Apparatus

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sensors Mode-S transponder

861F88

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA619J · BOEING 767-300

Hex
861F88
Octal
41417610
Decimal
8,789,896
Country
JP
Tail
JA619J
Type
B763
No current signal · last broadcast Jul 26, 19:45 UTC
Flights observed
241
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 19:45 UTC

Last known position

Most recent position reported by Mode-S 861F88.

Country allocation

The ICAO 24-bit address 861F88 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
JAL786 Japan Airlines 26 2026-07-26
JAL725 - 25 2026-06-30
JAL785 - 18 2026-06-26
JAL35 Japan Airlines 18 2026-07-23
JAL8663 - 17 2026-06-21
JAL726 - 17 2026-06-30
JAL711 - 17 2026-07-22
JAL38 Japan Airlines 17 2026-07-22
JAL942 Japan Airlines 15 2026-07-26
JAL8664 - 14 2026-07-01
JAL751 Japan Airlines 14 2026-07-24
JAL712 Japan Airlines 14 2026-07-24
JAL752 Japan Airlines 10 2026-07-24
JAL85 - 7 2026-06-27
JAL86 Japan Airlines 4 2026-05-28
JAL941 Japan Airlines 3 2026-06-15
JL8663 - 2 2026-07-01
JL35 Japan Airlines 1 2026-04-21
JAL8162 - 1 2026-07-20
JAL8161 - 1 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL786 NRT → HNL Jul 26, 19:35 UTCJul 26, 19:45 UTC10m
2026-07-26 JAL786 NRT → HNL Jul 26, 12:50 UTCJul 26, 13:25 UTC35m
2026-07-26 JAL942 GUM → NRT Jul 26, 01:15 UTCJul 26, 10:00 UTC8h 46m
2026-07-24 JAL752 HAN → NRT Jul 24, 19:50 UTCJul 24, 21:35 UTC1h 45m
2026-07-24 JAL752 HAN → NRT Jul 24, 16:50 UTCJul 24, 17:00 UTC10m
2026-07-24 JAL751 NRT → HAN Jul 24, 10:05 UTCJul 24, 11:40 UTC1h 35m
2026-07-24 JAL712 SIN → NRT Jul 24, 00:35 UTCJul 24, 07:20 UTC6h 45m
2026-07-23 JAL35 HND → SIN Jul 23, 15:55 UTCJul 23, 22:30 UTC6h 35m
2026-07-22 JAL38 SIN → HND Jul 22, 22:25 UTCJul 23, 01:50 UTC3h 25m
2026-07-22 JAL38 SIN → HND Jul 22, 19:20 UTCJul 22, 19:30 UTC10m
2026-07-22 JAL711 - Jul 22, 15:40 UTCJul 22, 16:00 UTC20m
2026-07-22 JAL711 - Jul 22, 11:10 UTCJul 22, 13:00 UTC1h 50m
2026-07-20 JAL8162 - Jul 20, 23:45 UTCJul 21, 01:35 UTC1h 50m
2026-07-01 JAL8161 - Jul 1, 11:20 UTCJul 1, 13:10 UTC1h 50m
2026-07-01 JAL8664 TPE → NRT Jul 1, 05:10 UTCJul 1, 08:00 UTC2h 50m
2026-07-01 JL8663 - Jul 1, 03:05 UTCJul 1, 03:30 UTC25m
2026-07-01 JL8663 - Jul 1, 00:20 UTCJul 1, 01:05 UTC45m
2026-06-30 JAL726 - Jun 30, 16:45 UTCJun 30, 22:40 UTC5h 55m
2026-06-30 JAL725 - Jun 30, 10:45 UTCJun 30, 11:00 UTC15m
2026-06-30 JAL725 - Jun 30, 04:05 UTCJun 30, 09:25 UTC5h 20m
2026-06-29 JAL942 NRT → NRT Jun 29, 01:20 UTCJun 29, 10:04 UTC8h 45m
2026-06-28 JAL752 - Jun 28, 18:05 UTCJun 28, 22:39 UTC4h 35m
2026-06-28 JAL751 - Jun 28, 09:39 UTCJun 28, 15:09 UTC5h 30m
2026-06-28 JAL712 - Jun 28, 02:05 UTCJun 28, 07:29 UTC5h 25m
2026-06-27 JAL35 - Jun 27, 21:44 UTCJun 27, 22:09 UTC25m
2026-06-27 JAL35 - Jun 27, 15:39 UTCJun 27, 19:15 UTC3h 35m
2026-06-27 JAL85 HND → HND Jun 27, 03:49 UTCJun 27, 10:50 UTC7h 0m
2026-06-26 JAL38 - Jun 26, 20:29 UTCJun 27, 01:35 UTC5h 5m
2026-06-26 JAL38 - Jun 26, 19:00 UTCJun 26, 19:09 UTC10m
2026-06-26 JAL711 - Jun 26, 10:50 UTCJun 26, 15:45 UTC4h 55m
2026-06-26 JAL785 - Jun 26, 00:05 UTCJun 26, 08:05 UTC8h 0m
2026-06-25 JAL786 - Jun 25, 11:59 UTCJun 25, 12:35 UTC35m
2026-06-25 JAL942 - Jun 25, 01:09 UTCJun 25, 09:50 UTC8h 40m
2026-06-24 JAL726 - Jun 24, 16:40 UTCJun 24, 22:25 UTC5h 45m
2026-06-24 JAL725 - Jun 24, 09:24 UTCJun 24, 09:39 UTC15m
2026-06-24 JAL725 - Jun 24, 02:34 UTCJun 24, 07:54 UTC5h 20m
2026-06-23 JAL726 - Jun 23, 16:35 UTCJun 23, 22:10 UTC5h 35m
2026-06-23 JAL725 - Jun 23, 09:54 UTCJun 23, 10:10 UTC15m
2026-06-23 JAL725 - Jun 23, 02:45 UTCJun 23, 08:25 UTC5h 40m
2026-06-22 JAL726 - Jun 22, 17:04 UTCJun 23, 00:09 UTC7h 5m
2026-06-22 JAL725 - Jun 22, 09:40 UTCJun 22, 09:54 UTC15m
2026-06-22 JAL725 - Jun 22, 02:45 UTCJun 22, 08:04 UTC5h 20m
2026-06-21 JAL8664 - Jun 21, 05:10 UTCJun 21, 07:49 UTC2h 40m
2026-06-21 JAL8663 - Jun 21, 03:05 UTCJun 21, 03:30 UTC25m
2026-06-21 JAL8663 - Jun 21, 00:25 UTCJun 21, 01:35 UTC1h 10m
2026-06-20 JAL752 - Jun 20, 16:44 UTCJun 20, 21:25 UTC4h 40m
2026-06-20 JAL751 - Jun 20, 10:04 UTCJun 20, 15:19 UTC5h 15m
2026-06-20 JAL785 - Jun 20, 00:04 UTCJun 20, 08:09 UTC8h 5m
2026-06-19 JAL786 - Jun 19, 12:19 UTCJun 19, 12:49 UTC30m
2026-06-19 JAL942 NRT → NRT Jun 19, 01:19 UTCJun 19, 10:09 UTC8h 50m

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 JA619J page for operator, model, and routing details .

Mode-S 861F88 frequently asked

What is Mode-S code 861F88?
861F88 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA619J.
Where is Mode-S 861F88 registered?
Mode-S code 861F88 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861F88 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861F88, octal 41417610, decimal 8,789,896.
What flights does 861F88 operate?
Mode-S 861F88 has broadcast 20 distinct callsigns, including JAL786, JAL725, JAL785, JAL35, JAL8663.