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 Jul 26, 21:45 UTC
Flights observed
258
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 21:45 UTC

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 20 distinct

Callsign Airline Flights Last seen
JAL786 Japan Airlines 29 2026-07-21
JAL785 Japan Airlines 21 2026-07-22
JAL725 - 19 2026-07-12
JAL38 Japan Airlines 19 2026-07-24
JAL8663 Japan Airlines 18 2026-07-20
JAL726 - 16 2026-07-12
JAL712 Japan Airlines 16 2026-07-26
JAL711 Japan Airlines 16 2026-07-24
JA617J - 16 2026-06-29
JAL751 Japan Airlines 15 2026-07-26
JAL35 Japan Airlines 15 2026-07-25
JAL942 Japan Airlines 12 2026-07-23
JAL8664 - 12 2026-07-20
JAL85 - 12 2026-07-18
JAL752 Japan Airlines 10 2026-07-26
JAL86 Japan Airlines 3 2026-07-25
JAL941 - 2 2026-06-17
JAL802 Japan Airlines 2 2026-04-13
JL617J - 1 2026-06-21
JAL736 Japan Airlines 1 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL752 HAN → NRT Jul 26, 19:55 UTCJul 26, 21:35 UTC1h 40m
2026-07-26 JAL751 NRT → HAN Jul 26, 10:00 UTCJul 26, 12:35 UTC2h 35m
2026-07-26 JAL712 SIN → NRT Jul 26, 03:35 UTCJul 26, 07:10 UTC3h 36m
2026-07-25 JAL35 HND → SIN Jul 25, 15:35 UTCJul 25, 21:55 UTC6h 20m
2026-07-25 JAL86 PVG → HND Jul 25, 03:00 UTCJul 25, 10:45 UTC7h 45m
2026-07-24 JAL38 SIN → HND Jul 24, 20:00 UTCJul 25, 00:50 UTC4h 50m
2026-07-24 JAL711 NRT → SIN Jul 24, 09:45 UTCJul 24, 14:35 UTC4h 50m
2026-07-23 JAL942 GUM → NRT Jul 23, 01:15 UTCJul 23, 10:05 UTC8h 50m
2026-07-22 JAL785 HNL → NRT Jul 22, 00:05 UTCJul 22, 00:25 UTC20m
2026-07-21 JAL786 NRT → HNL Jul 21, 12:00 UTCJul 21, 19:20 UTC7h 20m
2026-07-21 JAL736 HKG → NRT Jul 21, 03:55 UTCJul 21, 07:50 UTC3h 55m
2026-07-20 JAL735 NRT → HKG Jul 20, 09:45 UTCJul 20, 13:40 UTC3h 55m
2026-07-20 JAL8664 TPE → NRT Jul 20, 05:05 UTCJul 20, 08:00 UTC2h 55m
2026-07-20 JAL8663 NRT → TPE Jul 20, 00:30 UTCJul 20, 03:25 UTC2h 55m
2026-07-19 JAL752 - Jul 19, 16:45 UTCJul 19, 22:00 UTC5h 15m
2026-07-19 JAL751 - Jul 19, 09:45 UTCJul 19, 13:25 UTC3h 40m
2026-07-19 JAL712 SIN → NRT Jul 19, 02:05 UTCJul 19, 07:10 UTC5h 5m
2026-07-19 JAL712 SIN → NRT Jul 19, 00:25 UTCJul 19, 00:35 UTC10m
2026-07-18 JAL35 HND → SIN Jul 18, 15:40 UTCJul 18, 20:40 UTC5h 0m
2026-07-18 JAL85 HND → HND Jul 18, 03:20 UTCJul 18, 10:50 UTC7h 30m
2026-07-17 JAL38 SIN → HND Jul 17, 21:30 UTCJul 18, 01:10 UTC3h 40m
2026-07-17 JAL38 SIN → HND Jul 17, 18:25 UTCJul 17, 18:34 UTC10m
2026-07-17 JAL711 - Jul 17, 09:50 UTCJul 17, 14:35 UTC4h 45m
2026-07-17 JAL712 - Jul 17, 03:30 UTCJul 17, 07:14 UTC3h 45m
2026-07-16 JAL35 - Jul 16, 15:35 UTCJul 16, 21:55 UTC6h 20m
2026-07-16 JAL86 HND → HND Jul 16, 03:05 UTCJul 16, 10:50 UTC7h 45m
2026-07-15 JAL38 - Jul 15, 21:10 UTCJul 16, 00:40 UTC3h 30m
2026-07-15 JAL711 - Jul 15, 16:00 UTCJul 15, 16:20 UTC20m
2026-07-15 JAL711 - Jul 15, 10:00 UTCJul 15, 13:25 UTC3h 25m
2026-07-15 JAL785 - Jul 15, 00:00 UTCJul 15, 07:45 UTC7h 45m
2026-07-14 JAL786 - Jul 14, 12:10 UTCJul 14, 19:20 UTC7h 10m
2026-07-14 JAL942 NRT → NRT Jul 14, 01:05 UTCJul 14, 09:55 UTC8h 50m
2026-07-13 JAL8664 - Jul 13, 05:05 UTCJul 13, 08:10 UTC3h 5m
2026-07-13 JAL8663 - Jul 13, 02:45 UTCJul 13, 03:10 UTC25m
2026-07-13 JAL8663 - Jul 13, 00:25 UTCJul 13, 01:35 UTC1h 10m
2026-07-12 JAL726 - Jul 12, 16:45 UTCJul 12, 22:25 UTC5h 40m
2026-07-12 JAL726 - Jul 12, 15:01 UTCJul 12, 15:10 UTC10m
2026-07-12 JAL725 - Jul 12, 09:10 UTCJul 12, 09:25 UTC15m
2026-07-12 JAL725 - Jul 12, 02:40 UTCJul 12, 07:45 UTC5h 5m
2026-07-11 JAL726 - Jul 11, 16:45 UTCJul 11, 22:05 UTC5h 20m
2026-07-11 JAL725 - Jul 11, 09:45 UTCJul 11, 10:00 UTC15m
2026-07-11 JAL725 NRT → MZV Jul 11, 02:40 UTCJul 11, 08:05 UTC5h 25m
2026-07-10 JAL8664 TPE → NRT Jul 10, 05:05 UTCJul 10, 07:55 UTC2h 50m
2026-07-10 JAL8663 - Jul 10, 02:45 UTCJul 10, 03:10 UTC25m
2026-07-10 JAL8663 - Jul 10, 00:15 UTCJul 10, 01:30 UTC1h 15m
2026-07-09 JAL752 - Jul 9, 19:50 UTCJul 9, 21:35 UTC1h 45m
2026-07-09 JAL751 - Jul 9, 10:05 UTCJul 9, 11:35 UTC1h 30m
2026-07-09 JAL712 - Jul 9, 03:45 UTCJul 9, 07:05 UTC3h 20m
2026-07-08 JAL35 - Jul 8, 21:55 UTCJul 8, 22:15 UTC20m
2026-07-08 JAL35 - Jul 8, 16:10 UTCJul 8, 19:10 UTC3h 0m

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 Jul 26, 21:45 UTC.
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 20 distinct callsigns, including JAL786, JAL785, JAL725, JAL38, JAL8663.