sensors Mode-S transponder

84C0DA

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA23PC

Hex
84C0DA
Octal
41140332
Decimal
8,700,122
Country
JP
Tail
JA23PC
No current signal · last broadcast 3h ago
Flights observed
5
Distinct callsigns
1
Country
JP
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 84C0DA.

Country allocation

The ICAO 24-bit address 84C0DA falls within the block assigned to Japan (JP) by ICAO Annex 10, Volume III. Every aircraft registered in Japan 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 1 distinct

Callsign Airline Flights Last seen
JA23PC - 5 2026-04-28

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-28 JA23PC - Apr 28, 04:45 UTCApr 28, 05:20 UTC35m
2026-04-19 JA23PC - Apr 19, 00:55 UTCApr 19, 01:15 UTC20m
2026-04-17 JA23PC - Apr 17, 01:20 UTCApr 17, 01:30 UTC10m
2026-04-17 JA23PC - Apr 17, 00:40 UTCApr 17, 01:15 UTC35m
2026-04-13 JA23PC - Apr 13, 04:40 UTCApr 13, 05:55 UTC1h 15m

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 JA23PC page for operator, model, and routing details .

Mode-S 84C0DA frequently asked

What is Mode-S code 84C0DA?
84C0DA is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA23PC.
Where is Mode-S 84C0DA registered?
Mode-S code 84C0DA is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 84C0DA broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 84C0DA, octal 41140332, decimal 8,700,122.
What flights does 84C0DA operate?
Mode-S 84C0DA has broadcast 1 distinct callsign, including JA23PC.