Apparatus

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sensors Mode-S transponder

781F7D

ICAO 24-bit transponder address · allocated to China

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

Hex
781F7D
Octal
36017575
Decimal
7,872,381
Country
CN
Tail
B-32EL
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
88
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781F7D.

Country allocation

The ICAO 24-bit address 781F7D 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
CXA833 - 9 2026-07-04
CXA8349 - 7 2026-06-23
CXA834 - 7 2026-07-04
CXA8350 - 6 2026-07-09
CXA887 - 5 2026-07-03
CXA863 - 4 2026-07-06
CXA8816 - 3 2026-07-16
CXA864 - 3 2026-07-06
CXA8437 - 3 2026-06-27
CXA8339 - 3 2026-06-30
CXA8335 Xiamen Airlines 3 2026-06-10
CXA8322 - 3 2026-07-10
CXA8315 Xiamen Airlines 3 2026-05-17
CXA8402 Xiamen Airlines 2 2026-06-09
CXA8393 - 2 2026-06-27
CXA8388 Xiamen Airlines 2 2026-06-04
CXA8387 Xiamen Airlines 2 2026-06-04
CXA8359 - 2 2026-07-13
CXA8321 - 2 2026-06-14
CXA888 Xiamen Airlines 1 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 CXA8816 - Jul 16, 09:35 UTCJul 16, 13:15 UTC3h 40m
2026-07-16 - - Jul 16, 02:20 UTCJul 16, 02:35 UTC15m
2026-07-13 CXA8359 - Jul 13, 11:40 UTCJul 14, 00:45 UTC13h 5m
2026-07-12 CXA8360 - Jul 12, 14:10 UTCJul 12, 14:30 UTC20m
2026-07-10 CXA8322 - Jul 10, 12:35 UTCJul 11, 04:30 UTC15h 56m
2026-07-09 CXA8350 - Jul 9, 15:05 UTCJul 9, 15:20 UTC15m
2026-07-08 CXA8319 - Jul 8, 01:35 UTCJul 8, 01:45 UTC10m
2026-07-06 CXA864 - Jul 6, 13:05 UTCJul 6, 15:25 UTC2h 20m
2026-07-06 CXA863 - Jul 6, 10:40 UTCJul 6, 11:40 UTC1h 0m
2026-07-06 CXA863 - Jul 6, 08:45 UTCJul 6, 08:55 UTC10m
2026-07-05 CXA8816 - Jul 5, 12:30 UTCJul 5, 13:20 UTC50m
2026-07-04 CXA834 - Jul 4, 10:40 UTCJul 4, 13:10 UTC2h 30m
2026-07-04 CXA833 - Jul 4, 03:55 UTCJul 4, 09:25 UTC5h 30m
2026-07-03 CXA887 - Jul 3, 07:35 UTCJul 4, 02:05 UTC18h 30m
2026-07-03 CXA887 - Jul 3, 04:00 UTCJul 4, 02:05 UTC22h 5m
2026-07-02 CXA834 - Jul 2, 11:40 UTCJul 3, 02:10 UTC14h 30m
2026-07-02 CXA833 TPE → BKK Jul 2, 03:50 UTCJul 2, 10:20 UTC6h 30m
2026-07-02 CXA887 - Jul 2, 01:35 UTCJul 2, 02:05 UTC30m
2026-06-30 CXA8339 - Jun 30, 11:35 UTCJul 1, 02:25 UTC14h 50m
2026-06-27 CXA8437 - Jun 27, 10:29 UTCJun 27, 10:45 UTC15m
2026-06-27 CXA8394 SYX → PKX Jun 27, 04:49 UTCJun 27, 05:15 UTC25m
2026-06-27 CXA8393 - Jun 27, 02:04 UTCJun 27, 02:20 UTC15m
2026-06-24 CXA8437 - Jun 24, 10:10 UTCJun 24, 10:30 UTC20m
2026-06-24 CXA8393 PKX → SYX Jun 24, 02:05 UTCJun 24, 02:24 UTC20m
2026-06-23 CXA8350 - Jun 23, 13:59 UTCJun 23, 14:10 UTC10m
2026-06-23 CXA8349 - Jun 23, 11:35 UTCJun 23, 11:54 UTC20m
2026-06-20 CXA8568 - Jun 20, 07:24 UTCJun 20, 07:34 UTC10m
2026-06-18 CXA8812 - Jun 18, 06:45 UTCJun 18, 07:25 UTC40m
2026-06-14 CXA8321 - Jun 14, 00:25 UTCJun 14, 04:05 UTC3h 40m
2026-06-12 CXA8816 SYX → XMN Jun 12, 09:40 UTCJun 12, 12:55 UTC3h 15m
2026-06-11 CXA8350 SZX → PKX Jun 11, 14:10 UTCJun 11, 14:20 UTC10m
2026-06-11 CXA8349 PKX → SZX Jun 11, 11:55 UTCJun 11, 12:15 UTC20m
2026-06-11 CXA8349 PKX → SZX Jun 11, 09:40 UTCJun 11, 10:10 UTC30m
2026-06-10 CXA8339 PKX → CAN Jun 10, 09:05 UTCJun 10, 09:20 UTC15m
2026-06-10 CXA8335 PKX → SZX Jun 10, 02:00 UTCJun 10, 02:25 UTC25m
2026-06-09 CXA8402 TFU → XMN Jun 9, 05:45 UTCJun 9, 06:00 UTC15m
2026-06-08 CXA8437 FOC → KMG Jun 8, 10:05 UTCJun 9, 06:00 UTC19h 55m
2026-06-07 CXA8350 SZX → PKX Jun 7, 15:10 UTCJun 7, 15:25 UTC15m
2026-06-07 CXA8349 PKX → SZX Jun 7, 13:05 UTCJun 7, 13:25 UTC20m
2026-06-07 CXA8349 PKX → SZX Jun 7, 10:30 UTCJun 7, 10:45 UTC15m
2026-06-06 CXA8339 PKX → CAN Jun 6, 09:15 UTCJun 6, 09:24 UTC10m
2026-06-05 CXA8438 TFU → PKX Jun 5, 17:00 UTCJun 5, 17:10 UTC10m
2026-06-04 CXA8388 SZX → HGH Jun 4, 07:40 UTCJun 4, 07:50 UTC10m
2026-06-04 CXA8387 HGH → SZX Jun 4, 05:25 UTCJun 4, 06:10 UTC45m
2026-06-03 CXA8388 SZX → HGH Jun 3, 06:40 UTCJun 3, 06:50 UTC10m
2026-06-03 CXA8387 HGH → SZX Jun 3, 04:30 UTCJun 3, 04:50 UTC20m
2026-05-23 CXA834 BKK → XMN May 23, 10:50 UTCMay 23, 13:00 UTC2h 10m
2026-05-23 CXA833 XMN → BKK May 23, 06:40 UTCMay 23, 09:05 UTC2h 25m
2026-05-18 CXA8316 HAK → HGH May 18, 04:05 UTCMay 18, 04:15 UTC10m
2026-05-17 CXA8315 HGH → HAK May 17, 12:25 UTCMay 18, 01:15 UTC12h 50m

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

Mode-S 781F7D frequently asked

What is Mode-S code 781F7D?
781F7D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32EL.
Where is Mode-S 781F7D registered?
Mode-S code 781F7D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F7D 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 781F7D, octal 36017575, decimal 7,872,381.
What flights does 781F7D operate?
Mode-S 781F7D has broadcast 20 distinct callsigns, including CXA833, CXA8349, CXA834, CXA8350, CXA887.