sensors Mode-S transponder

8511CA

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA316J · BOEING 737-800

Hex
8511CA
Octal
41210712
Decimal
8,720,842
Country
JP
Tail
JA316J
Type
B738
Broadcasting now · callsign JAL477 · 23,950 ft
Flights observed
243
Distinct callsigns
20
Country
JP
Last broadcast
1h ago

Current position

8511CA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 8511CA 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JAL430 MYJ → HND May 29, 22:25 UTCMay 29, 23:25 UTC1h 0m
2026-05-29 JAL443 HND → MYJ May 29, 11:20 UTCMay 29, 12:25 UTC1h 5m
2026-05-29 JAL324 FUK → HND May 29, 08:45 UTCMay 29, 10:05 UTC1h 20m
2026-05-29 JAL3512 CTS → FUK May 29, 04:40 UTCMay 29, 06:40 UTC2h 0m
2026-05-29 JAL3403 HIJ → CTS May 29, 01:55 UTCMay 29, 03:30 UTC1h 35m
2026-05-28 JAL255 HND → HIJ May 28, 23:55 UTCMay 29, 01:00 UTC1h 5m
2026-05-28 JAL220 KIX → HND May 28, 22:10 UTCMay 28, 22:55 UTC45m
2026-05-28 JAL229 HND → KIX May 28, 12:00 UTCMay 28, 13:05 UTC1h 5m
2026-05-28 JAL218 SHM → HND May 28, 09:50 UTCMay 28, 11:00 UTC1h 10m
2026-05-28 JAL219 HND → SHM May 28, 08:00 UTCMay 28, 08:30 UTC30m
2026-05-28 JAL120 ITM → HND May 28, 05:40 UTCMay 28, 06:40 UTC1h 0m
2026-05-28 JAL117 HND → ITM May 28, 03:45 UTCMay 28, 04:30 UTC45m
2026-05-28 JAL112 ITM → HND May 28, 01:40 UTCMay 28, 02:30 UTC50m
2026-05-27 JAL107 HND → ITM May 27, 23:50 UTCMay 28, 00:35 UTC45m
2026-05-21 JAL653 HND → KOJ May 21, 09:15 UTCMay 21, 13:25 UTC4h 10m
2026-05-21 JAL670 OIT → HND May 21, 06:05 UTCMay 21, 07:05 UTC1h 0m
2026-05-21 JAL665 HND → OIT May 21, 03:45 UTCMay 21, 04:55 UTC1h 10m
2026-05-21 JAL562 MMB → HND May 21, 01:35 UTCMay 21, 02:10 UTC35m
2026-05-20 JAL565 HND → MMB May 20, 22:25 UTCMay 20, 23:50 UTC1h 25m
2026-05-20 JAL484 TAK → HND May 20, 08:50 UTCMay 20, 10:00 UTC1h 10m
2026-05-20 JAL483 HND → TAK May 20, 07:00 UTCMay 20, 07:55 UTC55m
2026-05-20 JAL610 NGS → HND May 20, 04:05 UTCMay 20, 05:25 UTC1h 21m
2026-05-20 JAL607 HND → NGS May 20, 01:15 UTCMay 20, 02:40 UTC1h 25m
2026-05-19 JAL202 NGO → HND May 19, 23:05 UTCMay 19, 23:45 UTC40m
2026-05-19 JAL3118 CTS → NGO May 19, 11:15 UTCMay 19, 12:40 UTC1h 25m
2026-05-19 JAL3117 NGO → CTS May 19, 08:55 UTCMay 19, 10:10 UTC1h 15m
2026-05-19 JAL3114 CTS → NGO May 19, 06:25 UTCMay 19, 07:45 UTC1h 20m
2026-05-19 JAL3107 NGO → CTS May 19, 03:55 UTCMay 19, 05:15 UTC1h 20m
2026-05-19 JAL3106 CTS → NGO May 19, 01:20 UTCMay 19, 02:45 UTC1h 25m
2026-05-18 JAL2001 ITM → CTS May 18, 22:55 UTCMay 19, 00:25 UTC1h 30m
2026-05-18 JAL3009 NRT → ITM May 18, 09:50 UTCMay 18, 10:40 UTC50m
2026-05-18 JAL3006 ITM → NRT May 18, 05:55 UTCMay 18, 06:55 UTC1h 0m
2026-05-18 JAL2464 ASJ → ITM May 18, 03:50 UTCMay 18, 04:30 UTC40m
2026-05-18 JAL2465 ITM → ASJ May 18, 00:45 UTCMay 18, 01:20 UTC35m
2026-05-17 JAL2016 CTS → ITM May 17, 09:10 UTCMay 17, 10:45 UTC1h 35m
2026-05-17 JAL2505 KIX → CTS May 17, 06:30 UTCMay 17, 08:10 UTC1h 40m
2026-05-17 JAL2504 CTS → KIX May 17, 03:35 UTCMay 17, 05:20 UTC1h 45m
2026-05-17 JAL2501 KIX → CTS May 17, 00:40 UTCMay 17, 02:15 UTC1h 35m
2026-05-16 JAL221 HND → KIX May 16, 22:40 UTCMay 16, 23:30 UTC50m
2026-05-16 JAL922 OKA → HND May 16, 12:01 UTCMay 16, 14:05 UTC2h 5m
2026-05-16 JAL923 HND → OKA May 16, 08:31 UTCMay 16, 10:31 UTC2h 0m
2026-05-16 JAL460 TKS → HND May 16, 05:56 UTCMay 16, 07:16 UTC1h 20m
2026-05-16 JAL459 HND → TKS May 16, 04:00 UTCMay 16, 04:45 UTC45m
2026-05-16 JAL552 AKJ → HND May 16, 01:10 UTCMay 16, 02:35 UTC1h 25m
2026-05-15 JAL551 HND → AKJ May 15, 22:55 UTCMay 16, 00:05 UTC1h 10m
2026-05-15 JAL150 AOJ → HND May 15, 11:50 UTCMay 15, 12:45 UTC55m
2026-05-15 JAL149 HND → AOJ May 15, 10:05 UTCMay 15, 11:00 UTC55m
2026-05-15 JAL614 NGS → HND May 15, 07:30 UTCMay 15, 08:55 UTC1h 25m
2026-05-15 JAL611 HND → NGS May 15, 04:50 UTCMay 15, 06:00 UTC1h 10m
2026-05-15 JAL494 KCZ → HND May 15, 02:45 UTCMay 15, 03:40 UTC55m

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 JA316J page for operator, model, and routing details .

Mode-S 8511CA frequently asked

What is Mode-S code 8511CA?
8511CA is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA316J.
Where is Mode-S 8511CA registered?
Mode-S code 8511CA is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8511CA broadcasting right now?
Yes. Mode-S 8511CA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8511CA, octal 41210712, decimal 8,720,842.
What flights does 8511CA operate?
Mode-S 8511CA has broadcast 20 distinct callsigns, including JAL668, JAL663, JAL486, JAL485, JAL263.