Apparatus

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sensors Mode-S transponder

781E90

ICAO 24-bit transponder address · allocated to China

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

Hex
781E90
Octal
36017220
Decimal
7,872,144
Country
CN
Tail
B-32CT
Type
A20N
No current signal · last broadcast Jul 26, 09:50 UTC
Flights observed
70
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 09:50 UTC

Last known position

Most recent position reported by Mode-S 781E90.

Country allocation

The ICAO 24-bit address 781E90 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 - 5 2026-07-10
CES2069 China Eastern Airlines 4 2026-07-26
CES873 - 3 2026-07-10
CES795 China Eastern Airlines 3 2026-04-13
CES6110 - 3 2026-07-17
CES6109 - 3 2026-07-16
CES5100 China Eastern Airlines 3 2026-06-25
CES5022 China Eastern Airlines 3 2026-05-20
CES2070 China Eastern Airlines 3 2026-07-26
CES5245 China Eastern Airlines 2 2026-04-27
CES2332 China Eastern Airlines 2 2026-07-23
CES2311 China Eastern Airlines 2 2026-05-08
CES892 - 1 2026-06-27
CES891 - 1 2026-06-27
CES868 - 1 2026-07-03
CES867 - 1 2026-07-03
CES796 - 1 2026-04-13
CES760 China Eastern Airlines 1 2026-06-10
CES6915 - 1 2026-07-04
CES6647 China Eastern Airlines 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES2070 SIN → XIY Jul 26, 06:40 UTCJul 26, 09:50 UTC3h 10m
2026-07-26 CES2069 XIY → SIN Jul 26, 01:55 UTCJul 26, 04:55 UTC3h 0m
2026-07-25 CES2069 XIY → SIN Jul 25, 09:15 UTCJul 26, 04:55 UTC19h 40m
2026-07-25 CES2070 SIN → XIY Jul 25, 06:35 UTCJul 25, 07:05 UTC30m
2026-07-24 CES2069 XIY → SIN Jul 24, 11:05 UTCJul 25, 05:05 UTC18h 0m
2026-07-24 CES2270 SZX → XIY Jul 24, 05:00 UTCJul 24, 05:15 UTC15m
2026-07-23 CES2332 PVG → TYN Jul 23, 07:35 UTCJul 23, 07:45 UTC10m
2026-07-20 CES2428 PKX → XNN Jul 20, 04:55 UTCJul 20, 05:10 UTC15m
2026-07-20 CES2427 XNN → PKX Jul 20, 01:35 UTCJul 20, 01:45 UTC10m
2026-07-19 CES6207 TAO → LHW Jul 19, 13:00 UTCJul 19, 13:20 UTC20m
2026-07-19 CES2130 LHW → PKX Jul 19, 04:15 UTCJul 19, 04:25 UTC10m
2026-07-17 CES6110 - Jul 17, 05:25 UTCJul 17, 05:39 UTC15m
2026-07-16 CES6109 - Jul 16, 13:25 UTCJul 16, 13:49 UTC25m
2026-07-16 CES6270 - Jul 16, 10:45 UTCJul 16, 10:55 UTC10m
2026-07-15 CES5032 - Jul 15, 17:00 UTCJul 16, 02:50 UTC9h 50m
2026-07-15 CES5031 - Jul 15, 12:10 UTCJul 15, 15:05 UTC2h 55m
2026-07-14 CES6230 - Jul 14, 13:05 UTCJul 14, 13:15 UTC10m
2026-07-14 CES6229 - Jul 14, 03:40 UTCJul 14, 04:00 UTC20m
2026-07-13 CES6307 - Jul 13, 10:00 UTCJul 13, 10:15 UTC15m
2026-07-13 CES6110 - Jul 13, 05:20 UTCJul 13, 05:35 UTC15m
2026-07-12 CES6109 - Jul 12, 13:15 UTCJul 12, 13:40 UTC25m
2026-07-10 CES874 - Jul 10, 07:55 UTCJul 10, 10:55 UTC3h 0m
2026-07-10 CES873 - Jul 10, 03:40 UTCJul 10, 06:35 UTC2h 55m
2026-07-08 CES6638 - Jul 8, 16:20 UTCJul 8, 16:45 UTC25m
2026-07-08 CES6637 - Jul 8, 14:50 UTCJul 8, 15:00 UTC10m
2026-07-06 CES874 - Jul 6, 09:40 UTCJul 6, 11:05 UTC1h 25m
2026-07-06 CES874 - Jul 6, 08:15 UTCJul 6, 08:30 UTC15m
2026-07-06 CES873 - Jul 6, 03:30 UTCJul 6, 06:40 UTC3h 10m
2026-07-04 CES6915 - Jul 4, 12:45 UTCJul 4, 16:35 UTC3h 50m
2026-07-03 CES868 - Jul 3, 13:35 UTCJul 3, 13:55 UTC20m
2026-07-03 CES867 - Jul 3, 03:05 UTCJul 3, 11:50 UTC8h 45m
2026-06-30 CES2342 - Jun 30, 00:45 UTCJun 30, 01:00 UTC15m
2026-06-27 CES892 - Jun 27, 08:49 UTCJun 27, 13:24 UTC4h 35m
2026-06-27 CES891 - Jun 27, 07:15 UTCJun 27, 07:34 UTC20m
2026-06-25 CES5100 PEK → PVG Jun 25, 23:14 UTCJun 25, 23:30 UTC15m
2026-06-25 CES5068 - Jun 25, 08:14 UTCJun 25, 08:34 UTC20m
2026-06-25 CES5067 - Jun 25, 06:05 UTCJun 25, 06:35 UTC30m
2026-06-24 CES5062 - Jun 24, 05:59 UTCJun 24, 06:35 UTC35m
2026-06-24 CES5061 - Jun 24, 03:15 UTCJun 24, 04:05 UTC50m
2026-06-23 CES5100 PEK → PVG Jun 23, 23:14 UTCJun 23, 23:24 UTC10m
2026-06-10 CES760 PNH → PVG Jun 10, 14:40 UTCJun 10, 20:30 UTC5h 50m
2026-06-07 CES2116 PKX → XIY Jun 7, 09:50 UTCJun 7, 10:05 UTC15m
2026-06-05 CES6262 CAN → XIY Jun 5, 15:05 UTCJun 5, 15:15 UTC10m
2026-06-03 CES6647 PKX → CTU Jun 3, 09:00 UTCJun 3, 09:25 UTC25m
2026-06-03 CES6110 JHG → TAO Jun 3, 05:25 UTCJun 3, 05:35 UTC10m
2026-06-02 CES6109 TAO → JHG Jun 2, 13:20 UTCJun 2, 13:45 UTC25m
2026-05-30 CES2214 XMN → XIY May 30, 05:55 UTCMay 30, 06:10 UTC15m
2026-05-29 CES874 KUL → KMG May 29, 10:45 UTCMay 29, 11:20 UTC35m
2026-05-29 CES874 KUL → KMG May 29, 08:20 UTCMay 29, 08:35 UTC15m
2026-05-29 CES873 KMG → KUL May 29, 06:25 UTCMay 29, 06:45 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-32CT page for operator, model, and routing details .

Mode-S 781E90 frequently asked

What is Mode-S code 781E90?
781E90 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CT.
Where is Mode-S 781E90 registered?
Mode-S code 781E90 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E90 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E90, octal 36017220, decimal 7,872,144.
What flights does 781E90 operate?
Mode-S 781E90 has broadcast 20 distinct callsigns, including CES874, CES2069, CES873, CES795, CES6110.