Apparatus

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sensors Mode-S transponder

86D237

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA812X · BOEING 737-800

Hex
86D237
Octal
41551067
Decimal
8,835,639
Country
JP
Tail
JA812X
Type
B738
No current signal · last broadcast 2h ago
Flights observed
281
Distinct callsigns
20
Country
JP
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 86D237.

Country allocation

The ICAO 24-bit address 86D237 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
SNJ25 Skynet Asia Airways 10 2026-05-27
SNJ129 Skynet Asia Airways 9 2026-05-20
SNJ125 Skynet Asia Airways 9 2026-05-21
SNJ121 Skynet Asia Airways 8 2026-05-17
SNJ96 Skynet Asia Airways 7 2026-05-27
SNJ93 Skynet Asia Airways 7 2026-05-27
SNJ71 Skynet Asia Airways 7 2026-05-16
SNJ61 Skynet Asia Airways 7 2026-05-30
SNJ24 Skynet Asia Airways 7 2026-05-17
SNJ16 Skynet Asia Airways 7 2026-05-30
SNJ13 Skynet Asia Airways 7 2026-05-30
SNJ127 Skynet Asia Airways 7 2026-05-15
SNJ102 Skynet Asia Airways 7 2026-05-21
SNJ95 Skynet Asia Airways 6 2026-05-27
SNJ94 Skynet Asia Airways 6 2026-05-27
SNJ92 Skynet Asia Airways 6 2026-05-29
SNJ91 Skynet Asia Airways 6 2026-05-29
SNJ64 Skynet Asia Airways 6 2026-05-22
SNJ52 Skynet Asia Airways 6 2026-05-26
SNJ38 Skynet Asia Airways 6 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 SNJ109 NGO → KMI May 30, 10:50 UTCMay 30, 11:10 UTC20m
2026-05-30 SNJ110 KMI → NGO May 30, 09:25 UTCMay 30, 09:50 UTC25m
2026-05-30 SNJ61 HND → KMI May 30, 06:40 UTCMay 30, 07:45 UTC1h 5m
2026-05-30 SNJ16 KMJ → HND May 30, 04:30 UTCMay 30, 05:40 UTC1h 10m
2026-05-30 SNJ13 HND → KMJ May 30, 02:00 UTCMay 30, 03:30 UTC1h 30m
2026-05-29 SNJ92 OIT → HND May 29, 23:50 UTCMay 30, 00:50 UTC1h 0m
2026-05-29 SNJ91 HND → OIT May 29, 21:40 UTCMay 29, 22:50 UTC1h 10m
2026-05-29 SNJ20 KMJ → HND May 29, 11:00 UTCMay 29, 12:00 UTC1h 0m
2026-05-29 SNJ17 HND → KMJ May 29, 08:25 UTCMay 29, 09:50 UTC1h 25m
2026-05-29 SNJ60 KMI → HND May 29, 06:40 UTCMay 29, 07:25 UTC45m
2026-05-29 SNJ57 HND → KMI May 29, 03:55 UTCMay 29, 05:00 UTC1h 5m
2026-05-29 SNJ32 NGS → HND May 29, 01:00 UTCMay 29, 02:15 UTC1h 15m
2026-05-28 SNJ31 HND → NGS May 28, 22:30 UTCMay 28, 23:55 UTC1h 25m
2026-05-28 SNJ9026 - May 28, 13:45 UTCMay 28, 14:35 UTC50m
2026-05-27 SNJ25 HND → OKA May 27, 10:45 UTCMay 27, 11:30 UTC45m
2026-05-27 SNJ96 OIT → HND May 27, 08:20 UTCMay 27, 09:30 UTC1h 10m
2026-05-27 SNJ95 HND → OIT May 27, 05:59 UTCMay 27, 07:05 UTC1h 6m
2026-05-27 SNJ94 OIT → HND May 27, 03:29 UTCMay 27, 04:39 UTC1h 10m
2026-05-27 SNJ93 HND → OIT May 27, 01:19 UTCMay 27, 02:19 UTC1h 0m
2026-05-26 SNJ52 KMI → HND May 26, 23:14 UTCMay 27, 00:04 UTC50m
2026-05-26 SNJ109 NGO → KMI May 26, 10:54 UTCMay 26, 11:24 UTC30m
2026-05-26 SNJ110 KMI → NGO May 26, 09:15 UTCMay 26, 09:45 UTC30m
2026-05-26 SNJ59T HND → KMI May 26, 05:40 UTCMay 26, 06:34 UTC55m
2026-05-26 SNJ34 NGS → HND May 26, 03:15 UTCMay 26, 04:30 UTC1h 15m
2026-05-26 SNJ33 HND → NGS May 26, 00:44 UTCMay 26, 02:04 UTC1h 20m
2026-05-25 SNJ72 KOJ → HND May 25, 22:34 UTCMay 25, 23:49 UTC1h 15m
2026-05-25 SNJ77 HND → KOJ May 25, 06:30 UTCMay 25, 07:30 UTC1h 0m
2026-05-25 SNJ58 KMI → HND May 25, 04:20 UTCMay 25, 05:15 UTC55m
2026-05-25 SNJ55 HND → KMI May 25, 01:55 UTCMay 25, 02:35 UTC40m
2026-05-24 SNJ12 KMJ → HND May 24, 23:05 UTCMay 24, 23:46 UTC41m
2026-05-24 SNJ19 HND → KMJ May 24, 09:25 UTCMay 24, 10:55 UTC1h 30m
2026-05-24 SNJ36 NGS → HND May 24, 06:50 UTCMay 24, 08:25 UTC1h 35m
2026-05-24 SNJ35 HND → NGS May 24, 04:05 UTCMay 24, 05:35 UTC1h 30m
2026-05-24 SNJ74 KOJ → HND May 24, 01:25 UTCMay 24, 02:40 UTC1h 15m
2026-05-23 SNJ115 NGO → KOJ May 23, 23:20 UTCMay 24, 00:00 UTC40m
2026-05-23 SNJ79 HND → KOJ May 23, 09:35 UTCMay 23, 12:50 UTC3h 15m
2026-05-23 SNJ78 KOJ → HND May 23, 07:05 UTCMay 23, 08:10 UTC1h 5m
2026-05-23 SNJ75 HND → KOJ May 23, 04:30 UTCMay 23, 05:40 UTC1h 10m
2026-05-22 SNJ21 HND → OKA May 22, 21:30 UTCMay 23, 03:15 UTC5h 44m
2026-05-22 SNJ64 KMI → HND May 22, 05:50 UTCMay 22, 11:55 UTC6h 5m
2026-05-22 SNJ126 OKA → UKB May 22, 04:15 UTCMay 22, 04:55 UTC40m
2026-05-21 SNJ51 HND → KMI May 21, 22:30 UTCMay 21, 23:30 UTC1h 0m
2026-05-21 SNJ80 KOJ → HND May 21, 12:30 UTCMay 21, 13:10 UTC40m
2026-05-21 SNJ117 NGO → KOJ May 21, 09:45 UTCMay 21, 10:15 UTC30m
2026-05-21 SNJ122 OKA → NGO May 21, 08:05 UTCMay 21, 08:25 UTC20m
2026-05-21 SNJ102 OKA → FUK May 21, 02:50 UTCMay 21, 03:05 UTC15m
2026-05-21 SNJ125 UKB → OKA May 21, 00:25 UTCMay 21, 00:45 UTC20m
2026-05-20 SNJ125 UKB → OKA May 20, 23:00 UTCMay 20, 23:35 UTC35m
2026-05-20 SNJ130 OKA → UKB May 20, 11:30 UTCMay 20, 13:05 UTC1h 35m
2026-05-20 SNJ129 UKB → OKA May 20, 10:05 UTCMay 20, 10:20 UTC15m

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 JA812X page for operator, model, and routing details .

Mode-S 86D237 frequently asked

What is Mode-S code 86D237?
86D237 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA812X.
Where is Mode-S 86D237 registered?
Mode-S code 86D237 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 86D237 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 86D237, octal 41551067, decimal 8,835,639.
What flights does 86D237 operate?
Mode-S 86D237 has broadcast 20 distinct callsigns, including SNJ25, SNJ129, SNJ125, SNJ121, SNJ96.