Apparatus

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sensors Mode-S transponder

8405AA

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA01JC · ATR-42-600

Hex
8405AA
Octal
41002652
Decimal
8,652,202
Country
JP
Tail
JA01JC
Type
AT46
No current signal · last broadcast Jul 26, 09:30 UTC
Flights observed
236
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 09:30 UTC

Last known position

Most recent position reported by Mode-S 8405AA.

Country allocation

The ICAO 24-bit address 8405AA 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 20 distinct

Callsign Airline Flights Last seen
JL3551 - 14 2026-07-18
JL3550 Japan Airlines 14 2026-07-19
JL3716 Japan Airlines 13 2026-07-25
JL3653 - 13 2026-07-19
JL3715 Japan Airlines 12 2026-07-25
JL3673 - 12 2026-07-18
JL3555 - 10 2026-07-18
JL3554 - 10 2026-07-18
JL2326 Japan Airlines 10 2026-07-26
JL2325 Japan Airlines 10 2026-07-26
JL2451 - 8 2026-07-11
JL2450 Japan Airlines 8 2026-07-26
JL2324 - 8 2026-07-11
JL2323 - 8 2026-07-11
JL3686 - 7 2026-07-11
JL3676 - 7 2026-07-18
JL3654 - 6 2026-07-18
AHX105 Amakusa Airlines 6 2026-06-07
JL3867 - 5 2026-07-02
JL3866 - 5 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JL2326 TJH → ITM Jul 26, 09:15 UTCJul 26, 09:30 UTC15m
2026-07-26 JL2325 ITM → TJH Jul 26, 08:05 UTCJul 26, 08:25 UTC20m
2026-07-26 JL2450 KUM → ITM Jul 26, 06:55 UTCJul 26, 07:10 UTC15m
2026-07-25 JL3715 OKA → OKE Jul 25, 05:55 UTCJul 25, 06:15 UTC20m
2026-07-25 JL3716 OKE → OKA Jul 25, 04:10 UTCJul 25, 04:25 UTC15m
2026-07-23 JL3715 OKA → OKE Jul 23, 05:45 UTCJul 23, 06:00 UTC15m
2026-07-23 JL3716 OKE → OKA Jul 23, 04:00 UTCJul 23, 04:20 UTC20m
2026-07-21 JL3715 OKA → OKE Jul 21, 05:50 UTCJul 21, 06:10 UTC20m
2026-07-21 JL3716 OKE → OKA Jul 21, 04:00 UTCJul 21, 04:20 UTC20m
2026-07-19 JL3653 - Jul 19, 04:15 UTCJul 19, 04:35 UTC20m
2026-07-19 JL3550 IZO → FUK Jul 19, 02:15 UTCJul 19, 02:50 UTC35m
2026-07-18 JL3551 - Jul 18, 22:35 UTCJul 18, 23:15 UTC40m
2026-07-18 JL3554 - Jul 18, 10:25 UTCJul 18, 10:45 UTC20m
2026-07-18 JL3555 - Jul 18, 08:45 UTCJul 18, 09:20 UTC35m
2026-07-18 JL3676 - Jul 18, 07:15 UTCJul 18, 07:40 UTC25m
2026-07-18 JL3673 - Jul 18, 05:05 UTCJul 18, 05:30 UTC25m
2026-07-18 JL3654 - Jul 18, 03:25 UTCJul 18, 03:45 UTC20m
2026-07-17 JL3715 OKA → OKE Jul 17, 05:55 UTCJul 17, 06:10 UTC15m
2026-07-17 JL3716 OKE → OKA Jul 17, 04:10 UTCJul 17, 04:29 UTC20m
2026-07-15 JL3715 - Jul 15, 05:50 UTCJul 15, 06:10 UTC20m
2026-07-15 JL3716 - Jul 15, 04:05 UTCJul 15, 04:25 UTC20m
2026-07-14 JAL3867 - Jul 14, 05:10 UTCJul 14, 05:30 UTC20m
2026-07-14 JL3866 - Jul 14, 03:55 UTCJul 14, 04:10 UTC15m
2026-07-13 JL3653 - Jul 13, 04:20 UTCJul 13, 04:45 UTC25m
2026-07-13 JL3550 - Jul 13, 02:10 UTCJul 13, 02:45 UTC35m
2026-07-12 JL3551 - Jul 12, 22:30 UTCJul 12, 23:15 UTC45m
2026-07-12 JL3554 - Jul 12, 10:35 UTCJul 12, 11:05 UTC30m
2026-07-12 JL3555 - Jul 12, 08:55 UTCJul 12, 09:30 UTC35m
2026-07-12 JL3676 - Jul 12, 07:15 UTCJul 12, 07:31 UTC15m
2026-07-12 JL3673 - Jul 12, 05:01 UTCJul 12, 05:20 UTC20m
2026-07-12 JL3654 - Jul 12, 03:30 UTCJul 12, 03:45 UTC15m
2026-07-11 JL3686 - Jul 11, 11:15 UTCJul 11, 11:50 UTC35m
2026-07-11 JL3687 - Jul 11, 10:05 UTCJul 11, 10:20 UTC15m
2026-07-11 JL2451 - Jul 11, 02:35 UTCJul 11, 03:10 UTC35m
2026-07-11 JL2324 - Jul 11, 01:15 UTCJul 11, 01:35 UTC20m
2026-07-11 JL2323 - Jul 11, 00:05 UTCJul 11, 00:25 UTC20m
2026-07-10 JL2326 - Jul 10, 09:10 UTCJul 10, 09:30 UTC20m
2026-07-10 JL2325 - Jul 10, 08:10 UTCJul 10, 08:25 UTC15m
2026-07-10 JL3745 - Jul 10, 06:55 UTCJul 10, 07:15 UTC20m
2026-07-09 JL3686 - Jul 9, 11:20 UTCJul 9, 11:50 UTC30m
2026-07-09 JL3687 - Jul 9, 10:10 UTCJul 9, 10:25 UTC15m
2026-07-09 JL3653 - Jul 9, 04:00 UTCJul 9, 04:25 UTC25m
2026-07-09 JL3550 - Jul 9, 02:10 UTCJul 9, 02:45 UTC35m
2026-07-08 JL3551 - Jul 8, 22:30 UTCJul 8, 23:05 UTC35m
2026-07-08 JL3554 - Jul 8, 10:25 UTCJul 8, 10:50 UTC25m
2026-07-08 JL3555 - Jul 8, 08:40 UTCJul 8, 09:20 UTC40m
2026-07-08 JL3676 - Jul 8, 07:05 UTCJul 8, 07:30 UTC25m
2026-07-08 JL3673 - Jul 8, 05:00 UTCJul 8, 05:20 UTC20m
2026-07-08 JL3654 - Jul 8, 03:30 UTCJul 8, 03:45 UTC15m
2026-07-07 JL3653 - Jul 7, 04:20 UTCJul 7, 04:40 UTC20m

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 JA01JC page for operator, model, and routing details .

Mode-S 8405AA frequently asked

What is Mode-S code 8405AA?
8405AA is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA01JC.
Where is Mode-S 8405AA registered?
Mode-S code 8405AA is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8405AA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8405AA, octal 41002652, decimal 8,652,202.
What flights does 8405AA operate?
Mode-S 8405AA has broadcast 20 distinct callsigns, including JL3551, JL3550, JL3716, JL3653, JL3715.