Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781FFE

ICAO 24-bit transponder address · allocated to China

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

Hex
781FFE
Octal
36017776
Decimal
7,872,510
Country
CN
Tail
B-32FW
Type
A20N
No current signal · last broadcast 3h ago
Flights observed
95
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 781FFE.

Country allocation

The ICAO 24-bit address 781FFE 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
CSN6074 - 11 2026-07-08
CSN688 - 8 2026-07-06
CSN687 - 7 2026-07-08
CSN638 - 7 2026-07-12
CSN8024 - 5 2026-07-10
CSN8023 - 5 2026-07-10
CSN6358 - 5 2026-07-14
CSN6073 - 5 2026-07-06
CSN3606 - 5 2026-07-13
CSN637 - 4 2026-07-12
CSN8460 - 3 2026-07-12
CSN6146 - 3 2026-07-01
CSN8142 - 2 2026-07-08
CSN8141 - 2 2026-07-08
CSN6405 China Southern Airlines 2 2026-06-03
CSN6357 - 2 2026-07-14
CSN6341 China Southern Airlines 2 2026-04-27
CSN6331 China Southern Airlines 2 2026-05-21
CSN323 - 2 2026-04-19
CSN8459 - 1 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN6358 - Jul 14, 08:50 UTCJul 14, 09:05 UTC15m
2026-07-14 CSN6358 - Jul 14, 06:25 UTCJul 14, 06:35 UTC10m
2026-07-14 CSN6357 - Jul 14, 04:20 UTCJul 14, 04:35 UTC15m
2026-07-13 CSN3606 - Jul 13, 11:00 UTCJul 14, 01:55 UTC14h 55m
2026-07-13 CSN3605 - Jul 13, 03:01 UTCJul 13, 11:15 UTC8h 15m
2026-07-12 CSN638 - Jul 12, 10:30 UTCJul 13, 03:15 UTC16h 45m
2026-07-12 CSN637 - Jul 12, 08:35 UTCJul 12, 08:55 UTC20m
2026-07-12 CSN8460 - Jul 12, 04:45 UTCJul 12, 05:05 UTC20m
2026-07-10 CSN8024 - Jul 10, 11:10 UTCJul 10, 11:40 UTC30m
2026-07-10 CSN8023 - Jul 10, 07:25 UTCJul 10, 09:35 UTC2h 10m
2026-07-09 CSN3606 - Jul 9, 11:55 UTCJul 10, 03:10 UTC15h 15m
2026-07-09 CSN3606 - Jul 9, 02:55 UTCJul 9, 12:15 UTC9h 20m
2026-07-08 CSN8142 - Jul 8, 12:20 UTCJul 9, 03:05 UTC14h 45m
2026-07-08 CSN8141 - Jul 8, 10:30 UTCJul 8, 10:55 UTC25m
2026-07-08 CSN6074 - Jul 8, 04:45 UTCJul 8, 10:00 UTC5h 15m
2026-07-08 CSN687 - Jul 8, 02:35 UTCJul 8, 02:50 UTC15m
2026-07-07 CSN638 - Jul 7, 11:15 UTCJul 8, 02:05 UTC14h 50m
2026-07-07 CSN637 - Jul 7, 09:00 UTCJul 7, 09:20 UTC20m
2026-07-07 CSN8460 - Jul 7, 04:45 UTCJul 7, 08:25 UTC3h 40m
2026-07-06 CSN8459 - Jul 6, 10:25 UTCJul 7, 08:25 UTC22h 0m
2026-07-06 CSN688 - Jul 6, 06:15 UTCJul 6, 06:35 UTC20m
2026-07-06 CSN6073 - Jul 6, 03:50 UTCJul 6, 04:10 UTC20m
2026-07-05 CSN8142 - Jul 5, 12:30 UTCJul 5, 12:50 UTC20m
2026-07-05 CSN8141 - Jul 5, 10:25 UTCJul 5, 10:45 UTC20m
2026-07-05 CSN6074 - Jul 5, 05:05 UTCJul 5, 05:30 UTC25m
2026-07-05 CSN687 - Jul 5, 02:20 UTCJul 5, 02:40 UTC20m
2026-07-04 CSN6364 - Jul 4, 07:30 UTCJul 5, 01:45 UTC18h 15m
2026-07-03 CSN6476 - Jul 3, 17:50 UTCJul 4, 07:40 UTC13h 50m
2026-07-03 CSN6179 - Jul 3, 13:10 UTCJul 3, 13:45 UTC35m
2026-07-03 CSN6358 - Jul 3, 08:45 UTCJul 3, 09:00 UTC15m
2026-07-03 CSN6358 - Jul 3, 06:25 UTCJul 3, 06:40 UTC15m
2026-07-03 CSN6357 - Jul 3, 01:40 UTCJul 3, 01:55 UTC15m
2026-07-01 CSN6146 - Jul 1, 03:45 UTCJul 1, 07:50 UTC4h 5m
2026-06-27 CSN6194 PKX → CGQ Jun 27, 09:19 UTCJun 27, 09:29 UTC10m
2026-06-26 CSN6146 - Jun 26, 03:50 UTCJun 26, 04:00 UTC10m
2026-06-23 CSN5954 CGO → CGQ Jun 23, 05:54 UTCJun 23, 13:24 UTC7h 30m
2026-06-22 CSN6541 - Jun 22, 01:49 UTCJun 22, 02:30 UTC40m
2026-06-09 CSN6168 PKX → CGQ Jun 9, 12:30 UTCJun 9, 12:40 UTC10m
2026-06-09 CSN638 ICN → CGQ Jun 9, 06:00 UTCJun 9, 06:15 UTC15m
2026-06-09 CSN6073 YNJ → ICN Jun 9, 03:40 UTCJun 9, 04:00 UTC20m
2026-06-08 CSN6074 ICN → YNJ Jun 8, 10:20 UTCJun 8, 10:45 UTC25m
2026-06-08 CSN637 CGQ → ICN Jun 8, 08:40 UTCJun 8, 09:00 UTC20m
2026-06-08 CSN688 ICN → CGQ Jun 8, 04:40 UTCJun 8, 05:05 UTC25m
2026-06-08 CSN687 CGQ → ICN Jun 8, 02:25 UTCJun 8, 02:45 UTC20m
2026-06-05 CSN638 ICN → CGQ Jun 5, 05:50 UTCJun 6, 00:10 UTC18h 20m
2026-06-04 CSN6074 ICN → YNJ Jun 4, 10:35 UTCJun 5, 04:05 UTC17h 30m
2026-06-04 CSN637 CGQ → ICN Jun 4, 08:35 UTCJun 4, 09:00 UTC25m
2026-06-04 CSN6146 PKX → CGQ Jun 4, 03:50 UTCJun 4, 04:00 UTC10m
2026-06-03 CSN6405 CGQ → HGH Jun 3, 00:30 UTCJun 3, 09:30 UTC9h 0m
2026-05-30 CSN6074 ICN → YNJ May 30, 04:35 UTCMay 30, 04:55 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-32FW page for operator, model, and routing details .

Mode-S 781FFE frequently asked

What is Mode-S code 781FFE?
781FFE is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32FW.
Where is Mode-S 781FFE registered?
Mode-S code 781FFE is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FFE broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FFE, octal 36017776, decimal 7,872,510.
What flights does 781FFE operate?
Mode-S 781FFE has broadcast 20 distinct callsigns, including CSN6074, CSN688, CSN687, CSN638, CSN8024.