Apparatus

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sensors Mode-S transponder

846DC8

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA15JJ · AIRBUS A-320

Hex
846DC8
Octal
41066710
Decimal
8,678,856
Country
JP
Tail
JA15JJ
Type
A320
No current signal · last broadcast 3h ago
Flights observed
471
Distinct callsigns
20
Country
JP
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 846DC8.

Country allocation

The ICAO 24-bit address 846DC8 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
JJP351 - 21 2026-07-14
JJP357 - 18 2026-07-14
JJP211 - 15 2026-07-13
JJP508 - 14 2026-07-13
JJP238 - 14 2026-07-14
JJP511 - 13 2026-07-13
JJP82 - 12 2026-07-13
JJP81 - 12 2026-07-13
JJP13 - 12 2026-06-27
JJP17 - 11 2026-06-21
JJP501 - 10 2026-07-10
JJP358 - 10 2026-07-14
JJP500 - 9 2026-07-11
JJP352 - 9 2026-07-14
JJP27 - 9 2026-06-21
JJP611 - 8 2026-07-09
JJP18 - 8 2026-06-21
JJP14 - 8 2026-06-27
JJP612 - 7 2026-07-10
JJP449 - 7 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JJP238 KIX → NRT Jul 14, 12:25 UTCJul 14, 13:30 UTC1h 5m
2026-07-14 JJP358 - Jul 14, 09:45 UTCJul 14, 11:25 UTC1h 40m
2026-07-14 JJP357 - Jul 14, 08:10 UTCJul 14, 08:30 UTC20m
2026-07-14 JJP357 - Jul 14, 06:55 UTCJul 14, 07:30 UTC35m
2026-07-14 JJP352 - Jul 14, 03:50 UTCJul 14, 05:40 UTC1h 50m
2026-07-14 JJP351 - Jul 14, 02:10 UTCJul 14, 02:25 UTC15m
2026-07-14 JJP351 - Jul 14, 00:50 UTCJul 14, 01:30 UTC40m
2026-07-13 JJP82 MNL → KIX Jul 13, 19:20 UTCJul 13, 22:40 UTC3h 20m
2026-07-13 JJP81 KIX → MNL Jul 13, 13:55 UTCJul 13, 17:20 UTC3h 25m
2026-07-13 JJP211 NRT → KIX Jul 13, 11:00 UTCJul 13, 11:55 UTC55m
2026-07-13 JJP508 - Jul 13, 08:20 UTCJul 13, 09:55 UTC1h 35m
2026-07-13 JJP511 - Jul 13, 05:35 UTCJul 13, 06:55 UTC1h 20m
2026-07-13 JJP640 - Jul 13, 02:50 UTCJul 13, 04:25 UTC1h 35m
2026-07-13 JJP645 - Jul 13, 00:10 UTCJul 13, 01:45 UTC1h 35m
2026-07-12 JJP238 KIX → NRT Jul 12, 12:10 UTCJul 12, 13:15 UTC1h 5m
2026-07-12 JJP358 - Jul 12, 09:40 UTCJul 12, 11:15 UTC1h 35m
2026-07-12 JJP357 - Jul 12, 07:55 UTCJul 12, 08:15 UTC20m
2026-07-12 JJP357 - Jul 12, 06:40 UTCJul 12, 07:15 UTC35m
2026-07-12 JJP352 - Jul 12, 03:50 UTCJul 12, 05:30 UTC1h 40m
2026-07-12 JJP351 - Jul 12, 02:15 UTCJul 12, 02:30 UTC15m
2026-07-12 JJP351 - Jul 12, 00:55 UTCJul 12, 01:35 UTC40m
2026-07-11 JJP82 - Jul 11, 19:20 UTCJul 11, 22:50 UTC3h 30m
2026-07-11 JJP81 - Jul 11, 17:00 UTCJul 11, 17:40 UTC40m
2026-07-11 JJP81 - Jul 11, 14:00 UTCJul 11, 15:35 UTC1h 35m
2026-07-11 JJP211 NRT → KIX Jul 11, 10:40 UTCJul 11, 11:50 UTC1h 10m
2026-07-11 JJP508 - Jul 11, 07:45 UTCJul 11, 09:20 UTC1h 35m
2026-07-11 JJP511 - Jul 11, 04:40 UTCJul 11, 05:50 UTC1h 10m
2026-07-11 JJP500 - Jul 11, 02:00 UTCJul 11, 03:35 UTC1h 35m
2026-07-10 JJP501 - Jul 10, 23:05 UTCJul 11, 00:15 UTC1h 10m
2026-07-10 JJP120 CTS → NRT Jul 10, 12:15 UTCJul 10, 13:25 UTC1h 10m
2026-07-10 JJP119 - Jul 10, 09:35 UTCJul 10, 10:55 UTC1h 20m
2026-07-10 JJP631 - Jul 10, 03:45 UTCJul 10, 07:50 UTC4h 5m
2026-07-10 JJP612 - Jul 10, 01:10 UTCJul 10, 02:35 UTC1h 25m
2026-07-09 JJP611 - Jul 9, 22:40 UTCJul 10, 00:05 UTC1h 25m
2026-07-09 JJP528 - Jul 9, 12:00 UTCJul 9, 13:35 UTC1h 35m
2026-07-09 JJP984 - Jul 9, 08:50 UTCJul 9, 10:40 UTC1h 50m
2026-07-09 JJP115 - Jul 9, 06:15 UTCJul 9, 07:35 UTC1h 20m
2026-07-09 JJP128 - Jul 9, 03:30 UTCJul 9, 04:40 UTC1h 10m
2026-07-09 JJP127 - Jul 9, 01:10 UTCJul 9, 02:35 UTC1h 25m
2026-07-08 JJP230 KIX → NRT Jul 8, 22:50 UTCJul 9, 00:00 UTC1h 10m
2026-07-08 JJP50 - Jul 8, 18:35 UTCJul 8, 20:50 UTC2h 15m
2026-07-08 JJP57 KIX → TPE Jul 8, 14:50 UTCJul 8, 17:15 UTC2h 25m
2026-07-08 JJP54 TPE → KIX Jul 8, 10:30 UTCJul 8, 12:55 UTC2h 25m
2026-07-08 JJP55 KIX → TPE Jul 8, 06:40 UTCJul 8, 09:10 UTC2h 30m
2026-07-08 JJP215 NRT → KIX Jul 8, 03:20 UTCJul 8, 04:30 UTC1h 10m
2026-07-08 JJP102 - Jul 8, 00:50 UTCJul 8, 02:05 UTC1h 15m
2026-07-07 JJP103 - Jul 7, 22:20 UTCJul 7, 23:40 UTC1h 20m
2026-07-07 JJP238 KIX → NRT Jul 7, 12:35 UTCJul 7, 13:30 UTC55m
2026-07-07 JJP358 - Jul 7, 09:40 UTCJul 7, 11:25 UTC1h 45m
2026-07-07 JJP357 - Jul 7, 08:10 UTCJul 7, 08:25 UTC15m

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 JA15JJ page for operator, model, and routing details .

Mode-S 846DC8 frequently asked

What is Mode-S code 846DC8?
846DC8 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA15JJ.
Where is Mode-S 846DC8 registered?
Mode-S code 846DC8 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 846DC8 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 846DC8, octal 41066710, decimal 8,678,856.
What flights does 846DC8 operate?
Mode-S 846DC8 has broadcast 20 distinct callsigns, including JJP351, JJP357, JJP211, JJP508, JJP238.