Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

851230

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA319J · BOEING 737-800

Hex
851230
Octal
41211060
Decimal
8,720,944
Country
JP
Tail
JA319J
Type
B738
No current signal · last broadcast 7h ago
Flights observed
263
Distinct callsigns
20
Country
JP
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 851230.

Country allocation

The ICAO 24-bit address 851230 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
JAL562 Japan Airlines 5 2026-05-09
JAL476 Japan Airlines 5 2026-05-21
JAL674 Japan Airlines 4 2026-05-21
JAL669 Japan Airlines 4 2026-05-21
JAL565 Japan Airlines 4 2026-05-08
JAL482 Japan Airlines 4 2026-05-24
JAL481 Japan Airlines 4 2026-05-24
JAL475 Japan Airlines 4 2026-05-20
JAL440 Japan Airlines 4 2026-05-09
JAL436 Japan Airlines 4 2026-05-21
JAL435 Japan Airlines 4 2026-05-21
JAL3009 Japan Airlines 4 2026-06-01
JAL2465 Japan Airlines 4 2026-06-01
JAL242 Japan Airlines 4 2026-05-25
JAL239 Japan Airlines 4 2026-05-25
JAL134 Japan Airlines 4 2026-05-24
JAL131 Japan Airlines 4 2026-05-24
JAL687 Japan Airlines 3 2026-04-29
JAL648 Japan Airlines 3 2026-05-26
JAL647 Japan Airlines 3 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 JAL3118 CTS → NGO Jun 2, 11:15 UTCJun 2, 12:30 UTC1h 15m
2026-06-02 JAL3117 NGO → CTS Jun 2, 09:00 UTCJun 2, 10:25 UTC1h 25m
2026-06-02 JAL3114 CTS → NGO Jun 2, 06:30 UTCJun 2, 07:50 UTC1h 20m
2026-06-02 JAL3107 NGO → CTS Jun 2, 04:00 UTCJun 2, 05:25 UTC1h 25m
2026-06-02 JAL3106 CTS → NGO Jun 2, 01:30 UTCJun 2, 02:50 UTC1h 20m
2026-06-01 JAL2001 ITM → CTS Jun 1, 22:50 UTCJun 2, 00:25 UTC1h 35m
2026-06-01 JAL3009 NRT → ITM Jun 1, 10:05 UTCJun 1, 11:00 UTC55m
2026-06-01 JAL3006 ITM → NRT Jun 1, 05:50 UTCJun 1, 06:50 UTC1h 0m
2026-06-01 JAL2464 ASJ → ITM Jun 1, 04:15 UTCJun 1, 04:35 UTC20m
2026-06-01 JAL2465 ITM → ASJ Jun 1, 00:50 UTCJun 1, 01:30 UTC40m
2026-05-31 JAL3009 NRT → ITM May 31, 09:55 UTCMay 31, 10:55 UTC1h 0m
2026-05-31 JAL2465 ITM → ASJ May 31, 00:50 UTCMay 31, 01:11 UTC21m
2026-05-30 JAL2016 CTS → ITM May 30, 09:00 UTCMay 30, 10:55 UTC1h 55m
2026-05-30 JAL2505 KIX → CTS May 30, 06:30 UTCMay 30, 08:00 UTC1h 30m
2026-05-30 JAL2504 CTS → KIX May 30, 03:10 UTCMay 30, 05:10 UTC2h 0m
2026-05-30 JAL2501 KIX → CTS May 30, 00:35 UTCMay 30, 01:55 UTC1h 20m
2026-05-29 JAL221 HND → KIX May 29, 22:35 UTCMay 29, 23:30 UTC55m
2026-05-29 JAL228 KIX → HND May 29, 12:25 UTCMay 29, 13:15 UTC50m
2026-05-29 JAL2506 CTS → KIX May 29, 09:15 UTCMay 29, 11:15 UTC2h 0m
2026-05-29 JAL2009 ITM → CTS May 29, 06:30 UTCMay 29, 07:45 UTC1h 15m
2026-05-29 JAL2004 CTS → ITM May 29, 03:20 UTCMay 29, 05:05 UTC1h 45m
2026-05-29 JAL509 HND → CTS May 29, 01:20 UTCMay 29, 02:25 UTC1h 5m
2026-05-28 JAL140 AOJ → HND May 28, 22:55 UTCMay 28, 23:50 UTC55m
2026-05-28 JAL151 HND → AOJ May 28, 11:10 UTCMay 28, 12:05 UTC55m
2026-05-28 JAL462 TKS → HND May 28, 08:55 UTCMay 28, 10:10 UTC1h 15m
2026-05-28 JAL461 HND → TKS May 28, 07:05 UTCMay 28, 07:55 UTC50m
2026-05-28 JAL572 OBO → HND May 28, 04:25 UTCMay 28, 05:45 UTC1h 20m
2026-05-28 JAL575 HND → OBO May 28, 02:20 UTCMay 28, 03:20 UTC1h 0m
2026-05-28 JAL624 KMJ → HND May 28, 00:05 UTCMay 28, 01:10 UTC1h 5m
2026-05-27 JAL623 HND → KMJ May 27, 21:35 UTCMay 27, 22:55 UTC1h 20m
2026-05-26 JAL566 MMB → HND May 26, 10:54 UTCMay 26, 12:30 UTC1h 35m
2026-05-26 JAL569 HND → MMB May 26, 08:45 UTCMay 26, 10:10 UTC1h 25m
2026-05-26 JAL648 KOJ → HND May 26, 06:20 UTCMay 26, 07:19 UTC1h 0m
2026-05-26 JAL647 HND → KOJ May 26, 03:19 UTCMay 26, 04:24 UTC1h 5m
2026-05-26 JAL492 KCZ → HND May 26, 01:00 UTCMay 26, 01:49 UTC50m
2026-05-25 JAL491 HND → KCZ May 25, 22:49 UTCMay 25, 23:30 UTC40m
2026-05-25 JAL242 OKJ → HND May 25, 12:35 UTCMay 25, 13:35 UTC1h 0m
2026-05-25 JAL239 HND → OKJ May 25, 10:50 UTCMay 25, 11:40 UTC50m
2026-05-25 JAL659 HND → ASJ May 25, 02:55 UTCMay 25, 08:40 UTC5h 45m
2026-05-24 JAL641 HND → KOJ May 24, 21:40 UTCMay 24, 21:45 UTC5m
2026-05-24 JAL134 ITM → HND May 24, 10:50 UTCMay 24, 11:40 UTC50m
2026-05-24 JAL131 HND → ITM May 24, 08:55 UTCMay 24, 09:35 UTC40m
2026-05-24 JAL482 TAK → HND May 24, 06:25 UTCMay 24, 07:20 UTC55m
2026-05-24 JAL481 HND → TAK May 24, 04:20 UTCMay 24, 05:15 UTC55m
2026-05-24 JAL186 KIX → HND May 24, 02:25 UTCMay 24, 03:05 UTC40m
2026-05-24 JAL185 HND → KMQ May 24, 00:45 UTCMay 24, 01:05 UTC20m
2026-05-23 JAL232 OKJ → HND May 23, 22:25 UTCMay 23, 23:30 UTC1h 5m
2026-05-23 JAL241 HND → OKJ May 23, 11:05 UTCMay 23, 11:55 UTC50m
2026-05-23 JAL240 OKJ → HND May 23, 08:45 UTCMay 23, 09:35 UTC50m
2026-05-23 JAL237 HND → OKJ May 23, 05:45 UTCMay 23, 06:40 UTC55m

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 JA319J page for operator, model, and routing details .

Mode-S 851230 frequently asked

What is Mode-S code 851230?
851230 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA319J.
Where is Mode-S 851230 registered?
Mode-S code 851230 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 851230 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 851230, octal 41211060, decimal 8,720,944.
What flights does 851230 operate?
Mode-S 851230 has broadcast 20 distinct callsigns, including JAL562, JAL476, JAL674, JAL669, JAL565.