Apparatus

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sensors Mode-S transponder

8511A8

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA315J · BOEING 737-800

Hex
8511A8
Octal
41210650
Decimal
8,720,808
Country
JP
Tail
JA315J
Type
B738
No current signal · last broadcast 4h ago
Flights observed
161
Distinct callsigns
20
Country
JP
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 8511A8.

Country allocation

The ICAO 24-bit address 8511A8 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 18 2026-05-28
JAL802 Japan Airlines 17 2026-05-29
JAL20 Japan Airlines 16 2026-05-14
JAL25 Japan Airlines 11 2026-05-04
JAL158 Japan Airlines 9 2026-05-25
JAL8671 Japan Airlines 8 2026-05-30
JAL159 Japan Airlines 8 2026-05-25
JAL8670 Japan Airlines 7 2026-05-30
JAL3087 Japan Airlines 6 2026-05-29
JAL3084 Japan Airlines 6 2026-05-27
JAL208 Japan Airlines 6 2026-05-29
JAL201 Japan Airlines 6 2026-05-29
JAL3083 Japan Airlines 5 2026-05-27
JAL3082 Japan Airlines 5 2026-05-26
JAL153 Japan Airlines 5 2026-05-23
JAL80 Japan Airlines 3 2026-05-16
JL8671 Japan Airlines 2 2026-05-17
JAL89 Japan Airlines 2 2026-05-13
JAL841 Japan Airlines 2 2026-05-22
JAL374 Japan Airlines 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 JAL8670 TPE → NGO May 30, 06:25 UTCMay 30, 08:40 UTC2h 15m
2026-05-30 JAL8671 NGO → TPE May 30, 04:30 UTCMay 30, 04:50 UTC20m
2026-05-30 JAL8671 NGO → TPE May 30, 02:20 UTCMay 30, 03:00 UTC40m
2026-05-29 JAL201 HND → NGO May 29, 23:40 UTCMay 30, 00:10 UTC30m
2026-05-29 JAL208 NGO → HND May 29, 12:15 UTCMay 29, 12:50 UTC35m
2026-05-29 JAL3087 NRT → NGO May 29, 10:30 UTCMay 29, 10:55 UTC25m
2026-05-29 JAL802 TPE → NRT May 29, 02:55 UTCMay 29, 05:45 UTC2h 50m
2026-05-28 JAL809 NRT → TPE May 28, 12:05 UTCMay 28, 12:30 UTC25m
2026-05-28 JAL809 NRT → TPE May 28, 09:30 UTCMay 28, 10:45 UTC1h 15m
2026-05-28 JAL802 TPE → NRT May 28, 04:25 UTCMay 28, 05:45 UTC1h 20m
2026-05-28 JAL802 TPE → NRT May 28, 02:45 UTCMay 28, 03:00 UTC15m
2026-05-27 JAL809 NRT → TPE May 27, 12:45 UTCMay 27, 13:05 UTC20m
2026-05-27 JAL809 NRT → TPE May 27, 10:10 UTCMay 27, 11:20 UTC1h 10m
2026-05-27 JAL3084 NGO → NRT May 27, 05:49 UTCMay 27, 06:44 UTC55m
2026-05-27 JAL3083 NRT → NGO May 27, 01:44 UTCMay 27, 02:24 UTC40m
2026-05-26 JAL3082 NGO → NRT May 26, 23:35 UTCMay 27, 00:14 UTC40m
2026-05-26 JAL8670 TPE → NGO May 26, 08:10 UTCMay 26, 08:24 UTC15m
2026-05-26 JAL8670 TPE → NGO May 26, 06:10 UTCMay 26, 06:29 UTC20m
2026-05-26 JAL8671 NGO → TPE May 26, 02:04 UTCMay 26, 04:30 UTC2h 25m
2026-05-25 JAL201 HND → NGO May 25, 23:40 UTCMay 26, 00:09 UTC30m
2026-05-25 JAL158 MSJ → HND May 25, 11:20 UTCMay 25, 11:55 UTC35m
2026-05-25 JAL159 HND → MSJ May 25, 09:10 UTCMay 25, 09:40 UTC30m
2026-05-25 JAL664 OIT → HND May 25, 02:10 UTCMay 25, 03:15 UTC1h 5m
2026-05-24 JAL661 HND → OIT May 24, 23:35 UTCMay 24, 23:46 UTC11m
2026-05-24 JAL158 MSJ → HND May 24, 11:00 UTCMay 24, 11:40 UTC40m
2026-05-24 JAL159 HND → MSJ May 24, 08:50 UTCMay 24, 09:20 UTC30m
2026-05-23 JAL153 HND → MSJ May 23, 23:30 UTCMay 24, 02:35 UTC3h 5m
2026-05-23 JAL208 NGO → HND May 23, 12:15 UTCMay 23, 12:45 UTC30m
2026-05-23 JAL3087 NRT → NGO May 23, 10:20 UTCMay 23, 10:55 UTC35m
2026-05-23 JAL3084 NGO → NRT May 23, 05:55 UTCMay 23, 06:40 UTC45m
2026-05-23 JAL3083 NRT → NGO May 23, 01:50 UTCMay 23, 02:25 UTC35m
2026-05-22 JAL3082 NGO → NRT May 22, 23:40 UTCMay 23, 00:20 UTC40m
2026-05-22 JAL841 NGO → TSN May 22, 02:00 UTCMay 22, 08:40 UTC6h 40m
2026-05-22 JAL201 HND → NGO May 22, 00:00 UTCMay 22, 00:30 UTC30m
2026-05-21 JAL208 NGO → HND May 21, 12:15 UTCMay 21, 12:45 UTC30m
2026-05-21 JAL3087 NRT → NGO May 21, 10:20 UTCMay 21, 11:00 UTC40m
2026-05-21 JAL802 TPE → NRT May 21, 03:55 UTCMay 21, 06:45 UTC2h 50m
2026-05-20 JAL809 NRT → TPE May 20, 14:20 UTCMay 20, 14:40 UTC20m
2026-05-20 JAL809 NRT → TPE May 20, 11:40 UTCMay 20, 12:50 UTC1h 10m
2026-05-20 JAL802 TPE → NRT May 20, 02:50 UTCMay 20, 05:50 UTC3h 1m
2026-05-19 JAL809 NRT → TPE May 19, 12:10 UTCMay 19, 12:25 UTC15m
2026-05-19 JAL809 NRT → TPE May 19, 09:35 UTCMay 19, 10:45 UTC1h 10m
2026-05-19 JAL802 TPE → NRT May 19, 02:40 UTCMay 19, 05:50 UTC3h 10m
2026-05-18 JAL809 NRT → TPE May 18, 09:35 UTCMay 18, 12:30 UTC2h 55m
2026-05-18 JAL3084 NGO → NRT May 18, 05:50 UTCMay 18, 06:40 UTC50m
2026-05-18 JAL3083 NRT → NGO May 18, 01:50 UTCMay 18, 02:25 UTC35m
2026-05-17 JAL3082 NGO → NRT May 17, 23:30 UTCMay 18, 00:20 UTC50m
2026-05-17 JAL8670 TPE → NGO May 17, 08:20 UTCMay 17, 08:40 UTC20m
2026-05-17 JAL8670 TPE → NGO May 17, 06:20 UTCMay 17, 06:30 UTC10m
2026-05-17 JL8671 NGO → TPE May 17, 04:00 UTCMay 17, 04:30 UTC30m

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 JA315J page for operator, model, and routing details .

Mode-S 8511A8 frequently asked

What is Mode-S code 8511A8?
8511A8 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA315J.
Where is Mode-S 8511A8 registered?
Mode-S code 8511A8 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8511A8 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8511A8, octal 41210650, decimal 8,720,808.
What flights does 8511A8 operate?
Mode-S 8511A8 has broadcast 20 distinct callsigns, including JAL809, JAL802, JAL20, JAL25, JAL158.