Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781030

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8639 · AIRBUS A-321

Hex
781030
Octal
36010060
Decimal
7,868,464
Country
CN
Tail
B-8639
Type
A321
No current signal · last broadcast 19h ago
Flights observed
55
Distinct callsigns
20
Country
CN
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 781030.

Country allocation

The ICAO 24-bit address 781030 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
CSN5120 China Southern Airlines 6 2026-05-27
CSN5119 China Southern Airlines 5 2026-05-27
CSN3978 China Southern Airlines 3 2026-05-22
CSN6668 China Southern Airlines 2 2026-04-24
CSN3977 China Southern Airlines 2 2026-05-02
CSN3566 China Southern Airlines 2 2026-05-19
CSN3565 China Southern Airlines 2 2026-05-16
CSN3516 China Southern Airlines 2 2026-05-25
CSN3271 China Southern Airlines 2 2026-05-18
CSN8614 China Southern Airlines 1 2026-04-14
CSN8208 China Southern Airlines 1 2026-04-26
CSN8207 China Southern Airlines 1 2026-05-29
CSN8100 China Southern Airlines 1 2026-05-10
CSN8099 China Southern Airlines 1 2026-05-10
CSN8076 China Southern Airlines 1 2026-05-21
CSN8075 China Southern Airlines 1 2026-05-21
CSN6924 China Southern Airlines 1 2026-05-15
CSN6923 China Southern Airlines 1 2026-05-15
CSN6921 China Southern Airlines 1 2026-05-18
CSN6793 China Southern Airlines 1 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN8207 HAK → HGH May 29, 09:35 UTCMay 29, 10:30 UTC55m
2026-05-29 CSN6774 CAN → HAK May 29, 02:40 UTCMay 29, 02:55 UTC15m
2026-05-27 CSN5120 HAK → SZX May 27, 08:40 UTCMay 27, 08:55 UTC15m
2026-05-27 CSN5119 SZX → HAK May 27, 06:29 UTCMay 27, 06:44 UTC15m
2026-05-27 CSN6786 CAN → HAK May 27, 03:45 UTCMay 27, 03:54 UTC10m
2026-05-25 CSN3516 PVG → HAK May 25, 02:35 UTCMay 25, 06:55 UTC4h 20m
2026-05-24 CSN5120 HAK → SZX May 24, 08:50 UTCMay 24, 09:05 UTC15m
2026-05-24 CSN5119 SZX → HAK May 24, 06:30 UTCMay 24, 06:45 UTC15m
2026-05-22 CSN6667 SYX → NKG May 22, 07:20 UTCMay 22, 07:35 UTC15m
2026-05-22 CSN3978 SZX → SYX May 22, 01:40 UTCMay 22, 01:55 UTC15m
2026-05-21 CSN3236 CAN → KWL May 21, 19:55 UTCMay 21, 20:10 UTC15m
2026-05-21 - - May 21, 13:35 UTCMay 21, 19:20 UTC5h 45m
2026-05-21 CSN3235 KWL → CAN May 21, 12:55 UTCMay 21, 13:05 UTC10m
2026-05-21 CSN8076 BKK → SZX May 21, 08:35 UTCMay 21, 09:05 UTC30m
2026-05-21 CSN8075 SZX → BKK May 21, 04:30 UTCMay 21, 06:55 UTC2h 25m
2026-05-20 CSN3827 SZX → NKG May 20, 07:10 UTCMay 20, 07:20 UTC10m
2026-05-20 CSN3465 SZX → CKG May 20, 00:45 UTCMay 20, 00:55 UTC10m
2026-05-19 CSN3154 PEK → SZX May 19, 14:55 UTCMay 19, 15:05 UTC10m
2026-05-19 CSN3189 SZX → PEK May 19, 07:50 UTCMay 19, 08:05 UTC15m
2026-05-19 CSN3566 HFE → SZX May 19, 06:20 UTCMay 19, 06:30 UTC10m
2026-05-18 CSN3271 SZX → CGO May 18, 07:50 UTCMay 18, 08:05 UTC15m
2026-05-18 CSN6921 SZX → HIA May 18, 01:10 UTCMay 18, 01:20 UTC10m
2026-05-17 CSN3209 SZX → WUX May 17, 08:25 UTCMay 17, 08:35 UTC10m
2026-05-17 CSN6591 SZX → NGB May 17, 01:25 UTCMay 17, 01:35 UTC10m
2026-05-16 CSN3271 SZX → CGO May 16, 08:01 UTCMay 16, 08:16 UTC15m
2026-05-16 CSN3566 HFE → SZX May 16, 06:06 UTCMay 16, 06:25 UTC20m
2026-05-16 CSN3565 SZX → HFE May 16, 01:10 UTCMay 16, 01:20 UTC10m
2026-05-15 CSN6924 KMG → SZX May 15, 19:05 UTCMay 15, 19:20 UTC15m
2026-05-15 CSN6923 SZX → KMG May 15, 14:20 UTCMay 15, 14:40 UTC20m
2026-05-10 CSN8100 BKK → CAN May 10, 06:50 UTCMay 10, 07:34 UTC45m
2026-05-10 CSN8099 CAN → BKK May 10, 03:04 UTCMay 10, 05:20 UTC2h 15m
2026-05-09 CSN6790 CAN → HAK May 9, 06:50 UTCMay 9, 07:05 UTC15m
2026-05-05 CSN5120 HAK → SZX May 5, 09:55 UTCMay 5, 10:15 UTC20m
2026-05-05 - - May 5, 07:35 UTCMay 5, 07:55 UTC20m
2026-05-03 CSN3978 SZX → SYX May 3, 01:40 UTCMay 3, 02:00 UTC20m
2026-05-02 CSN3977 SYX → SZX May 2, 23:40 UTCMay 2, 23:55 UTC15m
2026-05-01 CSN3978 SZX → SYX May 1, 01:50 UTCMay 1, 02:05 UTC15m
2026-04-30 CSN3977 SYX → SZX Apr 30, 23:55 UTCMay 1, 00:10 UTC15m
2026-04-28 CSN6765 HAK → PVG Apr 28, 10:00 UTCApr 28, 11:05 UTC1h 5m
2026-04-26 CSN8208 HGH → HAK Apr 26, 09:40 UTCApr 26, 15:00 UTC5h 20m
2026-04-25 CSN6732 CAN → SYX Apr 25, 02:25 UTCApr 25, 02:40 UTC15m
2026-04-24 CSN6668 NKG → SYX Apr 24, 09:10 UTCApr 24, 13:45 UTC4h 35m
2026-04-22 CSN3516 PVG → HAK Apr 22, 01:30 UTCApr 22, 07:10 UTC5h 40m
2026-04-21 CSN5120 HAK → SZX Apr 21, 08:35 UTCApr 21, 08:45 UTC10m
2026-04-21 CSN5119 SZX → HAK Apr 21, 06:30 UTCApr 21, 06:45 UTC15m
2026-04-20 CSN5120 HAK → SZX Apr 20, 09:15 UTCApr 20, 09:35 UTC20m
2026-04-20 CSN5119 SZX → HAK Apr 20, 06:50 UTCApr 20, 07:00 UTC10m
2026-04-19 CSN5120 HAK → SZX Apr 19, 08:35 UTCApr 19, 08:50 UTC15m
2026-04-19 CSN5119 SZX → HAK Apr 19, 06:45 UTCApr 19, 06:55 UTC10m
2026-04-18 CSN6668 - Apr 18, 12:20 UTCApr 18, 12:45 UTC25m

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-8639 page for operator, model, and routing details .

Mode-S 781030 frequently asked

What is Mode-S code 781030?
781030 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8639.
Where is Mode-S 781030 registered?
Mode-S code 781030 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781030 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781030, octal 36010060, decimal 7,868,464.
What flights does 781030 operate?
Mode-S 781030 has broadcast 20 distinct callsigns, including CSN5120, CSN5119, CSN3978, CSN6668, CSN3977.