Apparatus

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sensors Mode-S transponder

84657C

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA137A · AIRBUS A-321neo

Hex
84657C
Octal
41062574
Decimal
8,676,732
Country
JP
Tail
JA137A
Type
A21N
Transponder active on ground
Flights observed
514
Distinct callsigns
20
Country
JP
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 84657C.

Country allocation

The ICAO 24-bit address 84657C 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
ANA1621 - 10 2026-07-05
ANA577 - 7 2026-06-19
ANA538 - 7 2026-07-05
ANA533 - 7 2026-07-05
ANA26 - 7 2026-06-24
ANA1174 All Nippon Airways 7 2026-06-20
ANA696 - 6 2026-07-12
ANA693 - 6 2026-07-12
ANA649 - 6 2026-07-03
ANA642 - 6 2026-07-03
ANA578 - 6 2026-06-26
ANA429 - 6 2026-06-23
ANA428 - 6 2026-06-23
ANA420 - 6 2026-06-23
ANA416 - 6 2026-06-26
ANA388 - 6 2026-07-17
ANA385 - 6 2026-07-17
ANA299 - 6 2026-07-05
ANA292 All Nippon Airways 6 2026-07-05
ANA21 - 6 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 ANA281 - Jul 18, 01:05 UTCJul 18, 01:50 UTC45m
2026-07-17 ANA652 - Jul 17, 22:20 UTCJul 17, 23:25 UTC1h 5m
2026-07-17 ANA659 - Jul 17, 11:25 UTCJul 17, 12:19 UTC55m
2026-07-17 ANA388 - Jul 17, 08:59 UTCJul 17, 10:15 UTC1h 15m
2026-07-17 ANA385 - Jul 17, 07:00 UTCJul 17, 07:44 UTC45m
2026-07-17 ANA646 - Jul 17, 04:14 UTCJul 17, 05:45 UTC1h 30m
2026-07-17 ANA643 - Jul 17, 01:45 UTCJul 17, 03:05 UTC1h 20m
2026-07-16 ANA692 UBJ → HND Jul 16, 22:59 UTCJul 17, 00:20 UTC1h 20m
2026-07-16 ANA699 - Jul 16, 10:20 UTCJul 16, 11:20 UTC1h 0m
2026-07-16 ANA568 - Jul 16, 07:40 UTCJul 16, 08:45 UTC1h 5m
2026-07-16 ANA565 - Jul 16, 05:30 UTCJul 16, 06:10 UTC40m
2026-07-15 ANA564 HND → HND Jul 15, 23:25 UTCJul 16, 02:20 UTC2h 55m
2026-07-15 ANA684 - Jul 15, 10:05 UTCJul 15, 11:15 UTC1h 10m
2026-07-15 ANA1862 - Jul 15, 07:45 UTCJul 15, 09:10 UTC1h 25m
2026-07-15 ANA1863 - Jul 15, 03:20 UTCJul 15, 05:30 UTC2h 10m
2026-07-15 ANA733 - Jul 15, 01:05 UTCJul 15, 01:50 UTC45m
2026-07-14 ANA732 - Jul 14, 23:10 UTCJul 15, 00:00 UTC50m
2026-07-14 ANA739 - Jul 14, 11:55 UTCJul 14, 12:40 UTC45m
2026-07-14 ANA738 - Jul 14, 08:40 UTCJul 14, 09:40 UTC1h 0m
2026-07-14 ANA1864 - Jul 14, 05:15 UTCJul 14, 07:30 UTC2h 15m
2026-07-14 ANA1861 - Jul 14, 03:50 UTCJul 14, 04:05 UTC15m
2026-07-14 ANA1861 - Jul 14, 02:40 UTCJul 14, 03:10 UTC30m
2026-07-14 ANA675 - Jul 14, 00:45 UTCJul 14, 01:45 UTC1h 0m
2026-07-13 ANA452D - Jul 13, 21:50 UTCJul 13, 23:15 UTC1h 25m
2026-07-13 ANA457 - Jul 13, 11:45 UTCJul 13, 13:05 UTC1h 20m
2026-07-13 ANA400 - Jul 13, 10:10 UTCJul 13, 10:45 UTC35m
2026-07-13 ANA397 - Jul 13, 07:40 UTCJul 13, 08:05 UTC25m
2026-07-13 ANA612 - Jul 13, 04:40 UTCJul 13, 05:40 UTC1h 0m
2026-07-13 ANA605 - Jul 13, 02:05 UTCJul 13, 03:01 UTC55m
2026-07-13 ANA396 - Jul 13, 00:05 UTCJul 13, 00:45 UTC40m
2026-07-12 ANA393 - Jul 12, 22:25 UTCJul 12, 22:55 UTC30m
2026-07-12 ANA98 - Jul 12, 13:30 UTCJul 12, 14:40 UTC1h 10m
2026-07-12 ANA95 HND → KIX Jul 12, 11:25 UTCJul 12, 12:25 UTC1h 0m
2026-07-12 ANA568 - Jul 12, 09:15 UTCJul 12, 10:10 UTC55m
2026-07-12 ANA565 - Jul 12, 07:01 UTCJul 12, 07:45 UTC45m
2026-07-12 ANA696 - Jul 12, 04:05 UTCJul 12, 05:20 UTC1h 15m
2026-07-12 ANA693 - Jul 12, 01:45 UTCJul 12, 02:50 UTC1h 5m
2026-07-11 ANA620 - Jul 11, 23:40 UTCJul 12, 00:25 UTC45m
2026-07-11 ANA629 - Jul 11, 10:40 UTCJul 11, 11:35 UTC55m
2026-07-11 ANA456 HSG → HND Jul 11, 06:45 UTCJul 11, 08:20 UTC1h 35m
2026-07-11 ANA453 - Jul 11, 04:25 UTCJul 11, 05:50 UTC1h 25m
2026-07-11 ANA282 - Jul 11, 02:20 UTCJul 11, 03:25 UTC1h 5m
2026-07-11 ANA281 - Jul 11, 00:35 UTCJul 11, 01:20 UTC45m
2026-07-10 ANA652 - Jul 10, 22:20 UTCJul 10, 23:25 UTC1h 5m
2026-07-10 ANA659 - Jul 10, 11:20 UTCJul 10, 12:10 UTC50m
2026-07-10 ANA388 - Jul 10, 08:35 UTCJul 10, 09:45 UTC1h 10m
2026-07-10 ANA385 - Jul 10, 06:35 UTCJul 10, 07:25 UTC50m
2026-07-10 ANA646 - Jul 10, 03:45 UTCJul 10, 05:10 UTC1h 25m
2026-07-10 ANA643 - Jul 10, 01:30 UTCJul 10, 02:40 UTC1h 10m
2026-07-09 ANA692 - Jul 9, 22:55 UTCJul 10, 00:15 UTC1h 20m

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 JA137A page for operator, model, and routing details .

Mode-S 84657C frequently asked

What is Mode-S code 84657C?
84657C is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA137A.
Where is Mode-S 84657C registered?
Mode-S code 84657C is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 84657C broadcasting right now?
Mode-S 84657C 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 84657C, octal 41062574, decimal 8,676,732.
What flights does 84657C operate?
Mode-S 84657C has broadcast 20 distinct callsigns, including ANA1621, ANA577, ANA538, ANA533, ANA26.