sensors Mode-S transponder

781EAD

ICAO 24-bit transponder address · allocated to China

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

Hex
781EAD
Octal
36017255
Decimal
7,872,173
Country
CN
Tail
B-32CY
Type
A21N
No current signal · last broadcast 8d ago
Flights observed
48
Distinct callsigns
20
Country
CN
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 781EAD.

Country allocation

The ICAO 24-bit address 781EAD 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
CXA887 Xiamen Airlines 6 2026-05-22
CXA834 Xiamen Airlines 6 2026-05-11
CXA833 Xiamen Airlines 5 2026-05-11
CXA8321 Xiamen Airlines 4 2026-05-18
CXA8536 - 3 2026-05-23
CXA8397 - 3 2026-05-10
CXA888 Xiamen Airlines 2 2026-05-22
CXA8398 - 2 2026-05-03
CXA8375 Xiamen Airlines 2 2026-04-21
CXA8350 Xiamen Airlines 2 2026-05-15
CXA8816 Xiamen Airlines 1 2026-05-18
CXA864 Xiamen Airlines 1 2026-04-28
CXA863 Xiamen Airlines 1 2026-04-28
CXA854 Xiamen Airlines 1 2026-04-21
CXA853 Xiamen Airlines 1 2026-04-21
CXA8524 Xiamen Airlines 1 2026-05-25
CXA8387 Xiamen Airlines 1 2026-04-16
CXA8361 Xiamen Airlines 1 2026-05-02
CXA8360 Xiamen Airlines 1 2026-04-20
CXA8349 Xiamen Airlines 1 2026-05-14

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-05-25 CXA8524 TAO → FOC May 25, 11:10 UTCMay 25, 11:45 UTC35m
2026-05-23 CXA8536 - May 23, 02:05 UTCMay 23, 07:20 UTC5h 15m
2026-05-22 CXA8536 - May 22, 07:20 UTCMay 23, 07:15 UTC23h 54m
2026-05-22 CXA888 TPE → XMN May 22, 03:45 UTCMay 23, 02:05 UTC22h 20m
2026-05-22 CXA887 XMN → TPE May 22, 01:20 UTCMay 22, 01:50 UTC30m
2026-05-18 CXA8816 SYX → XMN May 18, 13:00 UTCMay 19, 09:15 UTC20h 14m
2026-05-18 CXA8321 HGH → SYX May 18, 00:30 UTCMay 18, 13:05 UTC12h 35m
2026-05-15 CXA8350 SZX → PKX May 15, 16:10 UTCMay 15, 16:25 UTC15m
2026-05-15 - - May 15, 13:50 UTCMay 15, 14:10 UTC20m
2026-05-14 CXA8350 SZX → PKX May 14, 15:20 UTCMay 14, 15:30 UTC10m
2026-05-14 CXA8349 PKX → SZX May 14, 13:01 UTCMay 14, 13:25 UTC25m
2026-05-12 CXA8536 - May 12, 06:45 UTCMay 12, 07:25 UTC40m
2026-05-11 CXA834 BKK → XMN May 11, 11:20 UTCMay 12, 07:25 UTC20h 5m
2026-05-11 CXA834 BKK → XMN May 11, 10:55 UTCMay 12, 07:25 UTC20h 31m
2026-05-11 CXA833 XMN → BKK May 11, 03:20 UTCMay 11, 09:10 UTC5h 50m
2026-05-11 CXA887 XMN → TPE May 11, 01:15 UTCMay 11, 01:40 UTC25m
2026-05-10 CXA8397 - May 10, 00:34 UTCMay 10, 04:29 UTC3h 55m
2026-05-08 CXA8307 XMN → SYX May 8, 03:35 UTCMay 8, 13:20 UTC9h 45m
2026-05-08 CXA887 XMN → TPE May 8, 01:14 UTCMay 8, 01:45 UTC30m
2026-05-07 CXA834 BKK → XMN May 7, 11:00 UTCMay 7, 13:20 UTC2h 20m
2026-05-07 CXA833 XMN → BKK May 7, 03:25 UTCMay 7, 09:35 UTC6h 10m
2026-05-07 CXA887 XMN → TPE May 7, 01:10 UTCMay 7, 01:50 UTC40m
2026-05-05 CXA8321 HGH → SYX May 5, 00:35 UTCMay 5, 04:25 UTC3h 50m
2026-05-04 CXA8321 HGH → SYX May 4, 04:00 UTCMay 5, 00:55 UTC20h 56m
2026-05-04 CXA8321 HGH → SYX May 4, 00:34 UTCMay 4, 04:05 UTC3h 30m
2026-05-03 CXA8398 - May 3, 04:20 UTCMay 4, 00:50 UTC20h 30m
2026-05-02 CXA8397 - May 2, 13:45 UTCMay 3, 04:40 UTC14h 54m
2026-05-02 CXA8361 XMN → HAK May 2, 10:30 UTCMay 2, 10:55 UTC25m
2026-04-30 CXA834 BKK → XMN Apr 30, 11:15 UTCApr 30, 13:25 UTC2h 10m
2026-04-30 CXA833 XMN → BKK Apr 30, 03:30 UTCApr 30, 09:45 UTC6h 15m
2026-04-29 CXA834 BKK → XMN Apr 29, 11:10 UTCApr 30, 01:35 UTC14h 24m
2026-04-29 CXA833 XMN → BKK Apr 29, 09:00 UTCApr 29, 09:35 UTC35m
2026-04-29 CXA888 TPE → XMN Apr 29, 03:45 UTCApr 29, 04:20 UTC35m
2026-04-28 CXA864 SIN → HGH Apr 28, 13:50 UTCApr 29, 02:05 UTC12h 15m
2026-04-28 CXA863 HGH → SIN Apr 28, 09:55 UTCApr 28, 12:30 UTC2h 35m
2026-04-23 CXA834 BKK → XMN Apr 23, 11:05 UTCApr 23, 13:20 UTC2h 15m
2026-04-23 CXA833 XMN → BKK Apr 23, 03:40 UTCApr 23, 09:50 UTC6h 10m
2026-04-23 CXA887 XMN → TPE Apr 23, 01:20 UTCApr 23, 01:45 UTC25m
2026-04-22 CXA887 XMN → TPE Apr 22, 03:20 UTCApr 23, 01:45 UTC22h 25m
2026-04-21 CXA8375 XMN → NNG Apr 21, 10:35 UTCApr 22, 03:20 UTC16h 45m
2026-04-21 CXA8375 XMN → NNG Apr 21, 07:45 UTCApr 22, 03:20 UTC19h 35m
2026-04-21 CXA854 BKK → XMN Apr 21, 05:45 UTCApr 22, 03:15 UTC21h 30m
2026-04-21 CXA853 XMN → BKK Apr 21, 01:45 UTCApr 21, 04:10 UTC2h 25m
2026-04-20 CXA8360 NNG → XMN Apr 20, 14:15 UTCApr 20, 14:25 UTC10m
2026-04-16 - - Apr 16, 15:00 UTCApr 16, 15:10 UTC10m
2026-04-16 CXA8387 HGH → SZX Apr 16, 06:05 UTCApr 16, 06:29 UTC25m
2026-04-13 CXA8398 - Apr 13, 05:10 UTCApr 13, 05:30 UTC20m
2026-04-13 CXA8397 - Apr 13, 01:30 UTCApr 13, 01:55 UTC25m

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

Mode-S 781EAD frequently asked

What is Mode-S code 781EAD?
781EAD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CY.
Where is Mode-S 781EAD registered?
Mode-S code 781EAD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781EAD broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781EAD, octal 36017255, decimal 7,872,173.
What flights does 781EAD operate?
Mode-S 781EAD has broadcast 20 distinct callsigns, including CXA887, CXA834, CXA833, CXA8321, CXA8536.