Apparatus

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sensors Mode-S transponder

8511EC

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA317J · BOEING 737-800

Hex
8511EC
Octal
41210754
Decimal
8,720,876
Country
JP
Tail
JA317J
Type
B738
No current signal · last broadcast 8h ago
Flights observed
184
Distinct callsigns
20
Country
JP
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 8511EC.

Country allocation

The ICAO 24-bit address 8511EC 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 16 2026-05-26
JAL802 Japan Airlines 11 2026-05-27
JAL3087 Japan Airlines 11 2026-05-28
JAL3084 Japan Airlines 11 2026-05-28
JAL3083 Japan Airlines 10 2026-05-28
JAL3082 Japan Airlines 10 2026-05-27
JAL208 Japan Airlines 10 2026-05-28
JAL201 Japan Airlines 10 2026-05-24
JAL8671 Japan Airlines 7 2026-05-21
JAL8670 Japan Airlines 5 2026-05-21
JAL153 Japan Airlines 5 2026-05-29
JAL841 Japan Airlines 4 2026-05-18
JAL840 Japan Airlines 4 2026-05-25
JAL698 Japan Airlines 4 2026-05-29
JAL695 Japan Airlines 4 2026-05-29
JAL630 Japan Airlines 4 2026-05-29
JAL629 Japan Airlines 4 2026-05-29
JAL25 Japan Airlines 4 2026-05-12
JAL242 Japan Airlines 4 2026-05-30
JAL239 Japan Airlines 4 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 JAL242 OKJ → HND May 30, 11:20 UTCMay 30, 12:20 UTC1h 0m
2026-05-30 JAL239 HND → OKJ May 30, 09:30 UTCMay 30, 10:20 UTC50m
2026-05-30 JAL542 KUH → HND May 30, 06:20 UTCMay 30, 07:50 UTC1h 30m
2026-05-30 JAL543 HND → KUH May 30, 04:10 UTCMay 30, 05:10 UTC1h 0m
2026-05-29 JAL153 HND → MSJ May 29, 23:40 UTCMay 30, 02:50 UTC3h 10m
2026-05-29 JAL698 KMI → HND May 29, 11:50 UTCMay 29, 12:35 UTC45m
2026-05-29 JAL695 HND → KMI May 29, 09:05 UTCMay 29, 10:05 UTC1h 0m
2026-05-29 JAL630 KMJ → HND May 29, 06:35 UTCMay 29, 07:30 UTC55m
2026-05-29 JAL629 HND → KMJ May 29, 03:40 UTCMay 29, 05:10 UTC1h 30m
2026-05-28 JAL213 HND → SHM May 28, 23:10 UTCMay 29, 01:40 UTC2h 30m
2026-05-28 JAL208 NGO → HND May 28, 12:15 UTCMay 28, 13:05 UTC50m
2026-05-28 JAL3087 NRT → NGO May 28, 10:20 UTCMay 28, 11:00 UTC40m
2026-05-28 JAL3084 NGO → NRT May 28, 06:00 UTCMay 28, 06:40 UTC40m
2026-05-28 JAL3083 NRT → NGO May 28, 01:45 UTCMay 28, 02:25 UTC40m
2026-05-27 JAL3082 NGO → NRT May 27, 23:30 UTCMay 28, 00:20 UTC50m
2026-05-27 JAL3087 NRT → NGO May 27, 10:25 UTCMay 27, 11:00 UTC35m
2026-05-27 JAL802 TPE → NRT May 27, 02:59 UTCMay 27, 06:04 UTC3h 5m
2026-05-26 JAL809 NRT → TPE May 26, 12:10 UTCMay 26, 12:35 UTC25m
2026-05-26 JAL809 NRT → TPE May 26, 09:35 UTCMay 26, 10:44 UTC1h 10m
2026-05-26 JAL3084 NGO → NRT May 26, 05:49 UTCMay 26, 06:39 UTC50m
2026-05-26 JAL3083 NRT → NGO May 26, 01:44 UTCMay 26, 02:24 UTC40m
2026-05-25 JAL3082 NGO → NRT May 25, 23:35 UTCMay 26, 00:19 UTC45m
2026-05-25 JAL840 TSN → NGO May 25, 01:55 UTCMay 25, 08:30 UTC6h 35m
2026-05-24 JAL201 HND → NGO May 24, 23:35 UTCMay 24, 23:46 UTC11m
2026-05-24 JAL242 OKJ → HND May 24, 10:45 UTCMay 24, 11:40 UTC55m
2026-05-24 JAL239 HND → OKJ May 24, 09:00 UTCMay 24, 09:50 UTC50m
2026-05-24 JAL146 AOJ → HND May 24, 06:30 UTCMay 24, 07:30 UTC1h 0m
2026-05-24 JAL145 HND → AOJ May 24, 04:30 UTCMay 24, 05:25 UTC55m
2026-05-24 JAL690 KMI → HND May 24, 02:00 UTCMay 24, 03:05 UTC1h 5m
2026-05-23 JAL687 HND → KMI May 23, 23:20 UTCMay 24, 00:20 UTC1h 0m
2026-05-23 JAL159 HND → MSJ May 23, 08:35 UTCMay 23, 11:25 UTC2h 50m
2026-05-23 JAL374 KKJ → HND May 23, 01:35 UTCMay 23, 02:35 UTC59m
2026-05-22 JAL373 HND → KKJ May 22, 23:20 UTCMay 23, 00:25 UTC1h 5m
2026-05-22 JAL208 NGO → HND May 22, 12:30 UTCMay 22, 13:00 UTC30m
2026-05-22 JAL3087 NRT → NGO May 22, 10:45 UTCMay 22, 11:20 UTC34m
2026-05-22 JAL3084 NGO → NRT May 22, 05:55 UTCMay 22, 06:45 UTC50m
2026-05-22 JAL3083 NRT → NGO May 22, 01:45 UTCMay 22, 02:25 UTC40m
2026-05-21 JAL3082 NGO → NRT May 21, 23:35 UTCMay 22, 00:20 UTC45m
2026-05-21 JAL8670 TPE → NGO May 21, 06:25 UTCMay 21, 08:40 UTC2h 15m
2026-05-21 JAL8671 NGO → TPE May 21, 04:45 UTCMay 21, 05:05 UTC20m
2026-05-21 JAL8671 NGO → TPE May 21, 02:30 UTCMay 21, 03:10 UTC40m
2026-05-20 JAL201 HND → NGO May 20, 23:35 UTCMay 21, 00:10 UTC35m
2026-05-20 JAL566 MMB → HND May 20, 11:05 UTCMay 20, 12:40 UTC1h 35m
2026-05-20 JAL569 HND → MMB May 20, 08:50 UTCMay 20, 10:20 UTC1h 30m
2026-05-20 JAL482 TAK → HND May 20, 06:40 UTCMay 20, 07:40 UTC1h 0m
2026-05-20 JAL481 HND → TAK May 20, 04:45 UTCMay 20, 05:40 UTC55m
2026-05-20 JAL152 MSJ → HND May 20, 01:55 UTCMay 20, 02:30 UTC35m
2026-05-19 JAL153 HND → MSJ May 19, 23:40 UTCMay 20, 00:15 UTC35m
2026-05-19 JAL208 NGO → HND May 19, 12:10 UTCMay 19, 12:40 UTC30m
2026-05-19 JAL3087 NRT → NGO May 19, 10:20 UTCMay 19, 10:50 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 JA317J page for operator, model, and routing details .

Mode-S 8511EC frequently asked

What is Mode-S code 8511EC?
8511EC is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA317J.
Where is Mode-S 8511EC registered?
Mode-S code 8511EC is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8511EC broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8511EC, octal 41210754, decimal 8,720,876.
What flights does 8511EC operate?
Mode-S 8511EC has broadcast 20 distinct callsigns, including JAL809, JAL802, JAL3087, JAL3084, JAL3083.