Apparatus

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sensors Mode-S transponder

781B79

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-323L · AIRBUS A-320neo

Hex
781B79
Octal
36015571
Decimal
7,871,353
Country
CN
Tail
B-323L
Type
A20N
No current signal · last broadcast Jul 26, 08:20 UTC
Flights observed
53
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 08:20 UTC

Last known position

Most recent position reported by Mode-S 781B79.

Country allocation

The ICAO 24-bit address 781B79 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 20 distinct

Callsign Airline Flights Last seen
CSC3771 - 8 2026-07-18
CSC8004 - 5 2026-06-09
CSC8782 Sichuan Airlines 3 2026-05-26
CSC8003 - 3 2026-06-18
CSC3774 Sichuan Airlines 3 2026-05-31
CSC3773 Sichuan Airlines 3 2026-05-31
CSC3772 Sichuan Airlines 3 2026-07-18
CSC3011 Sichuan Airlines 3 2026-07-25
CSC8784 - 2 2026-07-20
CSC8237 - 2 2026-07-01
CSC8048 - 2 2026-07-20
CSC8047 Sichuan Airlines 2 2026-06-06
CSC8037 - 2 2026-07-14
CSC8007 Sichuan Airlines 2 2026-07-24
CSC8006 - 2 2026-07-17
CSC8786 Sichuan Airlines 1 2026-07-22
CSC8165 Sichuan Airlines 1 2026-06-05
CSC8005 - 1 2026-07-17
CSC6758 - 1 2026-07-05
CSC6660 Sichuan Airlines 1 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSC3702 TAE → DYG Jul 26, 07:55 UTCJul 26, 08:20 UTC25m
2026-07-26 CSC3701 DYG → TAE Jul 26, 06:15 UTCJul 26, 06:35 UTC21m
2026-07-25 CSC3011 HLD → PVG Jul 25, 09:35 UTCJul 25, 10:15 UTC40m
2026-07-24 CSC3011 HLD → PVG Jul 24, 13:10 UTCJul 25, 10:15 UTC21h 5m
2026-07-24 CSC3011 HLD → PVG Jul 24, 10:20 UTCJul 25, 10:15 UTC23h 55m
2026-07-24 CSC8007 CKG → DLC Jul 24, 01:20 UTCJul 24, 13:35 UTC12h 15m
2026-07-23 CSC6660 JHG → TFU Jul 23, 08:25 UTCJul 24, 01:25 UTC17h 0m
2026-07-22 CSC8786 SZX → CKG Jul 22, 12:35 UTCJul 22, 12:45 UTC10m
2026-07-20 CSC8784 - Jul 20, 08:55 UTCJul 20, 09:10 UTC15m
2026-07-20 CSC8048 - Jul 20, 02:40 UTCJul 20, 02:55 UTC15m
2026-07-18 CSC3772 BKK → CKG Jul 18, 13:10 UTCJul 18, 14:30 UTC1h 20m
2026-07-18 CSC3771 - Jul 18, 11:15 UTCJul 18, 11:35 UTC20m
2026-07-17 CSC8006 - Jul 17, 15:35 UTCJul 18, 01:20 UTC9h 45m
2026-07-17 CSC8005 - Jul 17, 13:50 UTCJul 17, 14:00 UTC10m
2026-07-14 CSC8037 - Jul 14, 01:10 UTCJul 14, 10:05 UTC8h 55m
2026-07-13 CSC8037 - Jul 13, 13:40 UTCJul 14, 10:05 UTC20h 25m
2026-07-13 CSC8007 - Jul 13, 10:05 UTCJul 14, 01:35 UTC15h 30m
2026-07-05 CSC6758 - Jul 5, 03:40 UTCJul 5, 03:50 UTC10m
2026-07-02 CSC3158 - Jul 2, 13:10 UTCJul 2, 13:50 UTC40m
2026-07-01 CSC8237 - Jul 1, 04:15 UTCJul 1, 04:30 UTC15m
2026-06-26 CSC8237 - Jun 26, 04:34 UTCJun 26, 04:55 UTC20m
2026-06-18 CSC8003 - Jun 18, 01:40 UTCJun 18, 04:55 UTC3h 15m
2026-06-17 CSC8784 - Jun 17, 11:05 UTCJun 17, 11:20 UTC15m
2026-06-14 CSC3772 BKK → CKG Jun 14, 13:45 UTCJun 14, 14:15 UTC30m
2026-06-14 CSC3771 - Jun 14, 10:55 UTCJun 14, 11:25 UTC30m
2026-06-13 CSC3771 - Jun 13, 13:05 UTCJun 14, 11:25 UTC22h 20m
2026-06-13 CSC3771 - Jun 13, 01:30 UTCJun 13, 11:45 UTC10h 14m
2026-06-12 CSC3771 - Jun 12, 14:35 UTCJun 13, 11:45 UTC21h 9m
2026-06-12 CSC3772 BKK → CKG Jun 12, 13:35 UTCJun 13, 11:45 UTC22h 9m
2026-06-12 CSC3771 - Jun 12, 01:05 UTCJun 12, 11:30 UTC10h 25m
2026-06-11 CSC3771 - Jun 11, 13:05 UTCJun 12, 11:30 UTC22h 25m
2026-06-11 CSC3771 CKG → BKK Jun 11, 01:00 UTCJun 11, 11:30 UTC10h 30m
2026-06-09 CSC8004 - Jun 9, 01:30 UTCJun 9, 13:15 UTC11h 45m
2026-06-08 CSC8004 - Jun 8, 13:25 UTCJun 9, 03:40 UTC14h 15m
2026-06-08 CSC8004 - Jun 8, 03:20 UTCJun 9, 01:35 UTC22h 15m
2026-06-08 CSC8003 - Jun 8, 01:20 UTCJun 8, 13:30 UTC12h 10m
2026-06-06 CSC8048 ZUH → CKG Jun 6, 06:10 UTCJun 6, 06:25 UTC15m
2026-06-06 CSC8047 CKG → ZUH Jun 6, 04:45 UTCJun 6, 04:55 UTC10m
2026-06-06 CSC8047 CKG → ZUH Jun 6, 00:45 UTCJun 6, 01:05 UTC20m
2026-06-05 CSC8165 CKG → HRB Jun 5, 02:00 UTCJun 5, 02:15 UTC15m
2026-06-02 CSC8004 - Jun 2, 03:40 UTCJun 2, 03:55 UTC15m
2026-06-02 CSC8003 - Jun 2, 01:50 UTCJun 2, 02:00 UTC10m
2026-05-31 CSC3774 KUL → CKG May 31, 17:00 UTCMay 31, 19:20 UTC2h 20m
2026-05-31 CSC3773 CKG → KUL May 31, 13:05 UTCMay 31, 15:30 UTC2h 25m
2026-05-30 CSC8004 - May 30, 03:40 UTCMay 30, 13:25 UTC9h 45m
2026-05-29 CSC3774 KUL → CKG May 29, 17:55 UTCMay 30, 02:06 UTC8h 11m
2026-05-29 CSC3774 KUL → CKG May 29, 16:55 UTCMay 29, 17:05 UTC10m
2026-05-29 CSC3773 CKG → KUL May 29, 15:00 UTCMay 29, 15:25 UTC25m
2026-05-29 CSC3773 CKG → KUL May 29, 01:55 UTCMay 29, 13:45 UTC11h 50m
2026-05-26 CSC8782 SZX → CKG May 26, 02:29 UTCMay 26, 02:44 UTC15m

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-323L page for operator, model, and routing details .

Mode-S 781B79 frequently asked

What is Mode-S code 781B79?
781B79 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-323L.
Where is Mode-S 781B79 registered?
Mode-S code 781B79 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B79 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B79, octal 36015571, decimal 7,871,353.
What flights does 781B79 operate?
Mode-S 781B79 has broadcast 20 distinct callsigns, including CSC3771, CSC8004, CSC8782, CSC8003, CSC3774.