Apparatus

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sensors Mode-S transponder

851492

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA320J · BOEING 737-800

Hex
851492
Octal
41212222
Decimal
8,721,554
Country
JP
Tail
JA320J
Type
B738
No current signal · last broadcast 1h ago
Flights observed
317
Distinct callsigns
20
Country
JP
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 851492.

Country allocation

The ICAO 24-bit address 851492 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
JAL809 - 24 2026-06-20
JAL20 - 21 2026-07-09
JAL802 - 18 2026-06-21
JAL159 - 17 2026-07-09
JAL153 Japan Airlines 13 2026-07-03
JAL25 - 12 2026-07-08
JAL89 - 11 2026-07-07
JAL8671 - 11 2026-06-28
JAL3087 - 11 2026-07-14
JAL3084 - 11 2026-07-14
JAL3083 - 11 2026-07-14
JAL3082 - 11 2026-07-13
JAL201 - 11 2026-07-13
JAL158 - 11 2026-06-26
JAL208 - 10 2026-07-12
JAL152 - 7 2026-07-04
JAL8670 - 6 2026-06-28
JAL841 - 6 2026-07-13
JAL374 - 6 2026-07-01
JAL373 - 6 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JAL3087 - Jul 14, 10:20 UTCJul 14, 10:30 UTC10m
2026-07-14 JAL3084 - Jul 14, 05:50 UTCJul 14, 06:45 UTC55m
2026-07-14 JAL3083 - Jul 14, 01:50 UTCJul 14, 02:15 UTC25m
2026-07-13 JAL3082 - Jul 13, 23:35 UTCJul 14, 00:25 UTC50m
2026-07-13 JAL841 - Jul 13, 02:20 UTCJul 13, 08:40 UTC6h 20m
2026-07-13 JAL201 - Jul 13, 00:01 UTCJul 13, 00:25 UTC25m
2026-07-12 JAL208 - Jul 12, 12:10 UTCJul 12, 12:55 UTC45m
2026-07-12 JAL3087 - Jul 12, 10:25 UTCJul 12, 10:50 UTC25m
2026-07-11 JAL3084 - Jul 11, 06:05 UTCJul 11, 06:55 UTC50m
2026-07-11 JAL3083 - Jul 11, 01:55 UTCJul 11, 02:30 UTC35m
2026-07-10 JAL3082 - Jul 10, 23:35 UTCJul 11, 00:15 UTC40m
2026-07-10 JAL841 - Jul 10, 02:05 UTCJul 10, 08:35 UTC6h 30m
2026-07-09 JAL201 - Jul 9, 23:45 UTCJul 10, 00:15 UTC30m
2026-07-09 JAL159 HND → HND Jul 9, 08:30 UTCJul 9, 11:25 UTC2h 55m
2026-07-09 JAL20 - Jul 9, 01:40 UTCJul 9, 03:35 UTC1h 55m
2026-07-09 JAL20 - Jul 9, 00:35 UTCJul 9, 00:45 UTC10m
2026-07-08 JAL25 - Jul 8, 08:15 UTCJul 8, 10:10 UTC1h 55m
2026-07-07 JAL89 - Jul 7, 08:45 UTCJul 8, 03:45 UTC19h 0m
2026-07-07 JAL20 - Jul 7, 01:40 UTCJul 7, 03:30 UTC1h 50m
2026-07-07 JAL20 - Jul 7, 00:35 UTCJul 7, 00:45 UTC10m
2026-07-06 JAL25 - Jul 6, 08:20 UTCJul 6, 10:20 UTC2h 0m
2026-07-05 JAL89 HND → HND Jul 5, 08:40 UTCJul 6, 03:40 UTC19h 0m
2026-07-04 JAL89 HND → HND Jul 4, 08:45 UTCJul 5, 03:50 UTC19h 5m
2026-07-04 JAL152 - Jul 4, 01:45 UTCJul 4, 02:25 UTC40m
2026-07-03 JAL153 HND → MSJ Jul 3, 23:25 UTCJul 3, 23:55 UTC30m
2026-07-03 JAL159 HND → HND Jul 3, 08:30 UTCJul 3, 11:30 UTC3h 0m
2026-07-02 JAL89 - Jul 2, 08:45 UTCJul 3, 04:05 UTC19h 20m
2026-07-02 JAL20 - Jul 2, 01:35 UTCJul 2, 03:20 UTC1h 45m
2026-07-02 JAL20 - Jul 2, 00:35 UTCJul 2, 00:45 UTC10m
2026-07-01 JAL25 - Jul 1, 08:20 UTCJul 1, 10:25 UTC2h 5m
2026-07-01 JAL374 - Jul 1, 02:05 UTCJul 1, 03:20 UTC1h 15m
2026-06-30 JAL373 - Jun 30, 23:40 UTCJul 1, 00:50 UTC1h 10m
2026-06-30 JAL159 HND → HND Jun 30, 08:45 UTCJun 30, 11:40 UTC2h 55m
2026-06-30 JAL460 - Jun 30, 06:00 UTCJun 30, 06:50 UTC50m
2026-06-30 JAL459 - Jun 30, 04:05 UTCJun 30, 05:00 UTC55m
2026-06-30 JAL374 - Jun 30, 01:50 UTCJun 30, 02:55 UTC1h 5m
2026-06-29 JAL373 - Jun 29, 23:44 UTCJun 30, 00:49 UTC1h 5m
2026-06-29 JAL208 - Jun 29, 12:20 UTCJun 29, 13:00 UTC40m
2026-06-29 JAL3087 - Jun 29, 10:20 UTCJun 29, 10:55 UTC35m
2026-06-29 JAL3084 - Jun 29, 05:54 UTCJun 29, 06:40 UTC45m
2026-06-29 JAL3083 - Jun 29, 01:50 UTCJun 29, 02:25 UTC35m
2026-06-28 JAL3082 - Jun 28, 23:34 UTCJun 29, 00:24 UTC50m
2026-06-28 JAL8670 - Jun 28, 06:24 UTCJun 28, 08:39 UTC2h 15m
2026-06-28 JAL8671 - Jun 28, 04:59 UTCJun 28, 05:15 UTC15m
2026-06-28 JAL8671 - Jun 28, 02:29 UTCJun 28, 03:19 UTC50m
2026-06-27 JAL201 HND → NGO Jun 27, 23:34 UTCJun 28, 00:04 UTC30m
2026-06-26 JAL158 - Jun 26, 11:05 UTCJun 26, 11:40 UTC35m
2026-06-26 JAL159 - Jun 26, 08:45 UTCJun 26, 09:20 UTC35m
2026-06-26 JAL152 - Jun 26, 01:39 UTCJun 26, 02:50 UTC1h 10m
2026-06-25 JAL153 HND → MSJ Jun 25, 23:30 UTCJun 26, 00:05 UTC35m

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 JA320J page for operator, model, and routing details .

Mode-S 851492 frequently asked

What is Mode-S code 851492?
851492 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA320J.
Where is Mode-S 851492 registered?
Mode-S code 851492 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 851492 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 851492, octal 41212222, decimal 8,721,554.
What flights does 851492 operate?
Mode-S 851492 has broadcast 20 distinct callsigns, including JAL809, JAL20, JAL802, JAL159, JAL153.