sensors Mode-S transponder

7808AA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5679 · BOEING 737-800

Hex
7808AA
Octal
36004252
Decimal
7,866,538
Country
CN
Tail
B-5679
Type
B738
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
5
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7808AA.

Country allocation

The ICAO 24-bit address 7808AA 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 5 distinct

Callsign Airline Flights Last seen
CCA4365 - 1 2026-04-13
CCA4330 Air China 1 2026-04-13
CCA4329 - 1 2026-04-13
CCA420 - 1 2026-04-14
CCA419 Air China 1 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 CCA420 - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-14 CCA419 CKG → HKG Apr 14, 05:15 UTCApr 14, 05:20 UTC5m
2026-04-13 CCA4365 - Apr 13, 07:20 UTCApr 13, 07:35 UTC15m
2026-04-13 CCA4329 - Apr 13, 05:45 UTCApr 13, 05:55 UTC10m
2026-04-13 CCA4330 SZX → CTU Apr 13, 00:25 UTCApr 13, 00:35 UTC10m

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-5679 page for operator, model, and routing details .

Mode-S 7808AA frequently asked

What is Mode-S code 7808AA?
7808AA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5679.
Where is Mode-S 7808AA registered?
Mode-S code 7808AA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7808AA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7808AA, octal 36004252, decimal 7,866,538.
What flights does 7808AA operate?
Mode-S 7808AA has broadcast 5 distinct callsigns, including CCA4365, CCA4330, CCA4329, CCA420, CCA419.