Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

868041

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA737X · BOEING 737-800

Hex
868041
Octal
41500101
Decimal
8,814,657
Country
JP
Tail
JA737X
Type
B738
No current signal · last broadcast Jul 26, 12:40 UTC
Flights observed
553
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 12:40 UTC

Last known position

Most recent position reported by Mode-S 868041.

Country allocation

The ICAO 24-bit address 868041 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
SKY790 Skymark Airlines 8 2026-07-25
SKY703 Skymark Airlines 8 2026-07-24
SKY531 Skymark Airlines 8 2026-07-25
SKY767 Skymark Airlines 7 2026-07-25
SKY766 Skymark Airlines 7 2026-07-25
SKY719 Skymark Airlines 7 2026-07-26
SKY714 - 7 2026-07-08
SKY597 - 7 2026-07-14
SKY517 - 7 2026-07-05
SKY514 Skymark Airlines 7 2026-07-26
SKY186 Skymark Airlines 7 2026-07-26
SKY183 Skymark Airlines 7 2026-07-23
SKY174 Skymark Airlines 7 2026-07-26
SKY142 Skymark Airlines 7 2026-07-24
SKY141 Skymark Airlines 7 2026-07-24
SKY116 - 7 2026-07-05
SKY108 Skymark Airlines 7 2026-07-24
SKY613 - 6 2026-07-14
SKY554 Skymark Airlines 6 2026-07-25
SKY553 Skymark Airlines 6 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKY186 UKB → IBR Jul 26, 11:05 UTCJul 26, 12:40 UTC1h 35m
2026-07-26 SKY174 CTS → UKB Jul 26, 08:40 UTCJul 26, 10:10 UTC1h 30m
2026-07-26 SKY719 HND → CTS Jul 26, 06:25 UTCJul 26, 07:35 UTC1h 11m
2026-07-26 SKY514 OKA → HND Jul 26, 02:20 UTCJul 26, 05:20 UTC3h 0m
2026-07-25 SKY553 NGO → OKA Jul 25, 23:20 UTCJul 26, 00:55 UTC1h 35m
2026-07-25 SKY766 NGO → CTS Jul 25, 10:45 UTCJul 25, 12:00 UTC1h 15m
2026-07-25 SKY767 NGO → CTS Jul 25, 08:25 UTCJul 25, 09:45 UTC1h 20m
2026-07-25 SKY554 OKA → NGO Jul 25, 07:05 UTCJul 25, 07:20 UTC15m
2026-07-25 SKY554 OKA → NGO Jul 25, 05:45 UTCJul 25, 06:00 UTC15m
2026-07-25 SKY531 IBR → OKA Jul 25, 02:15 UTCJul 25, 04:35 UTC2h 20m
2026-07-25 SKY790 CTS → IBR Jul 25, 00:00 UTCJul 25, 01:00 UTC1h 0m
2026-07-24 SKY703 HND → CTS Jul 24, 22:00 UTCJul 24, 23:15 UTC1h 15m
2026-07-24 SKY308 KOJ → HND Jul 24, 12:15 UTCJul 24, 13:25 UTC1h 10m
2026-07-24 SKY307 HND → KOJ Jul 24, 06:55 UTCJul 24, 08:00 UTC1h 5m
2026-07-24 SKY108 UKB → HND Jul 24, 04:35 UTCJul 24, 05:30 UTC55m
2026-07-24 SKY142 NGS → UKB Jul 24, 02:20 UTCJul 24, 03:15 UTC55m
2026-07-24 SKY141 UKB → NGS Jul 24, 00:35 UTCJul 24, 01:30 UTC55m
2026-07-23 SKY183 IBR → UKB Jul 23, 22:45 UTCJul 23, 23:45 UTC1h 0m
2026-07-23 SKY186 - Jul 23, 10:35 UTCJul 23, 11:25 UTC50m
2026-07-23 SKY174 CTS → UKB Jul 23, 08:05 UTCJul 23, 09:35 UTC1h 30m
2026-07-23 SKY719 HND → CTS Jul 23, 05:50 UTCJul 23, 07:10 UTC1h 20m
2026-07-23 SKY514 OKA → HND Jul 23, 02:10 UTCJul 23, 04:20 UTC2h 10m
2026-07-23 SKY553 NGO → OKA Jul 23, 00:40 UTCJul 23, 00:55 UTC15m
2026-07-22 SKY553 NGO → OKA Jul 22, 23:15 UTCJul 22, 23:35 UTC20m
2026-07-22 SKY766 - Jul 22, 11:10 UTCJul 22, 11:55 UTC45m
2026-07-22 SKY531 IBR → OKA Jul 22, 02:05 UTCJul 22, 04:20 UTC2h 15m
2026-07-22 SKY790 CTS → IBR Jul 22, 00:05 UTCJul 22, 01:15 UTC1h 10m
2026-07-21 SKY703 HND → CTS Jul 21, 22:05 UTCJul 21, 23:15 UTC1h 10m
2026-07-21 SKY308 KOJ → HND Jul 21, 11:45 UTCJul 21, 12:55 UTC1h 10m
2026-07-21 SKY307 HND → KOJ Jul 21, 07:45 UTCJul 21, 08:45 UTC1h 0m
2026-07-21 SKY108 UKB → HND Jul 21, 04:10 UTCJul 21, 05:10 UTC1h 0m
2026-07-21 SKY142 NGS → UKB Jul 21, 02:30 UTCJul 21, 03:20 UTC50m
2026-07-21 SKY141 UKB → NGS Jul 21, 00:30 UTCJul 21, 01:25 UTC55m
2026-07-20 SKY183 - Jul 20, 22:40 UTCJul 20, 23:45 UTC1h 5m
2026-07-20 SKY186 - Jul 20, 10:35 UTCJul 20, 11:30 UTC55m
2026-07-20 SKY174 CTS → UKB Jul 20, 08:10 UTCJul 20, 09:45 UTC1h 35m
2026-07-20 SKY719 HND → CTS Jul 20, 05:55 UTCJul 20, 07:05 UTC1h 10m
2026-07-20 SKY514 - Jul 20, 02:15 UTCJul 20, 04:25 UTC2h 10m
2026-07-19 SKY553 NGO → OKA Jul 19, 23:15 UTCJul 20, 00:55 UTC1h 40m
2026-07-19 SKY766 - Jul 19, 10:35 UTCJul 19, 11:55 UTC1h 20m
2026-07-19 SKY767 NGO → CTS Jul 19, 08:20 UTCJul 19, 09:45 UTC1h 25m
2026-07-19 SKY554 - Jul 19, 05:40 UTCJul 19, 07:15 UTC1h 35m
2026-07-19 SKY531 - Jul 19, 02:10 UTCJul 19, 04:25 UTC2h 15m
2026-07-19 SKY790 - Jul 19, 00:10 UTCJul 19, 01:15 UTC1h 5m
2026-07-18 SKY703 HND → CTS Jul 18, 22:00 UTCJul 18, 23:15 UTC1h 15m
2026-07-18 SKY730 - Jul 18, 12:05 UTCJul 18, 13:25 UTC1h 20m
2026-07-18 SKY179 UKB → CTS Jul 18, 09:40 UTCJul 18, 11:15 UTC1h 35m
2026-07-18 SKY148 NGS → UKB Jul 18, 07:50 UTCJul 18, 08:50 UTC1h 0m
2026-07-18 SKY145 - Jul 18, 06:10 UTCJul 18, 06:55 UTC45m
2026-07-18 SKY105 HND → UKB Jul 18, 04:20 UTCJul 18, 05:15 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 JA737X page for operator, model, and routing details .

Mode-S 868041 frequently asked

What is Mode-S code 868041?
868041 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA737X.
Where is Mode-S 868041 registered?
Mode-S code 868041 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 868041 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 868041, octal 41500101, decimal 8,814,657.
What flights does 868041 operate?
Mode-S 868041 has broadcast 20 distinct callsigns, including SKY790, SKY703, SKY531, SKY767, SKY766.