sensors Mode-S transponder

8406D0

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA01WJ · AIRBUS A-350-1000

Hex
8406D0
Octal
41003320
Decimal
8,652,496
Country
JP
Tail
JA01WJ
Type
A35K
No current signal · last broadcast 17h ago
Flights observed
9
Distinct callsigns
2
Country
JP
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 8406D0.

Country allocation

The ICAO 24-bit address 8406D0 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
JAL6 Japan Airlines 6 2026-04-13
JAL5 Japan Airlines 3 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 JAL5 JFK → HND Apr 14, 06:10 UTCApr 14, 07:05 UTC55m
2026-04-13 JAL5 JFK → HND Apr 13, 21:00 UTCApr 13, 21:20 UTC20m
2026-04-13 JAL5 JFK → HND Apr 13, 17:40 UTCApr 13, 18:55 UTC1h 15m
2026-04-13 JAL6 HND → JFK Apr 13, 12:20 UTCApr 13, 14:30 UTC2h 10m
2026-04-13 JAL6 HND → JFK Apr 13, 11:55 UTCApr 13, 14:30 UTC2h 35m
2026-04-13 JAL6 HND → JFK Apr 13, 08:20 UTCApr 13, 12:15 UTC3h 55m
2026-04-13 JAL6 HND → JFK Apr 13, 07:55 UTCApr 13, 11:50 UTC3h 55m
2026-04-13 JAL6 HND → JFK Apr 13, 06:55 UTCApr 13, 08:15 UTC1h 20m
2026-04-13 JAL6 HND → JFK Apr 13, 02:35 UTCApr 13, 03:15 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 JA01WJ page for operator, model, and routing details .

Mode-S 8406D0 frequently asked

What is Mode-S code 8406D0?
8406D0 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA01WJ.
Where is Mode-S 8406D0 registered?
Mode-S code 8406D0 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8406D0 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8406D0, octal 41003320, decimal 8,652,496.
What flights does 8406D0 operate?
Mode-S 8406D0 has broadcast 2 distinct callsigns, including JAL6, JAL5.