Apparatus

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sensors Mode-S transponder

781BE6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-324K · AIRBUS A-321neo

Hex
781BE6
Octal
36015746
Decimal
7,871,462
Country
CN
Tail
B-324K
Type
A21N
No current signal · last broadcast 13h ago
Flights observed
74
Distinct callsigns
14
Country
CN
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 781BE6.

Country allocation

The ICAO 24-bit address 781BE6 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 14 distinct

Callsign Airline Flights Last seen
CSC3961 Sichuan Airlines 13 2026-05-25
CSC3909 Sichuan Airlines 13 2026-05-29
CSC3962 Sichuan Airlines 8 2026-05-26
CSC3910 Sichuan Airlines 8 2026-05-29
CSC6788 Sichuan Airlines 6 2026-05-06
CSC3995 Sichuan Airlines 6 2026-05-28
CSC3996 Sichuan Airlines 4 2026-05-22
CSC3924 Sichuan Airlines 4 2026-04-21
CSC3985 Sichuan Airlines 3 2026-04-22
CSC3923 Sichuan Airlines 3 2026-05-05
CSC6787 Sichuan Airlines 2 2026-05-06
CSC3993 Sichuan Airlines 2 2026-05-25
CSC3994 Sichuan Airlines 1 2026-05-25
CSC3986 Sichuan Airlines 1 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSC3910 SIN → TFU May 29, 09:10 UTCMay 29, 11:45 UTC2h 35m
2026-05-29 CSC3909 TFU → SIN May 29, 04:35 UTCMay 29, 07:05 UTC2h 30m
2026-05-28 CSC3909 TFU → SIN May 28, 09:35 UTCMay 29, 07:05 UTC21h 30m
2026-05-28 CSC3909 TFU → SIN May 28, 07:35 UTCMay 29, 07:05 UTC23h 30m
2026-05-28 CSC3995 TFU → KUL May 28, 05:45 UTCMay 28, 06:00 UTC15m
2026-05-27 CSC3910 SIN → TFU May 27, 09:35 UTCMay 28, 04:45 UTC19h 10m
2026-05-27 CSC3910 SIN → TFU May 27, 09:15 UTCMay 28, 04:45 UTC19h 30m
2026-05-27 CSC3909 TFU → SIN May 27, 04:30 UTCMay 27, 06:49 UTC2h 20m
2026-05-26 CSC3909 TFU → SIN May 26, 09:35 UTCMay 27, 06:49 UTC21h 15m
2026-05-26 CSC3962 NRT → TFU May 26, 08:04 UTCMay 27, 06:49 UTC22h 45m
2026-05-25 CSC3961 TFU → NRT May 25, 17:40 UTCMay 26, 06:04 UTC12h 24m
2026-05-25 CSC3994 KUL → TFU May 25, 16:35 UTCMay 25, 16:50 UTC15m
2026-05-25 CSC3993 TFU → KUL May 25, 14:25 UTCMay 25, 14:40 UTC15m
2026-05-25 CSC3993 TFU → KUL May 25, 12:20 UTCMay 25, 13:30 UTC1h 10m
2026-05-23 CSC3910 SIN → TFU May 23, 09:35 UTCMay 23, 12:05 UTC2h 30m
2026-05-23 CSC3909 TFU → SIN May 23, 04:40 UTCMay 23, 07:30 UTC2h 50m
2026-05-22 CSC3909 TFU → SIN May 22, 09:35 UTCMay 23, 07:30 UTC21h 54m
2026-05-22 CSC3909 TFU → SIN May 22, 08:45 UTCMay 23, 07:30 UTC22h 44m
2026-05-22 CSC3996 KUL → TFU May 22, 07:35 UTCMay 22, 07:50 UTC15m
2026-05-22 CSC3995 TFU → KUL May 22, 05:35 UTCMay 22, 05:50 UTC15m
2026-05-21 CSC3995 TFU → KUL May 21, 09:35 UTCMay 22, 04:40 UTC19h 5m
2026-05-21 CSC3910 SIN → TFU May 21, 09:15 UTCMay 22, 04:40 UTC19h 25m
2026-05-21 CSC3909 TFU → SIN May 21, 04:40 UTCMay 21, 07:00 UTC2h 20m
2026-05-20 CSC3909 TFU → SIN May 20, 08:35 UTCMay 21, 07:00 UTC22h 25m
2026-05-20 CSC3996 KUL → TFU May 20, 07:35 UTCMay 20, 07:50 UTC15m
2026-05-20 CSC3995 TFU → KUL May 20, 05:40 UTCMay 20, 05:55 UTC15m
2026-05-19 CSC3910 SIN → TFU May 19, 09:35 UTCMay 20, 04:40 UTC19h 6m
2026-05-19 CSC3910 SIN → TFU May 19, 09:20 UTCMay 20, 04:40 UTC19h 21m
2026-05-19 CSC3909 TFU → SIN May 19, 05:05 UTCMay 19, 06:50 UTC1h 45m
2026-05-18 CSC3909 TFU → SIN May 18, 09:35 UTCMay 19, 06:50 UTC21h 14m
2026-05-18 CSC3996 KUL → TFU May 18, 08:45 UTCMay 19, 06:50 UTC22h 4m
2026-05-18 CSC3996 KUL → TFU May 18, 07:35 UTCMay 18, 07:50 UTC15m
2026-05-18 CSC3995 TFU → KUL May 18, 05:35 UTCMay 18, 05:50 UTC15m
2026-05-17 CSC3995 TFU → KUL May 17, 09:35 UTCMay 18, 04:30 UTC18h 55m
2026-05-17 CSC3962 NRT → TFU May 17, 07:50 UTCMay 18, 04:30 UTC20h 40m
2026-05-17 CSC3961 TFU → NRT May 17, 04:25 UTCMay 17, 06:10 UTC1h 45m
2026-05-16 CSC3961 TFU → NRT May 16, 09:35 UTCMay 17, 06:10 UTC20h 35m
2026-05-16 CSC3961 TFU → NRT May 16, 07:45 UTCMay 17, 06:10 UTC22h 25m
2026-05-16 CSC3961 TFU → NRT May 16, 04:30 UTCMay 16, 06:16 UTC1h 46m
2026-05-10 CSC3962 NRT → TFU May 10, 07:50 UTCMay 10, 10:00 UTC2h 10m
2026-05-10 CSC3961 TFU → NRT May 10, 04:09 UTCMay 10, 05:40 UTC1h 30m
2026-05-09 CSC3961 TFU → NRT May 9, 09:35 UTCMay 10, 05:40 UTC20h 5m
2026-05-09 CSC3962 NRT → TFU May 9, 07:50 UTCMay 10, 05:40 UTC21h 50m
2026-05-09 CSC3961 TFU → NRT May 9, 04:25 UTCMay 9, 05:40 UTC1h 15m
2026-05-06 CSC6788 ZUH → TFU May 6, 04:25 UTCMay 6, 04:35 UTC10m
2026-05-06 CSC6787 TFU → ZUH May 6, 03:05 UTCMay 6, 03:15 UTC10m
2026-05-05 CSC3923 TFU → MLE May 5, 10:15 UTCMay 5, 20:05 UTC9h 50m
2026-05-01 CSC6788 ZUH → TFU May 1, 04:20 UTCMay 1, 04:30 UTC10m
2026-04-30 CSC3910 SIN → TFU Apr 30, 09:30 UTCApr 30, 11:30 UTC2h 0m
2026-04-30 CSC3909 TFU → SIN Apr 30, 05:10 UTCApr 30, 07:35 UTC2h 25m

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-324K page for operator, model, and routing details .

Mode-S 781BE6 frequently asked

What is Mode-S code 781BE6?
781BE6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324K.
Where is Mode-S 781BE6 registered?
Mode-S code 781BE6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781BE6 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781BE6, octal 36015746, decimal 7,871,462.
What flights does 781BE6 operate?
Mode-S 781BE6 has broadcast 14 distinct callsigns, including CSC3961, CSC3909, CSC3962, CSC3910, CSC6788.