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 15h ago
Flights observed
42
Distinct callsigns
20
Country
CN
Last broadcast
15h ago

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
CES874 China Eastern Airlines 3 2026-05-31
CES873 China Eastern Airlines 2 2026-05-30
CES796 China Eastern Airlines 2 2026-05-20
CES795 China Eastern Airlines 2 2026-05-20
CES5022 China Eastern Airlines 2 2026-06-01
CES5021 China Eastern Airlines 2 2026-06-01
CES5016 China Eastern Airlines 2 2026-05-20
CES5015 China Eastern Airlines 2 2026-05-20
CES204 China Eastern Airlines 2 2026-06-03
CES203 China Eastern Airlines 2 2026-06-03
CES867 China Eastern Airlines 1 2026-05-29
CES759 China Eastern Airlines 1 2026-04-18
CES6471 China Eastern Airlines 1 2026-05-21
CES6270 China Eastern Airlines 1 2026-05-21
CES6262 China Eastern Airlines 1 2026-05-04
CES6230 - 1 2026-05-07
CES6229 China Eastern Airlines 1 2026-05-07
CES6160 China Eastern Airlines 1 2026-05-07
CES6110 China Eastern Airlines 1 2026-05-09
CES6109 China Eastern Airlines 1 2026-05-08

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-06-03 CES204 HKG → XIY Jun 3, 06:50 UTCJun 3, 07:05 UTC15m
2026-06-03 CES203 XIY → HKG Jun 3, 04:30 UTCJun 3, 05:00 UTC30m
2026-06-01 CES5022 ICN → TAO Jun 1, 05:55 UTCJun 1, 06:15 UTC20m
2026-06-01 CES5021 TAO → ICN Jun 1, 03:50 UTCJun 1, 04:10 UTC20m
2026-05-31 CES874 KUL → KMG May 31, 10:20 UTCMay 31, 10:55 UTC35m
2026-05-30 CES874 KUL → KMG May 30, 10:40 UTCMay 30, 11:15 UTC35m
2026-05-30 CES874 KUL → KMG May 30, 07:55 UTCMay 30, 08:10 UTC15m
2026-05-30 CES873 KMG → KUL May 30, 06:00 UTCMay 30, 06:25 UTC25m
2026-05-29 CES873 KMG → KUL May 29, 13:40 UTCMay 30, 03:55 UTC14h 15m
2026-05-29 CES867 XIY → HAN May 29, 02:50 UTCMay 29, 11:40 UTC8h 50m
2026-05-25 CES204 HKG → XIY May 25, 06:50 UTCMay 25, 07:05 UTC15m
2026-05-25 CES203 XIY → HKG May 25, 04:30 UTCMay 25, 05:10 UTC40m
2026-05-22 CES2342 ZUH → XIY May 22, 01:10 UTCMay 22, 01:25 UTC15m
2026-05-21 CES6471 HFE → XNN May 21, 21:20 UTCMay 21, 21:40 UTC20m
2026-05-21 CES6270 PKX → XMN May 21, 10:55 UTCMay 21, 11:10 UTC15m
2026-05-20 CES796 KUL → PKX May 20, 17:50 UTCMay 20, 18:05 UTC15m
2026-05-20 CES795 PKX → KUL May 20, 13:15 UTCMay 20, 16:30 UTC3h 15m
2026-05-20 CES5016 HKG → PKX May 20, 06:05 UTCMay 20, 06:20 UTC15m
2026-05-20 CES5015 PKX → HKG May 20, 03:35 UTCMay 20, 04:15 UTC40m
2026-05-17 CES5022 ICN → TAO May 17, 05:35 UTCMay 17, 05:55 UTC20m
2026-05-17 CES5021 TAO → ICN May 17, 03:50 UTCMay 17, 04:15 UTC25m
2026-05-10 CES5016 HKG → PKX May 10, 05:50 UTCMay 10, 06:04 UTC15m
2026-05-10 CES5015 PKX → HKG May 10, 03:20 UTCMay 10, 03:50 UTC30m
2026-05-09 CES6110 JHG → TAO May 9, 05:15 UTCMay 9, 05:30 UTC15m
2026-05-08 CES6109 TAO → JHG May 8, 13:30 UTCMay 8, 13:40 UTC10m
2026-05-08 CES6108 URC → PKX May 8, 09:25 UTCMay 8, 09:39 UTC15m
2026-05-08 CES6107 NGB → TAO May 8, 01:14 UTCMay 8, 01:40 UTC25m
2026-05-07 CES6230 - May 7, 13:20 UTCMay 7, 13:35 UTC15m
2026-05-07 CES6229 TAO → JMU May 7, 03:45 UTCMay 7, 04:10 UTC25m
2026-05-07 CES6160 SZX → XIY May 7, 00:05 UTCMay 7, 00:20 UTC15m
2026-05-05 CES796 KUL → PKX May 5, 17:35 UTCMay 6, 09:35 UTC16h 0m
2026-05-05 CES795 PKX → KUL May 5, 12:35 UTCMay 5, 16:10 UTC3h 35m
2026-05-04 CES6262 CAN → XIY May 4, 14:55 UTCMay 4, 15:10 UTC15m
2026-05-03 CES2072 BKK → PKX May 3, 19:55 UTCMay 3, 21:50 UTC1h 55m
2026-05-03 CES2071 PKX → BKK May 3, 17:24 UTCMay 3, 17:54 UTC30m
2026-05-02 CES2271 XIY → CGQ May 2, 01:10 UTCMay 2, 07:30 UTC6h 20m
2026-04-26 CES2245 XIY → HRB Apr 26, 10:25 UTCApr 26, 15:00 UTC4h 35m
2026-04-22 CES5062 ICN → PVG Apr 22, 05:50 UTCApr 22, 06:15 UTC25m
2026-04-22 CES5061 PVG → ICN Apr 22, 03:30 UTCApr 22, 04:10 UTC40m
2026-04-18 CES759 PVG → PNH Apr 18, 14:00 UTCApr 18, 19:55 UTC5h 55m
2026-04-17 CES2070 SIN → XIY Apr 17, 06:40 UTCApr 17, 07:10 UTC30m
2026-04-17 CES2069 XIY → SIN Apr 17, 04:10 UTCApr 17, 04:30 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 15h ago.
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 CES874, CES873, CES796, CES795, CES5022.