Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781FFC

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32FU · AIRBUS A-320neo

Hex
781FFC
Octal
36017774
Decimal
7,872,508
Country
CN
Tail
B-32FU
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
67
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781FFC.

Country allocation

The ICAO 24-bit address 781FFC 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
CSN5049 China Southern Airlines 9 2026-07-24
CSN8360 China Southern Airlines 8 2026-07-26
CSN8359 China Southern Airlines 8 2026-07-26
CSN5050 China Southern Airlines 7 2026-07-24
CSN6177 China Southern Airlines 4 2026-07-23
CSN5588 China Southern Airlines 4 2026-06-13
CSN3770 - 3 2026-05-29
CSN3066 China Southern Airlines 3 2026-05-12
CSN3065 China Southern Airlines 3 2026-05-12
CSN8088 - 2 2026-07-21
CSN8087 - 2 2026-07-21
CSN5587 China Southern Airlines 2 2026-06-13
CSN5470 - 2 2026-06-14
CSN3502 China Southern Airlines 2 2026-06-15
CSN8234 China Southern Airlines 1 2026-07-25
CSN6929 - 1 2026-07-09
CSN6770 China Southern Airlines 1 2026-07-24
CSN6599 China Southern Airlines 1 2026-07-24
CSN5807 - 1 2026-07-07
CSN5542 - 1 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN8360 HAN → CSX Jul 26, 15:15 UTCJul 26, 15:30 UTC15m
2026-07-26 CSN8359 CSX → HAN Jul 26, 12:00 UTCJul 26, 12:10 UTC10m
2026-07-25 CSN8234 TFU → CAN Jul 25, 12:25 UTCJul 25, 12:40 UTC15m
2026-07-24 CSN5050 KUL → CSX Jul 24, 19:10 UTCJul 24, 22:30 UTC3h 20m
2026-07-24 CSN5049 CSX → KUL Jul 24, 14:20 UTCJul 24, 17:40 UTC3h 20m
2026-07-24 CSN6770 PKX → CSX Jul 24, 09:40 UTCJul 24, 10:05 UTC25m
2026-07-24 CSN6599 CSX → PKX Jul 24, 06:55 UTCJul 24, 07:20 UTC25m
2026-07-23 CSN8360 - Jul 23, 14:25 UTCJul 23, 14:40 UTC15m
2026-07-23 CSN8359 - Jul 23, 12:40 UTCJul 23, 12:50 UTC10m
2026-07-23 CSN6177 CSX → CGQ Jul 23, 02:15 UTCJul 23, 02:35 UTC20m
2026-07-21 CSN8088 - Jul 21, 18:50 UTCJul 21, 22:15 UTC3h 25m
2026-07-21 CSN8087 - Jul 21, 14:05 UTCJul 21, 17:20 UTC3h 15m
2026-07-19 CSN5050 - Jul 19, 19:05 UTCJul 19, 21:50 UTC2h 45m
2026-07-19 CSN5049 CSX → KUL Jul 19, 17:15 UTCJul 19, 17:30 UTC15m
2026-07-19 CSN5049 CSX → KUL Jul 19, 14:40 UTCJul 19, 15:00 UTC20m
2026-07-18 CSN8360 - Jul 18, 14:25 UTCJul 18, 14:35 UTC10m
2026-07-18 CSN8359 - Jul 18, 12:15 UTCJul 18, 12:40 UTC25m
2026-07-17 CSN5050 - Jul 17, 19:09 UTCJul 18, 03:05 UTC7h 56m
2026-07-17 CSN5049 - Jul 17, 14:30 UTCJul 17, 17:50 UTC3h 20m
2026-07-15 CSN5050 - Jul 15, 19:10 UTCJul 16, 12:34 UTC17h 25m
2026-07-15 CSN5049 - Jul 15, 17:20 UTCJul 15, 17:40 UTC20m
2026-07-15 CSN5049 - Jul 15, 14:50 UTCJul 15, 15:10 UTC20m
2026-07-14 CSN8360 - Jul 14, 14:40 UTCJul 14, 14:55 UTC15m
2026-07-14 CSN8359 - Jul 14, 12:30 UTCJul 14, 12:40 UTC10m
2026-07-13 CSN5050 - Jul 13, 19:25 UTCJul 14, 03:15 UTC7h 50m
2026-07-13 CSN5049 - Jul 13, 14:45 UTCJul 13, 17:45 UTC3h 0m
2026-07-12 CSN8360 - Jul 12, 15:30 UTCJul 12, 15:45 UTC15m
2026-07-12 CSN8359 - Jul 12, 13:01 UTCJul 12, 13:30 UTC30m
2026-07-11 CSN8088 - Jul 11, 20:25 UTCJul 11, 23:45 UTC3h 20m
2026-07-11 CSN8087 - Jul 11, 15:50 UTCJul 11, 19:15 UTC3h 25m
2026-07-09 CSN6929 - Jul 9, 11:10 UTCJul 9, 15:30 UTC4h 20m
2026-07-07 CSN8360 - Jul 7, 14:40 UTCJul 7, 15:05 UTC25m
2026-07-07 CSN8359 - Jul 7, 12:25 UTCJul 7, 13:00 UTC35m
2026-07-07 CSN5807 - Jul 7, 02:45 UTCJul 7, 03:05 UTC20m
2026-07-04 CSN8360 - Jul 4, 14:30 UTCJul 4, 14:50 UTC20m
2026-07-04 CSN8359 - Jul 4, 12:25 UTCJul 4, 12:50 UTC25m
2026-06-21 CSN8360 HAN → CSX Jun 21, 16:34 UTCJun 21, 16:59 UTC25m
2026-06-21 CSN8359 CSX → HAN Jun 21, 11:55 UTCJun 21, 12:49 UTC55m
2026-06-15 CSN3502 HGH → CAN Jun 15, 14:24 UTCJun 15, 14:34 UTC10m
2026-06-14 CSN5470 - Jun 14, 05:30 UTCJun 14, 06:00 UTC30m
2026-06-13 CSN5588 ZUH → HGH Jun 13, 13:45 UTCJun 13, 14:05 UTC20m
2026-06-13 CSN5587 HGH → ZUH Jun 13, 12:25 UTCJun 13, 12:40 UTC15m
2026-06-05 CSN5050 KUL → CSX Jun 5, 19:05 UTCJun 5, 22:00 UTC2h 55m
2026-06-05 CSN5049 CSX → KUL Jun 5, 14:15 UTCJun 5, 17:40 UTC3h 25m
2026-05-29 CSN5588 ZUH → HGH May 29, 14:20 UTCMay 29, 14:30 UTC10m
2026-05-29 CSN5587 HGH → ZUH May 29, 10:45 UTCMay 29, 11:35 UTC50m
2026-05-29 CSN3511 CAN → HGH May 29, 05:25 UTCMay 29, 05:35 UTC10m
2026-05-29 CSN3770 - May 29, 00:55 UTCMay 29, 01:15 UTC20m
2026-05-28 CSN6177 CSX → CGQ May 28, 01:55 UTCMay 28, 02:15 UTC20m
2026-05-27 CSN6177 CSX → CGQ May 27, 01:54 UTCMay 27, 02:14 UTC20m

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-32FU page for operator, model, and routing details .

Mode-S 781FFC frequently asked

What is Mode-S code 781FFC?
781FFC is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32FU.
Where is Mode-S 781FFC registered?
Mode-S code 781FFC is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FFC broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FFC, octal 36017774, decimal 7,872,508.
What flights does 781FFC operate?
Mode-S 781FFC has broadcast 20 distinct callsigns, including CSN5049, CSN8360, CSN8359, CSN5050, CSN6177.