sensors Mode-S transponder

861E9A

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA612J · BOEING 767-300

Hex
861E9A
Octal
41417232
Decimal
8,789,658
Country
JP
Tail
JA612J
Type
B763
Transponder active on ground
Flights observed
272
Distinct callsigns
20
Country
JP
Last broadcast
52m ago

Last known position

Most recent position reported by Mode-S 861E9A.

Country allocation

The ICAO 24-bit address 861E9A 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
JAL553 Japan Airlines 10 2026-05-29
JAL530 Japan Airlines 10 2026-05-28
JAL501 Japan Airlines 10 2026-05-27
JAL2019 Japan Airlines 10 2026-05-28
JAL2010 Japan Airlines 10 2026-05-28
JAL2005 Japan Airlines 10 2026-05-28
JAL2000 Japan Airlines 10 2026-05-28
JAL554 Japan Airlines 9 2026-05-29
JAL454 Japan Airlines 9 2026-05-30
JAL453 Japan Airlines 9 2026-05-29
JAL285 Japan Airlines 9 2026-05-29
JAL118 Japan Airlines 9 2026-05-26
JAL115 Japan Airlines 9 2026-05-26
JAL110 Japan Airlines 9 2026-05-26
JAL103 Japan Airlines 9 2026-05-25
JAL286L Japan Airlines 8 2026-05-29
JAL589 Japan Airlines 7 2026-05-25
JAL588 Japan Airlines 7 2026-05-25
JAL318 Japan Airlines 7 2026-05-21
JAL317 Japan Airlines 7 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 JAL454 TKS → HND May 30, 00:20 UTCMay 30, 00:30 UTC10m
2026-05-29 JAL453 HND → TKS May 29, 22:25 UTCMay 29, 23:15 UTC50m
2026-05-29 JAL286L IZO → HND May 29, 10:35 UTCMay 29, 11:20 UTC45m
2026-05-29 JAL285 HND → IZO May 29, 08:15 UTCMay 29, 09:10 UTC55m
2026-05-29 JAL554 AKJ → HND May 29, 05:25 UTCMay 29, 07:00 UTC1h 35m
2026-05-29 JAL553 HND → AKJ May 29, 03:05 UTCMay 29, 04:15 UTC1h 10m
2026-05-29 JAL454 TKS → HND May 29, 00:10 UTCMay 29, 01:00 UTC50m
2026-05-28 JAL453 HND → TKS May 28, 22:15 UTCMay 28, 23:05 UTC50m
2026-05-28 JAL530 CTS → HND May 28, 12:25 UTCMay 28, 13:45 UTC1h 20m
2026-05-28 JAL2019 ITM → CTS May 28, 09:50 UTCMay 28, 11:25 UTC1h 35m
2026-05-28 JAL2010 CTS → ITM May 28, 07:05 UTCMay 28, 08:40 UTC1h 35m
2026-05-28 JAL2005 ITM → CTS May 28, 03:00 UTCMay 28, 04:25 UTC1h 25m
2026-05-28 JAL2000 CTS → ITM May 28, 00:15 UTCMay 28, 01:50 UTC1h 35m
2026-05-27 JAL501 HND → CTS May 27, 21:55 UTCMay 27, 23:05 UTC1h 10m
2026-05-27 JAL530 CTS → HND May 27, 12:30 UTCMay 27, 13:40 UTC1h 10m
2026-05-27 JAL2019 ITM → CTS May 27, 09:50 UTCMay 27, 11:20 UTC1h 30m
2026-05-27 JAL2010 CTS → ITM May 27, 07:00 UTCMay 27, 08:40 UTC1h 40m
2026-05-27 JAL2005 ITM → CTS May 27, 02:59 UTCMay 27, 04:30 UTC1h 30m
2026-05-27 JAL2000 CTS → ITM May 27, 00:10 UTCMay 27, 01:49 UTC1h 40m
2026-05-26 JAL501 HND → CTS May 26, 21:49 UTCMay 26, 23:05 UTC1h 15m
2026-05-26 JAL4002 NGO → HND May 26, 11:09 UTCMay 26, 12:00 UTC50m
2026-05-26 JAL127 HND → ITM May 26, 07:55 UTCMay 26, 08:39 UTC45m
2026-05-26 JAL118 ITM → HND May 26, 04:50 UTCMay 26, 05:34 UTC45m
2026-05-26 JAL115 HND → ITM May 26, 02:55 UTCMay 26, 03:35 UTC40m
2026-05-26 JAL110 ITM → HND May 26, 00:39 UTCMay 26, 01:24 UTC45m
2026-05-25 JAL103 HND → ITM May 25, 22:49 UTCMay 25, 23:35 UTC45m
2026-05-25 JAL588 HKD → HND May 25, 11:20 UTCMay 25, 12:30 UTC1h 10m
2026-05-25 JAL589 HND → HKD May 25, 09:15 UTCMay 25, 10:20 UTC1h 5m
2026-05-25 JAL646C KOJ → HND May 25, 04:20 UTCMay 25, 05:25 UTC1h 5m
2026-05-25 JAL645 HND → KOJ May 25, 01:55 UTCMay 25, 02:30 UTC35m
2026-05-24 JAL252 HIJ → HND May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 JAL267 HND → HIJ May 24, 11:30 UTCMay 24, 12:30 UTC1h 0m
2026-05-24 JAL634 KMJ → HND May 24, 09:15 UTCMay 24, 10:20 UTC1h 5m
2026-05-24 JAL633 HND → KMJ May 24, 06:45 UTCMay 24, 08:05 UTC1h 20m
2026-05-24 JAL256 HIJ → HND May 24, 03:30 UTCMay 24, 04:30 UTC1h 0m
2026-05-24 JAL257 HND → HIJ May 24, 01:20 UTCMay 24, 02:25 UTC1h 5m
2026-05-23 JAL655 HND → KOJ May 23, 10:45 UTCMay 24, 00:15 UTC13h 30m
2026-05-23 JAL650 KOJ → HND May 23, 08:15 UTCMay 23, 09:25 UTC1h 10m
2026-05-23 JAL649 HND → KOJ May 23, 05:40 UTCMay 23, 06:50 UTC1h 10m
2026-05-22 JAL643 HND → KOJ May 22, 23:30 UTCMay 23, 03:45 UTC4h 14m
2026-05-22 JAL530 CTS → HND May 22, 12:40 UTCMay 22, 13:50 UTC1h 10m
2026-05-22 JAL2019 ITM → CTS May 22, 09:50 UTCMay 22, 11:35 UTC1h 45m
2026-05-22 JAL2010 CTS → ITM May 22, 07:10 UTCMay 22, 08:40 UTC1h 30m
2026-05-22 JAL2005 ITM → CTS May 22, 03:00 UTCMay 22, 04:40 UTC1h 40m
2026-05-22 JAL2000 CTS → ITM May 22, 00:10 UTCMay 22, 01:45 UTC1h 35m
2026-05-21 JAL501 HND → CTS May 21, 21:55 UTCMay 21, 23:05 UTC1h 10m
2026-05-21 JAL588 HKD → HND May 21, 10:55 UTCMay 21, 12:05 UTC1h 10m
2026-05-21 JAL589 HND → HKD May 21, 08:50 UTCMay 21, 09:50 UTC1h 0m
2026-05-21 JAL318 FUK → HND May 21, 06:35 UTCMay 21, 07:50 UTC1h 15m
2026-05-21 JAL317 HND → FUK May 21, 03:25 UTCMay 21, 05:05 UTC1h 40m

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 JA612J page for operator, model, and routing details .

Mode-S 861E9A frequently asked

What is Mode-S code 861E9A?
861E9A is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA612J.
Where is Mode-S 861E9A registered?
Mode-S code 861E9A is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861E9A broadcasting right now?
Mode-S 861E9A is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861E9A, octal 41417232, decimal 8,789,658.
What flights does 861E9A operate?
Mode-S 861E9A has broadcast 20 distinct callsigns, including JAL553, JAL530, JAL501, JAL2019, JAL2010.