Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781B7B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-323H · AIRBUS A-350-900

Hex
781B7B
Octal
36015573
Decimal
7,871,355
Country
CN
Tail
B-323H
Type
A359
No current signal · last broadcast 2h ago
Flights observed
94
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 781B7B.

Country allocation

The ICAO 24-bit address 781B7B 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
CES5350 - 9 2026-07-08
CES223 China Eastern Airlines 9 2026-06-01
CES5341 - 8 2026-07-11
CES243 China Eastern Airlines 8 2026-06-08
CES250 China Eastern Airlines 7 2026-06-07
CES249 China Eastern Airlines 5 2026-06-06
CES224 China Eastern Airlines 5 2026-06-01
CES788 China Eastern Airlines 4 2026-04-18
CES787 China Eastern Airlines 4 2026-04-17
CES524 China Eastern Airlines 4 2026-05-11
CES567 - 3 2026-07-13
CES562 China Eastern Airlines 3 2026-05-29
CES244 China Eastern Airlines 3 2026-06-09
CES561 China Eastern Airlines 2 2026-05-28
CES5360 - 2 2026-06-18
CES5342 - 2 2026-07-12
CES523 China Eastern Airlines 2 2026-04-29
CES218 China Eastern Airlines 2 2026-06-05
CES786 China Eastern Airlines 1 2026-05-07
CES785 China Eastern Airlines 1 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CES568 - Jul 13, 10:00 UTCJul 14, 05:10 UTC19h 10m
2026-07-13 CES567 - Jul 13, 03:55 UTCJul 13, 08:05 UTC4h 10m
2026-07-12 CES567 - Jul 12, 06:40 UTCJul 13, 04:40 UTC22h 0m
2026-07-12 CES5342 - Jul 12, 05:25 UTCJul 12, 05:35 UTC10m
2026-07-11 CES5341 - Jul 11, 09:20 UTCJul 11, 09:30 UTC10m
2026-07-08 CES5350 - Jul 8, 13:25 UTCJul 8, 13:35 UTC10m
2026-07-08 CES5341 - Jul 8, 10:35 UTCJul 8, 11:10 UTC35m
2026-07-04 CES5350 - Jul 4, 14:25 UTCJul 4, 14:35 UTC10m
2026-07-04 CES5341 - Jul 4, 12:45 UTCJul 4, 13:00 UTC15m
2026-07-03 CES5350 - Jul 3, 15:15 UTCJul 3, 15:25 UTC10m
2026-07-03 CES5341 - Jul 3, 13:30 UTCJul 3, 13:40 UTC10m
2026-07-02 CES5350 - Jul 2, 12:45 UTCJul 2, 13:00 UTC15m
2026-06-18 CES5360 - Jun 18, 19:15 UTCJun 18, 19:25 UTC10m
2026-06-17 CES5360 - Jun 17, 15:00 UTCJun 17, 15:10 UTC10m
2026-06-13 CES5350 SZX → SHA Jun 13, 10:55 UTCJun 13, 11:05 UTC10m
2026-06-09 CES244 MXP → PVG Jun 9, 12:00 UTCJun 9, 18:20 UTC6h 20m
2026-06-08 CES243 PVG → MXP Jun 8, 19:15 UTCJun 9, 05:25 UTC10h 10m
2026-06-08 CES243 PVG → MXP Jun 8, 06:50 UTCJun 9, 05:25 UTC22h 35m
2026-06-08 CES243 PVG → MXP Jun 8, 05:20 UTCJun 9, 04:45 UTC23h 25m
2026-06-07 CES250 BCN → PVG Jun 7, 09:45 UTCJun 8, 03:40 UTC17h 55m
2026-06-06 CES249 PVG → BCN Jun 6, 18:19 UTCJun 7, 05:10 UTC10h 50m
2026-06-06 CES249 PVG → BCN Jun 6, 06:50 UTCJun 7, 05:10 UTC22h 20m
2026-06-06 CES249 PVG → BCN Jun 6, 06:40 UTCJun 7, 04:45 UTC22h 5m
2026-06-05 CES218 GVA → PVG Jun 5, 10:50 UTCJun 6, 05:00 UTC18h 10m
2026-06-05 CES218 GVA → PVG Jun 5, 10:20 UTCJun 6, 05:00 UTC18h 40m
2026-06-04 CES217 PVG → GVA Jun 4, 19:20 UTCJun 5, 05:15 UTC9h 55m
2026-06-01 CES224 CAI → PVG Jun 1, 11:30 UTCJun 1, 17:05 UTC5h 35m
2026-06-01 CES223 PVG → CAI Jun 1, 02:30 UTCJun 1, 05:55 UTC3h 25m
2026-05-30 CES7236 HAN → PVG May 30, 23:15 UTCMay 31, 01:11 UTC1h 56m
2026-05-30 CES7235 PVG → HAN May 30, 08:05 UTCMay 30, 18:55 UTC10h 50m
2026-05-29 CES562 SYD → PVG May 29, 08:50 UTCMay 30, 08:25 UTC23h 35m
2026-05-29 CES562 SYD → PVG May 29, 01:15 UTCMay 29, 10:15 UTC9h 0m
2026-05-28 CES561 PVG → SYD May 28, 13:25 UTCMay 28, 22:50 UTC9h 25m
2026-05-28 CES5342 SZX → PVG May 28, 06:45 UTCMay 28, 06:55 UTC10m
2026-05-28 CES5333 SHA → SZX May 28, 02:50 UTCMay 28, 03:15 UTC25m
2026-05-26 CES5350 SZX → SHA May 26, 10:39 UTCMay 26, 10:50 UTC10m
2026-05-26 CES5341 SHA → SZX May 26, 07:45 UTCMay 26, 08:04 UTC20m
2026-05-24 CES5341 SHA → SZX May 24, 08:55 UTCMay 24, 09:40 UTC45m
2026-05-23 CES5316 CAN → PVG May 23, 06:50 UTCMay 23, 07:00 UTC10m
2026-05-22 CES5350 SZX → SHA May 22, 12:25 UTCMay 22, 12:35 UTC10m
2026-05-22 CES5341 SHA → SZX May 22, 09:45 UTCMay 22, 10:05 UTC20m
2026-05-20 CES5350 SZX → SHA May 20, 11:00 UTCMay 20, 11:15 UTC15m
2026-05-20 CES5341 SHA → SZX May 20, 08:05 UTCMay 20, 08:25 UTC20m
2026-05-18 CES5350 SZX → SHA May 18, 11:20 UTCMay 18, 11:30 UTC10m
2026-05-15 CES244 MXP → PVG May 15, 12:10 UTCMay 15, 18:35 UTC6h 24m
2026-05-14 CES243 PVG → MXP May 14, 12:35 UTCMay 15, 05:40 UTC17h 5m
2026-05-14 CES243 PVG → MXP May 14, 09:30 UTCMay 15, 05:40 UTC20h 10m
2026-05-14 CES567 PVG → SIN May 14, 06:55 UTCMay 14, 07:10 UTC15m
2026-05-13 CES250 BCN → PVG May 13, 09:30 UTCMay 14, 03:30 UTC18h 0m
2026-05-12 CES249 PVG → BCN May 12, 21:40 UTCMay 13, 05:15 UTC7h 35m

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-323H page for operator, model, and routing details .

Mode-S 781B7B frequently asked

What is Mode-S code 781B7B?
781B7B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-323H.
Where is Mode-S 781B7B registered?
Mode-S code 781B7B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B7B broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B7B, octal 36015573, decimal 7,871,355.
What flights does 781B7B operate?
Mode-S 781B7B has broadcast 20 distinct callsigns, including CES5350, CES223, CES5341, CES243, CES250.