sensors Mode-S transponder

872742

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA901A · BOEING 787-10 Dreamliner

Hex
872742
Octal
41623502
Decimal
8,857,410
Country
JP
Tail
JA901A
Type
B78X
No current signal · last broadcast 21h ago
Flights observed
8
Distinct callsigns
3
Country
JP
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 872742.

Country allocation

The ICAO 24-bit address 872742 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
ANA892 All Nippon Airways 3 2026-04-13
ANA891 - 3 2026-04-13
ANA847 All Nippon Airways 2 2026-04-14

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 ANA847 HND → BKK Apr 14, 07:45 UTCApr 14, 08:15 UTC30m
2026-04-14 ANA847 HND → BKK Apr 14, 05:15 UTCApr 14, 05:40 UTC25m
2026-04-13 ANA892 SGN → HND Apr 13, 19:50 UTCApr 13, 21:25 UTC1h 35m
2026-04-13 ANA892 SGN → HND Apr 13, 18:10 UTCApr 13, 19:55 UTC1h 45m
2026-04-13 ANA891 - Apr 13, 12:20 UTCApr 13, 12:35 UTC15m
2026-04-13 ANA891 - Apr 13, 11:55 UTCApr 13, 12:35 UTC40m
2026-04-13 ANA891 - Apr 13, 09:10 UTCApr 13, 12:15 UTC3h 5m
2026-04-12 ANA892 SGN → HND Apr 12, 18:45 UTCApr 12, 20:15 UTC1h 30m

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 JA901A page for operator, model, and routing details .

Mode-S 872742 frequently asked

What is Mode-S code 872742?
872742 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA901A.
Where is Mode-S 872742 registered?
Mode-S code 872742 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 872742 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 872742, octal 41623502, decimal 8,857,410.
What flights does 872742 operate?
Mode-S 872742 has broadcast 3 distinct callsigns, including ANA892, ANA891, ANA847.