sensors Mode-S transponder

781C0C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-324W · AIRBUS A-350-900

Hex
781C0C
Octal
36016014
Decimal
7,871,500
Country
CN
Tail
B-324W
Type
A359
No current signal · last broadcast 14h ago
Flights observed
6
Distinct callsigns
3
Country
CN
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 781C0C.

Country allocation

The ICAO 24-bit address 781C0C 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 3 distinct

Callsign Airline Flights Last seen
CES561 China Eastern Airlines 3 2026-04-13
CES562 China Eastern Airlines 2 2026-04-14
CES244 China Eastern Airlines 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 CES562 SYD → PVG Apr 14, 09:15 UTCApr 14, 10:30 UTC1h 15m
2026-04-14 CES562 SYD → PVG Apr 14, 08:15 UTCApr 14, 09:05 UTC50m
2026-04-13 CES561 PVG → SYD Apr 13, 21:45 UTCApr 13, 22:50 UTC1h 5m
2026-04-13 CES561 PVG → SYD Apr 13, 15:50 UTCApr 13, 16:00 UTC10m
2026-04-13 CES561 PVG → SYD Apr 13, 13:40 UTCApr 13, 16:00 UTC2h 20m
2026-04-12 CES244 MXP → PVG Apr 12, 17:30 UTCApr 12, 18:10 UTC40m

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-324W page for operator, model, and routing details .

Mode-S 781C0C frequently asked

What is Mode-S code 781C0C?
781C0C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-324W.
Where is Mode-S 781C0C registered?
Mode-S code 781C0C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781C0C broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781C0C, octal 36016014, decimal 7,871,500.
What flights does 781C0C operate?
Mode-S 781C0C has broadcast 3 distinct callsigns, including CES561, CES562, CES244.