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sensors Mode-S transponder

842250

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA09JJ · AIRBUS A-320

Hex
842250
Octal
41021120
Decimal
8,659,536
Country
JP
Tail
JA09JJ
Type
A320
No current signal · last broadcast Jul 26, 13:20 UTC
Flights observed
492
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 13:20 UTC

Last known position

Most recent position reported by Mode-S 842250.

Country allocation

The ICAO 24-bit address 842250 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
JJP334 Jetstar Japan 14 2026-07-24
JJP380 Jetstar Japan 13 2026-07-23
JJP335 Jetstar Japan 13 2026-07-23
JJP615 - 12 2026-07-18
JJP609 Jetstar Japan 12 2026-07-22
JJP589 Jetstar Japan 12 2026-07-23
JJP616 - 11 2026-07-18
JJP602 Jetstar Japan 11 2026-07-23
JJP580 Jetstar Japan 11 2026-07-23
JJP625 - 8 2026-07-12
JJP611 - 8 2026-07-15
JJP526 Jetstar Japan 8 2026-07-26
JJP521 Jetstar Japan 8 2026-07-25
JJP448 - 8 2026-07-12
JJP445 - 8 2026-07-12
JJP801 - 7 2026-07-13
JJP800 - 7 2026-07-13
JJP632 - 7 2026-07-16
JJP631 - 7 2026-07-16
JJP612 - 7 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJP526 FUK → NRT Jul 26, 11:40 UTCJul 26, 13:15 UTC1h 35m
2026-07-26 JJP519 NRT → FUK Jul 26, 08:55 UTCJul 26, 10:10 UTC1h 15m
2026-07-26 JJP426 KCZ → NRT Jul 26, 03:55 UTCJul 26, 07:25 UTC3h 31m
2026-07-26 JJP522 FUK → NRT Jul 26, 01:10 UTCJul 26, 02:45 UTC1h 35m
2026-07-25 JJP521 NRT → FUK Jul 25, 22:25 UTCJul 25, 23:40 UTC1h 15m
2026-07-25 JJP526 FUK → NRT Jul 25, 11:20 UTCJul 25, 12:50 UTC1h 30m
2026-07-25 JJP519 NRT → FUK Jul 25, 08:25 UTCJul 25, 09:50 UTC1h 25m
2026-07-25 JJP426 KCZ → NRT Jul 25, 06:15 UTCJul 25, 07:10 UTC55m
2026-07-25 JJP423 NRT → KCZ Jul 25, 03:40 UTCJul 25, 04:30 UTC50m
2026-07-25 JJP522 FUK → NRT Jul 25, 01:05 UTCJul 25, 02:30 UTC1h 25m
2026-07-24 JJP521 NRT → FUK Jul 24, 22:15 UTCJul 24, 23:25 UTC1h 10m
2026-07-24 JJP118 CTS → NRT Jul 24, 10:55 UTCJul 24, 12:05 UTC1h 10m
2026-07-24 JJP117 NRT → CTS Jul 24, 08:20 UTCJul 24, 09:45 UTC1h 25m
2026-07-24 JJP334 OKA → NRT Jul 24, 04:45 UTCJul 24, 07:00 UTC2h 15m
2026-07-24 JJP381 NGO → OKA Jul 24, 01:15 UTCJul 24, 03:00 UTC1h 45m
2026-07-23 JJP580 FUK → NGO Jul 23, 23:10 UTCJul 23, 23:55 UTC45m
2026-07-23 JJP589 NGO → FUK Jul 23, 10:50 UTCJul 23, 11:25 UTC35m
2026-07-23 JJP380 OKA → NGO Jul 23, 09:30 UTCJul 23, 09:40 UTC10m
2026-07-23 JJP380 OKA → NGO Jul 23, 08:10 UTCJul 23, 08:30 UTC20m
2026-07-23 JJP335 NRT → OKA Jul 23, 04:25 UTCJul 23, 06:40 UTC2h 15m
2026-07-23 JJP602 OIT → NRT Jul 23, 01:55 UTCJul 23, 03:10 UTC1h 15m
2026-07-22 JJP609 NRT → OIT Jul 22, 23:25 UTCJul 23, 00:40 UTC1h 15m
2026-07-22 JJP526 FUK → NRT Jul 22, 11:40 UTCJul 22, 13:20 UTC1h 40m
2026-07-22 JJP423 NRT → KCZ Jul 22, 03:45 UTCJul 22, 04:35 UTC50m
2026-07-21 JJP338 - Jul 21, 23:05 UTCJul 22, 01:20 UTC2h 15m
2026-07-21 JJP339 - Jul 21, 10:40 UTCJul 21, 12:55 UTC2h 15m
2026-07-21 JJP404 - Jul 21, 08:00 UTCJul 21, 09:15 UTC1h 15m
2026-07-21 JJP405 - Jul 21, 05:50 UTCJul 21, 06:55 UTC1h 5m
2026-07-21 JJP640 NGS → NRT Jul 21, 02:45 UTCJul 21, 04:20 UTC1h 35m
2026-07-21 JJP645 NRT → NGS Jul 21, 00:00 UTCJul 21, 01:30 UTC1h 30m
2026-07-20 JJP528 - Jul 20, 11:55 UTCJul 20, 13:25 UTC1h 30m
2026-07-20 JJP984 - Jul 20, 08:40 UTCJul 20, 10:25 UTC1h 45m
2026-07-20 JJP115 NRT → CTS Jul 20, 06:05 UTCJul 20, 07:20 UTC1h 15m
2026-07-20 JJP128 CTS → NRT Jul 20, 03:25 UTCJul 20, 04:40 UTC1h 15m
2026-07-20 JJP127 NRT → CTS Jul 20, 01:05 UTCJul 20, 02:15 UTC1h 10m
2026-07-19 JJP230 KIX → NRT Jul 19, 22:40 UTCJul 19, 23:50 UTC1h 10m
2026-07-19 JJP50 TPE → KIX Jul 19, 18:45 UTCJul 19, 21:00 UTC2h 15m
2026-07-19 JJP57 - Jul 19, 15:30 UTCJul 19, 17:05 UTC1h 35m
2026-07-19 JJP57 - Jul 19, 14:45 UTCJul 19, 15:25 UTC40m
2026-07-19 JJP54 TPE → KIX Jul 19, 11:00 UTCJul 19, 13:25 UTC2h 25m
2026-07-19 JJP55 KIX → TPE Jul 19, 09:05 UTCJul 19, 09:45 UTC40m
2026-07-19 JJP55 KIX → TPE Jul 19, 07:10 UTCJul 19, 07:55 UTC45m
2026-07-19 JJP215 NRT → KIX Jul 19, 03:20 UTCJul 19, 04:25 UTC1h 5m
2026-07-19 JJP102 - Jul 19, 00:50 UTCJul 19, 02:00 UTC1h 10m
2026-07-18 JJP103 - Jul 18, 22:30 UTCJul 18, 23:50 UTC1h 20m
2026-07-18 JJP616 - Jul 18, 10:30 UTCJul 18, 12:00 UTC1h 30m
2026-07-18 JJP615 - Jul 18, 07:50 UTCJul 18, 09:15 UTC1h 25m
2026-07-18 JJP506 FUK → NRT Jul 18, 04:55 UTCJul 18, 06:35 UTC1h 40m
2026-07-18 JJP507 - Jul 18, 02:05 UTCJul 18, 03:15 UTC1h 11m
2026-07-17 JJP338 - Jul 17, 22:35 UTCJul 18, 00:50 UTC2h 15m

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 JA09JJ page for operator, model, and routing details .

Mode-S 842250 frequently asked

What is Mode-S code 842250?
842250 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA09JJ.
Where is Mode-S 842250 registered?
Mode-S code 842250 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 842250 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 842250, octal 41021120, decimal 8,659,536.
What flights does 842250 operate?
Mode-S 842250 has broadcast 20 distinct callsigns, including JJP334, JJP380, JJP335, JJP615, JJP609.