Apparatus

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sensors Mode-S transponder

781E3D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32C2 · AIRBUS A-320neo

Hex
781E3D
Octal
36017075
Decimal
7,872,061
Country
CN
Tail
B-32C2
Type
A20N
No current signal · last broadcast Jul 25, 13:25 UTC
Flights observed
70
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 13:25 UTC

Last known position

Most recent position reported by Mode-S 781E3D.

Country allocation

The ICAO 24-bit address 781E3D 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
CES795 - 7 2026-07-17
CES796 - 6 2026-07-17
CES6108 China Eastern Airlines 6 2026-07-19
CES873 China Eastern Airlines 5 2026-07-22
CES6107 China Eastern Airlines 4 2026-07-19
CES5031 - 4 2026-07-18
CES5015 - 4 2026-07-17
CES874 - 3 2026-06-16
CES6262 - 3 2026-07-01
CES5032 - 3 2026-07-18
CES5022 China Eastern Airlines 3 2026-07-23
CES5021 China Eastern Airlines 3 2026-07-23
CES6270 - 2 2026-07-12
CES5016 - 2 2026-07-10
CES2130 China Eastern Airlines 2 2026-06-13
CES853 China Eastern Airlines 1 2026-07-21
CES6782 - 1 2026-07-25
CES6328 China Eastern Airlines 1 2026-04-16
CES6327 China Eastern Airlines 1 2026-04-16
CES5246 China Eastern Airlines 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CES6782 - Jul 25, 13:15 UTCJul 25, 13:25 UTC10m
2026-07-23 CES5022 ICN → TAO Jul 23, 08:00 UTCJul 23, 08:30 UTC30m
2026-07-23 CES5021 TAO → ICN Jul 23, 06:05 UTCJul 23, 06:40 UTC35m
2026-07-22 CES873 KMG → KUL Jul 22, 03:25 UTCJul 22, 11:30 UTC8h 5m
2026-07-21 CES873 KMG → KUL Jul 21, 11:20 UTCJul 22, 11:15 UTC23h 55m
2026-07-21 CES873 KMG → KUL Jul 21, 11:05 UTCJul 22, 04:05 UTC17h 0m
2026-07-21 CES853 PKX → HKG Jul 21, 09:25 UTCJul 21, 09:50 UTC25m
2026-07-19 CES6108 URC → PKX Jul 19, 09:45 UTCJul 19, 10:00 UTC15m
2026-07-19 CES6107 NGB → TAO Jul 19, 01:20 UTCJul 19, 01:40 UTC20m
2026-07-18 CES5032 - Jul 18, 17:25 UTCJul 18, 20:15 UTC2h 50m
2026-07-18 CES5031 - Jul 18, 11:40 UTCJul 18, 15:00 UTC3h 20m
2026-07-17 CES796 - Jul 17, 17:40 UTCJul 17, 20:29 UTC2h 50m
2026-07-17 CES795 - Jul 17, 05:45 UTCJul 17, 16:15 UTC10h 30m
2026-07-17 CES5015 - Jul 17, 03:25 UTCJul 17, 04:14 UTC50m
2026-07-12 CES6270 - Jul 12, 11:20 UTCJul 12, 11:35 UTC15m
2026-07-11 CES6108 - Jul 11, 10:00 UTCJul 11, 10:15 UTC15m
2026-07-11 CES6107 - Jul 11, 01:25 UTCJul 11, 01:40 UTC15m
2026-07-10 CES796 - Jul 10, 18:20 UTCJul 10, 21:10 UTC2h 51m
2026-07-10 CES795 - Jul 10, 11:20 UTCJul 10, 16:55 UTC5h 35m
2026-07-10 CES5016 - Jul 10, 05:55 UTCJul 10, 06:10 UTC15m
2026-07-10 CES5015 - Jul 10, 03:25 UTCJul 10, 03:55 UTC30m
2026-07-09 CES6108 - Jul 9, 10:00 UTCJul 9, 10:10 UTC10m
2026-07-09 CES6107 - Jul 9, 01:25 UTCJul 9, 01:40 UTC15m
2026-07-08 CES796 - Jul 8, 17:40 UTCJul 8, 20:40 UTC3h 0m
2026-07-08 CES795 - Jul 8, 05:45 UTCJul 8, 16:10 UTC10h 25m
2026-07-08 CES5015 - Jul 8, 03:30 UTCJul 8, 04:00 UTC30m
2026-07-07 CES6108 - Jul 7, 01:15 UTCJul 7, 09:40 UTC8h 25m
2026-07-06 CES796 - Jul 6, 18:05 UTCJul 6, 21:00 UTC2h 55m
2026-07-06 CES795 - Jul 6, 13:10 UTCJul 6, 16:40 UTC3h 30m
2026-07-06 CES5016 - Jul 6, 05:55 UTCJul 6, 06:15 UTC20m
2026-07-06 CES5015 - Jul 6, 03:25 UTCJul 6, 04:15 UTC50m
2026-07-05 CES6108 - Jul 5, 11:25 UTCJul 5, 11:40 UTC15m
2026-07-04 CES796 - Jul 4, 18:55 UTCJul 4, 22:25 UTC3h 30m
2026-07-04 CES795 - Jul 4, 14:15 UTCJul 4, 17:35 UTC3h 20m
2026-07-02 CES796 - Jul 2, 18:25 UTCJul 2, 21:40 UTC3h 15m
2026-07-02 CES795 - Jul 2, 16:45 UTCJul 2, 17:00 UTC15m
2026-07-02 CES795 - Jul 2, 02:55 UTCJul 2, 14:35 UTC11h 40m
2026-07-01 CES6262 - Jul 1, 15:10 UTCJul 1, 15:20 UTC10m
2026-06-30 CES5032 - Jun 30, 18:55 UTCJun 30, 22:05 UTC3h 10m
2026-06-30 CES5031 - Jun 30, 17:15 UTCJun 30, 17:35 UTC20m
2026-06-30 CES5031 - Jun 30, 12:00 UTCJun 30, 14:40 UTC2h 40m
2026-06-29 CES6262 - Jun 29, 15:09 UTCJun 29, 15:34 UTC25m
2026-06-28 CES6108 - Jun 28, 09:25 UTCJun 28, 09:39 UTC15m
2026-06-28 CES6107 - Jun 28, 01:25 UTCJun 28, 01:44 UTC20m
2026-06-22 CES284 - Jun 22, 15:40 UTCJun 22, 19:00 UTC3h 20m
2026-06-19 CES5022 - Jun 19, 05:45 UTCJun 19, 06:10 UTC25m
2026-06-19 CES5021 - Jun 19, 03:34 UTCJun 19, 03:55 UTC20m
2026-06-16 CES874 - Jun 16, 10:20 UTCJun 16, 10:55 UTC35m
2026-06-16 CES874 - Jun 16, 07:55 UTCJun 16, 08:10 UTC15m
2026-06-16 CES873 - Jun 16, 03:20 UTCJun 16, 06:25 UTC3h 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-32C2 page for operator, model, and routing details .

Mode-S 781E3D frequently asked

What is Mode-S code 781E3D?
781E3D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32C2.
Where is Mode-S 781E3D registered?
Mode-S code 781E3D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E3D broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 13:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E3D, octal 36017075, decimal 7,872,061.
What flights does 781E3D operate?
Mode-S 781E3D has broadcast 20 distinct callsigns, including CES795, CES796, CES6108, CES873, CES6107.