Apparatus

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sensors Mode-S transponder

781157

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8996 · AIRBUS A-321

Hex
781157
Octal
36010527
Decimal
7,868,759
Country
CN
Tail
B-8996
Type
A321
Broadcasting now · callsign CSN6437 · 32,100 ft
Flights observed
73
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Current position

781157 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781157 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
CSN6220 - 8 2026-07-14
CSN3744 - 7 2026-07-13
CSN5824 China Southern Airlines 6 2026-06-22
CSN8635 - 5 2026-07-18
CSN6346 - 5 2026-07-21
CSN5823 - 4 2026-06-23
CSN5970 China Southern Airlines 3 2026-05-03
CSN6307 China Southern Airlines 2 2026-04-26
CSN6274 - 2 2026-07-19
CSN6202 - 2 2026-07-04
CSN5919 China Southern Airlines 2 2026-05-20
CSN5300 - 2 2026-07-01
CSN3905 - 2 2026-07-01
CSN3743 China Southern Airlines 2 2026-05-20
CSN8711 China Southern Airlines 1 2026-05-17
CSN8636 China Southern Airlines 1 2026-06-05
CSN8315 China Southern Airlines 1 2026-04-29
CSN6499 China Southern Airlines 1 2026-04-25
CSN6268 - 1 2026-07-20
CSN6267 China Southern Airlines 1 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CSN6346 - Jul 21, 01:05 UTCJul 21, 12:30 UTC11h 25m
2026-07-20 CSN6207 HRB → PKX Jul 20, 15:50 UTCJul 20, 16:05 UTC15m
2026-07-20 CSN6208 - Jul 20, 11:50 UTCJul 20, 12:00 UTC10m
2026-07-20 CSN6268 - Jul 20, 09:00 UTCJul 20, 09:10 UTC10m
2026-07-19 CSN6267 PKX → HRB Jul 19, 23:35 UTCJul 19, 23:45 UTC10m
2026-07-19 CSN6274 - Jul 19, 09:05 UTCJul 19, 09:25 UTC20m
2026-07-19 CSN6274 - Jul 19, 06:50 UTCJul 19, 07:10 UTC20m
2026-07-18 CSN8635 - Jul 18, 09:50 UTCJul 19, 02:20 UTC16h 30m
2026-07-18 CSN8635 - Jul 18, 01:15 UTCJul 18, 10:30 UTC9h 16m
2026-07-14 CSN6220 - Jul 14, 04:20 UTCJul 14, 04:30 UTC10m
2026-07-13 CSN3744 - Jul 13, 12:05 UTCJul 13, 12:20 UTC15m
2026-07-13 CSN3744 - Jul 13, 09:40 UTCJul 13, 09:55 UTC15m
2026-07-12 CSN6346 - Jul 12, 11:20 UTCJul 13, 04:40 UTC17h 20m
2026-07-11 CSN6220 - Jul 11, 04:20 UTCJul 11, 04:35 UTC15m
2026-07-09 CSN6141 - Jul 9, 13:30 UTCJul 9, 14:15 UTC45m
2026-07-08 CSN8635 - Jul 8, 01:30 UTCJul 8, 10:50 UTC9h 20m
2026-07-06 CSN6346 - Jul 6, 12:50 UTCJul 7, 00:40 UTC11h 50m
2026-07-05 CSN6220 - Jul 5, 04:15 UTCJul 5, 04:30 UTC15m
2026-07-05 CSN6219 - Jul 5, 02:00 UTCJul 5, 02:10 UTC10m
2026-07-04 CSN6202 - Jul 4, 14:50 UTCJul 4, 15:00 UTC10m
2026-07-04 CSN6218 - Jul 4, 08:25 UTCJul 4, 08:40 UTC15m
2026-07-03 CSN6346 - Jul 3, 11:10 UTCJul 3, 11:35 UTC25m
2026-07-01 CSN3905 - Jul 1, 14:10 UTCJul 1, 14:25 UTC15m
2026-07-01 CSN5300 - Jul 1, 10:05 UTCJul 1, 10:15 UTC10m
2026-07-01 CSN5300 - Jul 1, 07:40 UTCJul 1, 07:55 UTC15m
2026-06-29 CSN5968 - Jun 29, 03:29 UTCJun 29, 03:44 UTC15m
2026-06-28 CSN6220 - Jun 28, 04:29 UTCJun 28, 04:40 UTC10m
2026-06-27 CSN6204 - Jun 27, 00:44 UTCJun 27, 01:00 UTC15m
2026-06-23 CSN5823 - Jun 23, 02:04 UTCJun 23, 15:30 UTC13h 25m
2026-06-22 CSN8635 - Jun 22, 10:00 UTCJun 23, 06:55 UTC20h 55m
2026-06-22 CSN5824 WUH → HRB Jun 22, 06:35 UTCJun 23, 02:20 UTC19h 45m
2026-06-22 CSN5824 WUH → HRB Jun 22, 02:00 UTCJun 22, 10:40 UTC8h 40m
2026-06-21 CSN6220 - Jun 21, 04:20 UTCJun 21, 04:30 UTC10m
2026-06-19 CSN6346 - Jun 19, 11:09 UTCJun 19, 11:30 UTC20m
2026-06-15 CSN6257 HRB → PVG Jun 15, 00:55 UTCJun 15, 13:40 UTC12h 45m
2026-06-12 CSN6220 PKX → HRB Jun 12, 04:25 UTCJun 12, 04:35 UTC10m
2026-06-07 CSN6220 PKX → HRB Jun 7, 04:20 UTCJun 7, 10:55 UTC6h 35m
2026-06-05 CSN8636 HGH → HRB Jun 5, 15:40 UTCJun 6, 09:30 UTC17h 50m
2026-06-05 CSN8635 HRB → HGH Jun 5, 10:00 UTCJun 6, 09:30 UTC23h 30m
2026-06-05 CSN6259 HRB → HGH Jun 5, 01:10 UTCJun 5, 15:45 UTC14h 35m
2026-06-04 CSN6202 PKX → HRB Jun 4, 14:45 UTCJun 5, 10:45 UTC20h 0m
2026-05-21 CSN3744 SZX → HRB May 21, 18:35 UTCMay 21, 18:50 UTC15m
2026-05-21 CSN3744 SZX → HRB May 21, 16:20 UTCMay 21, 16:35 UTC15m
2026-05-21 CSN3566 HFE → SZX May 21, 13:30 UTCMay 21, 13:40 UTC10m
2026-05-21 CSN3565 SZX → HFE May 21, 01:20 UTCMay 21, 01:35 UTC15m
2026-05-20 CSN5919 SZX → CKG May 20, 09:30 UTCMay 20, 09:40 UTC10m
2026-05-20 CSN3743 HRB → SZX May 20, 04:30 UTCMay 20, 04:40 UTC11m
2026-05-17 CSN3744 SZX → HRB May 17, 11:55 UTCMay 17, 12:05 UTC10m
2026-05-17 CSN8711 SZX → HGH May 17, 02:45 UTCMay 17, 03:00 UTC15m
2026-05-16 CSN5819 SZX → TSN May 16, 01:55 UTCMay 16, 02:05 UTC10m

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-8996 page for operator, model, and routing details .

Mode-S 781157 frequently asked

What is Mode-S code 781157?
781157 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8996.
Where is Mode-S 781157 registered?
Mode-S code 781157 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781157 broadcasting right now?
Yes. Mode-S 781157 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781157, octal 36010527, decimal 7,868,759.
What flights does 781157 operate?
Mode-S 781157 has broadcast 20 distinct callsigns, including CSN6220, CSN3744, CSN5824, CSN8635, CSN6346.