Apparatus

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sensors Mode-S transponder

7819D6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-220D · BOEING 787-9 Dreamliner

Hex
7819D6
Octal
36014726
Decimal
7,870,934
Country
CN
Tail
B-220D
Type
B789
No current signal · last broadcast 14h ago
Flights observed
7
Distinct callsigns
3
Country
CN
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 7819D6.

Country allocation

The ICAO 24-bit address 7819D6 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
CES213 China Eastern Airlines 3 2026-04-14
CES545 China Eastern Airlines 2 2026-04-13
CES544 China Eastern Airlines 2 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 CES213 PVG → LGW Apr 14, 09:40 UTCApr 14, 10:30 UTC50m
2026-04-14 CES213 PVG → LGW Apr 14, 07:10 UTCApr 14, 07:25 UTC15m
2026-04-14 CES213 PVG → LGW Apr 14, 05:20 UTCApr 14, 07:10 UTC1h 50m
2026-04-13 CES544 SIN → PVG Apr 13, 19:55 UTCApr 13, 20:30 UTC35m
2026-04-13 CES544 SIN → PVG Apr 13, 17:20 UTCApr 13, 20:10 UTC2h 50m
2026-04-13 CES545 PVG → SIN Apr 13, 13:05 UTCApr 13, 13:40 UTC35m
2026-04-13 CES545 PVG → SIN Apr 13, 09:30 UTCApr 13, 10:10 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-220D page for operator, model, and routing details .

Mode-S 7819D6 frequently asked

What is Mode-S code 7819D6?
7819D6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-220D.
Where is Mode-S 7819D6 registered?
Mode-S code 7819D6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7819D6 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 7819D6, octal 36014726, decimal 7,870,934.
What flights does 7819D6 operate?
Mode-S 7819D6 has broadcast 3 distinct callsigns, including CES213, CES545, CES544.