Apparatus

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sensors Mode-S transponder

8418B4

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA06WJ · AIRBUS A-350-1000

Hex
8418B4
Octal
41014264
Decimal
8,657,076
Country
JP
Tail
JA06WJ
Type
A35K
Broadcasting now · callsign JAL45 · 27,350 ft
Flights observed
6
Distinct callsigns
3
Country
JP
Last broadcast
18h ago

Current position

8418B4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 8418B4 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 3 distinct

Callsign Airline Flights Last seen
JAL16 Japan Airlines 2 2026-04-13
JAL15 Japan Airlines 2 2026-04-14
JAL11 Japan Airlines 2 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 JAL15 LAX → HND Apr 14, 07:25 UTCApr 14, 08:20 UTC55m
2026-04-13 JAL15 LAX → HND Apr 13, 21:10 UTCApr 13, 22:15 UTC1h 5m
2026-04-13 JAL16 HND → LAX Apr 13, 17:00 UTCApr 13, 18:40 UTC1h 40m
2026-04-13 JAL16 HND → LAX Apr 13, 09:20 UTCApr 13, 10:00 UTC40m
2026-04-13 JAL11 DFW → HND Apr 13, 05:30 UTCApr 13, 06:25 UTC55m
2026-04-12 JAL11 DFW → HND Apr 12, 17:15 UTCApr 12, 20:15 UTC3h 0m

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 JA06WJ page for operator, model, and routing details .

Mode-S 8418B4 frequently asked

What is Mode-S code 8418B4?
8418B4 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA06WJ.
Where is Mode-S 8418B4 registered?
Mode-S code 8418B4 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8418B4 broadcasting right now?
Yes. Mode-S 8418B4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8418B4, octal 41014264, decimal 8,657,076.
What flights does 8418B4 operate?
Mode-S 8418B4 has broadcast 3 distinct callsigns, including JAL16, JAL15, JAL11.