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sensors Mode-S transponder

842388

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA09XJ · AIRBUS A-350-900

Hex
842388
Octal
41021610
Decimal
8,659,848
Country
JP
Tail
JA09XJ
Type
A359
No current signal · last broadcast Jul 26, 20:10 UTC
Flights observed
369
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 20:10 UTC

Last known position

Most recent position reported by Mode-S 842388.

Country allocation

The ICAO 24-bit address 842388 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 20 distinct

Callsign Airline Flights Last seen
JAL504 - 12 2026-07-02
JAL503 Japan Airlines 12 2026-07-01
JAL319 - 12 2026-07-02
JAL307 Japan Airlines 12 2026-06-25
JAL909 - 11 2026-06-27
JAL526 - 11 2026-06-27
JAL525 - 11 2026-06-27
JAL331 - 11 2026-07-02
JAL322 - 11 2026-06-26
JAL321 - 11 2026-06-26
JAL320 - 11 2026-07-02
JAL316 - 11 2026-07-03
JAL315 - 11 2026-07-03
JAL310 - 11 2026-06-22
JAL304 Japan Airlines 11 2026-07-02
JAL508 - 10 2026-07-06
JAL507 - 10 2026-07-06
JAL335 - 10 2026-06-26
JAL300 - 10 2026-06-26
JAL326 - 8 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL8152 - Jul 26, 17:00 UTCJul 26, 20:00 UTC3h 0m
2026-07-06 JAL8151 - Jul 6, 18:00 UTCJul 6, 19:35 UTC1h 35m
2026-07-06 JAL326 - Jul 6, 09:30 UTCJul 6, 10:45 UTC1h 15m
2026-07-06 JAL323 - Jul 6, 06:45 UTCJul 6, 07:50 UTC1h 5m
2026-07-06 JAL508 - Jul 6, 02:50 UTCJul 6, 04:00 UTC1h 10m
2026-07-06 JAL507 - Jul 6, 00:15 UTCJul 6, 01:35 UTC1h 20m
2026-07-05 JAL508 - Jul 5, 02:45 UTCJul 5, 04:00 UTC1h 15m
2026-07-05 JAL507 - Jul 5, 00:10 UTCJul 5, 01:35 UTC1h 25m
2026-07-04 JAL326 - Jul 4, 09:35 UTCJul 4, 10:55 UTC1h 20m
2026-07-04 JAL323 - Jul 4, 06:45 UTCJul 4, 07:50 UTC1h 5m
2026-07-04 JAL508 - Jul 4, 02:55 UTCJul 4, 04:05 UTC1h 10m
2026-07-04 JAL507 - Jul 4, 00:30 UTCJul 4, 01:35 UTC1h 5m
2026-07-03 JAL330 - Jul 3, 11:20 UTCJul 3, 12:30 UTC1h 10m
2026-07-03 JAL327 - Jul 3, 08:25 UTCJul 3, 09:35 UTC1h 10m
2026-07-03 JAL316 - Jul 3, 05:25 UTCJul 3, 06:30 UTC1h 5m
2026-07-03 JAL315 - Jul 3, 02:25 UTCJul 3, 03:35 UTC1h 10m
2026-07-02 JAL304 FUK → HND Jul 2, 23:30 UTCJul 3, 00:40 UTC1h 10m
2026-07-02 JAL331 - Jul 2, 10:10 UTCJul 2, 11:20 UTC1h 10m
2026-07-02 JAL320 - Jul 2, 07:30 UTCJul 2, 08:45 UTC1h 15m
2026-07-02 JAL319 - Jul 2, 04:20 UTCJul 2, 05:30 UTC1h 10m
2026-07-02 JAL504 - Jul 2, 01:05 UTCJul 2, 02:25 UTC1h 20m
2026-07-01 JAL503 HND → CTS Jul 1, 22:45 UTCJul 1, 23:55 UTC1h 10m
2026-07-01 JAL328 - Jul 1, 10:20 UTCJul 1, 11:40 UTC1h 20m
2026-07-01 JAL325 - Jul 1, 07:20 UTCJul 1, 08:30 UTC1h 10m
2026-07-01 JAL314 - Jul 1, 04:30 UTCJul 1, 05:55 UTC1h 25m
2026-07-01 JAL313 - Jul 1, 01:20 UTCJul 1, 02:25 UTC1h 5m
2026-06-30 JAL302 FUK → HND Jun 30, 22:55 UTCJul 1, 00:10 UTC1h 15m
2026-06-30 JAL333 - Jun 30, 11:10 UTCJun 30, 12:10 UTC1h 0m
2026-06-30 JAL915 HND → HND Jun 30, 04:00 UTCJun 30, 10:05 UTC6h 5m
2026-06-30 JAL306 - Jun 30, 00:45 UTCJun 30, 01:50 UTC1h 5m
2026-06-29 JAL303 - Jun 29, 21:39 UTCJun 29, 22:49 UTC1h 10m
2026-06-29 JAL332 - Jun 29, 12:20 UTCJun 29, 13:34 UTC1h 15m
2026-06-29 JAL329 - Jun 29, 09:25 UTCJun 29, 10:34 UTC1h 10m
2026-06-29 JAL514 - Jun 29, 06:34 UTCJun 29, 07:55 UTC1h 20m
2026-06-29 JAL515 HND → CTS Jun 29, 04:09 UTCJun 29, 05:20 UTC1h 10m
2026-06-29 JAL504 - Jun 29, 01:05 UTCJun 29, 02:20 UTC1h 15m
2026-06-28 JAL503 HND → CTS Jun 28, 22:34 UTCJun 28, 23:44 UTC1h 10m
2026-06-28 JAL921 - Jun 28, 07:25 UTCJun 28, 12:50 UTC5h 25m
2026-06-27 JAL905 HND → OKA Jun 27, 23:29 UTCJun 28, 05:40 UTC6h 10m
2026-06-27 JAL526 - Jun 27, 11:39 UTCJun 27, 13:00 UTC1h 20m
2026-06-27 JAL525 HND → CTS Jun 27, 09:15 UTCJun 27, 10:19 UTC1h 5m
2026-06-27 JAL909 HND → HND Jun 27, 01:24 UTCJun 27, 07:19 UTC5h 55m
2026-06-26 JAL300 - Jun 26, 22:19 UTCJun 26, 23:44 UTC1h 25m
2026-06-26 JAL335 - Jun 26, 11:30 UTCJun 26, 12:39 UTC1h 10m
2026-06-26 JAL322 - Jun 26, 08:34 UTCJun 26, 09:59 UTC1h 25m
2026-06-26 JAL321 - Jun 26, 05:50 UTCJun 26, 07:00 UTC1h 10m
2026-06-26 JL310 - Jun 26, 02:30 UTCJun 26, 04:00 UTC1h 30m
2026-06-25 JAL307 HND → FUK Jun 25, 23:19 UTCJun 26, 00:30 UTC1h 10m
2026-06-25 JAL524 - Jun 25, 10:35 UTCJun 25, 11:54 UTC1h 20m
2026-06-25 JAL523 - Jun 25, 08:14 UTCJun 25, 09:25 UTC1h 10m

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 JA09XJ page for operator, model, and routing details .

Mode-S 842388 frequently asked

What is Mode-S code 842388?
842388 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA09XJ.
Where is Mode-S 842388 registered?
Mode-S code 842388 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 842388 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 842388, octal 41021610, decimal 8,659,848.
What flights does 842388 operate?
Mode-S 842388 has broadcast 20 distinct callsigns, including JAL504, JAL503, JAL319, JAL307, JAL909.