Apparatus

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sensors Mode-S transponder

8514F8

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA323J · BOEING 737-800

Hex
8514F8
Octal
41212370
Decimal
8,721,656
Country
JP
Tail
JA323J
Type
B738
No current signal · last broadcast Jul 26, 14:55 UTC
Flights observed
598
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 14:55 UTC

Last known position

Most recent position reported by Mode-S 8514F8.

Country allocation

The ICAO 24-bit address 8514F8 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
JAL668 - 7 2026-07-15
JAL629 Japan Airlines 7 2026-07-22
JAL242 Japan Airlines 7 2026-07-25
JAL239 Japan Airlines 7 2026-07-25
JAL698 Japan Airlines 6 2026-07-22
JAL670 - 6 2026-07-13
JAL665 - 6 2026-07-13
JAL663 - 6 2026-07-15
JAL630 Japan Airlines 6 2026-07-21
JAL498 - 6 2026-07-13
JAL494 - 6 2026-07-04
JAL486 Japan Airlines 6 2026-05-23
JAL432 Japan Airlines 6 2026-07-23
JAL431 Japan Airlines 6 2026-07-22
JAL3512 - 6 2026-07-10
JAL3403 - 6 2026-07-10
JAL262 Japan Airlines 6 2026-06-02
JAL695 Japan Airlines 5 2026-07-21
JAL687 - 5 2026-07-16
JAL671 - 5 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JAL228 KIX → HND Jul 26, 13:40 UTCJul 26, 14:35 UTC55m
2026-07-26 JAL2506 CTS → KIX Jul 26, 09:40 UTCJul 26, 11:30 UTC1h 50m
2026-07-26 JAL2505 KIX → CTS Jul 26, 07:05 UTCJul 26, 08:35 UTC1h 30m
2026-07-26 JAL2504 CTS → KIX Jul 26, 03:45 UTCJul 26, 05:45 UTC2h 0m
2026-07-26 JAL2501 KIX → CTS Jul 26, 01:00 UTCJul 26, 02:35 UTC1h 35m
2026-07-25 JAL221 HND → KIX Jul 25, 23:00 UTCJul 25, 23:50 UTC50m
2026-07-25 JAL242 OKJ → HND Jul 25, 10:45 UTCJul 25, 11:45 UTC1h 0m
2026-07-25 JAL239 HND → OKJ Jul 25, 08:45 UTCJul 25, 09:40 UTC55m
2026-07-25 JAL118 ITM → HND Jul 25, 04:45 UTCJul 25, 05:40 UTC55m
2026-07-25 JAL3912 CTS → ITM Jul 25, 01:35 UTCJul 25, 03:05 UTC1h 30m
2026-07-24 JAL3911 ITM → CTS Jul 24, 22:35 UTCJul 25, 00:15 UTC1h 40m
2026-07-24 JAL2092 OKA → ITM Jul 24, 09:50 UTCJul 24, 11:35 UTC1h 45m
2026-07-24 JAL2089 ITM → OKA Jul 24, 08:00 UTCJul 24, 08:20 UTC20m
2026-07-24 JAL2089 ITM → OKA Jul 24, 06:35 UTCJul 24, 07:15 UTC40m
2026-07-24 JAL2465 ITM → ASJ Jul 24, 01:45 UTCJul 24, 05:10 UTC3h 25m
2026-07-23 JAL3910 CTS → ITM Jul 23, 23:05 UTCJul 24, 00:40 UTC1h 35m
2026-07-23 JAL3919 ITM → CTS Jul 23, 10:30 UTCJul 23, 12:05 UTC1h 35m
2026-07-23 JAL2086 OKA → ITM Jul 23, 07:25 UTCJul 23, 09:00 UTC1h 35m
2026-07-23 JAL2085 ITM → OKA Jul 23, 05:55 UTCJul 23, 06:10 UTC15m
2026-07-23 JAL2085 ITM → OKA Jul 23, 04:35 UTCJul 23, 05:15 UTC40m
2026-07-23 JAL115 HND → ITM Jul 23, 02:50 UTCJul 23, 03:35 UTC45m
2026-07-23 JAL432 MYJ → HND Jul 23, 00:25 UTCJul 23, 01:30 UTC1h 5m
2026-07-22 JAL431 HND → MYJ Jul 22, 22:10 UTCJul 22, 23:10 UTC1h 0m
2026-07-22 JAL698 KMI → HND Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 JAL629 HND → KMJ Jul 22, 03:05 UTCJul 22, 04:25 UTC1h 20m
2026-07-22 JAL642 KOJ → HND Jul 22, 00:30 UTCJul 22, 01:50 UTC1h 20m
2026-07-21 JAL641 HND → KOJ Jul 21, 22:00 UTCJul 21, 23:00 UTC1h 0m
2026-07-21 JAL698 KMI → HND Jul 21, 10:20 UTCJul 21, 11:30 UTC1h 10m
2026-07-21 JAL695 HND → KMI Jul 21, 07:50 UTCJul 21, 08:45 UTC55m
2026-07-21 JAL630 KMJ → HND Jul 21, 05:10 UTCJul 21, 06:40 UTC1h 30m
2026-07-21 JAL629 HND → KMJ Jul 21, 02:50 UTCJul 21, 04:10 UTC1h 20m
2026-07-21 JAL642 KOJ → HND Jul 21, 00:15 UTCJul 21, 01:30 UTC1h 15m
2026-07-20 JAL641 HND → KOJ Jul 20, 21:40 UTCJul 20, 22:40 UTC1h 0m
2026-07-19 JAL228 KIX → HND Jul 19, 12:15 UTCJul 19, 13:10 UTC55m
2026-07-19 JAL2506 CTS → KIX Jul 19, 09:20 UTCJul 19, 11:15 UTC1h 55m
2026-07-19 JAL2505 KIX → CTS Jul 19, 06:25 UTCJul 19, 08:00 UTC1h 35m
2026-07-19 JAL2504 - Jul 19, 03:10 UTCJul 19, 05:10 UTC2h 0m
2026-07-19 JAL2501 KIX → CTS Jul 19, 00:35 UTCJul 19, 02:15 UTC1h 40m
2026-07-18 JAL221 HND → KIX Jul 18, 22:40 UTCJul 18, 23:30 UTC50m
2026-07-18 JAL242 OKJ → HND Jul 18, 10:25 UTCJul 18, 11:25 UTC1h 0m
2026-07-18 JAL239 - Jul 18, 08:35 UTCJul 18, 09:20 UTC45m
2026-07-18 JAL460 - Jul 18, 06:00 UTCJul 18, 07:00 UTC1h 0m
2026-07-18 JAL459 - Jul 18, 04:10 UTCJul 18, 04:55 UTC45m
2026-07-18 JAL664H - Jul 18, 01:45 UTCJul 18, 02:55 UTC1h 11m
2026-07-17 JAL661 HND → OIT Jul 17, 23:20 UTCJul 18, 00:19 UTC1h 0m
2026-07-17 JAL638 KMJ → HND Jul 17, 11:30 UTCJul 17, 12:45 UTC1h 15m
2026-07-17 JAL637 - Jul 17, 09:10 UTCJul 17, 10:25 UTC1h 15m
2026-07-17 JAL482 - Jul 17, 06:45 UTCJul 17, 08:00 UTC1h 15m
2026-07-17 JAL481 - Jul 17, 04:35 UTCJul 17, 05:25 UTC50m
2026-07-17 JAL690 KMI → HND Jul 17, 01:59 UTCJul 17, 03:20 UTC1h 20m

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 JA323J page for operator, model, and routing details .

Mode-S 8514F8 frequently asked

What is Mode-S code 8514F8?
8514F8 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA323J.
Where is Mode-S 8514F8 registered?
Mode-S code 8514F8 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8514F8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8514F8, octal 41212370, decimal 8,721,656.
What flights does 8514F8 operate?
Mode-S 8514F8 has broadcast 20 distinct callsigns, including JAL668, JAL629, JAL242, JAL239, JAL698.