sensors Mode-S transponder

86D974

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA833J · BOEING 787-8 Dreamliner

Hex
86D974
Octal
41554564
Decimal
8,837,492
Country
JP
Tail
JA833J
Type
B788
No current signal · last broadcast 16h ago
Flights observed
7
Distinct callsigns
3
Country
JP
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 86D974.

Country allocation

The ICAO 24-bit address 86D974 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 3 distinct

Callsign Airline Flights Last seen
JAL707 Japan Airlines 4 2026-04-13
JAL728 - 2 2026-04-13
JAL894 - 1 2026-04-14

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 JAL894 - Apr 14, 06:30 UTCApr 14, 06:55 UTC25m
2026-04-13 JAL728 - Apr 13, 20:00 UTCApr 13, 21:45 UTC1h 45m
2026-04-13 JAL728 - Apr 13, 18:00 UTCApr 13, 20:10 UTC2h 10m
2026-04-13 JAL707 NRT → BKK Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 JAL707 NRT → BKK Apr 13, 12:20 UTCApr 13, 16:05 UTC3h 45m
2026-04-13 JAL707 NRT → BKK Apr 13, 11:55 UTCApr 13, 15:50 UTC3h 55m
2026-04-13 JAL707 NRT → BKK Apr 13, 10:00 UTCApr 13, 12:15 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 JA833J page for operator, model, and routing details .

Mode-S 86D974 frequently asked

What is Mode-S code 86D974?
86D974 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA833J.
Where is Mode-S 86D974 registered?
Mode-S code 86D974 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 86D974 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 86D974, octal 41554564, decimal 8,837,492.
What flights does 86D974 operate?
Mode-S 86D974 has broadcast 3 distinct callsigns, including JAL707, JAL728, JAL894.