Apparatus

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sensors Mode-S transponder

841538

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA05XJ · AIRBUS A-350-900

Hex
841538
Octal
41012470
Decimal
8,656,184
Country
JP
Tail
JA05XJ
Type
A359
No current signal · last broadcast Jul 26, 14:05 UTC
Flights observed
482
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 14:05 UTC

Last known position

Most recent position reported by Mode-S 841538.

Country allocation

The ICAO 24-bit address 841538 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
JAL320 - 20 2026-07-19
JAL331 - 17 2026-07-19
JAL319 Japan Airlines 17 2026-07-19
JAL909 Japan Airlines 16 2026-07-26
JAL316 Japan Airlines 16 2026-07-20
JAL315 Japan Airlines 16 2026-07-20
JAL526 Japan Airlines 15 2026-07-26
JAL330 - 15 2026-07-20
JAL327 Japan Airlines 15 2026-07-20
JAL310 Japan Airlines 15 2026-07-25
JAL304 - 15 2026-07-19
JAL525 Japan Airlines 14 2026-07-26
JAL504 - 14 2026-07-15
JAL335 Japan Airlines 14 2026-07-25
JAL322 Japan Airlines 14 2026-07-25
JAL321 Japan Airlines 14 2026-07-25
JAL307 Japan Airlines 14 2026-07-24
JAL300 Japan Airlines 14 2026-07-25
JAL503 - 13 2026-07-14
JAL910 Japan Airlines 11 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL526 CTS → HND Jul 26, 12:35 UTCJul 26, 13:55 UTC1h 20m
2026-07-26 JAL525 HND → CTS Jul 26, 09:00 UTCJul 26, 10:10 UTC1h 10m
2026-07-26 JAL910 OKA → HND Jul 26, 05:25 UTCJul 26, 07:25 UTC2h 1m
2026-07-26 JAL909 HND → OKA Jul 26, 01:30 UTCJul 26, 03:20 UTC1h 50m
2026-07-25 JAL300 FUK → HND Jul 25, 22:25 UTCJul 25, 23:55 UTC1h 30m
2026-07-25 JAL335 HND → FUK Jul 25, 11:10 UTCJul 25, 12:20 UTC1h 10m
2026-07-25 JAL322 FUK → HND Jul 25, 08:25 UTCJul 25, 09:45 UTC1h 20m
2026-07-25 JAL321 HND → FUK Jul 25, 05:10 UTCJul 25, 06:25 UTC1h 15m
2026-07-25 JAL310 FUK → HND Jul 25, 02:25 UTCJul 25, 03:55 UTC1h 30m
2026-07-24 JAL307 HND → FUK Jul 24, 23:20 UTCJul 25, 00:20 UTC1h 0m
2026-07-24 JAL328 FUK → HND Jul 24, 11:25 UTCJul 24, 12:55 UTC1h 30m
2026-07-24 JAL325 HND → FUK Jul 24, 07:30 UTCJul 24, 08:35 UTC1h 5m
2026-07-24 JAL314 FUK → HND Jul 24, 04:40 UTCJul 24, 06:05 UTC1h 25m
2026-07-24 JAL313 HND → FUK Jul 24, 01:40 UTCJul 24, 03:05 UTC1h 25m
2026-07-23 JAL302 FUK → HND Jul 23, 22:50 UTCJul 24, 00:20 UTC1h 30m
2026-07-23 JAL333 HND → FUK Jul 23, 10:35 UTCJul 23, 11:35 UTC1h 0m
2026-07-23 JAL914 OKA → HND Jul 23, 07:00 UTCJul 23, 09:10 UTC2h 10m
2026-07-23 JAL915 HND → OKA Jul 23, 03:25 UTCJul 23, 05:30 UTC2h 5m
2026-07-23 JAL306 FUK → HND Jul 23, 00:40 UTCJul 23, 02:00 UTC1h 20m
2026-07-22 JAL303 HND → FUK Jul 22, 22:05 UTCJul 22, 23:05 UTC1h 0m
2026-07-22 JAL526 CTS → HND Jul 22, 11:40 UTCJul 22, 12:55 UTC1h 15m
2026-07-22 JAL910 OKA → HND Jul 22, 04:45 UTCJul 22, 05:00 UTC15m
2026-07-22 JAL909 HND → OKA Jul 22, 01:05 UTCJul 22, 03:05 UTC2h 0m
2026-07-21 JAL300 FUK → HND Jul 21, 22:15 UTCJul 21, 23:30 UTC1h 15m
2026-07-21 JAL335 HND → FUK Jul 21, 11:00 UTCJul 21, 12:20 UTC1h 20m
2026-07-21 JAL322 FUK → HND Jul 21, 08:10 UTCJul 21, 09:40 UTC1h 30m
2026-07-21 JAL321 HND → FUK Jul 21, 05:10 UTCJul 21, 06:15 UTC1h 5m
2026-07-21 JAL310 FUK → HND Jul 21, 02:20 UTCJul 21, 03:40 UTC1h 20m
2026-07-20 JAL307 - Jul 20, 23:20 UTCJul 21, 00:25 UTC1h 4m
2026-07-20 JAL330 - Jul 20, 11:30 UTCJul 20, 12:45 UTC1h 15m
2026-07-20 JAL327 HND → FUK Jul 20, 08:25 UTCJul 20, 09:40 UTC1h 15m
2026-07-20 JAL316 FUK → HND Jul 20, 05:30 UTCJul 20, 06:50 UTC1h 20m
2026-07-20 JAL315 HND → FUK Jul 20, 02:25 UTCJul 20, 03:30 UTC1h 5m
2026-07-19 JAL304 - Jul 19, 23:35 UTCJul 20, 00:55 UTC1h 20m
2026-07-19 JAL331 - Jul 19, 10:20 UTCJul 19, 11:20 UTC1h 0m
2026-07-19 JAL320 - Jul 19, 07:15 UTCJul 19, 08:45 UTC1h 30m
2026-07-19 JAL319 HND → FUK Jul 19, 04:25 UTCJul 19, 05:30 UTC1h 5m
2026-07-19 JAL308 FUK → HND Jul 19, 01:30 UTCJul 19, 02:50 UTC1h 20m
2026-07-18 JAL305 HND → FUK Jul 18, 22:30 UTCJul 18, 23:30 UTC1h 0m
2026-07-18 JAL328 - Jul 18, 10:25 UTCJul 18, 11:50 UTC1h 25m
2026-07-18 JAL325 HND → FUK Jul 18, 07:25 UTCJul 18, 08:30 UTC1h 5m
2026-07-18 JAL314 FUK → HND Jul 18, 04:25 UTCJul 18, 05:50 UTC1h 25m
2026-07-18 JAL313 - Jul 18, 01:30 UTCJul 18, 02:29 UTC1h 0m
2026-07-17 JAL302 - Jul 17, 22:40 UTCJul 18, 00:10 UTC1h 30m
2026-07-17 JAL333 - Jul 17, 11:00 UTCJul 17, 12:10 UTC1h 10m
2026-07-17 JAL914 - Jul 17, 07:25 UTCJul 17, 09:40 UTC2h 15m
2026-07-17 JAL915 - Jul 17, 03:59 UTCJul 17, 06:00 UTC2h 0m
2026-07-17 JAL306 - Jul 17, 00:35 UTCJul 17, 02:10 UTC1h 35m
2026-07-16 JAL303 - Jul 16, 21:45 UTCJul 16, 22:45 UTC1h 0m
2026-07-16 JAL330 - Jul 16, 11:25 UTCJul 16, 12:49 UTC1h 25m

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 JA05XJ page for operator, model, and routing details .

Mode-S 841538 frequently asked

What is Mode-S code 841538?
841538 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA05XJ.
Where is Mode-S 841538 registered?
Mode-S code 841538 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 841538 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 841538, octal 41012470, decimal 8,656,184.
What flights does 841538 operate?
Mode-S 841538 has broadcast 20 distinct callsigns, including JAL320, JAL331, JAL319, JAL909, JAL316.