Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

861F44

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA617J · BOEING 767-300

Hex
861F44
Octal
41417504
Decimal
8,789,828
Country
JP
Tail
JA617J
Type
B763
No current signal · last broadcast 5h ago
Flights observed
112
Distinct callsigns
16
Country
JP
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 861F44.

Country allocation

The ICAO 24-bit address 861F44 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 16 distinct

Callsign Airline Flights Last seen
JAL786 Japan Airlines 21 2026-05-29
JAL785 Japan Airlines 14 2026-05-29
JAL942 Japan Airlines 9 2026-05-29
JAL8663 Japan Airlines 8 2026-05-19
JAL751 Japan Airlines 8 2026-05-04
JAL726 Japan Airlines 7 2026-05-18
JAL8664 Japan Airlines 6 2026-05-19
JAL711 Japan Airlines 6 2026-05-13
JAL38 Japan Airlines 6 2026-05-13
JAL85 Japan Airlines 5 2026-05-14
JAL725 Japan Airlines 5 2026-05-18
JAL712 Japan Airlines 5 2026-05-15
JAL35 Japan Airlines 5 2026-05-14
JAL752 Japan Airlines 4 2026-05-15
JAL802 Japan Airlines 2 2026-04-13
JAL86 Japan Airlines 1 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JAL785 HNL → NRT May 29, 23:45 UTCMay 30, 00:00 UTC15m
2026-05-29 JAL786 NRT → HNL May 29, 12:20 UTCMay 29, 12:50 UTC30m
2026-05-29 JAL942 GUM → NRT May 29, 01:15 UTCMay 29, 10:25 UTC9h 10m
2026-05-20 JAL785 HNL → NRT May 20, 23:30 UTCMay 21, 07:40 UTC8h 10m
2026-05-20 JAL786 NRT → HNL May 20, 20:20 UTCMay 20, 20:45 UTC25m
2026-05-20 JAL786 NRT → HNL May 20, 13:45 UTCMay 20, 14:15 UTC30m
2026-05-20 JAL942 GUM → NRT May 20, 01:20 UTCMay 20, 10:05 UTC8h 46m
2026-05-19 JAL8664 TPE → NRT May 19, 05:00 UTCMay 19, 08:00 UTC3h 0m
2026-05-19 JAL8663 NRT → TPE May 19, 02:50 UTCMay 19, 03:05 UTC15m
2026-05-19 JAL8663 NRT → TPE May 19, 00:20 UTCMay 19, 01:20 UTC1h 0m
2026-05-18 JAL726 CGK → NRT May 18, 17:05 UTCMay 18, 22:15 UTC5h 9m
2026-05-18 JAL725 NRT → CGK May 18, 09:45 UTCMay 18, 09:55 UTC10m
2026-05-18 JAL725 NRT → CGK May 18, 02:50 UTCMay 18, 08:10 UTC5h 20m
2026-05-17 JAL726 CGK → NRT May 17, 16:45 UTCMay 17, 22:35 UTC5h 50m
2026-05-17 JAL726 CGK → NRT May 17, 15:10 UTCMay 17, 15:20 UTC10m
2026-05-17 JAL725 NRT → CGK May 17, 02:50 UTCMay 17, 08:25 UTC5h 35m
2026-05-16 JAL726 CGK → NRT May 16, 16:50 UTCMay 16, 22:05 UTC5h 15m
2026-05-16 JAL726 CGK → NRT May 16, 15:05 UTCMay 16, 15:16 UTC10m
2026-05-16 JAL725 NRT → CGK May 16, 02:45 UTCMay 16, 08:20 UTC5h 36m
2026-05-15 JAL752 HAN → NRT May 15, 09:40 UTCMay 15, 21:45 UTC12h 4m
2026-05-15 JAL712 SIN → NRT May 15, 03:50 UTCMay 15, 07:15 UTC3h 25m
2026-05-14 JAL35 HND → SIN May 14, 15:40 UTCMay 14, 22:20 UTC6h 40m
2026-05-14 JAL85 HND → PVG May 14, 03:05 UTCMay 14, 10:45 UTC7h 40m
2026-05-13 JAL38 SIN → HND May 13, 21:20 UTCMay 14, 00:45 UTC3h 25m
2026-05-13 JAL38 SIN → HND May 13, 18:15 UTCMay 13, 18:25 UTC10m
2026-05-13 JAL711 NRT → SIN May 13, 09:40 UTCMay 13, 14:40 UTC5h 0m
2026-05-13 JAL712 SIN → NRT May 13, 03:50 UTCMay 13, 07:05 UTC3h 15m
2026-05-12 JAL35 HND → SIN May 12, 15:25 UTCMay 12, 21:50 UTC6h 25m
2026-05-12 JAL85 HND → PVG May 12, 02:55 UTCMay 12, 10:45 UTC7h 50m
2026-05-11 JAL711 NRT → SIN May 11, 09:35 UTCMay 11, 22:35 UTC13h 0m
2026-05-10 JAL785 HNL → NRT May 10, 23:25 UTCMay 11, 07:20 UTC7h 55m
2026-05-10 JAL786 NRT → HNL May 10, 18:49 UTCMay 10, 19:05 UTC15m
2026-05-10 JAL786 NRT → HNL May 10, 12:00 UTCMay 10, 12:30 UTC30m
2026-05-10 JAL942 GUM → NRT May 10, 01:09 UTCMay 10, 10:00 UTC8h 50m
2026-05-09 JAL712 SIN → NRT May 9, 04:35 UTCMay 9, 07:25 UTC2h 50m
2026-05-08 JAL35 HND → SIN May 8, 15:30 UTCMay 8, 19:15 UTC3h 45m
2026-05-08 JAL85 HND → PVG May 8, 02:59 UTCMay 8, 10:44 UTC7h 45m
2026-05-07 JAL711 NRT → SIN May 7, 10:10 UTCMay 8, 00:49 UTC14h 40m
2026-05-06 JAL785 HNL → NRT May 6, 23:30 UTCMay 7, 07:50 UTC8h 20m
2026-05-06 JAL786 NRT → HNL May 6, 18:45 UTCMay 6, 19:00 UTC15m
2026-05-06 JAL786 NRT → HNL May 6, 12:15 UTCMay 6, 12:45 UTC30m
2026-05-06 JAL942 GUM → NRT May 6, 01:15 UTCMay 6, 10:20 UTC9h 5m
2026-05-05 JAL8664 TPE → NRT May 5, 06:45 UTCMay 5, 08:00 UTC1h 15m
2026-05-05 JAL8663 NRT → TPE May 5, 03:35 UTCMay 5, 03:55 UTC20m
2026-05-05 JAL8663 NRT → TPE May 5, 00:20 UTCMay 5, 01:45 UTC1h 25m
2026-05-04 JAL751 NRT → HAN May 4, 10:05 UTCMay 4, 21:45 UTC11h 41m
2026-05-03 JAL785 HNL → NRT May 3, 23:35 UTCMay 4, 07:25 UTC7h 50m
2026-05-03 JAL786 NRT → HNL May 3, 18:30 UTCMay 3, 18:50 UTC20m
2026-05-03 JAL786 NRT → HNL May 3, 12:05 UTCMay 3, 12:35 UTC30m
2026-05-03 JAL942 GUM → NRT May 3, 01:15 UTCMay 3, 10:10 UTC8h 54m

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 JA617J page for operator, model, and routing details .

Mode-S 861F44 frequently asked

What is Mode-S code 861F44?
861F44 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA617J.
Where is Mode-S 861F44 registered?
Mode-S code 861F44 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861F44 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861F44, octal 41417504, decimal 8,789,828.
What flights does 861F44 operate?
Mode-S 861F44 has broadcast 16 distinct callsigns, including JAL786, JAL785, JAL942, JAL8663, JAL751.