Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781BF5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-324Q · AIRBUS A-321neo

Hex
781BF5
Octal
36015765
Decimal
7,871,477
Country
CN
Tail
B-324Q
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
50
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781BF5.

Country allocation

The ICAO 24-bit address 781BF5 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
CSN318 China Southern Airlines 9 2026-05-30
CSN317 China Southern Airlines 9 2026-05-30
CSN5097 China Southern Airlines 4 2026-05-03
CSN5098 China Southern Airlines 3 2026-05-03
CSN8010 China Southern Airlines 2 2026-05-29
CSN8009 China Southern Airlines 2 2026-05-29
CSN6028 China Southern Airlines 2 2026-05-21
CSN5004 China Southern Airlines 2 2026-05-09
CSN5003 China Southern Airlines 2 2026-05-08
CSN3194 China Southern Airlines 2 2026-05-29
CSN3193 China Southern Airlines 2 2026-05-29
CSN8930 China Southern Airlines 1 2026-05-21
CSN6714 China Southern Airlines 1 2026-06-01
CSN6082 China Southern Airlines 1 2026-05-22
CSN6081 China Southern Airlines 1 2026-05-22
CSN6027 China Southern Airlines 1 2026-05-19
CSN5068 China Southern Airlines 1 2026-04-23
CSN5067 China Southern Airlines 1 2026-04-23
CSN3902 China Southern Airlines 1 2026-05-03
CSN356 China Southern Airlines 1 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 CSN6714 PKX → SYX Jun 1, 09:50 UTCJun 1, 10:05 UTC15m
2026-05-30 CSN318 GMP → PKX May 30, 04:40 UTCMay 30, 05:05 UTC25m
2026-05-30 CSN317 PKX → GMP May 30, 02:25 UTCMay 30, 02:50 UTC25m
2026-05-29 CSN8010 DAC → PKX May 29, 15:50 UTCMay 29, 16:40 UTC50m
2026-05-29 CSN8009 PKX → DAC May 29, 12:55 UTCMay 29, 14:05 UTC1h 10m
2026-05-29 CSN3193 SZX → PKX May 29, 04:45 UTCMay 29, 04:55 UTC10m
2026-05-29 CSN3194 PKX → SZX May 29, 02:35 UTCMay 29, 02:55 UTC20m
2026-05-24 CSN318 GMP → PKX May 24, 04:30 UTCMay 24, 04:55 UTC25m
2026-05-24 CSN317 PKX → GMP May 24, 02:35 UTCMay 24, 03:00 UTC25m
2026-05-23 CSN318 GMP → PKX May 23, 04:35 UTCMay 23, 05:00 UTC25m
2026-05-23 CSN317 PKX → GMP May 23, 02:40 UTCMay 23, 03:00 UTC20m
2026-05-22 CSN6082 MFM → PKX May 22, 08:30 UTCMay 22, 08:50 UTC20m
2026-05-22 CSN6081 PKX → MFM May 22, 04:10 UTCMay 22, 04:25 UTC15m
2026-05-21 CSN6028 TAS → PKX May 21, 21:50 UTCMay 21, 22:00 UTC10m
2026-05-21 CSN8930 LHW → PKX May 21, 05:05 UTCMay 21, 05:20 UTC15m
2026-05-19 CSN6028 TAS → PKX May 19, 22:15 UTCMay 19, 22:30 UTC15m
2026-05-19 CSN6027 PKX → TAS May 19, 09:25 UTCMay 19, 09:50 UTC25m
2026-05-19 CSN3193 SZX → PKX May 19, 04:55 UTCMay 19, 05:05 UTC10m
2026-05-19 CSN3194 PKX → SZX May 19, 02:50 UTCMay 19, 03:05 UTC15m
2026-05-18 - - May 18, 07:35 UTCMay 18, 07:45 UTC10m
2026-05-11 CSN318 GMP → PKX May 11, 04:40 UTCMay 11, 05:00 UTC20m
2026-05-11 CSN317 PKX → GMP May 11, 02:35 UTCMay 11, 03:00 UTC25m
2026-05-10 CSN356 HKG → PKX May 10, 06:00 UTCMay 10, 06:20 UTC20m
2026-05-10 CSN355 PKX → HKG May 10, 03:20 UTCMay 10, 03:55 UTC35m
2026-05-09 CSN5004 VCV → MHV May 9, 03:10 UTCMay 9, 03:25 UTC15m
2026-05-08 CSN5003 PKX → FRU May 8, 16:05 UTCMay 8, 16:20 UTC15m
2026-05-06 CSN8010 DAC → PKX May 6, 16:05 UTCMay 6, 16:35 UTC30m
2026-05-06 CSN8009 PKX → DAC May 6, 13:55 UTCMay 6, 14:45 UTC50m
2026-05-04 CSN318 GMP → PKX May 4, 04:29 UTCMay 4, 04:50 UTC20m
2026-05-04 CSN317 PKX → GMP May 4, 02:39 UTCMay 4, 03:00 UTC20m
2026-05-03 CSN5098 ALA → PKX May 3, 21:44 UTCMay 3, 22:00 UTC15m
2026-05-03 CSN5097 PKX → ALA May 3, 11:00 UTCMay 3, 11:25 UTC25m
2026-05-03 CSN3902 KMG → PKX May 3, 08:20 UTCMay 3, 08:35 UTC15m
2026-05-02 CSN318 GMP → PKX May 2, 04:35 UTCMay 2, 04:55 UTC20m
2026-05-02 CSN317 PKX → GMP May 2, 02:40 UTCMay 2, 02:45 UTC5m
2026-05-01 CSN5097 PKX → ALA May 1, 10:55 UTCMay 1, 22:05 UTC11h 10m
2026-04-30 CSN5004 VCV → MHV Apr 30, 03:00 UTCApr 30, 03:15 UTC15m
2026-04-29 CSN5003 PKX → FRU Apr 29, 15:45 UTCApr 29, 16:05 UTC20m
2026-04-27 CSN5098 ALA → PKX Apr 27, 21:25 UTCApr 27, 21:40 UTC15m
2026-04-26 CSN318 GMP → PKX Apr 26, 04:35 UTCApr 26, 04:50 UTC15m
2026-04-26 CSN317 PKX → GMP Apr 26, 02:30 UTCApr 26, 02:50 UTC20m
2026-04-25 CSN5098 ALA → PKX Apr 25, 21:15 UTCApr 25, 21:30 UTC15m
2026-04-25 CSN5097 PKX → ALA Apr 25, 10:50 UTCApr 25, 11:15 UTC25m
2026-04-23 CSN5068 FRU → PKX Apr 23, 21:40 UTCApr 23, 21:55 UTC15m
2026-04-23 CSN5067 PKX → FRU Apr 23, 10:40 UTCApr 23, 10:50 UTC10m
2026-04-22 CSN318 GMP → PKX Apr 22, 04:55 UTCApr 22, 05:15 UTC20m
2026-04-22 CSN317 PKX → GMP Apr 22, 02:25 UTCApr 22, 03:00 UTC35m
2026-04-21 CSN5097 PKX → ALA Apr 21, 10:50 UTCApr 21, 21:35 UTC10h 45m
2026-04-15 CSN318 GMP → PKX Apr 15, 05:00 UTCApr 15, 05:15 UTC15m
2026-04-15 CSN317 PKX → GMP Apr 15, 02:30 UTCApr 15, 02:50 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-324Q page for operator, model, and routing details .

Mode-S 781BF5 frequently asked

What is Mode-S code 781BF5?
781BF5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324Q.
Where is Mode-S 781BF5 registered?
Mode-S code 781BF5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781BF5 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 781BF5, octal 36015765, decimal 7,871,477.
What flights does 781BF5 operate?
Mode-S 781BF5 has broadcast 20 distinct callsigns, including CSN318, CSN317, CSN5097, CSN5098, CSN8010.