Apparatus

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sensors Mode-S transponder

781E42

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32C8 · AIRBUS A-320neo

Hex
781E42
Octal
36017102
Decimal
7,872,066
Country
CN
Tail
B-32C8
Type
A20N
Broadcasting now · callsign CES867 · 30,000 ft
Flights observed
79
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Current position

781E42 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781E42 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
CES203 - 5 2026-06-29
CES6108 China Eastern Airlines 4 2026-06-12
CES6107 China Eastern Airlines 4 2026-06-12
CES796 China Eastern Airlines 3 2026-05-06
CES795 China Eastern Airlines 3 2026-05-06
CES6262 China Eastern Airlines 3 2026-06-11
CES5022 - 3 2026-07-03
CES5021 - 3 2026-07-03
CES5016 China Eastern Airlines 3 2026-06-07
CES5015 China Eastern Airlines 3 2026-06-07
CES874 - 2 2026-07-05
CES7482 - 2 2026-07-09
CES7481 - 2 2026-07-09
CES6270 China Eastern Airlines 2 2026-06-03
CES5245 - 2 2026-07-06
CES5031 China Eastern Airlines 2 2026-05-31
CES2072 China Eastern Airlines 2 2026-05-04
CES2071 China Eastern Airlines 2 2026-05-04
CES2070 - 2 2026-07-13
CES2069 - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CES2070 - Jul 13, 06:25 UTCJul 13, 09:25 UTC3h 0m
2026-07-13 CES2069 - Jul 13, 01:20 UTCJul 13, 04:25 UTC3h 5m
2026-07-10 CES7368 - Jul 10, 17:40 UTCJul 10, 18:55 UTC1h 15m
2026-07-10 CES7367 - Jul 10, 00:50 UTCJul 10, 16:00 UTC15h 10m
2026-07-09 CES7482 - Jul 9, 06:35 UTCJul 10, 00:55 UTC18h 20m
2026-07-09 CES7481 - Jul 9, 03:50 UTCJul 9, 04:25 UTC35m
2026-07-06 CES5245 - Jul 6, 12:45 UTCJul 6, 13:00 UTC15m
2026-07-05 CES874 - Jul 5, 09:45 UTCJul 5, 11:05 UTC1h 20m
2026-07-05 CES874 - Jul 5, 08:15 UTCJul 5, 08:30 UTC15m
2026-07-05 CES873 - Jul 5, 03:35 UTCJul 5, 06:40 UTC3h 5m
2026-07-03 CES5022 - Jul 3, 05:45 UTCJul 3, 06:10 UTC25m
2026-07-03 CES5021 - Jul 3, 03:40 UTCJul 3, 04:10 UTC30m
2026-06-30 CES7482 - Jun 30, 06:15 UTCJun 30, 06:30 UTC15m
2026-06-30 CES7481 - Jun 30, 04:00 UTCJun 30, 04:25 UTC25m
2026-06-29 CES204 - Jun 29, 06:44 UTCJun 29, 07:09 UTC25m
2026-06-29 CES203 - Jun 29, 04:50 UTCJun 29, 05:15 UTC25m
2026-06-28 CES203 - Jun 28, 08:34 UTCJun 29, 05:15 UTC20h 40m
2026-06-28 CES203 - Jun 28, 05:40 UTCJun 28, 05:55 UTC15m
2026-06-28 CES203 - Jun 28, 04:44 UTCJun 28, 04:55 UTC10m
2026-06-25 CES5022 - Jun 25, 05:55 UTCJun 25, 06:20 UTC25m
2026-06-25 CES5021 - Jun 25, 03:50 UTCJun 25, 04:04 UTC15m
2026-06-20 CES5022 - Jun 20, 05:59 UTCJun 20, 06:19 UTC20m
2026-06-20 CES5021 - Jun 20, 03:59 UTCJun 20, 04:29 UTC30m
2026-06-19 CES2139 XIY → SYX Jun 19, 09:04 UTCJun 19, 12:19 UTC3h 15m
2026-06-19 CES6252 - Jun 19, 03:05 UTCJun 19, 03:15 UTC10m
2026-06-12 CES6108 URC → PKX Jun 12, 10:05 UTCJun 12, 10:15 UTC10m
2026-06-12 CES6107 NGB → TAO Jun 12, 01:25 UTCJun 12, 01:50 UTC25m
2026-06-11 CES6262 CAN → XIY Jun 11, 15:00 UTCJun 11, 15:15 UTC15m
2026-06-10 CES2283 XIY → DSN Jun 10, 13:20 UTCJun 10, 13:35 UTC15m
2026-06-10 CES6108 URC → PKX Jun 10, 09:25 UTCJun 10, 09:40 UTC15m
2026-06-10 CES6107 NGB → TAO Jun 10, 01:25 UTCJun 10, 01:45 UTC20m
2026-06-09 CES2130 LHW → PKX Jun 9, 04:15 UTCJun 9, 04:30 UTC15m
2026-06-07 CES5016 HKG → PKX Jun 7, 10:05 UTCJun 7, 10:15 UTC10m
2026-06-07 CES5016 HKG → PKX Jun 7, 05:50 UTCJun 7, 06:10 UTC20m
2026-06-07 CES5015 PKX → HKG Jun 7, 03:05 UTCJun 7, 03:35 UTC30m
2026-06-06 CES5197 HRB → JGD Jun 6, 00:25 UTCJun 6, 00:35 UTC10m
2026-06-03 CES6270 PKX → XMN Jun 3, 11:30 UTCJun 3, 11:40 UTC10m
2026-05-31 CES5032 HKG → HFE May 31, 17:10 UTCMay 31, 20:15 UTC3h 5m
2026-05-31 CES5031 HFE → HKG May 31, 14:45 UTCMay 31, 15:10 UTC25m
2026-05-31 CES5031 HFE → HKG May 31, 11:50 UTCMay 31, 12:00 UTC10m
2026-05-29 CES2342 ZUH → XIY May 29, 01:15 UTCMay 29, 01:30 UTC15m
2026-05-25 CES6552 HRB → HFE May 25, 11:15 UTCMay 25, 15:40 UTC4h 25m
2026-05-25 CES5056 MFM → HFE May 25, 06:30 UTCMay 25, 06:50 UTC20m
2026-05-24 CES770 SIN → HFE May 24, 19:15 UTCMay 24, 19:45 UTC30m
2026-05-24 CES769 HFE → SIN May 24, 13:55 UTCMay 24, 16:55 UTC3h 0m
2026-05-16 CES5614 HRB → PVG May 16, 10:20 UTCMay 16, 10:46 UTC25m
2026-05-15 CES9008 - May 15, 13:45 UTCMay 16, 10:46 UTC21h 0m
2026-05-14 CES510 HKG → PVG May 14, 09:15 UTCMay 14, 10:40 UTC1h 25m
2026-05-14 CES509 PVG → HKG May 14, 06:00 UTCMay 14, 07:35 UTC1h 35m
2026-05-07 CES6108 URC → PKX May 7, 09:25 UTCMay 7, 09:35 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-32C8 page for operator, model, and routing details .

Mode-S 781E42 frequently asked

What is Mode-S code 781E42?
781E42 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32C8.
Where is Mode-S 781E42 registered?
Mode-S code 781E42 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E42 broadcasting right now?
Yes. Mode-S 781E42 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E42, octal 36017102, decimal 7,872,066.
What flights does 781E42 operate?
Mode-S 781E42 has broadcast 20 distinct callsigns, including CES203, CES6108, CES6107, CES796, CES795.