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
122
Distinct callsigns
16
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 16 distinct

Callsign Airline Flights Last seen
CSC3909 - 24 2026-07-08
CSC3962 - 14 2026-07-05
CSC3961 - 14 2026-07-04
CSC3995 - 13 2026-07-13
CSC3910 - 13 2026-07-08
CSC3924 - 12 2026-07-09
CSC3996 - 11 2026-07-14
CSC6788 - 6 2026-07-13
CSC3985 - 3 2026-07-01
CSC3938 - 3 2026-07-05
CSC3993 Sichuan Airlines 2 2026-04-29
CSC3986 - 2 2026-07-12
CSC3923 - 2 2026-06-22
CSC8894 Sichuan Airlines 1 2026-06-12
CSC3994 Sichuan Airlines 1 2026-04-29
CSC3932 - 1 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSC3996 - Jul 14, 07:40 UTCJul 14, 10:25 UTC2h 45m
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
2026-06-25 CSC3961 - Jun 25, 09:34 UTCJun 26, 06:00 UTC20h 25m
2026-06-25 CSC3909 - Jun 25, 05:00 UTCJun 25, 07:19 UTC2h 20m
2026-06-24 CSC3909 - Jun 24, 09:05 UTCJun 25, 07:19 UTC22h 15m
2026-06-24 CSC3962 - Jun 24, 07:59 UTCJun 25, 07:00 UTC23h 0m
2026-06-23 CSC3924 - Jun 23, 11:04 UTCJun 24, 05:49 UTC18h 45m
2026-06-23 CSC3924 - Jun 23, 10:35 UTCJun 24, 05:49 UTC19h 15m
2026-06-22 CSC3923 - Jun 22, 19:54 UTCJun 23, 16:59 UTC21h 5m
2026-06-22 CSC3986 DPS → TFU Jun 22, 09:04 UTCJun 22, 20:34 UTC11h 30m
2026-06-22 CSC6788 - Jun 22, 04:04 UTCJun 22, 04:24 UTC20m
2026-06-21 CSC3910 - Jun 21, 09:15 UTCJun 21, 11:24 UTC2h 10m
2026-06-20 CSC3909 - Jun 20, 18:14 UTCJun 21, 07:04 UTC12h 50m
2026-06-20 CSC3962 - Jun 20, 07:49 UTCJun 20, 16:55 UTC9h 5m
2026-06-19 CSC3961 - Jun 19, 20:04 UTCJun 20, 05:49 UTC9h 45m
2026-06-19 CSC3961 - Jun 19, 09:04 UTCJun 20, 05:49 UTC20h 45m
2026-06-19 CSC3961 - Jun 19, 08:50 UTCJun 20, 05:49 UTC21h 0m
2026-06-12 CSC8894 PEK → CTU Jun 12, 03:50 UTCJun 12, 04:10 UTC20m
2026-06-11 CSC3924 MLE → TFU Jun 11, 10:40 UTCJun 11, 20:30 UTC9h 50m
2026-06-09 CSC3924 MLE → TFU Jun 9, 10:15 UTCJun 9, 19:45 UTC9h 30m
2026-06-06 CSC3938 BKK → TFU Jun 6, 18:29 UTCJun 6, 19:24 UTC55m

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 16 distinct callsigns, including CSC3909, CSC3962, CSC3961, CSC3995, CSC3910.