Apparatus

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sensors Mode-S transponder

850DF2

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA304J · BOEING 737-800

Hex
850DF2
Octal
41206762
Decimal
8,719,858
Country
JP
Tail
JA304J
Type
B738
No current signal · last broadcast Jul 26, 14:05 UTC
Flights observed
324
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 14:05 UTC

Last known position

Most recent position reported by Mode-S 850DF2.

Country allocation

The ICAO 24-bit address 850DF2 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
JAL809 Japan Airlines 29 2026-07-25
JAL802 Japan Airlines 25 2026-07-26
JAL8671 - 19 2026-07-14
JAL208 Japan Airlines 18 2026-07-26
JAL89 - 17 2026-07-10
JAL8670 - 17 2026-07-14
JAL3084 Japan Airlines 17 2026-07-25
JAL3082 Japan Airlines 17 2026-07-24
JAL201 Japan Airlines 17 2026-07-23
JAL3087 Japan Airlines 16 2026-07-21
JAL3083 Japan Airlines 16 2026-07-25
JAL159 Japan Airlines 12 2026-07-23
JAL153 - 11 2026-07-22
JAL158 Japan Airlines 10 2026-07-23
JAL20 - 9 2026-07-13
JAL152 Japan Airlines 9 2026-07-23
JAL841 Japan Airlines 6 2026-07-24
JAL25 - 6 2026-07-12
JAL80 Japan Airlines 4 2026-05-12
JAL629 Japan Airlines 4 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL208 NGO → HND Jul 26, 13:25 UTCJul 26, 14:00 UTC35m
2026-07-26 JL3087 NRT → NGO Jul 26, 10:20 UTCJul 26, 10:45 UTC25m
2026-07-26 JAL802 TPE → NRT Jul 26, 02:50 UTCJul 26, 05:50 UTC3h 0m
2026-07-25 JAL809 NRT → TPE Jul 25, 12:30 UTCJul 25, 12:45 UTC15m
2026-07-25 JAL809 NRT → TPE Jul 25, 09:50 UTCJul 25, 11:10 UTC1h 20m
2026-07-25 JAL3084 NGO → NRT Jul 25, 05:55 UTCJul 25, 06:35 UTC40m
2026-07-25 JAL3083 NRT → NGO Jul 25, 01:55 UTCJul 25, 02:20 UTC25m
2026-07-24 JAL3082 NGO → NRT Jul 24, 23:35 UTCJul 25, 00:25 UTC50m
2026-07-24 JAL841 NGO → TSN Jul 24, 02:00 UTCJul 24, 08:35 UTC6h 35m
2026-07-23 JAL201 HND → NGO Jul 23, 23:45 UTCJul 24, 00:15 UTC30m
2026-07-23 JAL158 MSJ → HND Jul 23, 10:55 UTCJul 23, 11:30 UTC35m
2026-07-23 JAL159 HND → MSJ Jul 23, 08:30 UTCJul 23, 09:05 UTC35m
2026-07-23 JAL152 MSJ → HND Jul 23, 02:00 UTCJul 23, 02:40 UTC40m
2026-07-22 JAL153 - Jul 22, 23:45 UTCJul 23, 00:15 UTC30m
2026-07-22 JAL158 MSJ → HND Jul 22, 11:10 UTCJul 22, 12:15 UTC1h 5m
2026-07-22 JAL145 HND → AOJ Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-22 JAL374 KKJ → HND Jul 22, 02:00 UTCJul 22, 03:25 UTC1h 25m
2026-07-22 JAL373C - Jul 22, 00:00 UTCJul 22, 01:00 UTC1h 0m
2026-07-21 JAL208 NGO → HND Jul 21, 12:20 UTCJul 21, 13:00 UTC40m
2026-07-21 JAL3087 NRT → NGO Jul 21, 10:30 UTCJul 21, 11:05 UTC35m
2026-07-21 JAL3084 - Jul 21, 06:00 UTCJul 21, 06:45 UTC45m
2026-07-21 JAL3083 - Jul 21, 01:50 UTCJul 21, 02:25 UTC35m
2026-07-20 JAL3082 - Jul 20, 23:40 UTCJul 21, 00:25 UTC45m
2026-07-20 JAL841 NGO → TSN Jul 20, 01:55 UTCJul 20, 08:30 UTC6h 35m
2026-07-19 JAL201 HND → NGO Jul 19, 23:35 UTCJul 20, 00:00 UTC25m
2026-07-19 JAL208 NGO → HND Jul 19, 12:15 UTCJul 19, 12:50 UTC35m
2026-07-19 JAL3087 - Jul 19, 10:20 UTCJul 19, 11:00 UTC40m
2026-07-19 JAL802 TPE → NRT Jul 19, 02:40 UTCJul 19, 05:40 UTC3h 0m
2026-07-18 JAL809 - Jul 18, 12:05 UTCJul 18, 12:20 UTC15m
2026-07-18 JAL809 - Jul 18, 09:35 UTCJul 18, 10:45 UTC1h 10m
2026-07-18 JAL3084 - Jul 18, 05:55 UTCJul 18, 06:45 UTC50m
2026-07-18 JAL3083 - Jul 18, 02:00 UTCJul 18, 02:35 UTC35m
2026-07-17 JAL3082 - Jul 17, 23:39 UTCJul 18, 00:19 UTC40m
2026-07-17 JAL841 NGO → TSN Jul 17, 02:10 UTCJul 17, 08:35 UTC6h 25m
2026-07-16 JAL201 - Jul 16, 23:49 UTCJul 17, 00:20 UTC30m
2026-07-16 JAL208 - Jul 16, 12:49 UTCJul 16, 13:40 UTC50m
2026-07-16 JAL3087 - Jul 16, 11:05 UTCJul 16, 11:30 UTC25m
2026-07-16 JAL802 - Jul 16, 04:35 UTCJul 16, 06:05 UTC1h 30m
2026-07-16 JAL802 - Jul 16, 03:00 UTCJul 16, 03:10 UTC10m
2026-07-15 JAL809 - Jul 15, 12:05 UTCJul 15, 12:30 UTC25m
2026-07-15 JAL809 - Jul 15, 09:35 UTCJul 15, 10:50 UTC1h 15m
2026-07-15 JAL3084 - Jul 15, 05:50 UTCJul 15, 06:45 UTC55m
2026-07-15 JAL3083 - Jul 15, 01:50 UTCJul 15, 02:25 UTC35m
2026-07-14 JAL3082 - Jul 14, 23:35 UTCJul 15, 00:20 UTC45m
2026-07-14 JAL8670 - Jul 14, 06:35 UTCJul 14, 08:50 UTC2h 15m
2026-07-14 JAL8671 - Jul 14, 02:25 UTCJul 14, 04:45 UTC2h 20m
2026-07-13 JAL201 - Jul 13, 23:40 UTCJul 14, 00:10 UTC30m
2026-07-13 JAL159 - Jul 13, 08:55 UTCJul 13, 11:50 UTC2h 55m
2026-07-13 JAL20 - Jul 13, 01:45 UTCJul 13, 03:45 UTC2h 0m
2026-07-12 JAL25 - Jul 12, 08:01 UTCJul 12, 09:50 UTC1h 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 JA304J page for operator, model, and routing details .

Mode-S 850DF2 frequently asked

What is Mode-S code 850DF2?
850DF2 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA304J.
Where is Mode-S 850DF2 registered?
Mode-S code 850DF2 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 850DF2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 850DF2, octal 41206762, decimal 8,719,858.
What flights does 850DF2 operate?
Mode-S 850DF2 has broadcast 20 distinct callsigns, including JAL809, JAL802, JAL8671, JAL208, JAL89.