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 Jul 26, 09:10 UTC
Flights observed
321
Distinct callsigns
18
Country
JP
Last broadcast
Jul 26, 09:10 UTC

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 18 distinct

Callsign Airline Flights Last seen
APJ773 Peach Aviation 42 2026-07-25
APJ774 Peach Aviation 39 2026-07-25
APJ63 - 35 2026-06-21
APJ705 Peach Aviation 31 2026-07-22
APJ706 - 29 2026-07-19
APJ91 - 28 2026-07-23
APJ32 Peach Aviation 28 2026-07-26
APJ92 Peach Aviation 27 2026-07-23
APJ31 Peach Aviation 26 2026-07-26
APJ64 - 24 2026-06-22
APJ4961 Peach Aviation 2 2026-06-23
APJ217 Peach Aviation 2 2026-07-24
APJ215 - 2 2026-07-18
APJ4962 Peach Aviation 1 2026-07-17
APJ28 Peach Aviation 1 2026-04-20
APJ27 Peach Aviation 1 2026-04-20
APJ214 Peach Aviation 1 2026-07-24
APJ212 - 1 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 APJ32 KHH → KIX Jul 26, 06:20 UTCJul 26, 09:00 UTC2h 41m
2026-07-26 APJ31 KIX → KHH Jul 26, 02:20 UTCJul 26, 05:05 UTC2h 45m
2026-07-25 APJ774 SIN → KIX Jul 25, 18:00 UTCJul 26, 00:15 UTC6h 15m
2026-07-25 APJ773 KIX → SIN Jul 25, 16:00 UTCJul 25, 16:10 UTC10m
2026-07-25 APJ773 KIX → SIN Jul 25, 09:45 UTCJul 25, 14:25 UTC4h 40m
2026-07-24 APJ774 SIN → KIX Jul 24, 21:30 UTCJul 25, 01:15 UTC3h 45m
2026-07-24 APJ774 SIN → KIX Jul 24, 19:05 UTCJul 24, 19:15 UTC10m
2026-07-24 APJ773 KIX → SIN Jul 24, 10:35 UTCJul 24, 15:30 UTC4h 55m
2026-07-24 APJ214 OKA → KIX Jul 24, 06:15 UTCJul 24, 07:45 UTC1h 30m
2026-07-24 APJ217 KIX → OKA Jul 24, 04:05 UTCJul 24, 04:35 UTC30m
2026-07-24 APJ217 KIX → OKA Jul 24, 02:50 UTCJul 24, 03:20 UTC30m
2026-07-23 APJ92 BKK → KIX Jul 23, 19:30 UTCJul 24, 00:50 UTC5h 20m
2026-07-23 APJ91 KIX → BKK Jul 23, 11:00 UTCJul 23, 16:30 UTC5h 30m
2026-07-23 APJ32 KHH → KIX Jul 23, 06:25 UTCJul 23, 09:05 UTC2h 40m
2026-07-23 APJ31 KIX → KHH Jul 23, 02:35 UTCJul 23, 05:15 UTC2h 40m
2026-07-22 APJ774 SIN → KIX Jul 22, 21:00 UTCJul 23, 00:05 UTC3h 5m
2026-07-22 APJ774 - Jul 22, 17:55 UTCJul 22, 18:05 UTC10m
2026-07-22 APJ773 - Jul 22, 11:10 UTCJul 22, 15:40 UTC4h 30m
2026-07-22 APJ705 KIX → ICN Jul 22, 03:35 UTCJul 22, 05:00 UTC1h 25m
2026-07-21 APJ92 - Jul 21, 19:05 UTCJul 22, 00:25 UTC5h 20m
2026-07-21 APJ91 KIX → BKK Jul 21, 11:10 UTCJul 21, 16:30 UTC5h 20m
2026-07-21 APJ32 KHH → KIX Jul 21, 06:40 UTCJul 21, 09:20 UTC2h 40m
2026-07-21 APJ31 KIX → KHH Jul 21, 02:40 UTCJul 21, 05:20 UTC2h 40m
2026-07-20 APJ32 KHH → KIX Jul 20, 06:25 UTCJul 20, 09:05 UTC2h 40m
2026-07-20 APJ31 KIX → KHH Jul 20, 04:30 UTCJul 20, 04:55 UTC25m
2026-07-20 APJ31 KIX → KHH Jul 20, 02:10 UTCJul 20, 03:50 UTC1h 40m
2026-07-19 APJ774 - Jul 19, 18:10 UTCJul 20, 00:10 UTC6h 0m
2026-07-19 APJ773 - Jul 19, 16:05 UTCJul 19, 16:25 UTC20m
2026-07-19 APJ773 - Jul 19, 10:30 UTCJul 19, 13:25 UTC2h 55m
2026-07-19 APJ706 ICN → KIX Jul 19, 05:55 UTCJul 19, 07:20 UTC1h 25m
2026-07-19 APJ705 KIX → ICN Jul 19, 03:10 UTCJul 19, 04:30 UTC1h 20m
2026-07-18 APJ774 - Jul 18, 21:00 UTCJul 18, 23:55 UTC2h 55m
2026-07-18 APJ773 - Jul 18, 15:30 UTCJul 18, 16:00 UTC30m
2026-07-18 APJ773 - Jul 18, 10:00 UTCJul 18, 12:55 UTC2h 55m
2026-07-18 APJ212 - Jul 18, 05:05 UTCJul 18, 06:50 UTC1h 45m
2026-07-18 APJ215 - Jul 18, 02:50 UTCJul 18, 03:10 UTC20m
2026-07-18 APJ215 - Jul 18, 01:39 UTCJul 18, 02:14 UTC35m
2026-07-17 APJ4962 TPE → KIX Jul 17, 04:20 UTCJul 17, 06:50 UTC2h 30m
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

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 Jul 26, 09:10 UTC.
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 18 distinct callsigns, including APJ773, APJ774, APJ63, APJ705, APJ706.