Apparatus

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sensors Mode-S transponder

851580

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA327J · BOEING 737-800

Hex
851580
Octal
41212600
Decimal
8,721,792
Country
JP
Tail
JA327J
Type
B738
Broadcasting now · callsign JAL672 · 33,000 ft
Flights observed
598
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 14:15 UTC

Current position

851580 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 851580 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
JAL698 - 8 2026-07-07
JAL695 - 8 2026-07-07
JAL669 - 7 2026-07-20
JAL661 - 6 2026-07-10
JAL630 - 6 2026-07-07
JAL629 - 6 2026-07-07
JAL569 Japan Airlines 6 2026-07-24
JAL566 Japan Airlines 6 2026-07-24
JAL491 - 6 2026-07-13
JAL461 Japan Airlines 6 2026-06-12
JAL436 Japan Airlines 6 2026-07-20
JAL435 Japan Airlines 6 2026-07-20
JAL213 - 6 2026-07-18
JAL212 Japan Airlines 6 2026-07-19
JAL674 - 5 2026-07-20
JAL642 - 5 2026-07-07
JAL641 - 5 2026-07-06
JAL572 - 5 2026-06-26
JAL540 Japan Airlines 5 2026-07-23
JAL492 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL192 KMQ → HND Jul 26, 13:30 UTCJul 26, 14:10 UTC40m
2026-07-26 JAL191 HND → KMQ Jul 26, 12:00 UTCJul 26, 12:40 UTC40m
2026-07-26 JAL982 OKA → HND Jul 26, 08:30 UTCJul 26, 10:45 UTC2h 15m
2026-07-26 JAL981 HND → UEO Jul 26, 02:25 UTCJul 26, 04:25 UTC2h 0m
2026-07-26 JAL184 KMQ → HND Jul 26, 00:00 UTCJul 26, 00:45 UTC45m
2026-07-25 JAL183 HND → KMQ Jul 25, 22:30 UTCJul 25, 23:10 UTC40m
2026-07-25 JAL464 TKS → HND Jul 25, 12:10 UTCJul 25, 13:10 UTC1h 0m
2026-07-25 JAL463 HND → TKS Jul 25, 09:50 UTCJul 25, 10:45 UTC55m
2026-07-25 JAL632 KMJ → HND Jul 25, 06:50 UTCJul 25, 08:25 UTC1h 35m
2026-07-25 JAL631 HND → KMJ Jul 25, 04:20 UTCJul 25, 05:35 UTC1h 15m
2026-07-25 JAL626 KMJ → HND Jul 25, 01:55 UTCJul 25, 03:15 UTC1h 20m
2026-07-24 JAL625 HND → KMJ Jul 24, 23:30 UTCJul 25, 00:45 UTC1h 15m
2026-07-24 JAL566 MMB → HND Jul 24, 12:10 UTCJul 24, 13:50 UTC1h 40m
2026-07-24 JAL569 HND → MMB Jul 24, 09:45 UTCJul 24, 11:10 UTC1h 25m
2026-07-24 JAL542 KUH → HND Jul 24, 06:15 UTCJul 24, 07:30 UTC1h 15m
2026-07-24 JAL543 HND → KUH Jul 24, 03:40 UTCJul 24, 04:50 UTC1h 10m
2026-07-24 JAL112 ITM → HND Jul 24, 01:35 UTCJul 24, 02:25 UTC50m
2026-07-23 JAL107 HND → ITM Jul 23, 23:55 UTCJul 24, 00:35 UTC40m
2026-07-23 JAL440 MYJ → HND Jul 23, 10:15 UTCJul 23, 11:25 UTC1h 10m
2026-07-23 JAL439 HND → MYJ Jul 23, 08:10 UTCJul 23, 09:10 UTC1h 0m
2026-07-23 JAL224 KIX → HND Jul 23, 06:00 UTCJul 23, 07:00 UTC1h 0m
2026-07-23 JAL225 HND → KIX Jul 23, 03:55 UTCJul 23, 04:45 UTC50m
2026-07-23 JAL540 KUH → HND Jul 23, 01:30 UTCJul 23, 02:45 UTC1h 15m
2026-07-22 JAL541 HND → KUH Jul 22, 23:15 UTCJul 23, 00:20 UTC1h 5m
2026-07-22 JAL192 KMQ → HND Jul 22, 12:05 UTCJul 22, 12:55 UTC50m
2026-07-22 JAL981 HND → UEO Jul 22, 02:15 UTCJul 22, 04:20 UTC2h 5m
2026-07-21 JAL184 KMQ → HND Jul 21, 23:55 UTCJul 22, 00:50 UTC55m
2026-07-21 JAL183 HND → KMQ Jul 21, 22:35 UTCJul 21, 23:10 UTC35m
2026-07-21 JAL266 HIJ → HND Jul 21, 11:40 UTCJul 21, 12:50 UTC1h 10m
2026-07-21 JAL265 HND → HIJ Jul 21, 09:50 UTCJul 21, 10:45 UTC55m
2026-07-21 JAL376 KKJ → HND Jul 21, 07:20 UTCJul 21, 08:40 UTC1h 20m
2026-07-21 JAL375 HND → KKJ Jul 21, 05:05 UTCJul 21, 06:05 UTC1h 0m
2026-07-21 JAL152 MSJ → HND Jul 21, 02:20 UTCJul 21, 02:55 UTC35m
2026-07-21 JAL153 - Jul 21, 00:00 UTCJul 21, 00:35 UTC35m
2026-07-20 JAL674 - Jul 20, 10:20 UTCJul 20, 11:30 UTC1h 10m
2026-07-20 JAL669 - Jul 20, 08:00 UTCJul 20, 09:05 UTC1h 5m
2026-07-20 JAL436 MYJ → HND Jul 20, 05:25 UTCJul 20, 06:45 UTC1h 20m
2026-07-20 JAL435 HND → MYJ Jul 20, 03:25 UTCJul 20, 04:20 UTC55m
2026-07-20 JAL234 OKJ → HND Jul 20, 01:15 UTCJul 20, 02:10 UTC55m
2026-07-19 JAL231 - Jul 19, 23:20 UTCJul 20, 00:05 UTC45m
2026-07-19 JAL498 - Jul 19, 10:45 UTCJul 19, 11:40 UTC55m
2026-07-19 JAL497 - Jul 19, 08:40 UTCJul 19, 09:20 UTC40m
2026-07-19 JAL659 HND → ASJ Jul 19, 02:55 UTCJul 19, 07:25 UTC4h 30m
2026-07-19 JAL212 SHM → HND Jul 19, 00:50 UTCJul 19, 01:40 UTC50m
2026-07-18 JAL213 - Jul 18, 22:55 UTCJul 18, 23:30 UTC35m
2026-07-18 JAL498 - Jul 18, 10:25 UTCJul 18, 11:20 UTC55m
2026-07-18 JAL497 - Jul 18, 08:20 UTCJul 18, 09:00 UTC40m
2026-07-18 JAL670 - Jul 18, 05:55 UTCJul 18, 07:10 UTC1h 15m
2026-07-18 JAL665 HND → OIT Jul 18, 03:35 UTCJul 18, 04:35 UTC1h 0m
2026-07-18 JAL562 - Jul 18, 00:39 UTCJul 18, 02:09 UTC1h 30m

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 JA327J page for operator, model, and routing details .

Mode-S 851580 frequently asked

What is Mode-S code 851580?
851580 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA327J.
Where is Mode-S 851580 registered?
Mode-S code 851580 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 851580 broadcasting right now?
Yes. Mode-S 851580 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 851580, octal 41212600, decimal 8,721,792.
What flights does 851580 operate?
Mode-S 851580 has broadcast 20 distinct callsigns, including JAL698, JAL695, JAL669, JAL661, JAL630.