sensors Mode-S transponder

87CDE5

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to 58-1219 · KAWASAKI C-2

Hex
87CDE5
Octal
41746745
Decimal
8,900,069
Country
JP
Tail
58-1219
Type
KC2
No current signal · last broadcast 23h ago
Flights observed
5
Distinct callsigns
1
Country
JP
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 87CDE5.

Country allocation

The ICAO 24-bit address 87CDE5 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
FENIXR2 - 5 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 FENIXR2 - Apr 14, 06:00 UTCApr 14, 06:15 UTC15m
2026-04-13 FENIXR2 - Apr 13, 05:10 UTCApr 13, 07:10 UTC2h 0m
2026-04-13 FENIXR2 - Apr 13, 04:20 UTCApr 13, 04:35 UTC15m
2026-04-13 FENIXR2 - Apr 13, 00:20 UTCApr 13, 01:30 UTC1h 10m
2026-04-12 FENIXR2 - Apr 12, 23:55 UTCApr 13, 01:30 UTC1h 35m

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 58-1219 page for operator, model, and routing details .

Mode-S 87CDE5 frequently asked

What is Mode-S code 87CDE5?
87CDE5 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to 58-1219.
Where is Mode-S 87CDE5 registered?
Mode-S code 87CDE5 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 87CDE5 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 87CDE5, octal 41746745, decimal 8,900,069.
What flights does 87CDE5 operate?
Mode-S 87CDE5 has broadcast 1 distinct callsign, including FENIXR2.