Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781FA5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32EW · AIRBUS A-350-900

Hex
781FA5
Octal
36017645
Decimal
7,872,421
Country
CN
Tail
B-32EW
Type
A359
No current signal · last broadcast 8h ago
Flights observed
152
Distinct callsigns
19
Country
CN
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 781FA5.

Country allocation

The ICAO 24-bit address 781FA5 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 19 distinct

Callsign Airline Flights Last seen
CSN674 - 29 2026-07-14
CSN673 - 23 2026-07-13
CSN346 - 21 2026-07-08
CSN345 China Southern Airlines 18 2026-07-07
CSN306 China Southern Airlines 15 2026-05-28
CSN350 - 8 2026-06-30
CSN349 - 8 2026-06-30
CSN305 China Southern Airlines 7 2026-05-28
CSN322 - 6 2026-07-01
CSN321 China Southern Airlines 3 2026-06-30
CSN6902 - 2 2026-06-23
CSN6901 - 2 2026-06-24
CSN655 - 2 2026-06-27
CSN348 China Southern Airlines 2 2026-06-29
CSN347 China Southern Airlines 2 2026-06-28
CSN656 - 1 2026-06-27
CSN3999 China Southern Airlines 1 2026-06-02
CSN3904 - 1 2026-07-10
CSN3122 China Southern Airlines 1 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN674 - Jul 14, 05:00 UTCJul 14, 05:10 UTC10m
2026-07-13 CSN674 - Jul 13, 20:10 UTCJul 14, 02:35 UTC6h 25m
2026-07-13 CSN673 - Jul 13, 09:50 UTCJul 13, 16:45 UTC6h 55m
2026-07-13 CSN673 - Jul 13, 06:35 UTCJul 13, 06:50 UTC15m
2026-07-10 CSN3904 - Jul 10, 14:15 UTCJul 10, 14:30 UTC15m
2026-07-10 CSN674 - Jul 10, 05:25 UTCJul 10, 05:40 UTC15m
2026-07-09 CSN674 - Jul 9, 20:30 UTCJul 10, 02:55 UTC6h 25m
2026-07-09 CSN673 - Jul 9, 07:05 UTCJul 9, 17:15 UTC10h 10m
2026-07-08 CSN346 - Jul 8, 04:35 UTCJul 8, 04:45 UTC10m
2026-07-07 CSN346 - Jul 7, 20:10 UTCJul 8, 02:10 UTC6h 0m
2026-07-07 CSN345 PEK → AMS Jul 7, 06:55 UTCJul 7, 16:10 UTC9h 15m
2026-07-05 CSN674 LHR → PKX Jul 5, 05:10 UTCJul 5, 05:25 UTC15m
2026-07-04 CSN674 LHR → PKX Jul 4, 20:30 UTCJul 5, 02:50 UTC6h 20m
2026-07-04 CSN673 - Jul 4, 06:40 UTCJul 4, 16:35 UTC9h 55m
2026-07-03 CSN674 LHR → PKX Jul 3, 05:05 UTCJul 3, 05:15 UTC10m
2026-07-02 CSN674 LHR → PKX Jul 2, 20:35 UTCJul 3, 02:40 UTC6h 5m
2026-07-02 CSN673 - Jul 2, 10:00 UTCJul 2, 17:10 UTC7h 10m
2026-07-01 CSN322 - Jul 1, 09:20 UTCJul 1, 09:55 UTC35m
2026-07-01 CSN322 - Jul 1, 00:30 UTCJul 1, 08:30 UTC8h 0m
2026-06-30 CSN321 CAN → MEL Jun 30, 13:50 UTCJun 30, 22:30 UTC8h 40m
2026-06-30 CSN350 - Jun 30, 08:35 UTCJun 30, 08:45 UTC10m
2026-06-30 CSN350 - Jun 30, 06:05 UTCJun 30, 06:20 UTC15m
2026-06-30 CSN349 - Jun 30, 04:00 UTCJun 30, 04:30 UTC30m
2026-06-29 CSN348 CDG → CAN Jun 29, 10:40 UTCJun 29, 16:55 UTC6h 15m
2026-06-28 CSN347 CAN → CDG Jun 28, 21:50 UTCJun 29, 04:55 UTC7h 5m
2026-06-27 CSN656 - Jun 27, 18:29 UTCJun 27, 22:04 UTC3h 35m
2026-06-27 CSN655 - Jun 27, 14:54 UTCJun 27, 15:34 UTC40m
2026-06-27 CSN655 - Jun 27, 08:29 UTCJun 27, 13:35 UTC5h 5m
2026-06-24 CSN6901 - Jun 24, 04:50 UTCJun 24, 05:05 UTC15m
2026-06-23 CSN6902 - Jun 23, 07:29 UTCJun 23, 08:00 UTC30m
2026-06-23 CSN346 - Jun 23, 04:29 UTCJun 23, 04:45 UTC15m
2026-06-22 CSN346 - Jun 22, 19:54 UTCJun 23, 01:59 UTC6h 5m
2026-06-22 CSN345 PEK → AMS Jun 22, 06:39 UTCJun 22, 16:05 UTC9h 25m
2026-06-21 CSN6901 - Jun 21, 04:44 UTCJun 21, 04:54 UTC10m
2026-06-20 CSN6902 - Jun 20, 07:24 UTCJun 20, 07:49 UTC25m
2026-06-19 CSN346 - Jun 19, 20:19 UTCJun 19, 22:39 UTC2h 20m
2026-06-19 CSN345 PEK → AMS Jun 19, 10:44 UTCJun 19, 16:55 UTC6h 10m
2026-06-17 CSN674 LHR → PKX Jun 17, 20:30 UTCJun 18, 02:55 UTC6h 25m
2026-06-17 CSN673 - Jun 17, 09:55 UTCJun 17, 16:40 UTC6h 45m
2026-06-15 CSN674 LHR → PKX Jun 15, 20:15 UTCJun 16, 02:45 UTC6h 30m
2026-06-15 CSN673 - Jun 15, 09:49 UTCJun 15, 16:35 UTC6h 45m
2026-06-13 CSN674 LHR → PKX Jun 13, 20:20 UTCJun 14, 02:50 UTC6h 30m
2026-06-13 CSN673 - Jun 13, 06:40 UTCJun 13, 16:20 UTC9h 40m
2026-06-12 CSN674 LHR → PKX Jun 12, 05:30 UTCJun 12, 05:45 UTC15m
2026-06-11 CSN674 LHR → PKX Jun 11, 20:30 UTCJun 11, 23:10 UTC2h 40m
2026-06-11 CSN673 PKX → LHR Jun 11, 06:40 UTCJun 11, 16:40 UTC10h 0m
2026-06-10 CSN3122 PKX → CAN Jun 10, 09:50 UTCJun 10, 10:00 UTC10m
2026-06-10 CSN674 LHR → PKX Jun 10, 05:15 UTCJun 10, 05:25 UTC10m
2026-06-09 CSN674 LHR → PKX Jun 9, 20:20 UTCJun 10, 02:40 UTC6h 20m
2026-06-09 CSN673 PKX → LHR Jun 9, 06:40 UTCJun 9, 15:50 UTC9h 10m

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

Mode-S 781FA5 frequently asked

What is Mode-S code 781FA5?
781FA5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32EW.
Where is Mode-S 781FA5 registered?
Mode-S code 781FA5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FA5 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FA5, octal 36017645, decimal 7,872,421.
What flights does 781FA5 operate?
Mode-S 781FA5 has broadcast 19 distinct callsigns, including CSN674, CSN673, CSN346, CSN345, CSN306.