Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

861AE4

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA601J · BOEING 767-300

Hex
861AE4
Octal
41415344
Decimal
8,788,708
Country
JP
Tail
JA601J
Type
B763
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
379
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 861AE4.

Country allocation

The ICAO 24-bit address 861AE4 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
JAL2000 Japan Airlines 15 2026-07-24
JAL501 Japan Airlines 14 2026-07-26
JAL530 - 13 2026-07-24
JAL2010 Japan Airlines 13 2026-07-24
JAL2005 Japan Airlines 13 2026-07-24
JAL2019 - 12 2026-07-24
JAL127 - 10 2026-07-07
JAL130 - 9 2026-07-07
JAL645 - 8 2026-07-12
JAL267 - 7 2026-07-11
JAL252 - 7 2026-07-11
JAL118 - 7 2026-07-07
JAL115 - 7 2026-07-07
JAL110 - 7 2026-07-07
JAL103 - 7 2026-07-06
JAL585 - 6 2026-07-13
JAL584 - 6 2026-07-14
JAL318 - 6 2026-07-14
JAL317 - 6 2026-07-14
JAL284 - 6 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL501 HND → CTS Jul 26, 21:55 UTCJul 26, 23:00 UTC1h 5m
2026-07-26 JAL616 NGS → HND Jul 26, 12:55 UTCJul 26, 14:10 UTC1h 15m
2026-07-26 JAL613 HND → NGS Jul 26, 10:35 UTCJul 26, 11:50 UTC1h 15m
2026-07-26 JAL124 ITM → HND Jul 26, 08:10 UTCJul 26, 09:05 UTC55m
2026-07-26 JAL119 HND → ITM Jul 26, 05:45 UTCJul 26, 06:30 UTC45m
2026-07-26 JAL114 ITM → HND Jul 26, 02:50 UTCJul 26, 03:45 UTC55m
2026-07-26 JAL111 HND → ITM Jul 26, 01:00 UTCJul 26, 01:45 UTC45m
2026-07-25 JAL104 ITM → HND Jul 25, 22:50 UTCJul 25, 23:50 UTC1h 0m
2026-07-25 JAL137 HND → ITM Jul 25, 10:40 UTCJul 25, 11:30 UTC50m
2026-07-25 JAL126 ITM → HND Jul 25, 08:15 UTCJul 25, 09:05 UTC50m
2026-07-25 JAL121 HND → ITM Jul 25, 05:50 UTCJul 25, 06:35 UTC45m
2026-07-25 JAL116 ITM → HND Jul 25, 03:45 UTCJul 25, 04:45 UTC1h 0m
2026-07-25 JAL113 HND → ITM Jul 25, 02:05 UTCJul 25, 02:45 UTC40m
2026-07-25 JAL142 AOJ → HND Jul 25, 00:00 UTCJul 25, 00:50 UTC50m
2026-07-24 JAL141 HND → AOJ Jul 24, 22:00 UTCJul 24, 22:55 UTC55m
2026-07-24 JAL530 - Jul 24, 12:50 UTCJul 24, 14:00 UTC1h 10m
2026-07-24 JAL2019 - Jul 24, 10:05 UTCJul 24, 11:35 UTC1h 30m
2026-07-24 JAL2010 CTS → ITM Jul 24, 07:10 UTCJul 24, 08:40 UTC1h 30m
2026-07-24 JAL2005 ITM → CTS Jul 24, 02:55 UTCJul 24, 04:25 UTC1h 30m
2026-07-24 JAL2000 CTS → ITM Jul 24, 00:10 UTCJul 24, 01:40 UTC1h 30m
2026-07-23 JAL501 - Jul 23, 22:05 UTCJul 23, 23:20 UTC1h 15m
2026-07-23 JAL530 - Jul 23, 12:50 UTCJul 23, 14:10 UTC1h 20m
2026-07-23 JAL2019 - Jul 23, 10:00 UTCJul 23, 11:30 UTC1h 30m
2026-07-23 JAL2010 CTS → ITM Jul 23, 07:15 UTCJul 23, 08:45 UTC1h 30m
2026-07-23 JAL2005 ITM → CTS Jul 23, 03:05 UTCJul 23, 04:35 UTC1h 30m
2026-07-23 JAL2000 CTS → ITM Jul 23, 00:10 UTCJul 23, 01:40 UTC1h 30m
2026-07-22 JAL501 - Jul 22, 21:55 UTCJul 22, 23:05 UTC1h 10m
2026-07-22 JAL616 - Jul 22, 11:35 UTCJul 22, 13:00 UTC1h 25m
2026-07-22 JAL119 HND → ITM Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-22 JAL114 ITM → HND Jul 22, 02:45 UTCJul 22, 03:45 UTC1h 0m
2026-07-22 JAL111 HND → ITM Jul 22, 00:55 UTCJul 22, 01:40 UTC45m
2026-07-21 JAL104 ITM → HND Jul 21, 22:45 UTCJul 21, 23:35 UTC50m
2026-07-21 JAL137 HND → ITM Jul 21, 10:30 UTCJul 21, 11:15 UTC45m
2026-07-21 JAL126 ITM → HND Jul 21, 08:35 UTCJul 21, 09:30 UTC55m
2026-07-21 JAL121 HND → ITM Jul 21, 06:35 UTCJul 21, 07:20 UTC45m
2026-07-21 JAL116 ITM → HND Jul 21, 04:40 UTCJul 21, 05:25 UTC45m
2026-07-21 JAL113 HND → ITM Jul 21, 02:45 UTCJul 21, 03:25 UTC40m
2026-07-21 JAL142 AOJ → HND Jul 21, 00:30 UTCJul 21, 01:20 UTC50m
2026-07-20 JAL141 HND → AOJ Jul 20, 22:00 UTCJul 20, 22:55 UTC55m
2026-07-20 JAL530 - Jul 20, 12:35 UTCJul 20, 13:50 UTC1h 15m
2026-07-20 JAL2019 - Jul 20, 09:50 UTCJul 20, 11:15 UTC1h 25m
2026-07-20 JAL2010 CTS → ITM Jul 20, 07:15 UTCJul 20, 08:50 UTC1h 35m
2026-07-20 JAL2005 ITM → CTS Jul 20, 03:05 UTCJul 20, 04:30 UTC1h 25m
2026-07-20 JAL2000 - Jul 20, 00:15 UTCJul 20, 01:55 UTC1h 40m
2026-07-19 JAL501 - Jul 19, 21:55 UTCJul 19, 23:00 UTC1h 5m
2026-07-19 JAL616 - Jul 19, 11:40 UTCJul 19, 13:10 UTC1h 30m
2026-07-19 JAL613 - Jul 19, 09:15 UTCJul 19, 10:35 UTC1h 20m
2026-07-19 JAL124 - Jul 19, 06:45 UTCJul 19, 07:40 UTC55m
2026-07-19 JAL119 HND → ITM Jul 19, 04:50 UTCJul 19, 05:30 UTC40m
2026-07-19 JAL114 ITM → HND Jul 19, 02:50 UTCJul 19, 03:45 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 JA601J page for operator, model, and routing details .

Mode-S 861AE4 frequently asked

What is Mode-S code 861AE4?
861AE4 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA601J.
Where is Mode-S 861AE4 registered?
Mode-S code 861AE4 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861AE4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861AE4, octal 41415344, decimal 8,788,708.
What flights does 861AE4 operate?
Mode-S 861AE4 has broadcast 20 distinct callsigns, including JAL2000, JAL501, JAL530, JAL2010, JAL2005.