11:05 UTCJul 17, 06:00 UTC18h 55m
2026-07-16 CSC3924 - Jul 16, 10:04 UTCJul 17, 06:00 UTC19h 55m
2026-07-15 CSC3910 - Jul 15, 09:05 UTCJul 15, 11:00 UTC1h 55m
2026-07-15 CSC3909 - Jul 15, 04:15 UTCJul 15, 07:25 UTC3h 10m
2026-07-14 CSC3909 - Jul 14, 09:05 UTCJul 15, 07:25 UTC22h 19m
2026-07-14 CSC3909 - Jul 14, 07:40 UTCJul 15, 07:00 UTC23h 19m
2026-07-13 CSC3995 - Jul 13, 20:25 UTCJul 14, 06:15 UTC9h 50m
2026-07-13 CSC3995 - Jul 13, 09:15 UTCJul 14, 06:15 UTC21h 0m
2026-07-13 CSC6788 - Jul 13, 04:20 UTCJul 13, 04:35 UTC15m
2026-07-12 CSC3986 - Jul 12, 09:50 UTCJul 12, 21:25 UTC11h 35m
2026-07-12 CSC6788 - Jul 12, 04:01 UTCJul 12, 04:15 UTC15m
2026-07-11 CSC3932 - Jul 11, 09:35 UTCJul 11, 14:30 UTC4h 55m
2026-07-09 CSC3924 - Jul 9, 10:05 UTCJul 9, 20:50 UTC10h 45m
2026-07-09 CSC6788 - Jul 9, 05:00 UTCJul 9, 05:15 UTC15m
2026-07-08 CSC3910 - Jul 8, 09:15 UTCJul 8, 11:30 UTC2h 15m
2026-07-08 CSC3909 - Jul 8, 04:00 UTCJul 8, 07:10 UTC3h 10m
2026-07-07 CSC3909 - Jul 7, 11:05 UTCJul 8, 07:10 UTC20h 5m
2026-07-07 CSC3910 - Jul 7, 09:15 UTCJul 8, 07:10 UTC21h 55m
2026-07-07 CSC3909 - Jul 7, 04:15 UTCJul 7, 07:20 UTC3h 5m
2026-07-05 CSC3938 - Jul 5, 18:10 UTCJul 5, 19:35 UTC1h 25m
2026-07-05 CSC3962 - Jul 5, 07:55 UTCJul 5, 16:45 UTC8h 50m
2026-07-04 CSC3961 - Jul 4, 18:20 UTCJul 5, 06:05 UTC11h 45m
2026-07-04 CSC3962 - Jul 4, 07:55 UTCJul 4, 17:05 UTC9h 10m
2026-07-03 CSC3961 - Jul 3, 18:20 UTCJul 4, 06:00 UTC11h 40m
2026-07-03 CSC3962 - Jul 3, 07:50 UTCJul 3, 16:55 UTC9h 5m
2026-07-03 CSC3961 - Jul 3, 04:10 UTCJul 3, 05:40 UTC1h 30m
2026-07-01 CSC3985 - Jul 1, 09:15 UTCJul 1, 20:40 UTC11h 25m
2026-06-30 CSC6788 - Jun 30, 04:30 UTCJun 30, 04:40 UTC10m
2026-06-28 CSC3985 - Jun 28, 10:04 UTCJun 28, 21:40 UTC11h 35m
2026-06-28 CSC6788 - Jun 28, 05:15 UTCJun 28, 05:29 UTC15m
2026-06-27 CSC3938 - Jun 27, 18:20 UTCJun 27, 19:45 UTC1h 25m
2026-06-27 CSC3962 NRT → BKK Jun 27, 08:05 UTCJun 27, 16:59 UTC8h 55m
2026-06-27 CSC3961 - Jun 27, 04:15 UTCJun 27, 06:05 UTC1h 50m
2026-06-26 CSC3961 - Jun 26, 09:05 UTCJun 27, 06:05 UTC21h 0m
2026-06-26 CSC3962 - Jun 26, 08:05 UTCJun 27, 04:59 UTC20h 55m
2026-06-25 CSC3961 - Jun 25, 11:04 UTCJun 26, 06:00 UTC18h 55m

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 Jul 26, 20:35 UTC.
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 18 distinct callsigns, including CSC3909, CSC3924, CSC3962, CSC3961, CSC3910.