Apparatus

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sensors Mode-S transponder

781E3F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32C5 · AIRBUS A-320neo

Hex
781E3F
Octal
36017077
Decimal
7,872,063
Country
CN
Tail
B-32C5
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
42
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781E3F.

Country allocation

The ICAO 24-bit address 781E3F 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 3 2026-05-07
CES6235 China Eastern Airlines 3 2026-05-21
CES6229 China Eastern Airlines 3 2026-05-19
CES6109 China Eastern Airlines 3 2026-05-07
CES5031 China Eastern Airlines 3 2026-05-04
CES6269 China Eastern Airlines 2 2026-05-22
CES6236 China Eastern Airlines 2 2026-04-23
CES6230 - 2 2026-05-02
CES6110 China Eastern Airlines 2 2026-05-08
CES6108 China Eastern Airlines 2 2026-05-05
CES5032 China Eastern Airlines 2 2026-05-04
CES9852 China Eastern Airlines 1 2026-05-17
CES795 China Eastern Airlines 1 2026-04-28
CES6960 China Eastern Airlines 1 2026-05-03
CES6670 China Eastern Airlines 1 2026-04-26
CES6160 China Eastern Airlines 1 2026-05-01
CES6139 China Eastern Airlines 1 2026-05-24
CES6107 China Eastern Airlines 1 2026-05-05
CES2427 China Eastern Airlines 1 2026-05-09
CES2418 China Eastern Airlines 1 2026-05-18

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-06-02 CES2236 KHN → XIY Jun 2, 12:05 UTCJun 2, 12:20 UTC15m
2026-05-24 CES6139 PKX → KHN May 24, 07:00 UTCMay 24, 07:15 UTC15m
2026-05-22 CES6269 XMN → PKX May 22, 03:50 UTCMay 22, 04:05 UTC15m
2026-05-21 CES6235 PKX → HRB May 21, 14:35 UTCMay 21, 14:45 UTC10m
2026-05-19 CES6229 TAO → JMU May 19, 03:40 UTCMay 19, 13:25 UTC9h 45m
2026-05-19 CES2411 LHW → PKX May 19, 01:05 UTCMay 19, 01:20 UTC15m
2026-05-18 CES2418 PKX → LHW May 18, 15:00 UTCMay 18, 15:10 UTC10m
2026-05-17 CES9852 URC → PKX May 17, 14:45 UTCMay 17, 15:01 UTC15m
2026-05-09 CES2427 XNN → PKX May 9, 01:30 UTCMay 9, 01:40 UTC10m
2026-05-08 CES6110 JHG → TAO May 8, 05:20 UTCMay 8, 05:35 UTC15m
2026-05-07 CES6109 TAO → JHG May 7, 13:20 UTCMay 7, 13:45 UTC25m
2026-05-07 CES6270 PKX → XMN May 7, 11:25 UTCMay 7, 11:35 UTC10m
2026-05-06 CES6110 JHG → TAO May 6, 05:15 UTCMay 6, 05:30 UTC15m
2026-05-05 CES6109 TAO → JHG May 5, 13:10 UTCMay 5, 13:35 UTC25m
2026-05-05 CES6108 URC → PKX May 5, 09:20 UTCMay 5, 09:35 UTC15m
2026-05-05 CES6107 NGB → TAO May 5, 01:25 UTCMay 5, 01:45 UTC20m
2026-05-04 CES5032 HKG → HFE May 4, 17:20 UTCMay 4, 17:35 UTC15m
2026-05-04 CES5031 HFE → HKG May 4, 11:50 UTCMay 4, 15:05 UTC3h 15m
2026-05-03 CES6960 HAK → PKX May 3, 08:40 UTCMay 3, 08:55 UTC15m
2026-05-02 CES6230 - May 2, 13:20 UTCMay 2, 13:35 UTC15m
2026-05-02 CES6229 TAO → JMU May 2, 03:35 UTCMay 2, 04:00 UTC25m
2026-05-01 CES6160 SZX → XIY May 1, 23:50 UTCMay 2, 00:05 UTC15m
2026-05-01 CES2016 MFM → PKX May 1, 10:00 UTCMay 1, 10:15 UTC15m
2026-05-01 CES2015 PKX → MFM May 1, 08:05 UTCMay 1, 08:30 UTC25m
2026-04-29 CES5032 HKG → HFE Apr 29, 18:25 UTCApr 29, 18:50 UTC25m
2026-04-29 CES5031 HFE → HKG Apr 29, 13:20 UTCApr 29, 17:01 UTC3h 40m
2026-04-28 CES5031 HFE → HKG Apr 28, 19:30 UTCApr 29, 17:01 UTC21h 31m
2026-04-28 CES795 PKX → KUL Apr 28, 14:30 UTCApr 28, 18:05 UTC3h 35m
2026-04-26 CES6670 SZX → PKX Apr 26, 13:50 UTCApr 26, 14:05 UTC15m
2026-04-25 CES2072 BKK → PKX Apr 25, 19:35 UTCApr 25, 21:45 UTC2h 10m
2026-04-25 CES2071 PKX → BKK Apr 25, 17:05 UTCApr 25, 17:35 UTC30m
2026-04-25 CES6108 URC → PKX Apr 25, 09:35 UTCApr 25, 09:50 UTC15m
2026-04-23 CES6230 - Apr 23, 13:15 UTCApr 23, 13:30 UTC15m
2026-04-23 CES6229 TAO → JMU Apr 23, 03:35 UTCApr 23, 03:55 UTC20m
2026-04-23 CES6236 HRB → PKX Apr 23, 00:20 UTCApr 23, 00:30 UTC10m
2026-04-22 CES6235 PKX → HRB Apr 22, 14:30 UTCApr 22, 14:40 UTC10m
2026-04-21 CES6109 TAO → JHG Apr 21, 14:05 UTCApr 22, 05:35 UTC15h 30m
2026-04-21 CES6270 PKX → XMN Apr 21, 12:05 UTCApr 21, 12:20 UTC15m
2026-04-20 CES6235 PKX → HRB Apr 20, 14:30 UTCApr 20, 14:45 UTC15m
2026-04-19 CES6270 PKX → XMN Apr 19, 11:05 UTCApr 19, 11:15 UTC10m
2026-04-19 CES6269 XMN → PKX Apr 19, 02:25 UTCApr 19, 02:50 UTC25m
2026-04-18 CES6236 HRB → PKX Apr 18, 23:55 UTCApr 19, 00:05 UTC10m

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-32C5 page for operator, model, and routing details .

Mode-S 781E3F frequently asked

What is Mode-S code 781E3F?
781E3F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32C5.
Where is Mode-S 781E3F registered?
Mode-S code 781E3F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E3F 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 781E3F, octal 36017077, decimal 7,872,063.
What flights does 781E3F operate?
Mode-S 781E3F has broadcast 20 distinct callsigns, including CES6270, CES6235, CES6229, CES6109, CES5031.