Apparatus

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sensors Mode-S transponder

846D0C

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA15AN · BOEING 737-700

Hex
846D0C
Octal
41066414
Decimal
8,678,668
Country
JP
Tail
JA15AN
Type
B737
Transponder active on ground
Flights observed
551
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 846D0C.

Country allocation

The ICAO 24-bit address 846D0C 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
ADO80 Hokkaido International Airlines 21 2026-07-21
ADO79 Hokkaido International Airlines 20 2026-07-21
ADO18 Hokkaido International Airlines 18 2026-07-23
ADO66 Hokkaido International Airlines 17 2026-07-21
ADO62 Hokkaido International Airlines 17 2026-07-21
ADO61 Hokkaido International Airlines 17 2026-07-26
ADO101 Hokkaido International Airlines 17 2026-07-23
ADO25 Hokkaido International Airlines 16 2026-07-23
ADO78 - 15 2026-07-18
ADO67 - 15 2026-07-16
ADO65 Hokkaido International Airlines 15 2026-07-21
ADO77 - 14 2026-07-18
ADO74 - 14 2026-07-18
ADO68 - 14 2026-07-16
ADO58 - 14 2026-07-18
ADO57 - 14 2026-07-17
ADO43 - 14 2026-07-22
ADO73 - 13 2026-07-18
ADO28 Hokkaido International Airlines 13 2026-07-23
ADO121 Hokkaido International Airlines 13 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ADO61 HND → OBO Jul 26, 22:20 UTCJul 26, 23:00 UTC40m
2026-07-26 ADO44 CTS → HND Jul 26, 13:00 UTCJul 26, 14:20 UTC1h 20m
2026-07-26 ADO121 UKB → CTS Jul 26, 10:30 UTCJul 26, 12:05 UTC1h 35m
2026-07-26 ADO120 CTS → UKB Jul 26, 08:00 UTCJul 26, 09:45 UTC1h 45m
2026-07-26 ADO107 SDJ → CTS Jul 26, 06:15 UTCJul 26, 06:50 UTC36m
2026-07-26 ADO106 CTS → SDJ Jul 26, 04:15 UTCJul 26, 04:55 UTC40m
2026-07-26 ADO119 UKB → CTS Jul 26, 01:35 UTCJul 26, 03:10 UTC1h 35m
2026-07-25 ADO118 CTS → UKB Jul 25, 23:00 UTCJul 26, 00:40 UTC1h 40m
2026-07-25 ADO113 FUK → CTS Jul 25, 02:50 UTCJul 25, 04:55 UTC2h 5m
2026-07-24 ADO112 CTS → FUK Jul 24, 23:45 UTCJul 25, 01:30 UTC1h 45m
2026-07-24 ADO111 SDJ → CTS Jul 24, 11:05 UTCJul 24, 12:00 UTC55m
2026-07-24 ADO110 CTS → SDJ Jul 24, 09:20 UTCJul 24, 10:05 UTC45m
2026-07-24 ADO135 NGO → CTS Jul 24, 06:55 UTCJul 24, 08:20 UTC1h 25m
2026-07-24 ADO128 HKD → NGO Jul 24, 04:35 UTCJul 24, 05:45 UTC1h 10m
2026-07-24 ADO127 NGO → HKD Jul 24, 02:30 UTCJul 24, 03:45 UTC1h 15m
2026-07-24 ADO130 CTS → NGO Jul 24, 00:05 UTCJul 24, 01:20 UTC1h 15m
2026-07-23 ADO37 HND → CTS Jul 23, 11:30 UTCJul 23, 12:50 UTC1h 20m
2026-07-23 ADO28 CTS → HND Jul 23, 07:35 UTCJul 23, 08:55 UTC1h 20m
2026-07-23 ADO25 HND → CTS Jul 23, 05:15 UTCJul 23, 06:40 UTC1h 25m
2026-07-23 ADO18 CTS → HND Jul 23, 02:35 UTCJul 23, 03:50 UTC1h 15m
2026-07-23 ADO101 SDJ → CTS Jul 23, 00:55 UTCJul 23, 01:40 UTC45m
2026-07-22 ADO100 CTS → SDJ Jul 22, 23:00 UTCJul 22, 23:45 UTC45m
2026-07-22 ADO43 - Jul 22, 12:40 UTCJul 22, 13:50 UTC1h 10m
2026-07-22 ADO72 KUH → HND Jul 22, 01:10 UTCJul 22, 02:25 UTC1h 15m
2026-07-21 ADO71 - Jul 21, 22:55 UTCJul 22, 00:00 UTC1h 5m
2026-07-21 ADO80 MMB → HND Jul 21, 10:20 UTCJul 21, 11:50 UTC1h 30m
2026-07-21 ADO79 HND → MMB Jul 21, 08:00 UTCJul 21, 09:25 UTC1h 25m
2026-07-21 ADO66 OBO → HND Jul 21, 05:15 UTCJul 21, 06:35 UTC1h 20m
2026-07-21 ADO65 HND → OBO Jul 21, 03:05 UTCJul 21, 04:10 UTC1h 5m
2026-07-21 ADO62 OBO → HND Jul 21, 00:25 UTCJul 21, 01:40 UTC1h 15m
2026-07-20 ADO61 HND → OBO Jul 20, 22:20 UTCJul 20, 23:25 UTC1h 5m
2026-07-20 ADO44 - Jul 20, 12:50 UTCJul 20, 14:20 UTC1h 30m
2026-07-20 ADO121 - Jul 20, 10:15 UTCJul 20, 11:45 UTC1h 30m
2026-07-20 ADO120 CTS → UKB Jul 20, 07:45 UTCJul 20, 09:25 UTC1h 40m
2026-07-20 ADO107 SDJ → CTS Jul 20, 05:45 UTCJul 20, 06:40 UTC55m
2026-07-20 HD106 CTS → SDJ Jul 20, 04:05 UTCJul 20, 04:50 UTC45m
2026-07-20 ADO119 UKB → CTS Jul 20, 01:30 UTCJul 20, 03:05 UTC1h 35m
2026-07-19 ADO118 CTS → UKB Jul 19, 23:05 UTCJul 20, 00:40 UTC1h 35m
2026-07-19 ADO111 - Jul 19, 10:40 UTCJul 19, 11:35 UTC55m
2026-07-19 ADO110 CTS → SDJ Jul 19, 09:05 UTCJul 19, 09:45 UTC40m
2026-07-19 ADO135 NGO → CTS Jul 19, 06:45 UTCJul 19, 08:05 UTC1h 20m
2026-07-19 ADO128 HKD → NGO Jul 19, 04:25 UTCJul 19, 05:35 UTC1h 10m
2026-07-19 ADO127 NGO → HKD Jul 19, 02:30 UTCJul 19, 03:35 UTC1h 5m
2026-07-19 ADO130 CTS → NGO Jul 19, 00:00 UTCJul 19, 01:20 UTC1h 20m
2026-07-18 ADO39 - Jul 18, 12:10 UTCJul 18, 13:25 UTC1h 15m
2026-07-18 ADO74 - Jul 18, 09:50 UTCJul 18, 11:05 UTC1h 15m
2026-07-18 ADO73 - Jul 18, 07:30 UTCJul 18, 08:40 UTC1h 10m
2026-07-18 ADO78 - Jul 18, 04:55 UTCJul 18, 06:25 UTC1h 30m
2026-07-18 ADO77 HND → MMB Jul 18, 02:25 UTCJul 18, 03:55 UTC1h 31m
2026-07-18 ADO58 - Jul 18, 00:25 UTCJul 18, 01:30 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 JA15AN page for operator, model, and routing details .

Mode-S 846D0C frequently asked

What is Mode-S code 846D0C?
846D0C is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA15AN.
Where is Mode-S 846D0C registered?
Mode-S code 846D0C is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 846D0C broadcasting right now?
Mode-S 846D0C is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 846D0C, octal 41066414, decimal 8,678,668.
What flights does 846D0C operate?
Mode-S 846D0C has broadcast 20 distinct callsigns, including ADO80, ADO79, ADO18, ADO66, ADO62.