Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 Jul 26, 19:15 UTC
Flights observed
161
Distinct callsigns
18
Country
CN
Last broadcast
Jul 26, 19:15 UTC

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 18 distinct

Callsign Airline Flights Last seen
CSC3909 Sichuan Airlines 41 2026-07-26
CSC3910 Sichuan Airlines 22 2026-07-26
CSC3961 - 21 2026-06-30
CSC3995 Sichuan Airlines 14 2026-07-24
CSC3962 - 13 2026-07-01
CSC6788 Sichuan Airlines 10 2026-07-24
CSC3985 Sichuan Airlines 9 2026-06-26
CSC3924 - 9 2026-07-14
CSC3996 - 5 2026-07-16
CSC3986 - 4 2026-07-10
CSC3923 - 4 2026-06-26
CSC6787 Sichuan Airlines 2 2026-05-06
CSC3993 Sichuan Airlines 2 2026-05-25
CSC6461 - 1 2026-07-09
CSC3994 Sichuan Airlines 1 2026-05-25
CSC3938 - 1 2026-07-01
CSC3937 Sichuan Airlines 1 2026-07-01
CSC3931 Sichuan Airlines 1 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSC3910 SIN → TFU Jul 26, 09:15 UTCJul 26, 19:15 UTC10h 0m
2026-07-26 CSC3909 TFU → SIN Jul 26, 04:15 UTCJul 26, 07:15 UTC3h 1m
2026-07-25 CSC3909 TFU → SIN Jul 25, 09:45 UTCJul 26, 07:15 UTC21h 31m
2026-07-25 CSC3909 TFU → SIN Jul 25, 07:35 UTCJul 26, 07:15 UTC23h 41m
2026-07-24 CSC3995 TFU → KUL Jul 24, 19:55 UTCJul 25, 06:10 UTC10h 15m
2026-07-24 CSC3995 TFU → KUL Jul 24, 09:10 UTCJul 25, 05:25 UTC20h 15m
2026-07-24 CSC6788 ZUH → TFU Jul 24, 04:10 UTCJul 25, 03:15 UTC23h 5m
2026-07-23 CSC3931 TFU → HKT Jul 23, 08:45 UTCJul 23, 14:35 UTC5h 50m
2026-07-21 CSC3910 SIN → TFU Jul 21, 09:10 UTCJul 21, 12:10 UTC3h 0m
2026-07-21 CSC3909 TFU → SIN Jul 21, 04:20 UTCJul 21, 07:30 UTC3h 10m
2026-07-20 CSC3909 TFU → SIN Jul 20, 10:15 UTCJul 21, 07:30 UTC21h 15m
2026-07-20 CSC3909 TFU → SIN Jul 20, 07:40 UTCJul 21, 07:30 UTC23h 49m
2026-07-20 CSC3995 - Jul 20, 05:45 UTCJul 20, 06:10 UTC25m
2026-07-19 CSC3995 - Jul 19, 09:35 UTCJul 20, 04:35 UTC19h 0m
2026-07-19 CSC3910 SIN → TFU Jul 19, 09:05 UTCJul 20, 04:35 UTC19h 30m
2026-07-19 CSC3909 TFU → SIN Jul 19, 04:25 UTCJul 19, 07:25 UTC3h 0m
2026-07-18 CSC3909 TFU → SIN Jul 18, 09:35 UTCJul 19, 07:25 UTC21h 50m
2026-07-18 CSC3909 TFU → SIN Jul 18, 08:10 UTCJul 19, 07:25 UTC23h 15m
2026-07-18 CSC3995 - Jul 18, 05:45 UTCJul 18, 06:10 UTC25m
2026-07-17 CSC3995 - Jul 17, 09:35 UTCJul 18, 04:50 UTC19h 16m
2026-07-17 CSC3995 - Jul 17, 09:20 UTCJul 18, 04:50 UTC19h 31m
2026-07-17 CSC3909 TFU → SIN Jul 17, 04:25 UTCJul 17, 07:40 UTC3h 15m
2026-07-16 CSC3909 TFU → SIN Jul 16, 11:34 UTCJul 17, 07:40 UTC20h 5m
2026-07-16 CSC3909 TFU → SIN Jul 16, 10:10 UTCJul 17, 07:40 UTC21h 30m
2026-07-16 CSC3996 - Jul 16, 08:40 UTCJul 17, 05:30 UTC20h 50m
2026-07-15 CSC3995 - Jul 15, 13:20 UTCJul 16, 07:15 UTC17h 55m
2026-07-14 CSC3924 - Jul 14, 10:00 UTCJul 14, 20:10 UTC10h 10m
2026-07-10 CSC3986 - Jul 10, 09:10 UTCJul 10, 20:20 UTC11h 10m
2026-07-09 CSC6461 - Jul 9, 08:10 UTCJul 9, 08:30 UTC20m
2026-07-03 CSC3910 - Jul 3, 09:25 UTCJul 3, 12:30 UTC3h 5m
2026-07-03 CSC3909 - Jul 3, 05:05 UTCJul 3, 07:25 UTC2h 20m
2026-07-01 CSC3938 - Jul 1, 19:45 UTCJul 1, 19:55 UTC10m
2026-07-01 CSC3937 TFU → BKK Jul 1, 16:45 UTCJul 1, 17:00 UTC15m
2026-07-01 CSC3962 - Jul 1, 08:00 UTCJul 1, 15:50 UTC7h 50m
2026-06-30 CSC3961 - Jun 30, 18:25 UTCJul 1, 05:50 UTC11h 25m
2026-06-30 CSC3962 - Jun 30, 07:55 UTCJun 30, 17:00 UTC9h 5m
2026-06-29 CSC3961 - Jun 29, 11:35 UTCJun 30, 05:50 UTC18h 16m
2026-06-29 CSC3910 - Jun 29, 09:34 UTCJun 30, 05:50 UTC20h 16m
2026-06-29 CSC3910 - Jun 29, 09:14 UTCJun 30, 05:50 UTC20h 36m
2026-06-28 CSC3909 - Jun 28, 18:25 UTCJun 29, 07:15 UTC12h 50m
2026-06-28 CSC3962 - Jun 28, 07:50 UTCJun 28, 17:10 UTC9h 20m
2026-06-27 CSC3924 - Jun 27, 11:35 UTCJun 28, 06:00 UTC18h 25m
2026-06-27 CSC3924 - Jun 27, 10:54 UTCJun 28, 06:00 UTC19h 5m
2026-06-26 CSC3924 - Jun 26, 23:39 UTCJun 27, 20:39 UTC21h 0m
2026-06-26 CSC3923 - Jun 26, 13:34 UTCJun 27, 13:30 UTC23h 55m
2026-06-26 CSC3985 TFU → DPS Jun 26, 13:24 UTCJun 27, 11:30 UTC22h 5m
2026-06-24 CSC3985 TFU → DPS Jun 24, 09:00 UTCJun 24, 19:59 UTC11h 0m
2026-06-21 CSC3986 DPS → TFU Jun 21, 09:00 UTCJun 21, 20:09 UTC11h 10m
2026-06-21 CSC6788 - Jun 21, 04:10 UTCJun 21, 04:20 UTC10m
2026-06-18 CSC3910 - Jun 18, 09:15 UTCJun 18, 11:15 UTC2h 0m

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 Jul 26, 19:15 UTC.
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 18 distinct callsigns, including CSC3909, CSC3910, CSC3961, CSC3995, CSC3962.