Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

841520

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA05WJ · AIRBUS A-350-1000

Hex
841520
Octal
41012440
Decimal
8,656,160
Country
JP
Tail
JA05WJ
Type
A35K
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
120
Distinct callsigns
16
Country
JP
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S 841520.

Country allocation

The ICAO 24-bit address 841520 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 16 distinct

Callsign Airline Flights Last seen
JAL6 - 12 2026-07-22
JAL44 - 12 2026-07-10
JAL5 Japan Airlines 11 2026-07-22
JAL43 - 11 2026-07-10
JAL15 Japan Airlines 11 2026-07-25
JAL3 Japan Airlines 10 2026-06-01
JAL16 Japan Airlines 10 2026-07-25
JAL12 Japan Airlines 9 2026-07-24
JAL11 Japan Airlines 9 2026-07-24
JAL46 - 8 2026-06-16
JAL4 Japan Airlines 7 2026-07-26
JAL45 Japan Airlines 6 2026-06-16
JAL8158 - 1 2026-07-09
JAL8155 - 1 2026-06-18
JAL46D Japan Airlines 1 2026-07-19
JAL45D Japan Airlines 1 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL4 HND → JFK Jul 26, 11:05 UTCJul 26, 22:00 UTC10h 55m
2026-07-25 JAL15 LAX → HND Jul 25, 21:40 UTCJul 26, 08:15 UTC10h 36m
2026-07-25 JAL16 HND → LAX Jul 25, 09:05 UTCJul 25, 19:05 UTC10h 0m
2026-07-24 JAL11 DFW → HND Jul 24, 17:35 UTCJul 25, 06:05 UTC12h 30m
2026-07-24 JAL12 HND → DFW Jul 24, 02:35 UTCJul 24, 13:45 UTC11h 10m
2026-07-22 JAL5 JFK → HND Jul 22, 18:05 UTCJul 23, 07:15 UTC13h 10m
2026-07-22 JAL6 HND → JFK Jul 22, 02:45 UTCJul 22, 15:05 UTC12h 20m
2026-07-20 JAL11 DFW → HND Jul 20, 22:25 UTCJul 21, 11:15 UTC12h 50m
2026-07-20 JAL12 HND → DFW Jul 20, 07:20 UTCJul 20, 18:55 UTC11h 35m
2026-07-19 JAL46D CDG → HND Jul 19, 15:45 UTCJul 20, 04:05 UTC12h 20m
2026-07-18 JAL45D HND → CDG Jul 18, 22:30 UTCJul 19, 12:05 UTC13h 35m
2026-07-16 JAL15 LAX → HND Jul 16, 22:05 UTCJul 17, 08:25 UTC10h 20m
2026-07-16 JAL16 HND → LAX Jul 16, 09:25 UTCJul 16, 19:30 UTC10h 5m
2026-07-15 JAL5 JFK → HND Jul 15, 17:55 UTCJul 16, 07:05 UTC13h 10m
2026-07-15 JAL6 HND → JFK Jul 15, 02:40 UTCJul 15, 14:40 UTC12h 0m
2026-07-13 JAL15 - Jul 13, 22:50 UTCJul 14, 09:05 UTC10h 15m
2026-07-13 JAL16 HND → LAX Jul 13, 10:10 UTCJul 13, 20:10 UTC10h 0m
2026-07-12 JAL11 DFW → HND Jul 12, 17:30 UTCJul 13, 06:01 UTC12h 30m
2026-07-12 JAL12 HND → DFW Jul 12, 02:15 UTCJul 12, 13:30 UTC11h 15m
2026-07-10 JAL44 - Jul 10, 19:20 UTCJul 11, 08:01 UTC12h 41m
2026-07-10 JAL43 HND → LHR Jul 10, 02:40 UTCJul 10, 16:20 UTC13h 40m
2026-07-09 JAL8158 - Jul 9, 12:05 UTCJul 9, 15:05 UTC3h 0m
2026-06-18 JAL8155 - Jun 18, 20:10 UTCJun 18, 23:35 UTC3h 25m
2026-06-18 JAL15 - Jun 18, 08:15 UTCJun 18, 09:00 UTC45m
2026-06-17 JAL15 - Jun 17, 22:45 UTCJun 17, 23:45 UTC1h 0m
2026-06-17 JAL16 HND → LAX Jun 17, 10:45 UTCJun 17, 20:15 UTC9h 30m
2026-06-16 JAL46 - Jun 16, 19:05 UTCJun 17, 08:10 UTC13h 6m
2026-06-16 JAL45 HND → CDG Jun 16, 01:55 UTCJun 16, 15:20 UTC13h 25m
2026-06-14 JAL5 JFK → HND Jun 14, 18:10 UTCJun 15, 07:40 UTC13h 30m
2026-06-14 JAL6 HND → JFK Jun 14, 09:50 UTCJun 14, 14:30 UTC4h 40m
2026-06-14 JAL6 HND → JFK Jun 14, 02:30 UTCJun 14, 03:10 UTC40m
2026-06-12 JAL5 JFK → HND Jun 12, 18:01 UTCJun 13, 06:40 UTC12h 39m
2026-06-12 JAL6 HND → JFK Jun 12, 02:35 UTCJun 12, 14:40 UTC12h 5m
2026-06-10 JAL5 JFK → HND Jun 10, 19:00 UTCJun 11, 08:15 UTC13h 15m
2026-06-10 JAL6 HND → JFK Jun 10, 02:30 UTCJun 10, 14:30 UTC12h 0m
2026-06-07 JAL44 LHR → HND Jun 7, 18:40 UTCJun 8, 07:15 UTC12h 35m
2026-06-07 JAL43 HND → LHR Jun 7, 01:45 UTCJun 7, 15:30 UTC13h 45m
2026-06-05 JAL15 LAX → HND Jun 5, 21:30 UTCJun 6, 08:30 UTC11h 0m
2026-06-05 JAL16 HND → LAX Jun 5, 09:00 UTCJun 5, 18:05 UTC9h 5m
2026-06-04 JAL11 DFW → HND Jun 4, 17:30 UTCJun 5, 05:35 UTC12h 5m
2026-06-04 JAL12 HND → DFW Jun 4, 02:35 UTCJun 4, 13:35 UTC11h 0m
2026-06-02 JAL5 JFK → HND Jun 2, 18:35 UTCJun 3, 07:35 UTC13h 0m
2026-06-02 JAL6 HND → JFK Jun 2, 02:30 UTCJun 2, 15:10 UTC12h 40m
2026-06-01 JAL3 JFK → HND Jun 1, 05:55 UTCJun 1, 19:00 UTC13h 5m
2026-05-31 JAL4 HND → JFK May 31, 10:55 UTCMay 31, 23:15 UTC12h 20m
2026-05-30 JAL44 LHR → HND May 30, 19:35 UTCMay 30, 23:55 UTC4h 20m
2026-05-30 JAL43 HND → LHR May 30, 01:25 UTCMay 30, 14:35 UTC13h 10m
2026-05-29 JAL3 JFK → HND May 29, 06:00 UTCMay 29, 19:30 UTC13h 30m
2026-05-28 JAL4 HND → JFK May 28, 11:00 UTCMay 28, 23:00 UTC12h 0m
2026-05-27 JAL46 CDG → HND May 27, 18:55 UTCMay 28, 07:50 UTC12h 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 JA05WJ page for operator, model, and routing details .

Mode-S 841520 frequently asked

What is Mode-S code 841520?
841520 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA05WJ.
Where is Mode-S 841520 registered?
Mode-S code 841520 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 841520 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 841520, octal 41012440, decimal 8,656,160.
What flights does 841520 operate?
Mode-S 841520 has broadcast 16 distinct callsigns, including JAL6, JAL44, JAL5, JAL43, JAL15.