Apparatus

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sensors Mode-S transponder

872841

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA901P · AIRBUS A-321neo

Hex
872841
Octal
41624101
Decimal
8,857,665
Country
JP
Tail
JA901P
Type
A21N
No current signal · last broadcast 20d ago
Flights observed
283
Distinct callsigns
13
Country
JP
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S 872841.

Country allocation

The ICAO 24-bit address 872841 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 13 distinct

Callsign Airline Flights Last seen
APJ63 - 35 2026-06-21
APJ773 - 34 2026-06-20
APJ774 - 32 2026-06-20
APJ705 - 29 2026-06-20
APJ706 - 28 2026-06-20
APJ91 - 26 2026-06-22
APJ92 - 25 2026-06-22
APJ64 - 24 2026-06-22
APJ32 - 24 2026-06-21
APJ31 - 21 2026-06-21
APJ4961 Peach Aviation 2 2026-06-23
APJ28 Peach Aviation 1 2026-04-20
APJ27 Peach Aviation 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 APJ4961 KIX → TPE Jun 23, 07:40 UTCJun 23, 08:09 UTC30m
2026-06-23 APJ4961 KIX → TPE Jun 23, 05:39 UTCJun 23, 06:15 UTC35m
2026-06-22 APJ92 - Jun 22, 18:40 UTCJun 23, 00:00 UTC5h 20m
2026-06-22 APJ91 - Jun 22, 11:00 UTCJun 22, 16:29 UTC5h 30m
2026-06-22 APJ64 HKG → KIX Jun 22, 04:59 UTCJun 22, 08:19 UTC3h 20m
2026-06-21 APJ63 KIX → HKG Jun 21, 23:24 UTCJun 22, 02:50 UTC3h 25m
2026-06-21 APJ32 - Jun 21, 08:35 UTCJun 21, 09:10 UTC35m
2026-06-21 APJ32 - Jun 21, 06:24 UTCJun 21, 07:09 UTC45m
2026-06-21 APJ31 KIX → KHH Jun 21, 01:55 UTCJun 21, 04:44 UTC2h 50m
2026-06-20 APJ774 - Jun 20, 20:55 UTCJun 20, 23:55 UTC3h 0m
2026-06-20 APJ773 - Jun 20, 09:49 UTCJun 20, 12:50 UTC3h 0m
2026-06-20 APJ706 ICN → KIX Jun 20, 05:59 UTCJun 20, 07:24 UTC1h 25m
2026-06-20 APJ705 KIX → ICN Jun 20, 02:59 UTCJun 20, 04:24 UTC1h 25m
2026-06-19 APJ92 BKK → KIX Jun 19, 18:39 UTCJun 19, 23:59 UTC5h 20m
2026-06-19 APJ91 - Jun 19, 10:44 UTCJun 19, 16:09 UTC5h 25m
2026-06-19 APJ64 HKG → KIX Jun 19, 05:05 UTCJun 19, 08:29 UTC3h 25m
2026-06-19 APJ63 - Jun 19, 02:45 UTCJun 19, 02:59 UTC15m
2026-06-18 APJ63 - Jun 18, 23:35 UTCJun 19, 02:09 UTC2h 34m
2026-06-18 APJ32 KHH → KIX Jun 18, 06:35 UTCJun 18, 09:10 UTC2h 35m
2026-06-18 APJ31 KIX → KHH Jun 18, 02:20 UTCJun 18, 05:10 UTC2h 50m
2026-06-17 APJ774 - Jun 17, 21:05 UTCJun 18, 00:00 UTC2h 55m
2026-06-17 APJ774 - Jun 17, 17:55 UTCJun 17, 18:05 UTC10m
2026-06-17 APJ773 - Jun 17, 09:40 UTCJun 17, 15:20 UTC5h 40m
2026-06-17 APJ706 ICN → KIX Jun 17, 05:50 UTCJun 17, 07:25 UTC1h 35m
2026-06-17 APJ705 KIX → ICN Jun 17, 02:55 UTCJun 17, 04:15 UTC1h 20m
2026-06-16 APJ92 - Jun 16, 18:39 UTCJun 16, 23:55 UTC5h 16m
2026-06-16 APJ91 KIX → BKK Jun 16, 10:45 UTCJun 16, 16:15 UTC5h 30m
2026-06-16 APJ64 HKG → KIX Jun 16, 05:05 UTCJun 16, 08:39 UTC3h 35m
2026-06-16 APJ63 - Jun 16, 03:10 UTCJun 16, 03:25 UTC15m
2026-06-15 APJ63 - Jun 15, 23:30 UTCJun 16, 02:29 UTC3h 0m
2026-06-15 APJ32 KHH → KIX Jun 15, 06:15 UTCJun 15, 09:00 UTC2h 45m
2026-06-15 APJ31 KIX → KHH Jun 15, 01:55 UTCJun 15, 05:00 UTC3h 5m
2026-06-14 APJ774 SIN → KIX Jun 14, 21:10 UTCJun 15, 00:20 UTC3h 10m
2026-06-14 APJ773 KIX → SIN Jun 14, 09:50 UTCJun 14, 12:50 UTC3h 0m
2026-06-14 APJ706 ICN → KIX Jun 14, 06:00 UTCJun 14, 07:35 UTC1h 35m
2026-06-14 APJ705 - Jun 14, 03:05 UTCJun 14, 04:25 UTC1h 20m
2026-06-13 APJ92 BKK → KIX Jun 13, 19:05 UTCJun 14, 00:20 UTC5h 15m
2026-06-13 APJ91 KIX → BKK Jun 13, 10:45 UTCJun 13, 16:15 UTC5h 30m
2026-06-13 APJ64 HKG → KIX Jun 13, 05:00 UTCJun 13, 08:25 UTC3h 25m
2026-06-13 APJ63 - Jun 13, 02:50 UTCJun 13, 03:10 UTC20m
2026-06-12 APJ63 - Jun 12, 23:25 UTCJun 13, 02:10 UTC2h 45m
2026-06-12 APJ32 KHH → KIX Jun 12, 06:25 UTCJun 12, 09:05 UTC2h 40m
2026-06-12 APJ31 KIX → KHH Jun 12, 02:00 UTCJun 12, 05:00 UTC3h 0m
2026-06-11 APJ774 SIN → KIX Jun 11, 20:55 UTCJun 11, 23:45 UTC2h 50m
2026-06-11 APJ774 SIN → KIX Jun 11, 17:50 UTCJun 11, 18:00 UTC10m
2026-06-11 APJ773 KIX → SIN Jun 11, 09:45 UTCJun 11, 16:00 UTC6h 15m
2026-06-11 APJ706 ICN → KIX Jun 11, 05:50 UTCJun 11, 07:15 UTC1h 25m
2026-06-11 APJ705 KIX → ICN Jun 11, 03:05 UTCJun 11, 04:35 UTC1h 30m
2026-06-10 APJ774 SIN → KIX Jun 10, 21:15 UTCJun 11, 00:00 UTC2h 45m
2026-06-10 APJ773 KIX → SIN Jun 10, 09:45 UTCJun 10, 15:55 UTC6h 10m

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 JA901P page for operator, model, and routing details .

Mode-S 872841 frequently asked

What is Mode-S code 872841?
872841 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA901P.
Where is Mode-S 872841 registered?
Mode-S code 872841 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 872841 broadcasting right now?
No active broadcast right now. Last signal was 20d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 872841, octal 41624101, decimal 8,857,665.
What flights does 872841 operate?
Mode-S 872841 has broadcast 13 distinct callsigns, including APJ63, APJ773, APJ774, APJ705, APJ706.