sensors Mode-S transponder

861BD2

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA608J · BOEING 767-300

Hex
861BD2
Octal
41415722
Decimal
8,788,946
Country
JP
Tail
JA608J
Type
B763
No current signal · last broadcast 12h ago
Flights observed
11
Distinct callsigns
6
Country
JP
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 861BD2.

Country allocation

The ICAO 24-bit address 861BD2 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 6 distinct

Callsign Airline Flights Last seen
JAL38 - 3 2026-04-13
JAL35 - 3 2026-04-13
JAL85 - 2 2026-04-13
JAL86 Japan Airlines 1 2026-04-13
JAL751 - 1 2026-04-14
JAL712 Japan Airlines 1 2026-04-14

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 JAL751 - Apr 14, 09:25 UTCApr 14, 11:00 UTC1h 35m
2026-04-14 JAL712 SIN → NRT Apr 14, 06:10 UTCApr 14, 06:55 UTC45m
2026-04-13 JAL35 - Apr 13, 16:15 UTCApr 13, 19:35 UTC3h 20m
2026-04-13 JAL35 - Apr 13, 15:50 UTCApr 13, 19:35 UTC3h 45m
2026-04-13 JAL35 - Apr 13, 15:40 UTCApr 13, 16:15 UTC35m
2026-04-13 JAL86 PVG → HND Apr 13, 09:20 UTCApr 13, 10:40 UTC1h 20m
2026-04-13 JAL85 - Apr 13, 03:55 UTCApr 13, 04:05 UTC10m
2026-04-13 JAL85 - Apr 13, 03:00 UTCApr 13, 04:05 UTC1h 5m
2026-04-13 JAL38 - Apr 13, 00:20 UTCApr 13, 00:35 UTC15m
2026-04-13 JAL38 - Apr 13, 00:00 UTCApr 13, 00:35 UTC35m
2026-04-12 JAL38 - Apr 12, 18:15 UTCApr 12, 18:25 UTC10m

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 JA608J page for operator, model, and routing details .

Mode-S 861BD2 frequently asked

What is Mode-S code 861BD2?
861BD2 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA608J.
Where is Mode-S 861BD2 registered?
Mode-S code 861BD2 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 861BD2 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 861BD2, octal 41415722, decimal 8,788,946.
What flights does 861BD2 operate?
Mode-S 861BD2 has broadcast 6 distinct callsigns, including JAL38, JAL35, JAL85, JAL86, JAL751.