Apparatus

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sensors Mode-S transponder

781DE6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32A9 · AIRBUS A-320neo

Hex
781DE6
Octal
36016746
Decimal
7,871,974
Country
CN
Tail
B-32A9
Type
A20N
Broadcasting now · callsign CES853 · 2,025 ft
Flights observed
52
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Current position

781DE6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781DE6 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
CES873 - 6 2026-06-30
CES874 - 5 2026-06-30
CES509 China Eastern Airlines 4 2026-06-11
CES5022 China Eastern Airlines 3 2026-06-03
CES868 - 2 2026-07-10
CES510 China Eastern Airlines 2 2026-06-11
CES5021 China Eastern Airlines 2 2026-06-03
CES2130 - 2 2026-07-12
CES204 China Eastern Airlines 2 2026-05-18
CES203 China Eastern Airlines 2 2026-05-18
CES867 China Eastern Airlines 1 2026-06-05
CES853 - 1 2026-07-14
CES796 China Eastern Airlines 1 2026-04-17
CES795 China Eastern Airlines 1 2026-04-17
CES6638 - 1 2026-07-12
CES6229 - 1 2026-07-11
CES6108 China Eastern Airlines 1 2026-04-18
CES6050 China Eastern Airlines 1 2026-06-12
CES6049 China Eastern Airlines 1 2026-06-11
CES5637 China Eastern Airlines 1 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CES853 - Jul 14, 09:15 UTCJul 14, 09:30 UTC15m
2026-07-12 CES6638 - Jul 12, 13:45 UTCJul 12, 14:01 UTC15m
2026-07-12 CES2130 - Jul 12, 04:30 UTCJul 12, 04:45 UTC15m
2026-07-11 CES6229 - Jul 11, 04:45 UTCJul 11, 05:10 UTC25m
2026-07-10 CES868 - Jul 10, 13:55 UTCJul 10, 14:05 UTC10m
2026-07-06 CES2183 - Jul 6, 23:55 UTCJul 7, 03:50 UTC3h 55m
2026-07-01 CES2140 - Jul 1, 12:10 UTCJul 1, 12:20 UTC10m
2026-07-01 CES2139 - Jul 1, 08:55 UTCJul 1, 09:35 UTC40m
2026-06-30 CES874 - Jun 30, 10:20 UTCJul 1, 09:20 UTC23h 0m
2026-06-30 CES874 - Jun 30, 08:00 UTCJun 30, 10:55 UTC2h 55m
2026-06-30 CES873 - Jun 30, 03:40 UTCJun 30, 06:40 UTC3h 0m
2026-06-28 CES2070 - Jun 28, 06:30 UTCJun 28, 09:34 UTC3h 5m
2026-06-28 CES2069 - Jun 28, 01:15 UTCJun 28, 04:15 UTC3h 0m
2026-06-25 CES874 - Jun 25, 08:34 UTCJun 25, 11:44 UTC3h 10m
2026-06-25 CES873 - Jun 25, 06:09 UTCJun 25, 06:50 UTC40m
2026-06-24 CES873 - Jun 24, 09:34 UTCJun 25, 04:10 UTC18h 35m
2026-06-24 CES873 - Jun 24, 09:05 UTCJun 25, 04:10 UTC19h 5m
2026-06-23 CES2270 - Jun 23, 04:50 UTCJun 23, 05:45 UTC55m
2026-06-22 CES2130 - Jun 22, 04:15 UTCJun 22, 04:30 UTC15m
2026-06-12 CES6050 SIN → PVG Jun 12, 10:40 UTCJun 12, 14:40 UTC4h 0m
2026-06-11 CES6049 PVG → SIN Jun 11, 23:40 UTCJun 12, 08:30 UTC8h 51m
2026-06-11 CES510 HKG → PVG Jun 11, 09:35 UTCJun 11, 15:25 UTC5h 50m
2026-06-11 CES509 PVG → HKG Jun 11, 06:55 UTCJun 11, 07:10 UTC15m
2026-06-11 CES509 PVG → HKG Jun 11, 05:50 UTCJun 11, 06:25 UTC35m
2026-06-05 CES868 HAN → XIY Jun 5, 14:25 UTCJun 5, 14:50 UTC25m
2026-06-05 CES867 XIY → HAN Jun 5, 11:20 UTCJun 5, 11:40 UTC20m
2026-06-03 CES5022 ICN → TAO Jun 3, 05:35 UTCJun 3, 05:55 UTC20m
2026-06-03 CES5021 TAO → ICN Jun 3, 03:40 UTCJun 3, 04:10 UTC30m
2026-06-01 CES874 KUL → KMG Jun 1, 10:45 UTCJun 1, 11:15 UTC30m
2026-06-01 CES874 KUL → KMG Jun 1, 08:15 UTCJun 1, 08:35 UTC20m
2026-06-01 CES873 KMG → KUL Jun 1, 06:05 UTCJun 1, 06:30 UTC25m
2026-06-01 CES873 KMG → KUL Jun 1, 03:20 UTCJun 1, 04:00 UTC40m
2026-05-29 CES5062 ICN → PVG May 29, 06:15 UTCMay 29, 06:35 UTC20m
2026-05-29 CES5061 PVG → ICN May 29, 03:45 UTCMay 29, 04:25 UTC40m
2026-05-18 CES204 HKG → XIY May 18, 06:35 UTCMay 18, 06:45 UTC10m
2026-05-18 CES203 XIY → HKG May 18, 04:40 UTCMay 18, 05:10 UTC30m
2026-05-15 CES204 HKG → XIY May 15, 08:40 UTCMay 15, 09:00 UTC20m
2026-05-15 CES203 XIY → HKG May 15, 04:35 UTCMay 15, 05:00 UTC25m
2026-05-12 CES510 HKG → PVG May 12, 09:15 UTCMay 12, 10:30 UTC1h 15m
2026-05-12 CES509 PVG → HKG May 12, 07:00 UTCMay 12, 07:15 UTC15m
2026-05-12 CES509 PVG → HKG May 12, 05:50 UTCMay 12, 06:25 UTC35m
2026-05-10 CES5637 PVG → HDG May 10, 04:25 UTCMay 10, 05:04 UTC40m
2026-05-05 CES2211 XIY → HRB May 5, 03:20 UTCMay 5, 03:40 UTC20m
2026-04-25 CES2342 ZUH → XIY Apr 25, 01:10 UTCApr 25, 01:20 UTC10m
2026-04-22 CES5022 ICN → TAO Apr 22, 05:35 UTCApr 22, 05:50 UTC15m
2026-04-20 CES5022 ICN → TAO Apr 20, 05:30 UTCApr 20, 05:50 UTC20m
2026-04-20 CES5021 TAO → ICN Apr 20, 03:50 UTCApr 20, 04:05 UTC15m
2026-04-18 CES6108 URC → PKX Apr 18, 09:30 UTCApr 18, 09:40 UTC10m
2026-04-17 CES796 KUL → PKX Apr 17, 18:10 UTCApr 17, 18:25 UTC15m
2026-04-17 CES795 PKX → KUL Apr 17, 16:20 UTCApr 17, 16:50 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-32A9 page for operator, model, and routing details .

Mode-S 781DE6 frequently asked

What is Mode-S code 781DE6?
781DE6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32A9.
Where is Mode-S 781DE6 registered?
Mode-S code 781DE6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781DE6 broadcasting right now?
Yes. Mode-S 781DE6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781DE6, octal 36016746, decimal 7,871,974.
What flights does 781DE6 operate?
Mode-S 781DE6 has broadcast 20 distinct callsigns, including CES873, CES874, CES509, CES5022, CES868.