sensors Mode-S transponder

781087

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8648 · AIRBUS A-321

Hex
781087
Octal
36010207
Decimal
7,868,551
Country
CN
Tail
B-8648
Type
A321
No current signal · last broadcast 15h ago
Flights observed
5
Distinct callsigns
4
Country
CN
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 781087.

Country allocation

The ICAO 24-bit address 781087 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 4 distinct

Callsign Airline Flights Last seen
CES5243 China Eastern Airlines 2 2026-04-13
CES560 China Eastern Airlines 1 2026-04-14
CES559 - 1 2026-04-14
CES5244 - 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 CES560 ICN → TAO Apr 14, 07:50 UTCApr 14, 08:15 UTC25m
2026-04-14 CES559 - Apr 14, 06:10 UTCApr 14, 06:30 UTC20m
2026-04-13 CES5244 - Apr 13, 10:25 UTCApr 13, 10:40 UTC15m
2026-04-13 CES5243 NGB → SZX Apr 13, 07:55 UTCApr 13, 08:05 UTC10m
2026-04-13 CES5243 NGB → SZX Apr 13, 07:15 UTCApr 13, 08:05 UTC50m

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-8648 page for operator, model, and routing details .

Mode-S 781087 frequently asked

What is Mode-S code 781087?
781087 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8648.
Where is Mode-S 781087 registered?
Mode-S code 781087 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781087 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781087, octal 36010207, decimal 7,868,551.
What flights does 781087 operate?
Mode-S 781087 has broadcast 4 distinct callsigns, including CES5243, CES560, CES559, CES5244.