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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 Jul 26, 10:10 UTC
Flights observed
236
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 10:10 UTC

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 - 23 2026-07-12
JAL20 Japan Airlines 23 2026-07-25
JAL802 - 22 2026-07-13
JAL25 Japan Airlines 19 2026-07-26
JAL158 Japan Airlines 11 2026-06-08
JAL8671 Japan Airlines 10 2026-06-04
JAL3087 - 10 2026-07-13
JAL208 - 10 2026-07-13
JAL159 - 10 2026-07-10
JAL153 - 10 2026-07-13
JAL8670 Japan Airlines 9 2026-06-04
JAL3084 - 9 2026-07-12
JAL3082 - 9 2026-07-11
JAL201 - 9 2026-07-10
JAL3083 - 8 2026-07-12
JAL80 Japan Airlines 7 2026-07-22
JAL89 Japan Airlines 6 2026-07-25
JAL152 - 5 2026-07-09
JAL841 - 3 2026-07-06
JL8671 Japan Airlines 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL25 HND → PEK Jul 26, 08:15 UTCJul 26, 10:10 UTC1h 55m
2026-07-25 JAL89 HNL → HND Jul 25, 09:05 UTCJul 26, 04:00 UTC18h 55m
2026-07-25 JAL20 PEK → HND Jul 25, 03:15 UTCJul 25, 05:25 UTC2h 10m
2026-07-24 JAL25 HND → PEK Jul 24, 10:00 UTCJul 24, 11:55 UTC1h 55m
2026-07-23 JAL89 HNL → HND Jul 23, 08:50 UTCJul 24, 03:50 UTC19h 0m
2026-07-22 JAL80 HND → HNL Jul 22, 10:20 UTCJul 23, 04:10 UTC17h 50m
2026-07-21 JAL89 HNL → HND Jul 21, 08:45 UTCJul 22, 03:50 UTC19h 5m
2026-07-21 JAL20 PEK → HND Jul 21, 01:50 UTCJul 21, 03:50 UTC2h 0m
2026-07-21 JAL20 PEK → HND Jul 21, 00:55 UTCJul 21, 01:05 UTC10m
2026-07-20 JAL25 - Jul 20, 08:00 UTCJul 20, 10:00 UTC2h 0m
2026-07-19 JAL80 HND → HNL Jul 19, 08:35 UTCJul 20, 04:00 UTC19h 25m
2026-07-19 JAL20 PEK → HND Jul 19, 01:35 UTCJul 19, 03:45 UTC2h 10m
2026-07-18 JAL25 - Jul 18, 08:00 UTCJul 18, 10:05 UTC2h 5m
2026-07-17 JAL80 HND → HND Jul 17, 08:40 UTCJul 18, 04:00 UTC19h 21m
2026-07-17 JAL20 PEK → HND Jul 17, 01:35 UTCJul 17, 03:45 UTC2h 10m
2026-07-16 JAL25 - Jul 16, 11:15 UTCJul 16, 11:25 UTC10m
2026-07-16 JAL25 - Jul 16, 08:00 UTCJul 16, 10:04 UTC2h 5m
2026-07-16 JAL20 - Jul 16, 01:40 UTCJul 16, 03:50 UTC2h 10m
2026-07-15 JAL25 - Jul 15, 08:20 UTCJul 15, 10:25 UTC2h 5m
2026-07-15 JAL20 - Jul 15, 01:40 UTCJul 15, 03:45 UTC2h 5m
2026-07-14 JAL25 - Jul 14, 07:50 UTCJul 14, 09:40 UTC1h 50m
2026-07-13 JAL153 HND → HND Jul 13, 23:20 UTCJul 14, 02:25 UTC3h 5m
2026-07-13 JAL208 - Jul 13, 12:40 UTCJul 13, 13:15 UTC35m
2026-07-13 JAL3087 - Jul 13, 10:15 UTCJul 13, 10:40 UTC25m
2026-07-13 JAL802 - Jul 13, 03:01 UTCJul 13, 06:01 UTC3h 0m
2026-07-12 JAL809 NRT → TPE Jul 12, 09:35 UTCJul 12, 12:40 UTC3h 5m
2026-07-12 JAL3084 - Jul 12, 05:55 UTCJul 12, 06:40 UTC45m
2026-07-12 JAL3083 - Jul 12, 01:55 UTCJul 12, 02:25 UTC30m
2026-07-11 JAL3082 - Jul 11, 23:40 UTCJul 12, 00:30 UTC50m
2026-07-10 JAL201 - Jul 10, 23:30 UTCJul 11, 00:05 UTC35m
2026-07-10 JAL159 HND → HND Jul 10, 08:30 UTCJul 10, 11:25 UTC2h 55m
2026-07-09 JAL80 - Jul 9, 10:05 UTCJul 10, 04:15 UTC18h 10m
2026-07-09 JAL89 HND → HND Jul 9, 08:50 UTCJul 10, 04:15 UTC19h 25m
2026-07-09 JAL152 - Jul 9, 01:45 UTCJul 9, 02:15 UTC30m
2026-07-08 JAL153 - Jul 8, 23:15 UTCJul 8, 23:50 UTC35m
2026-07-08 JAL208 - Jul 8, 12:20 UTCJul 8, 12:55 UTC35m
2026-07-08 JAL3087 - Jul 8, 10:30 UTCJul 8, 11:05 UTC35m
2026-07-08 JAL802 TPE → NRT Jul 8, 02:50 UTCJul 8, 06:00 UTC3h 10m
2026-07-07 JAL809 - Jul 7, 09:30 UTCJul 7, 12:20 UTC2h 50m
2026-07-07 JAL3084 - Jul 7, 06:05 UTCJul 7, 06:55 UTC50m
2026-07-07 JAL3083 - Jul 7, 01:50 UTCJul 7, 02:15 UTC25m
2026-07-06 JAL3082 - Jul 6, 23:35 UTCJul 7, 00:15 UTC40m
2026-07-06 JAL841 - Jul 6, 03:00 UTCJul 6, 09:10 UTC6h 10m
2026-07-05 JAL201 HND → NGO Jul 5, 23:35 UTCJul 6, 00:05 UTC30m
2026-07-05 JAL159 HND → HND Jul 5, 08:35 UTCJul 5, 11:30 UTC2h 55m
2026-07-05 JAL152 - Jul 5, 01:40 UTCJul 5, 02:20 UTC40m
2026-07-04 JAL153 HND → MSJ Jul 4, 23:20 UTCJul 4, 23:55 UTC35m
2026-07-03 JAL8152 - Jul 3, 19:00 UTCJul 3, 20:30 UTC1h 30m
2026-06-08 JAL8151 - Jun 8, 18:00 UTCJun 8, 21:45 UTC3h 45m
2026-06-08 JAL158 MSJ → HND Jun 8, 08:35 UTCJun 8, 11:30 UTC2h 55m

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 Jul 26, 10:10 UTC.
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, JAL20, JAL802, JAL25, JAL158.