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sensors Mode-S transponder

86CF91

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA809X · BOEING 737-800

Hex
86CF91
Octal
41547621
Decimal
8,834,961
Country
JP
Tail
JA809X
Type
B738
Broadcasting now · callsign SNJ31 · 11,075 ft
Flights observed
351
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 22:15 UTC

Current position

86CF91 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 86CF91 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
SNJ11 - 12 2026-06-18
SNJ97 - 11 2026-06-19
SNJ18 - 11 2026-06-19
SNJ14 - 11 2026-06-19
SNJ98 - 10 2026-06-19
SNJ15 - 10 2026-06-19
SNJ62 Skynet Asia Airways 9 2026-07-24
SNJ23 Skynet Asia Airways 9 2026-07-26
SNJ65 - 8 2026-06-14
SNJ32 Skynet Asia Airways 8 2026-07-25
SNJ31 Skynet Asia Airways 8 2026-07-24
SNJ20 Skynet Asia Airways 8 2026-07-25
SNJ17 Skynet Asia Airways 8 2026-07-25
SNJ77 - 7 2026-06-13
SNJ59T - 7 2026-06-14
SNJ57 Skynet Asia Airways 7 2026-07-25
SNJ56 - 7 2026-06-15
SNJ34 Skynet Asia Airways 7 2026-07-24
SNJ12 - 7 2026-06-12
SNJ71 Skynet Asia Airways 6 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SNJ21 HND → OKA Jul 26, 21:30 UTCJul 26, 22:15 UTC45m
2026-07-26 SNJ26 OKA → HND Jul 26, 13:00 UTCJul 26, 15:00 UTC2h 0m
2026-07-26 SNJ23 HND → OKA Jul 26, 06:50 UTCJul 26, 08:50 UTC2h 0m
2026-07-25 SNJ20 KMJ → HND Jul 25, 10:45 UTCJul 25, 12:10 UTC1h 25m
2026-07-25 SNJ17 HND → KMJ Jul 25, 08:05 UTCJul 25, 09:20 UTC1h 15m
2026-07-25 SNJ60 KMI → HND Jul 25, 06:00 UTCJul 25, 07:00 UTC1h 0m
2026-07-25 SNJ57 HND → KMI Jul 25, 03:40 UTCJul 25, 04:40 UTC1h 0m
2026-07-25 SNJ32 NGS → HND Jul 25, 01:05 UTCJul 25, 02:35 UTC1h 30m
2026-07-24 SNJ31 HND → NGS Jul 24, 22:45 UTCJul 25, 00:05 UTC1h 20m
2026-07-24 SNJ62 KMI → HND Jul 24, 08:40 UTCJul 24, 09:50 UTC1h 10m
2026-07-24 SNJ59 HND → KMI Jul 24, 06:30 UTCJul 24, 07:25 UTC55m
2026-07-24 SNJ34 NGS → HND Jul 24, 03:40 UTCJul 24, 05:15 UTC1h 35m
2026-07-24 SNJ33 HND → NGS Jul 24, 01:15 UTCJul 24, 02:40 UTC1h 25m
2026-07-23 SNJ9078 - Jul 23, 17:10 UTCJul 23, 19:15 UTC2h 5m
2026-06-22 SNJ9077 - Jun 22, 18:15 UTCJun 22, 20:39 UTC2h 25m
2026-06-22 SNJ64 - Jun 22, 05:10 UTCJun 22, 11:00 UTC5h 50m
2026-06-22 SNJ126 - Jun 22, 03:40 UTCJun 22, 04:24 UTC45m
2026-06-21 SNJ51 - Jun 21, 22:04 UTCJun 21, 23:05 UTC1h 0m
2026-06-21 SNJ64 UKB → HND Jun 21, 05:15 UTCJun 21, 11:10 UTC5h 55m
2026-06-21 SNJ126 - Jun 21, 03:44 UTCJun 21, 04:24 UTC40m
2026-06-20 SNJ51 - Jun 20, 22:10 UTCJun 20, 23:10 UTC1h 0m
2026-06-20 SNJ38 - Jun 20, 12:24 UTCJun 20, 13:49 UTC1h 25m
2026-06-20 SNJ37 - Jun 20, 10:04 UTCJun 20, 11:30 UTC1h 25m
2026-06-20 SNJ24 - Jun 20, 03:49 UTCJun 20, 08:59 UTC5h 10m
2026-06-20 SNJ116 - Jun 20, 02:09 UTCJun 20, 02:24 UTC15m
2026-06-19 SNJ71 HND → KOJ Jun 19, 23:09 UTCJun 20, 00:14 UTC1h 5m
2026-06-19 SNJ98 - Jun 19, 11:04 UTCJun 19, 12:19 UTC1h 15m
2026-06-19 SNJ97 - Jun 19, 08:34 UTCJun 19, 09:40 UTC1h 5m
2026-06-19 SNJ18 - Jun 19, 06:20 UTCJun 19, 07:34 UTC1h 15m
2026-06-19 SNJ15 - Jun 19, 03:34 UTCJun 19, 04:44 UTC1h 10m
2026-06-19 SNJ14 - Jun 19, 01:04 UTCJun 19, 02:24 UTC1h 20m
2026-06-18 SNJ11 - Jun 18, 22:40 UTCJun 19, 00:10 UTC1h 29m
2026-06-18 SNJ20 - Jun 18, 10:20 UTCJun 18, 11:25 UTC1h 5m
2026-06-18 SNJ17 - Jun 18, 07:55 UTCJun 18, 09:15 UTC1h 20m
2026-06-18 SNJ60 - Jun 18, 05:50 UTCJun 18, 06:50 UTC1h 0m
2026-06-18 SNJ57 - Jun 18, 03:30 UTCJun 18, 04:35 UTC1h 5m
2026-06-18 SNJ32 - Jun 18, 00:55 UTCJun 18, 02:05 UTC1h 10m
2026-06-17 SNJ31 - Jun 17, 22:35 UTCJun 18, 00:00 UTC1h 25m
2026-06-17 SNJ38 - Jun 17, 12:25 UTCJun 17, 13:50 UTC1h 25m
2026-06-17 SNJ37 - Jun 17, 10:05 UTCJun 17, 11:35 UTC1h 30m
2026-06-17 SNJ24 - Jun 17, 04:10 UTCJun 17, 09:20 UTC5h 10m
2026-06-16 SNJ71 HND → KOJ Jun 16, 23:05 UTCJun 17, 02:25 UTC3h 20m
2026-06-16 SNJ20 - Jun 16, 10:25 UTCJun 16, 11:30 UTC1h 5m
2026-06-16 SNJ17 - Jun 16, 08:00 UTCJun 16, 09:25 UTC1h 25m
2026-06-16 SNJ57 HND → HND Jun 16, 03:20 UTCJun 16, 06:59 UTC3h 40m
2026-06-16 SNJ32 - Jun 16, 00:50 UTCJun 16, 02:20 UTC1h 30m
2026-06-15 SNJ31 - Jun 15, 22:30 UTCJun 15, 23:50 UTC1h 20m
2026-06-15 SNJ23 HND → HND Jun 15, 05:04 UTCJun 15, 13:34 UTC8h 30m
2026-06-15 SNJ56 - Jun 15, 02:44 UTCJun 15, 03:45 UTC1h 0m
2026-06-15 SNJ107 - Jun 15, 00:45 UTCJun 15, 01:00 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 JA809X page for operator, model, and routing details .

Mode-S 86CF91 frequently asked

What is Mode-S code 86CF91?
86CF91 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA809X.
Where is Mode-S 86CF91 registered?
Mode-S code 86CF91 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 86CF91 broadcasting right now?
Yes. Mode-S 86CF91 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 86CF91, octal 41547621, decimal 8,834,961.
What flights does 86CF91 operate?
Mode-S 86CF91 has broadcast 20 distinct callsigns, including SNJ11, SNJ97, SNJ18, SNJ14, SNJ98.