Apparatus

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sensors Mode-S transponder

781F1A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32DE · AIRBUS A-320neo

Hex
781F1A
Octal
36017432
Decimal
7,872,282
Country
CN
Tail
B-32DE
Type
A20N
No current signal · last broadcast 18h ago
Flights observed
43
Distinct callsigns
20
Country
CN
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 781F1A.

Country allocation

The ICAO 24-bit address 781F1A 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
CES6270 China Eastern Airlines 5 2026-05-28
CES5022 China Eastern Airlines 5 2026-05-14
CES5021 China Eastern Airlines 5 2026-05-14
CES6109 China Eastern Airlines 3 2026-05-28
CES873 China Eastern Airlines 2 2026-05-04
CES6235 China Eastern Airlines 2 2026-05-29
CES6229 China Eastern Airlines 2 2026-04-30
CES6110 China Eastern Airlines 2 2026-05-29
CES6108 China Eastern Airlines 2 2026-05-21
CES6107 China Eastern Airlines 2 2026-05-21
CES874 China Eastern Airlines 1 2026-05-04
CES796 China Eastern Airlines 1 2026-04-27
CES795 China Eastern Airlines 1 2026-04-27
CES6297 - 1 2026-05-01
CES6269 China Eastern Airlines 1 2026-05-27
CES6230 - 1 2026-04-30
CES5032 China Eastern Airlines 1 2026-04-24
CES5031 China Eastern Airlines 1 2026-04-24
CES2411 China Eastern Airlines 1 2026-04-30
CES2183 China Eastern Airlines 1 2026-04-18

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-05-29 CES6235 PKX → HRB May 29, 14:35 UTCMay 29, 14:45 UTC10m
2026-05-29 CES6110 JHG → TAO May 29, 05:15 UTCMay 29, 05:30 UTC15m
2026-05-28 CES6109 TAO → JHG May 28, 13:30 UTCMay 28, 13:55 UTC25m
2026-05-28 CES6270 PKX → XMN May 28, 11:25 UTCMay 28, 11:40 UTC15m
2026-05-27 CES6270 PKX → XMN May 27, 12:50 UTCMay 27, 13:00 UTC10m
2026-05-27 CES6269 XMN → PKX May 27, 03:39 UTCMay 27, 03:54 UTC15m
2026-05-26 CES6235 PKX → HRB May 26, 14:35 UTCMay 26, 14:45 UTC10m
2026-05-26 CES6270 PKX → XMN May 26, 11:00 UTCMay 26, 11:15 UTC15m
2026-05-25 CES6270 PKX → XMN May 25, 10:55 UTCMay 25, 11:10 UTC15m
2026-05-21 CES6109 TAO → JHG May 21, 13:15 UTCMay 21, 13:35 UTC20m
2026-05-21 CES6108 URC → PKX May 21, 09:20 UTCMay 21, 09:35 UTC15m
2026-05-21 CES6107 NGB → TAO May 21, 01:20 UTCMay 21, 01:35 UTC15m
2026-05-20 CES2130 LHW → PKX May 20, 04:05 UTCMay 20, 04:15 UTC10m
2026-05-14 CES5022 ICN → TAO May 14, 05:20 UTCMay 14, 05:35 UTC15m
2026-05-14 CES5021 TAO → ICN May 14, 03:50 UTCMay 14, 04:10 UTC20m
2026-05-08 CES5022 ICN → TAO May 8, 05:35 UTCMay 8, 05:59 UTC25m
2026-05-08 CES5021 TAO → ICN May 8, 04:04 UTCMay 8, 04:19 UTC15m
2026-05-05 CES5022 ICN → TAO May 5, 05:40 UTCMay 5, 05:55 UTC15m
2026-05-04 CES874 KUL → KMG May 4, 12:35 UTCMay 4, 12:55 UTC20m
2026-05-04 CES873 KMG → KUL May 4, 10:30 UTCMay 4, 11:00 UTC30m
2026-05-04 CES873 KMG → KUL May 4, 06:00 UTCMay 4, 07:10 UTC1h 10m
2026-05-01 CES6297 - May 1, 01:55 UTCMay 1, 02:10 UTC15m
2026-04-30 CES6230 - Apr 30, 13:05 UTCApr 30, 13:20 UTC15m
2026-04-30 CES6229 TAO → JMU Apr 30, 03:40 UTCApr 30, 04:00 UTC20m
2026-04-30 CES2411 LHW → PKX Apr 30, 01:15 UTCApr 30, 01:30 UTC15m
2026-04-29 CES6110 JHG → TAO Apr 29, 05:25 UTCApr 29, 05:40 UTC15m
2026-04-28 CES6109 TAO → JHG Apr 28, 13:20 UTCApr 28, 13:40 UTC20m
2026-04-28 CES6270 PKX → XMN Apr 28, 11:20 UTCApr 28, 11:30 UTC10m
2026-04-27 CES796 KUL → PKX Apr 27, 18:20 UTCApr 27, 18:40 UTC20m
2026-04-27 CES795 PKX → KUL Apr 27, 13:15 UTCApr 27, 16:50 UTC3h 35m
2026-04-26 CES6108 URC → PKX Apr 26, 09:25 UTCApr 26, 09:40 UTC15m
2026-04-26 CES6107 NGB → TAO Apr 26, 01:30 UTCApr 26, 01:40 UTC10m
2026-04-25 CES6229 TAO → JMU Apr 25, 03:50 UTCApr 25, 13:25 UTC9h 35m
2026-04-24 CES5032 HKG → HFE Apr 24, 17:30 UTCApr 24, 17:45 UTC15m
2026-04-24 CES5031 HFE → HKG Apr 24, 12:05 UTCApr 24, 15:45 UTC3h 40m
2026-04-20 CES2070 SIN → XIY Apr 20, 06:15 UTCApr 20, 06:35 UTC20m
2026-04-20 CES2069 XIY → SIN Apr 20, 02:55 UTCApr 20, 04:35 UTC1h 40m
2026-04-18 CES2183 XIY → SHE Apr 18, 23:45 UTCApr 19, 00:10 UTC25m
2026-04-16 CES5022 ICN → TAO Apr 16, 05:29 UTCApr 16, 05:45 UTC15m
2026-04-16 CES5021 TAO → ICN Apr 16, 03:39 UTCApr 16, 04:10 UTC30m
2026-04-13 CES5022 - Apr 13, 05:35 UTCApr 13, 05:45 UTC10m
2026-04-13 CES5021 TAO → ICN Apr 13, 03:55 UTCApr 13, 04:05 UTC10m
2026-04-13 CES5021 TAO → ICN Apr 13, 03:35 UTCApr 13, 04:05 UTC30m

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

Mode-S 781F1A frequently asked

What is Mode-S code 781F1A?
781F1A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32DE.
Where is Mode-S 781F1A registered?
Mode-S code 781F1A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F1A broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781F1A, octal 36017432, decimal 7,872,282.
What flights does 781F1A operate?
Mode-S 781F1A has broadcast 20 distinct callsigns, including CES6270, CES5022, CES5021, CES6109, CES873.