Apparatus

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sensors Mode-S transponder

781E93

ICAO 24-bit transponder address · allocated to China

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

Hex
781E93
Octal
36017223
Decimal
7,872,147
Country
CN
Tail
B-32CU
Type
A21N
No current signal · last broadcast 1d ago
Flights observed
33
Distinct callsigns
16
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781E93.

Country allocation

The ICAO 24-bit address 781E93 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 16 distinct

Callsign Airline Flights Last seen
CXA8321 Xiamen Airlines 7 2026-05-09
CXA8536 - 3 2026-05-03
CXA8335 Xiamen Airlines 3 2026-06-01
CXA854 Xiamen Airlines 2 2026-05-02
CXA853 Xiamen Airlines 2 2026-05-02
CXA8359 Xiamen Airlines 2 2026-04-19
CXA8350 Xiamen Airlines 2 2026-05-27
CXA8349 Xiamen Airlines 2 2026-05-27
CXA8322 Xiamen Airlines 2 2026-05-07
CXA8571 Xiamen Airlines 1 2026-05-17
CXA8398 - 1 2026-04-15
CXA8397 - 1 2026-04-15
CXA8388 Xiamen Airlines 1 2026-05-12
CXA8387 Xiamen Airlines 1 2026-05-12
CXA8382 Xiamen Airlines 1 2026-05-23
CXA8360 Xiamen Airlines 1 2026-05-05

Recent flights last 33

DateFlightRouteTakeoffLandingDuration
2026-06-01 CXA8335 PKX → SZX Jun 1, 02:00 UTCJun 1, 02:10 UTC10m
2026-05-27 CXA8350 SZX → PKX May 27, 12:50 UTCMay 27, 13:05 UTC15m
2026-05-27 CXA8349 PKX → SZX May 27, 10:30 UTCMay 27, 10:55 UTC25m
2026-05-23 CXA8382 CAN → HGH May 23, 08:15 UTCMay 23, 08:55 UTC40m
2026-05-19 - - May 19, 02:40 UTCMay 19, 02:50 UTC10m
2026-05-18 CXA8350 SZX → PKX May 18, 14:55 UTCMay 18, 15:10 UTC15m
2026-05-17 CXA8571 XMN → TNA May 17, 01:25 UTCMay 17, 01:35 UTC10m
2026-05-12 CXA8388 SZX → HGH May 12, 06:45 UTCMay 12, 06:55 UTC10m
2026-05-12 CXA8387 HGH → SZX May 12, 04:20 UTCMay 12, 05:20 UTC1h 0m
2026-05-09 CXA8321 HGH → SYX May 9, 00:35 UTCMay 9, 04:25 UTC3h 50m
2026-05-08 CXA8321 HGH → SYX May 8, 04:19 UTCMay 9, 00:55 UTC20h 35m
2026-05-08 CXA8321 HGH → SYX May 8, 00:49 UTCMay 9, 00:45 UTC23h 55m
2026-05-08 CXA8321 HGH → SYX May 8, 00:44 UTCMay 8, 04:19 UTC3h 35m
2026-05-07 CXA8322 SYX → HGH May 7, 04:15 UTCMay 8, 00:49 UTC20h 35m
2026-05-07 CXA8321 HGH → SYX May 7, 00:30 UTCMay 7, 04:30 UTC4h 0m
2026-05-05 CXA8360 NNG → XMN May 5, 14:10 UTCMay 5, 14:20 UTC10m
2026-05-04 CXA8349 PKX → SZX May 4, 10:55 UTCMay 4, 11:20 UTC25m
2026-05-03 CXA8536 - May 3, 07:00 UTCMay 3, 07:30 UTC30m
2026-05-02 CXA854 BKK → XMN May 2, 05:40 UTCMay 2, 07:45 UTC2h 5m
2026-05-02 CXA853 XMN → BKK May 2, 01:45 UTCMay 2, 04:15 UTC2h 30m
2026-04-28 CXA854 BKK → XMN Apr 28, 06:35 UTCApr 28, 08:50 UTC2h 15m
2026-04-28 CXA853 XMN → BKK Apr 28, 02:05 UTCApr 28, 05:10 UTC3h 5m
2026-04-24 CXA8321 HGH → SYX Apr 24, 00:40 UTCApr 24, 04:30 UTC3h 50m
2026-04-23 CXA8536 - Apr 23, 08:01 UTCApr 23, 08:15 UTC15m
2026-04-23 CXA8536 - Apr 23, 06:55 UTCApr 23, 07:30 UTC35m
2026-04-19 CXA8359 XMN → NNG Apr 19, 10:15 UTCApr 19, 10:45 UTC30m
2026-04-18 CXA8359 XMN → NNG Apr 18, 14:05 UTCApr 19, 10:45 UTC20h 40m
2026-04-18 CXA8335 PKX → SZX Apr 18, 04:55 UTCApr 18, 05:20 UTC25m
2026-04-18 CXA8335 PKX → SZX Apr 18, 04:05 UTCApr 18, 05:20 UTC1h 15m
2026-04-17 CXA8322 SYX → HGH Apr 17, 04:55 UTCApr 17, 05:15 UTC20m
2026-04-17 CXA8321 HGH → SYX Apr 17, 00:50 UTCApr 17, 01:00 UTC10m
2026-04-15 CXA8398 - Apr 15, 04:30 UTCApr 15, 04:50 UTC20m
2026-04-15 CXA8397 - Apr 15, 00:55 UTCApr 15, 01:15 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-32CU page for operator, model, and routing details .

Mode-S 781E93 frequently asked

What is Mode-S code 781E93?
781E93 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CU.
Where is Mode-S 781E93 registered?
Mode-S code 781E93 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E93 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 781E93, octal 36017223, decimal 7,872,147.
What flights does 781E93 operate?
Mode-S 781E93 has broadcast 16 distinct callsigns, including CXA8321, CXA8536, CXA8335, CXA854, CXA853.