Apparatus

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sensors Mode-S transponder

781F35

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32DQ · AIRBUS A-321neo

Hex
781F35
Octal
36017465
Decimal
7,872,309
Country
CN
Tail
B-32DQ
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
94
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781F35.

Country allocation

The ICAO 24-bit address 781F35 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
CXA8350 - 8 2026-06-26
CXA8321 - 8 2026-07-06
CXA8349 - 7 2026-06-25
CXA833 Xiamen Airlines 6 2026-06-09
CXA887 Xiamen Airlines 5 2026-06-09
CXA834 Xiamen Airlines 5 2026-06-09
CXA888 Xiamen Airlines 4 2026-06-09
CXA854 - 4 2026-07-10
CXA853 - 4 2026-07-10
CXA8536 - 3 2026-06-30
CXA852 Xiamen Airlines 3 2026-04-14
CXA844 - 3 2026-04-14
CXA843 - 3 2026-04-14
CXA851 Xiamen Airlines 2 2026-04-14
CXA8509 - 2 2026-04-24
CXA8394 - 2 2026-07-12
CXA8393 Xiamen Airlines 2 2026-06-22
CXA8362 Xiamen Airlines 2 2026-05-04
CXA8319 Xiamen Airlines 2 2026-05-08
CXA864 - 1 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 CXA8394 - Jul 12, 03:05 UTCJul 12, 05:20 UTC2h 15m
2026-07-11 CXA8535 - Jul 11, 01:45 UTCJul 11, 02:15 UTC30m
2026-07-10 CXA854 - Jul 10, 05:55 UTCJul 10, 08:10 UTC2h 15m
2026-07-10 CXA853 - Jul 10, 01:45 UTCJul 10, 04:25 UTC2h 40m
2026-07-06 CXA8321 - Jul 6, 00:30 UTCJul 6, 04:30 UTC4h 0m
2026-07-04 CXA8340 - Jul 4, 19:25 UTCJul 4, 19:40 UTC15m
2026-07-01 CXA8070 - Jul 1, 13:15 UTCJul 1, 13:45 UTC30m
2026-06-30 CXA8536 - Jun 30, 06:50 UTCJun 30, 07:20 UTC30m
2026-06-28 CXA864 - Jun 28, 13:29 UTCJun 28, 15:55 UTC2h 25m
2026-06-28 CXA863 - Jun 28, 09:45 UTCJun 28, 12:25 UTC2h 40m
2026-06-27 CXA8395 PKX → CAN Jun 27, 02:29 UTCJun 27, 02:45 UTC15m
2026-06-26 CXA8350 - Jun 26, 15:34 UTCJun 26, 15:49 UTC15m
2026-06-25 CXA8350 - Jun 25, 18:04 UTCJun 25, 18:19 UTC15m
2026-06-25 CXA8349 - Jun 25, 15:29 UTCJun 25, 15:40 UTC10m
2026-06-22 CXA8393 PKX → SYX Jun 22, 02:00 UTCJun 22, 02:19 UTC20m
2026-06-21 CXA8350 SZX → PKX Jun 21, 14:19 UTCJun 21, 14:34 UTC15m
2026-06-21 CXA8349 - Jun 21, 11:40 UTCJun 21, 12:10 UTC30m
2026-06-20 CXA8350 SZX → PKX Jun 20, 13:49 UTCJun 20, 13:59 UTC10m
2026-06-20 CXA8349 - Jun 20, 11:20 UTCJun 20, 11:40 UTC20m
2026-06-19 CXA8350 SZX → PKX Jun 19, 15:54 UTCJun 19, 16:04 UTC10m
2026-06-19 CXA8349 - Jun 19, 13:24 UTCJun 19, 13:44 UTC20m
2026-06-17 CXA8350 SZX → PKX Jun 17, 15:10 UTCJun 17, 15:25 UTC15m
2026-06-16 CXA8536 - Jun 16, 07:09 UTCJun 16, 07:20 UTC10m
2026-06-16 - - Jun 16, 01:35 UTCJun 16, 01:45 UTC10m
2026-06-14 CXA8394 SYX → PKX Jun 14, 05:25 UTCJun 14, 05:35 UTC10m
2026-06-14 CXA8393 PKX → SYX Jun 14, 02:10 UTCJun 14, 02:30 UTC20m
2026-06-09 CXA834 BKK → XMN Jun 9, 11:00 UTCJun 9, 13:15 UTC2h 15m
2026-06-09 CXA833 XMN → BKK Jun 9, 06:55 UTCJun 9, 09:25 UTC2h 30m
2026-06-09 CXA888 TPE → XMN Jun 9, 03:30 UTCJun 9, 04:20 UTC50m
2026-06-09 CXA887 XMN → TPE Jun 9, 01:00 UTCJun 9, 01:25 UTC25m
2026-06-04 CXA8321 HGH → SYX Jun 4, 00:35 UTCJun 4, 04:30 UTC3h 55m
2026-06-01 CXA8315 HGH → HAK Jun 1, 00:35 UTCJun 1, 03:40 UTC3h 5m
2026-05-29 CXA8404 - May 29, 23:35 UTCMay 30, 04:55 UTC5h 20m
2026-05-28 CXA8350 SZX → PKX May 28, 13:50 UTCMay 28, 14:05 UTC15m
2026-05-28 CXA8349 PKX → SZX May 28, 11:35 UTCMay 28, 11:55 UTC20m
2026-05-24 CXA8346 SZX → HGH May 24, 18:35 UTCMay 24, 18:45 UTC10m
2026-05-24 CXA8345 HGH → SZX May 24, 16:30 UTCMay 24, 16:55 UTC25m
2026-05-24 CXA8321 HGH → SYX May 24, 00:30 UTCMay 24, 04:30 UTC4h 0m
2026-05-23 CXA8336 SZX → PKX May 23, 04:35 UTCMay 23, 04:45 UTC10m
2026-05-22 CXA8536 - May 22, 06:55 UTCMay 22, 07:25 UTC30m
2026-05-20 CXA834 BKK → XMN May 20, 10:55 UTCMay 20, 13:10 UTC2h 15m
2026-05-20 CXA833 XMN → BKK May 20, 06:25 UTCMay 20, 09:15 UTC2h 50m
2026-05-17 CXA8321 HGH → SYX May 17, 00:30 UTCMay 17, 04:35 UTC4h 5m
2026-05-16 CXA8322 SYX → HGH May 16, 04:25 UTCMay 17, 00:45 UTC20h 20m
2026-05-16 CXA8321 HGH → SYX May 16, 00:35 UTCMay 16, 04:40 UTC4h 5m
2026-05-15 CXA8321 HGH → SYX May 15, 05:30 UTCMay 16, 04:40 UTC23h 9m
2026-05-13 CXA8321 HGH → SYX May 13, 00:35 UTCMay 13, 04:25 UTC3h 50m
2026-05-11 CXA8307 XMN → SYX May 11, 08:50 UTCMay 11, 12:30 UTC3h 40m
2026-05-10 CXA888 TPE → XMN May 10, 03:40 UTCMay 10, 04:09 UTC30m
2026-05-10 CXA887 XMN → TPE May 10, 00:39 UTCMay 10, 01:39 UTC1h 0m

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

Mode-S 781F35 frequently asked

What is Mode-S code 781F35?
781F35 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32DQ.
Where is Mode-S 781F35 registered?
Mode-S code 781F35 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F35 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 781F35, octal 36017465, decimal 7,872,309.
What flights does 781F35 operate?
Mode-S 781F35 has broadcast 20 distinct callsigns, including CXA8350, CXA8321, CXA8349, CXA833, CXA887.