sensors Mode-S transponder

872FE4

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA925A · BOEING 787-9 Dreamliner

Hex
872FE4
Octal
41627744
Decimal
8,859,620
Country
JP
Tail
JA925A
Type
B789
No current signal · last broadcast 12h ago
Flights observed
6
Distinct callsigns
2
Country
JP
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 872FE4.

Country allocation

The ICAO 24-bit address 872FE4 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 2 distinct

Callsign Airline Flights Last seen
ANA117 All Nippon Airways 4 2026-04-13
ANA837 All Nippon Airways 2 2026-04-14

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 ANA837 HND → DEL Apr 14, 09:10 UTCApr 14, 11:05 UTC1h 55m
2026-04-14 ANA837 HND → DEL Apr 14, 08:35 UTCApr 14, 09:05 UTC30m
2026-04-13 ANA117 SEA → HND Apr 13, 08:40 UTCApr 13, 09:40 UTC1h 0m
2026-04-13 ANA117 SEA → HND Apr 13, 03:55 UTCApr 13, 04:10 UTC15m
2026-04-13 ANA117 SEA → HND Apr 13, 00:20 UTCApr 13, 04:10 UTC3h 50m
2026-04-12 ANA117 SEA → HND Apr 12, 23:55 UTCApr 13, 03:50 UTC3h 55m

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 JA925A page for operator, model, and routing details .

Mode-S 872FE4 frequently asked

What is Mode-S code 872FE4?
872FE4 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA925A.
Where is Mode-S 872FE4 registered?
Mode-S code 872FE4 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 872FE4 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 872FE4, octal 41627744, decimal 8,859,620.
What flights does 872FE4 operate?
Mode-S 872FE4 has broadcast 2 distinct callsigns, including ANA117, ANA837.