sensors Mode-S transponder

841EBC

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA08JJ · AIRBUS A-320

Hex
841EBC
Octal
41017274
Decimal
8,658,620
Country
JP
Tail
JA08JJ
Type
A320
Broadcasting now · callsign JJP404 · 10,875 ft
Flights observed
9
Distinct callsigns
5
Country
JP
Last broadcast
22h ago

Current position

841EBC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 841EBC 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 5 distinct

Callsign Airline Flights Last seen
JJP7303 - 3 2026-04-13
JJP7300 - 2 2026-04-13
JJP615 Jetstar Japan 2 2026-04-14
JJP521 Jetstar Japan 1 2026-04-13
JJP426 Jetstar Japan 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 JJP615 NRT → KMJ Apr 14, 09:10 UTCApr 14, 10:10 UTC1h 0m
2026-04-14 JJP615 NRT → KMJ Apr 14, 08:35 UTCApr 14, 09:05 UTC30m
2026-04-14 JJP426 KCZ → NRT Apr 14, 06:25 UTCApr 14, 07:10 UTC45m
2026-04-13 JJP521 NRT → FUK Apr 13, 22:20 UTCApr 13, 23:40 UTC1h 20m
2026-04-13 JJP7300 - Apr 13, 12:35 UTCApr 13, 13:30 UTC55m
2026-04-13 JJP7300 - Apr 13, 11:20 UTCApr 13, 11:40 UTC20m
2026-04-13 JJP7303 - Apr 13, 09:30 UTCApr 13, 10:00 UTC30m
2026-04-13 JJP7303 - Apr 13, 07:55 UTCApr 13, 10:00 UTC2h 5m
2026-04-13 JJP7303 - Apr 13, 07:20 UTCApr 13, 08:10 UTC50m

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 JA08JJ page for operator, model, and routing details .

Mode-S 841EBC frequently asked

What is Mode-S code 841EBC?
841EBC is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA08JJ.
Where is Mode-S 841EBC registered?
Mode-S code 841EBC is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 841EBC broadcasting right now?
Yes. Mode-S 841EBC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 841EBC, octal 41017274, decimal 8,658,620.
What flights does 841EBC operate?
Mode-S 841EBC has broadcast 5 distinct callsigns, including JJP7303, JJP7300, JJP615, JJP521, JJP426.