sensors Mode-S transponder

86CF2B

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA806X · BOEING 737-800

Hex
86CF2B
Octal
41547453
Decimal
8,834,859
Country
JP
Tail
JA806X
Type
B738
Broadcasting now · callsign SNJ12 · 41,000 ft
Flights observed
8
Distinct callsigns
5
Country
JP
Last broadcast
12h ago

Current position

86CF2B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 86CF2B 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
SNJ78 - 3 2026-04-13
SNJ36 - 2 2026-04-14
SNJ79 - 1 2026-04-13
SNJ22 - 1 2026-04-13
SNJ19 - 1 2026-04-14

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 SNJ19 - Apr 14, 09:25 UTCApr 14, 10:55 UTC1h 30m
2026-04-14 SNJ36 - Apr 14, 07:10 UTCApr 14, 08:20 UTC1h 10m
2026-04-14 SNJ36 - Apr 14, 06:50 UTCApr 14, 07:10 UTC20m
2026-04-13 SNJ79 - Apr 13, 09:30 UTCApr 13, 10:10 UTC40m
2026-04-13 SNJ78 - Apr 13, 08:20 UTCApr 13, 08:30 UTC10m
2026-04-13 SNJ78 - Apr 13, 07:55 UTCApr 13, 08:30 UTC35m
2026-04-13 SNJ78 - Apr 13, 04:25 UTCApr 13, 08:15 UTC3h 50m
2026-04-13 SNJ22 - Apr 13, 01:05 UTCApr 13, 03:15 UTC2h 10m

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 JA806X page for operator, model, and routing details .

Mode-S 86CF2B frequently asked

What is Mode-S code 86CF2B?
86CF2B is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA806X.
Where is Mode-S 86CF2B registered?
Mode-S code 86CF2B is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 86CF2B broadcasting right now?
Yes. Mode-S 86CF2B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 86CF2B, octal 41547453, decimal 8,834,859.
What flights does 86CF2B operate?
Mode-S 86CF2B has broadcast 5 distinct callsigns, including SNJ78, SNJ36, SNJ79, SNJ22, SNJ19.