sensors Mode-S transponder

84B829

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA217P · AIRBUS A-320neo

Hex
84B829
Octal
41134051
Decimal
8,697,897
Country
JP
Tail
JA217P
Type
A20N
No current signal · last broadcast 15h ago
Flights observed
13
Distinct callsigns
9
Country
JP
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 84B829.

Country allocation

The ICAO 24-bit address 84B829 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 9 distinct

Callsign Airline Flights Last seen
APJ120 - 3 2026-04-13
APJ455 - 2 2026-04-13
APJ351 Peach Aviation 2 2026-04-13
APJ466 Peach Aviation 1 2026-04-13
APJ465 - 1 2026-04-13
APJ365 - 1 2026-04-14
APJ364 Peach Aviation 1 2026-04-14
APJ356 - 1 2026-04-14
APJ307 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 APJ364 FUK → NRT Apr 14, 10:45 UTCApr 14, 10:55 UTC10m
2026-04-14 APJ365 - Apr 14, 07:45 UTCApr 14, 08:55 UTC1h 10m
2026-04-14 APJ356 - Apr 14, 05:25 UTCApr 14, 06:15 UTC50m
2026-04-13 APJ307 - Apr 13, 23:30 UTCApr 13, 23:40 UTC10m
2026-04-13 APJ120 - Apr 13, 12:20 UTCApr 13, 13:00 UTC40m
2026-04-13 APJ120 - Apr 13, 12:00 UTCApr 13, 13:00 UTC1h 0m
2026-04-13 APJ120 - Apr 13, 11:20 UTCApr 13, 12:15 UTC55m
2026-04-13 APJ465 - Apr 13, 08:45 UTCApr 13, 10:00 UTC1h 15m
2026-04-13 APJ466 CTS → NGO Apr 13, 05:40 UTCApr 13, 07:00 UTC1h 20m
2026-04-13 APJ455 - Apr 13, 03:55 UTCApr 13, 04:20 UTC25m
2026-04-13 APJ455 - Apr 13, 02:30 UTCApr 13, 04:15 UTC1h 45m
2026-04-13 APJ351 NRT → FUK Apr 13, 00:20 UTCApr 13, 00:50 UTC30m
2026-04-12 APJ351 NRT → FUK Apr 12, 23:55 UTCApr 13, 00:50 UTC55m

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 JA217P page for operator, model, and routing details .

Mode-S 84B829 frequently asked

What is Mode-S code 84B829?
84B829 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA217P.
Where is Mode-S 84B829 registered?
Mode-S code 84B829 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 84B829 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 84B829, octal 41134051, decimal 8,697,897.
What flights does 84B829 operate?
Mode-S 84B829 has broadcast 9 distinct callsigns, including APJ120, APJ455, APJ351, APJ466, APJ465.