Apparatus

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sensors Mode-S transponder

861B20

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA603A · BOEING 767-300

Hex
861B20
Octal
41415440
Decimal
8,788,768
Country
JP
Tail
JA603A
Type
B763
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
291
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S 861B20.

Country allocation

The ICAO 24-bit address 861B20 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
ANA8489 - 30 2026-07-24
ANA8475 All Nippon Airways 24 2026-07-26
ANA8511 All Nippon Airways 23 2026-07-22
ANA8490 All Nippon Airways 23 2026-07-25
ANA8476 All Nippon Airways 23 2026-07-26
ANA8512 - 18 2026-07-22
ANA8441 - 15 2026-07-01
ANA8442 - 14 2026-07-01
ANA8427 - 12 2026-07-21
ANA8516 - 11 2026-07-16
ANA8501 - 11 2026-07-21
ANA8515 - 10 2026-07-09
ANA8526 - 8 2026-07-18
ANA8513 All Nippon Airways 8 2026-07-19
ANA8403 All Nippon Airways 8 2026-06-14
ANA8525 - 7 2026-07-13
ANA8517 All Nippon Airways 6 2026-07-26
ANA8404 - 6 2026-07-17
ANA8514 - 5 2026-07-12
ANA8528 - 4 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ANA8517 NRT → PVG Jul 26, 14:15 UTCJul 26, 21:35 UTC7h 20m
2026-07-26 ANA8476 ICN → NRT Jul 26, 07:45 UTCJul 26, 09:40 UTC1h 55m
2026-07-26 ANA8475 NRT → ICN Jul 26, 03:40 UTCJul 26, 05:40 UTC2h 0m
2026-07-25 ANA8490 CAN → NRT Jul 25, 12:55 UTCJul 25, 23:05 UTC10h 10m
2026-07-25 ANA8502 - Jul 25, 03:55 UTCJul 25, 10:50 UTC6h 55m
2026-07-24 ANA8490 CAN → NRT Jul 24, 21:15 UTCJul 24, 23:00 UTC1h 45m
2026-07-24 ANA8489 - Jul 24, 16:50 UTCJul 24, 17:00 UTC10m
2026-07-24 ANA8489 - Jul 24, 13:10 UTCJul 24, 14:45 UTC1h 35m
2026-07-24 ANA8476 ICN → NRT Jul 24, 06:10 UTCJul 24, 08:05 UTC1h 55m
2026-07-24 ANA8475 NRT → ICN Jul 24, 01:00 UTCJul 24, 02:55 UTC1h 55m
2026-07-23 ANA8490 - Jul 23, 21:05 UTCJul 23, 23:00 UTC1h 55m
2026-07-23 ANA8489 - Jul 23, 16:25 UTCJul 23, 16:35 UTC10m
2026-07-23 ANA8489 - Jul 23, 12:35 UTCJul 23, 14:20 UTC1h 45m
2026-07-23 ANA8476 ICN → NRT Jul 23, 05:55 UTCJul 23, 07:50 UTC1h 55m
2026-07-23 ANA8475 NRT → ICN Jul 23, 01:05 UTCJul 23, 02:55 UTC1h 50m
2026-07-22 ANA8512 HKG → NRT Jul 22, 18:50 UTCJul 22, 22:40 UTC3h 50m
2026-07-22 ANA8511 NRT → HKG Jul 22, 13:05 UTCJul 22, 17:00 UTC3h 55m
2026-07-21 ANA8427 - Jul 21, 14:35 UTCJul 21, 21:30 UTC6h 55m
2026-07-21 ANA8501 - Jul 21, 06:05 UTCJul 21, 13:10 UTC7h 5m
2026-07-20 ANA8536 - Jul 20, 14:15 UTCJul 20, 21:40 UTC7h 25m
2026-07-19 ANA8528 - Jul 19, 20:20 UTCJul 19, 23:35 UTC3h 15m
2026-07-19 ANA8527 - Jul 19, 14:15 UTCJul 19, 16:20 UTC2h 5m
2026-07-19 NH8514 HKG → NRT Jul 19, 08:05 UTCJul 19, 12:10 UTC4h 5m
2026-07-19 ANA8513 NRT → HKG Jul 19, 02:10 UTCJul 19, 06:00 UTC3h 50m
2026-07-18 ANA8526 - Jul 18, 12:10 UTCJul 18, 21:25 UTC9h 15m
2026-07-17 ANA8490 - Jul 17, 12:45 UTCJul 17, 22:45 UTC10h 0m
2026-07-17 ANA8404 - Jul 17, 03:05 UTCJul 17, 11:04 UTC8h 0m
2026-07-16 ANA8512 HKG → NRT Jul 16, 21:00 UTCJul 17, 01:05 UTC4h 5m
2026-07-16 ANA8511 NRT → HKG Jul 16, 13:34 UTCJul 16, 17:25 UTC3h 50m
2026-07-16 ANA8516 - Jul 16, 02:10 UTCJul 16, 11:50 UTC9h 40m
2026-07-15 ANA8518 - Jul 15, 14:25 UTCJul 15, 22:00 UTC7h 35m
2026-07-15 ANA8501 - Jul 15, 03:55 UTCJul 15, 10:50 UTC6h 55m
2026-07-14 ANA8518 - Jul 14, 14:15 UTCJul 14, 21:50 UTC7h 35m
2026-07-14 ANA8516 - Jul 14, 02:15 UTCJul 14, 11:40 UTC9h 25m
2026-07-13 ANA8526 - Jul 13, 18:00 UTCJul 13, 21:20 UTC3h 20m
2026-07-13 ANA8525 - Jul 13, 12:15 UTCJul 13, 13:55 UTC1h 40m
2026-07-13 ANA8427 - Jul 13, 00:10 UTCJul 13, 07:50 UTC7h 40m
2026-07-12 ANA8404 - Jul 12, 14:20 UTCJul 12, 22:15 UTC7h 55m
2026-07-12 ANA8514 HKG → NRT Jul 12, 07:45 UTCJul 12, 11:45 UTC4h 0m
2026-07-12 ANA8513 - Jul 12, 01:25 UTCJul 12, 05:10 UTC3h 45m
2026-07-11 ANA8490 - Jul 11, 19:05 UTCJul 11, 23:20 UTC4h 15m
2026-07-11 ANA8489 - Jul 11, 16:15 UTCJul 11, 16:25 UTC10m
2026-07-11 ANA8489 - Jul 11, 12:40 UTCJul 11, 14:15 UTC1h 35m
2026-07-11 ANA8501 - Jul 11, 03:45 UTCJul 11, 10:20 UTC6h 35m
2026-07-10 ANA8518 - Jul 10, 14:20 UTCJul 10, 22:00 UTC7h 41m
2026-07-10 ANA8501 - Jul 10, 04:55 UTCJul 10, 11:50 UTC6h 55m
2026-07-09 ANA8512 HKG → NRT Jul 9, 20:25 UTCJul 10, 00:15 UTC3h 50m
2026-07-09 ANA8511 NRT → HKG Jul 9, 13:45 UTCJul 9, 17:40 UTC3h 55m
2026-07-09 ANA8516 - Jul 9, 08:50 UTCJul 9, 11:50 UTC3h 0m
2026-07-09 ANA8515 - Jul 9, 02:30 UTCJul 9, 04:05 UTC1h 35m

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 JA603A page for operator, model, and routing details .

Mode-S 861B20 frequently asked

What is Mode-S code 861B20?
861B20 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA603A.
Where is Mode-S 861B20 registered?
Mode-S code 861B20 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861B20 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861B20, octal 41415440, decimal 8,788,768.
What flights does 861B20 operate?
Mode-S 861B20 has broadcast 20 distinct callsigns, including ANA8489, ANA8475, ANA8511, ANA8490, ANA8476.