Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

851CCA

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA348J · BOEING 737-800

Hex
851CCA
Octal
41216312
Decimal
8,723,658
Country
JP
Tail
JA348J
Type
B738
No current signal · last broadcast 25m ago
Flights observed
215
Distinct callsigns
20
Country
JP
Last broadcast
25m ago

Last known position

Most recent position reported by Mode-S 851CCA.

Country allocation

The ICAO 24-bit address 851CCA 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
JTA57 Japan Transocean Air 10 2026-05-20
JTA52 Japan Transocean Air 8 2026-05-20
JTA53 Japan Transocean Air 7 2026-05-24
JTA44 Japan Transocean Air 7 2026-05-19
JTA9 - 6 2026-05-25
JTA50 Japan Transocean Air 6 2026-05-25
JTA5 - 6 2026-05-25
JTA49 Japan Transocean Air 6 2026-05-27
JAL971 Japan Airlines 6 2026-05-22
JTA63 Japan Transocean Air 5 2026-05-11
JTA42 Japan Transocean Air 5 2026-05-26
JTA16 Japan Transocean Air 5 2026-05-20
JTA13 Japan Transocean Air 5 2026-05-21
JTA128 Japan Transocean Air 5 2026-05-26
JTA121 Japan Transocean Air 5 2026-05-26
JAL973 Japan Airlines 5 2026-05-23
JAL933 Japan Airlines 5 2026-05-22
JTA8 - 4 2026-05-25
JTA65 Japan Transocean Air 4 2026-04-21
JTA58 Japan Transocean Air 4 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 JTA45 NGO → OKA May 30, 00:00 UTCMay 30, 00:25 UTC25m
2026-05-29 JTA46 OKA → NGO May 29, 12:50 UTCMay 29, 13:00 UTC10m
2026-05-27 JTA49 NGO → OKA May 27, 10:05 UTCMay 27, 10:50 UTC45m
2026-05-26 JTA121 KIX → MMY May 26, 22:54 UTCMay 27, 08:50 UTC9h 56m
2026-05-26 JTA128 MMY → KIX May 26, 12:35 UTCMay 26, 12:54 UTC20m
2026-05-26 JTA47 NGO → OKA May 26, 06:20 UTCMay 26, 06:34 UTC15m
2026-05-26 JTA42 OKA → NGO May 26, 04:45 UTCMay 26, 05:00 UTC15m
2026-05-25 JTA50 OKA → FUK May 25, 23:24 UTCMay 25, 23:35 UTC10m
2026-05-25 JTA9 - May 25, 11:30 UTCMay 25, 11:55 UTC25m
2026-05-25 JTA8 - May 25, 09:50 UTCMay 25, 10:10 UTC20m
2026-05-25 JTA5 - May 25, 05:35 UTCMay 25, 06:05 UTC30m
2026-05-25 JTA4 - May 25, 04:10 UTCMay 25, 04:30 UTC20m
2026-05-24 JTA1 - May 24, 23:35 UTCMay 24, 23:46 UTC11m
2026-05-24 JTA128 MMY → KIX May 24, 06:20 UTCMay 24, 12:55 UTC6h 35m
2026-05-24 JTA42 OKA → NGO May 24, 04:45 UTCMay 24, 05:00 UTC15m
2026-05-24 JTA53 FUK → OKA May 24, 01:00 UTCMay 24, 01:10 UTC10m
2026-05-23 JTA50 OKA → FUK May 23, 23:30 UTCMay 23, 23:40 UTC10m
2026-05-23 JAL973 KIX → GMP May 23, 06:05 UTCMay 23, 06:55 UTC50m
2026-05-22 JAL971 KIX → GMP May 22, 22:45 UTCMay 23, 04:55 UTC6h 9m
2026-05-22 JAL192 KMQ → HND May 22, 11:45 UTCMay 22, 12:25 UTC40m
2026-05-22 JAL191 HND → KMQ May 22, 10:05 UTCMay 22, 10:30 UTC25m
2026-05-22 JAL933 HND → MMY May 22, 02:20 UTCMay 22, 08:30 UTC6h 10m
2026-05-22 JAL184 KMQ → HND May 22, 00:15 UTCMay 22, 00:55 UTC40m
2026-05-21 JAL183 HND → KMQ May 21, 22:35 UTCMay 21, 23:00 UTC25m
2026-05-21 JAL974 GMP → KIX May 21, 05:45 UTCMay 21, 13:15 UTC7h 30m
2026-05-21 JTA36 OKA → KMQ May 21, 04:00 UTCMay 21, 04:25 UTC25m
2026-05-21 JTA13 OKJ → OKA May 21, 01:10 UTCMay 21, 01:25 UTC15m
2026-05-20 JTA13 OKJ → OKA May 20, 23:50 UTCMay 21, 00:15 UTC25m
2026-05-20 JTA16 OKA → OKJ May 20, 09:45 UTCMay 20, 11:10 UTC1h 25m
2026-05-20 JTA564 MMY → OKA May 20, 08:30 UTCMay 20, 08:40 UTC10m
2026-05-20 JTA57 FUK → OKA May 20, 05:00 UTCMay 20, 05:25 UTC25m
2026-05-20 JTA57 FUK → OKA May 20, 04:05 UTCMay 20, 04:15 UTC10m
2026-05-20 JTA52 OKA → FUK May 20, 02:35 UTCMay 20, 02:45 UTC10m
2026-05-20 JTA52 OKA → FUK May 20, 01:40 UTCMay 20, 01:55 UTC15m
2026-05-19 JTA49 NGO → OKA May 19, 11:30 UTCMay 19, 11:45 UTC15m
2026-05-19 JTA49 NGO → OKA May 19, 10:05 UTCMay 19, 10:25 UTC20m
2026-05-19 JTA44 OKA → NGO May 19, 08:30 UTCMay 19, 08:45 UTC15m
2026-05-19 JTA44 OKA → NGO May 19, 07:05 UTCMay 19, 07:15 UTC10m
2026-05-19 JTA57 FUK → OKA May 19, 05:20 UTCMay 19, 05:40 UTC20m
2026-05-19 JTA57 FUK → OKA May 19, 04:30 UTCMay 19, 04:40 UTC10m
2026-05-19 JTA52 OKA → FUK May 19, 02:40 UTCMay 19, 02:50 UTC10m
2026-05-19 JTA52 OKA → FUK May 19, 01:40 UTCMay 19, 02:05 UTC25m
2026-05-18 JTA49 NGO → OKA May 18, 10:00 UTCMay 18, 11:45 UTC1h 45m
2026-05-18 JTA44 OKA → NGO May 18, 07:05 UTCMay 18, 08:50 UTC1h 45m
2026-05-18 JTA57 FUK → OKA May 18, 05:15 UTCMay 18, 05:30 UTC15m
2026-05-18 JTA57 FUK → OKA May 18, 04:15 UTCMay 18, 04:25 UTC10m
2026-05-18 JTA52 OKA → FUK May 18, 01:35 UTCMay 18, 02:00 UTC25m
2026-05-17 JTA9 - May 17, 13:05 UTCMay 17, 13:15 UTC10m
2026-05-17 JTA9 - May 17, 11:45 UTCMay 17, 12:20 UTC35m
2026-05-17 JTA8 - May 17, 08:55 UTCMay 17, 10:40 UTC1h 45m

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 JA348J page for operator, model, and routing details .

Mode-S 851CCA frequently asked

What is Mode-S code 851CCA?
851CCA is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA348J.
Where is Mode-S 851CCA registered?
Mode-S code 851CCA is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 851CCA broadcasting right now?
No active broadcast right now. Last signal was 25m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 851CCA, octal 41216312, decimal 8,723,658.
What flights does 851CCA operate?
Mode-S 851CCA has broadcast 20 distinct callsigns, including JTA57, JTA52, JTA53, JTA44, JTA9.