Apparatus

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sensors Mode-S transponder

781E3E

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32C3 · AIRBUS A-320neo

Hex
781E3E
Octal
36017076
Decimal
7,872,062
Country
CN
Tail
B-32C3
Type
A20N
No current signal · last broadcast Jul 25, 18:55 UTC
Flights observed
95
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 18:55 UTC

Last known position

Most recent position reported by Mode-S 781E3E.

Country allocation

The ICAO 24-bit address 781E3E 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 - 4 2026-07-05
CES6109 - 4 2026-07-05
CES5652 China Eastern Airlines 4 2026-07-22
CES2071 - 4 2026-07-04
CES874 China Eastern Airlines 3 2026-05-31
CES6664 China Eastern Airlines 3 2026-07-25
CES6235 China Eastern Airlines 3 2026-06-11
CES6108 - 3 2026-07-03
CES5032 - 3 2026-07-07
CES5031 - 3 2026-07-07
CES5016 - 3 2026-06-28
CES873 China Eastern Airlines 2 2026-05-30
CES861 - 2 2026-07-10
CES796 China Eastern Airlines 2 2026-05-20
CES795 China Eastern Airlines 2 2026-05-20
CES759 China Eastern Airlines 2 2026-06-17
CES6959 China Eastern Airlines 2 2026-06-23
CES6262 - 2 2026-07-08
CES6110 China Eastern Airlines 2 2026-06-11
CES6107 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CES6664 SZX → PKX Jul 25, 01:40 UTCJul 25, 18:55 UTC17h 15m
2026-07-24 CES6664 SZX → PKX Jul 24, 23:20 UTCJul 25, 18:55 UTC19h 35m
2026-07-22 CES5652 YNJ → PVG Jul 22, 11:20 UTCJul 22, 12:55 UTC1h 35m
2026-07-21 CES5652 YNJ → PVG Jul 21, 13:40 UTCJul 22, 05:25 UTC15h 45m
2026-07-21 CES5652 YNJ → PVG Jul 21, 07:40 UTCJul 22, 05:25 UTC21h 45m
2026-07-21 CES5652 YNJ → PVG Jul 21, 07:00 UTCJul 22, 05:25 UTC22h 25m
2026-07-20 CES6664 SZX → PKX Jul 20, 16:30 UTCJul 21, 05:25 UTC12h 54m
2026-07-19 CES2034 ICN → TAO Jul 19, 04:40 UTCJul 19, 05:10 UTC30m
2026-07-19 CES2033 TAO → ICN Jul 19, 03:00 UTCJul 19, 03:35 UTC35m
2026-07-18 CES6491 - Jul 18, 08:45 UTCJul 18, 11:55 UTC3h 10m
2026-07-17 CES2034 - Jul 17, 05:04 UTCJul 17, 05:30 UTC25m
2026-07-17 CES2033 - Jul 17, 02:54 UTCJul 17, 03:20 UTC25m
2026-07-16 CES6704 - Jul 16, 01:10 UTCJul 16, 01:30 UTC20m
2026-07-15 CES6703 - Jul 15, 11:35 UTCJul 15, 23:40 UTC12h 5m
2026-07-10 CES861 - Jul 10, 11:00 UTCJul 10, 16:00 UTC5h 0m
2026-07-09 CES861 - Jul 9, 14:00 UTCJul 10, 11:25 UTC21h 25m
2026-07-08 CES6262 - Jul 8, 15:15 UTCJul 8, 15:25 UTC10m
2026-07-07 CES5032 - Jul 7, 18:45 UTCJul 7, 21:50 UTC3h 5m
2026-07-07 CES5031 - Jul 7, 11:10 UTCJul 7, 17:00 UTC5h 50m
2026-07-06 CES6686 - Jul 6, 15:00 UTCJul 6, 15:15 UTC15m
2026-07-05 CES6109 - Jul 5, 13:25 UTCJul 5, 13:40 UTC15m
2026-07-05 CES6270 - Jul 5, 10:45 UTCJul 5, 10:55 UTC10m
2026-07-04 CES2072 - Jul 4, 19:30 UTCJul 4, 20:25 UTC55m
2026-07-04 CES2071 - Jul 4, 15:50 UTCJul 4, 17:35 UTC1h 45m
2026-07-03 CES2071 - Jul 3, 21:50 UTCJul 4, 17:35 UTC19h 45m
2026-07-03 CES2071 - Jul 3, 18:55 UTCJul 3, 20:45 UTC1h 50m
2026-07-03 CES6108 - Jul 3, 10:05 UTCJul 3, 10:15 UTC10m
2026-07-03 CES6107 - Jul 3, 01:25 UTCJul 3, 01:40 UTC15m
2026-06-28 CES5016 - Jun 28, 06:59 UTCJun 28, 07:20 UTC20m
2026-06-27 CES5032 HKG → HFE Jun 27, 17:09 UTCJun 28, 04:25 UTC11h 15m
2026-06-27 CES5031 HFE → HKG Jun 27, 11:44 UTCJun 27, 15:00 UTC3h 15m
2026-06-27 CES2109 XIY → PKX Jun 27, 06:25 UTCJun 27, 06:35 UTC10m
2026-06-25 CES5032 HKG → HFE Jun 25, 17:20 UTCJun 25, 20:54 UTC3h 35m
2026-06-25 CES5031 HFE → HKG Jun 25, 11:44 UTCJun 25, 14:59 UTC3h 15m
2026-06-24 CES6108 - Jun 24, 09:19 UTCJun 24, 09:34 UTC15m
2026-06-23 CES6959 PKX → HAK Jun 23, 02:55 UTCJun 23, 03:04 UTC10m
2026-06-22 CES6959 PKX → HAK Jun 22, 02:50 UTCJun 22, 06:05 UTC3h 15m
2026-06-19 CES868 HAN → XIY Jun 19, 13:59 UTCJun 19, 14:19 UTC20m
2026-06-17 CES759 PVG → PNH Jun 17, 14:40 UTCJun 18, 07:25 UTC16h 45m
2026-06-12 CES6109 TAO → JHG Jun 12, 15:35 UTCJun 12, 15:50 UTC15m
2026-06-12 CES6270 PKX → XMN Jun 12, 11:05 UTCJun 12, 11:15 UTC10m
2026-06-12 CES6269 XMN → PKX Jun 12, 02:30 UTCJun 12, 02:50 UTC20m
2026-06-11 CES6235 PKX → HRB Jun 11, 14:30 UTCJun 11, 14:45 UTC15m
2026-06-11 CES6110 JHG → TAO Jun 11, 05:30 UTCJun 11, 05:45 UTC15m
2026-06-10 CES6109 TAO → JHG Jun 10, 13:15 UTCJun 10, 13:40 UTC25m
2026-06-10 CES6270 PKX → XMN Jun 10, 11:00 UTCJun 10, 11:15 UTC15m
2026-06-09 CES6235 PKX → HRB Jun 9, 14:30 UTCJun 9, 14:40 UTC10m
2026-06-09 CES2427 XNN → PKX Jun 9, 01:35 UTCJun 9, 01:50 UTC15m
2026-06-08 CES6208 SYX → PVG Jun 8, 15:04 UTCJun 8, 15:15 UTC10m
2026-06-08 CES6190 CAN → PKX Jun 8, 09:40 UTCJun 8, 10:00 UTC20m

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-32C3 page for operator, model, and routing details .

Mode-S 781E3E frequently asked

What is Mode-S code 781E3E?
781E3E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32C3.
Where is Mode-S 781E3E registered?
Mode-S code 781E3E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E3E broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 18:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E3E, octal 36017076, decimal 7,872,062.
What flights does 781E3E operate?
Mode-S 781E3E has broadcast 20 distinct callsigns, including CES6270, CES6109, CES5652, CES2071, CES874.