Apparatus

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sensors Mode-S transponder

781F36

ICAO 24-bit transponder address · allocated to China

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

Hex
781F36
Octal
36017466
Decimal
7,872,310
Country
CN
Tail
B-32DR
Type
A21N
No current signal · last broadcast Jul 26, 08:15 UTC
Flights observed
95
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 08:15 UTC

Last known position

Most recent position reported by Mode-S 781F36.

Country allocation

The ICAO 24-bit address 781F36 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
CXA863 - 6 2026-07-18
CXA8349 - 6 2026-07-10
CXA854 Xiamen Airlines 5 2026-07-26
CXA8321 - 5 2026-06-26
CXA864 - 4 2026-07-18
CXA853 Xiamen Airlines 4 2026-07-26
CXA8395 - 4 2026-07-11
CXA8350 - 4 2026-07-10
CXA887 Xiamen Airlines 3 2026-07-25
CXA8812 - 3 2026-07-12
CXA8536 - 3 2026-05-30
CXA8535 - 3 2026-07-04
CXA844 - 3 2026-07-25
CXA843 - 3 2026-07-25
CXA8387 - 3 2026-06-28
CXA8322 Xiamen Airlines 3 2026-07-21
CXA8070 Xiamen Airlines 3 2026-07-19
CXA888 Xiamen Airlines 2 2026-07-25
CXA8393 Xiamen Airlines 2 2026-06-12
CXA8388 - 2 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CXA854 BKK → XMN Jul 26, 08:00 UTCJul 26, 08:15 UTC15m
2026-07-26 CXA854 BKK → XMN Jul 26, 05:30 UTCJul 26, 07:00 UTC1h 31m
2026-07-26 CXA853 XMN → BKK Jul 26, 01:10 UTCJul 26, 04:00 UTC2h 50m
2026-07-25 CXA844 - Jul 25, 19:15 UTCJul 25, 21:30 UTC2h 15m
2026-07-25 CXA843 - Jul 25, 15:00 UTCJul 25, 17:40 UTC2h 40m
2026-07-25 - - Jul 25, 06:15 UTCJul 25, 06:25 UTC10m
2026-07-25 CXA888 TPE → XMN Jul 25, 03:40 UTCJul 25, 04:25 UTC45m
2026-07-25 CXA887 XMN → TPE Jul 25, 00:50 UTCJul 25, 01:50 UTC1h 0m
2026-07-24 CXA8546 - Jul 24, 16:15 UTCJul 24, 16:25 UTC10m
2026-07-24 CXA8545 - Jul 24, 12:05 UTCJul 24, 12:20 UTC15m
2026-07-22 CXA844 - Jul 22, 19:30 UTCJul 22, 21:45 UTC2h 15m
2026-07-22 CXA843 - Jul 22, 15:05 UTCJul 22, 17:25 UTC2h 20m
2026-07-21 CXA8322 SYX → HGH Jul 21, 00:25 UTCJul 21, 05:15 UTC4h 50m
2026-07-19 CXA8070 CGQ → HGH Jul 19, 13:45 UTCJul 19, 14:25 UTC40m
2026-07-18 CXA864 - Jul 18, 14:45 UTCJul 18, 15:30 UTC45m
2026-07-18 CXA864 - Jul 18, 13:10 UTCJul 18, 13:20 UTC10m
2026-07-18 CXA863 - Jul 18, 10:55 UTCJul 18, 11:15 UTC20m
2026-07-18 CXA863 - Jul 18, 08:55 UTCJul 18, 09:15 UTC20m
2026-07-16 CXA8070 - Jul 16, 12:55 UTCJul 17, 06:35 UTC17h 40m
2026-07-16 CXA8070 - Jul 16, 10:25 UTCJul 17, 06:35 UTC20h 10m
2026-07-15 CXA854 - Jul 15, 07:15 UTCJul 15, 08:00 UTC45m
2026-07-15 CXA854 - Jul 15, 05:40 UTCJul 15, 05:55 UTC15m
2026-07-15 CXA853 - Jul 15, 03:45 UTCJul 15, 03:55 UTC10m
2026-07-15 CXA853 - Jul 15, 01:20 UTCJul 15, 02:30 UTC1h 10m
2026-07-14 CXA864 - Jul 14, 13:10 UTCJul 14, 15:25 UTC2h 15m
2026-07-14 CXA863 - Jul 14, 11:30 UTCJul 14, 11:50 UTC20m
2026-07-14 CXA863 - Jul 14, 09:30 UTCJul 14, 09:40 UTC10m
2026-07-13 CXA864 - Jul 13, 13:10 UTCJul 13, 15:35 UTC2h 25m
2026-07-13 CXA863 - Jul 13, 11:40 UTCJul 13, 12:00 UTC20m
2026-07-13 CXA863 - Jul 13, 09:35 UTCJul 13, 10:15 UTC40m
2026-07-12 CXA8812 - Jul 12, 04:01 UTCJul 12, 08:01 UTC4h 0m
2026-07-11 CXA8812 - Jul 11, 13:00 UTCJul 12, 08:01 UTC19h 0m
2026-07-11 CXA8812 - Jul 11, 09:25 UTCJul 12, 07:31 UTC22h 5m
2026-07-11 CXA8395 - Jul 11, 02:20 UTCJul 11, 02:40 UTC20m
2026-07-10 CXA8350 - Jul 10, 13:05 UTCJul 10, 13:15 UTC10m
2026-07-10 CXA8349 - Jul 10, 11:05 UTCJul 10, 11:30 UTC25m
2026-07-10 CXA8349 - Jul 10, 08:55 UTCJul 10, 09:05 UTC10m
2026-07-04 CXA8361 - Jul 4, 14:15 UTCJul 4, 17:20 UTC3h 5m
2026-07-04 CXA8535 - Jul 4, 02:25 UTCJul 4, 02:40 UTC15m
2026-07-03 CXA8128 - Jul 3, 09:10 UTCJul 3, 09:20 UTC10m
2026-07-02 CXA8816 - Jul 2, 09:25 UTCJul 2, 13:10 UTC3h 45m
2026-07-02 CXA8395 PKX → CAN Jul 2, 02:45 UTCJul 2, 03:00 UTC15m
2026-07-01 CXA8340 - Jul 1, 15:00 UTCJul 1, 15:10 UTC10m
2026-06-29 CXA8535 - Jun 29, 01:44 UTCJun 29, 01:55 UTC10m
2026-06-28 CXA8388 - Jun 28, 07:05 UTCJun 28, 07:20 UTC15m
2026-06-28 CXA8387 - Jun 28, 05:09 UTCJun 28, 05:24 UTC15m
2026-06-26 CXA8321 - Jun 26, 00:35 UTCJun 26, 13:19 UTC12h 45m
2026-06-25 CXA8395 PKX → CAN Jun 25, 02:35 UTCJun 25, 02:49 UTC15m
2026-06-24 CXA8319 - Jun 24, 01:39 UTCJun 24, 02:09 UTC30m
2026-06-23 CXA8322 - Jun 23, 04:05 UTCJun 24, 02:09 UTC22h 5m

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

Mode-S 781F36 frequently asked

What is Mode-S code 781F36?
781F36 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32DR.
Where is Mode-S 781F36 registered?
Mode-S code 781F36 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F36 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781F36, octal 36017466, decimal 7,872,310.
What flights does 781F36 operate?
Mode-S 781F36 has broadcast 20 distinct callsigns, including CXA863, CXA8349, CXA854, CXA8321, CXA864.