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 10h ago
Flights observed
307
Distinct callsigns
20
Country
JP
Last broadcast
10h 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 - 26 2026-07-14
JAL802 - 17 2026-07-14
JAL20 - 17 2026-07-06
JAL3084 - 16 2026-07-13
JAL3087 - 15 2026-07-11
JAL3083 - 15 2026-07-13
JAL3082 - 15 2026-07-12
JAL201 - 15 2026-07-11
JAL25 - 14 2026-07-05
JAL208 - 14 2026-07-11
JAL159 - 14 2026-07-07
JAL153 Japan Airlines 13 2026-07-07
JAL89 - 11 2026-07-01
JAL8671 - 11 2026-07-12
JAL8670 - 9 2026-07-12
JAL152 - 9 2026-06-28
JAL158 Japan Airlines 8 2026-06-09
JAL841 - 6 2026-06-26
JAL840 Japan Airlines 4 2026-05-25
JAL698 Japan Airlines 4 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JAL809 - Jul 14, 12:00 UTCJul 14, 12:25 UTC25m
2026-07-14 JAL809 - Jul 14, 09:35 UTCJul 14, 10:50 UTC1h 15m
2026-07-14 JAL802 - Jul 14, 03:10 UTCJul 14, 06:25 UTC3h 15m
2026-07-13 JAL809 NRT → TPE Jul 13, 09:45 UTCJul 13, 12:40 UTC2h 55m
2026-07-13 JAL3084 - Jul 13, 05:55 UTCJul 13, 06:45 UTC50m
2026-07-13 JAL3083 - Jul 13, 01:50 UTCJul 13, 02:20 UTC30m
2026-07-12 JAL3082 - Jul 12, 23:35 UTCJul 13, 00:25 UTC50m
2026-07-12 JAL8670 - Jul 12, 06:20 UTCJul 12, 08:35 UTC2h 15m
2026-07-12 JAL8671 - Jul 12, 04:05 UTCJul 12, 04:30 UTC25m
2026-07-12 JAL8671 - Jul 12, 02:10 UTCJul 12, 02:55 UTC45m
2026-07-11 JAL201 - Jul 11, 23:50 UTCJul 12, 00:20 UTC30m
2026-07-11 JAL208 - Jul 11, 12:20 UTCJul 11, 12:55 UTC35m
2026-07-11 JAL3087 - Jul 11, 10:25 UTCJul 11, 11:00 UTC35m
2026-07-10 JAL3084 - Jul 10, 05:55 UTCJul 10, 06:50 UTC55m
2026-07-10 JAL3083 - Jul 10, 01:55 UTCJul 10, 02:20 UTC25m
2026-07-09 JAL3082 - Jul 9, 23:35 UTCJul 10, 00:20 UTC45m
2026-07-09 JAL8670 - Jul 9, 06:50 UTCJul 9, 09:05 UTC2h 15m
2026-07-09 JAL8671 - Jul 9, 03:00 UTCJul 9, 05:25 UTC2h 25m
2026-07-09 JAL201 - Jul 9, 01:00 UTCJul 9, 01:35 UTC35m
2026-07-07 JAL153 HND → MSJ Jul 7, 23:20 UTCJul 8, 02:20 UTC3h 0m
2026-07-07 JAL159 HND → HND Jul 7, 08:25 UTCJul 7, 11:20 UTC2h 55m
2026-07-06 JAL153 HND → MSJ Jul 6, 23:20 UTCJul 7, 02:10 UTC2h 50m
2026-07-06 JAL159 HND → HND Jul 6, 08:45 UTCJul 6, 11:30 UTC2h 45m
2026-07-06 JAL20 - Jul 6, 01:55 UTCJul 6, 03:55 UTC2h 0m
2026-07-06 JAL20 - Jul 6, 00:55 UTCJul 6, 01:05 UTC10m
2026-07-05 JAL25 - Jul 5, 07:55 UTCJul 5, 10:00 UTC2h 5m
2026-07-05 JAL20 - Jul 5, 03:05 UTCJul 5, 04:55 UTC1h 50m
2026-07-05 JAL20 - Jul 5, 02:10 UTCJul 5, 02:20 UTC10m
2026-07-04 JAL25 - Jul 4, 09:35 UTCJul 4, 11:30 UTC1h 55m
2026-07-04 JAL20 - Jul 4, 03:35 UTCJul 4, 05:30 UTC1h 55m
2026-07-03 JAL25 - Jul 3, 09:40 UTCJul 3, 11:35 UTC1h 55m
2026-07-03 JAL20 - Jul 3, 01:40 UTCJul 3, 03:25 UTC1h 45m
2026-07-02 JAL25 - Jul 2, 08:15 UTCJul 2, 10:20 UTC2h 5m
2026-07-01 JAL89 - Jul 1, 09:05 UTCJul 2, 03:40 UTC18h 35m
2026-07-01 JAL89 HND → HND Jul 1, 08:55 UTCJul 2, 03:40 UTC18h 45m
2026-07-01 JAL20 - Jul 1, 02:30 UTCJul 1, 04:25 UTC1h 55m
2026-07-01 JAL20 - Jul 1, 01:35 UTCJul 1, 01:45 UTC10m
2026-06-30 JAL25 - Jun 30, 08:35 UTCJun 30, 10:45 UTC2h 10m
2026-06-29 JAL80 - Jun 29, 09:05 UTCJun 30, 04:25 UTC19h 21m
2026-06-29 JAL89 HND → HND Jun 29, 08:44 UTCJun 30, 04:25 UTC19h 41m
2026-06-29 JAL20 - Jun 29, 01:34 UTCJun 29, 03:29 UTC1h 55m
2026-06-29 JAL20 - Jun 29, 00:44 UTCJun 29, 00:54 UTC10m
2026-06-28 JAL25 - Jun 28, 08:05 UTCJun 28, 10:04 UTC2h 0m
2026-06-28 JAL152 - Jun 28, 01:55 UTCJun 28, 02:29 UTC35m
2026-06-27 JAL153 HND → MSJ Jun 27, 23:39 UTCJun 28, 00:09 UTC30m
2026-06-27 JAL208 - Jun 27, 12:39 UTCJun 27, 13:15 UTC35m
2026-06-27 JAL3087 - Jun 27, 11:00 UTCJun 27, 11:30 UTC30m
2026-06-27 JAL3084 - Jun 27, 05:59 UTCJun 27, 06:54 UTC55m
2026-06-27 JAL3083 - Jun 27, 01:44 UTCJun 27, 02:20 UTC35m
2026-06-26 JAL3082 - Jun 26, 23:30 UTCJun 27, 00:34 UTC1h 5m

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 10h 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, JAL20, JAL3084, JAL3087.