Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

841B6A

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA07MC · AIRBUS A-320

Hex
841B6A
Octal
41015552
Decimal
8,657,770
Country
JP
Tail
JA07MC
Type
A320
Broadcasting now · callsign SFJ48 · 26,175 ft
Flights observed
601
Distinct callsigns
20
Country
JP
Last broadcast
Jul 26, 14:00 UTC

Current position

841B6A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 841B6A 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
SFJ97 - 17 2026-06-20
SFJ96 - 17 2026-06-21
SFJ99 - 16 2026-06-20
SFJ98 - 15 2026-06-20
SFJ22 Star Flyer 15 2026-07-23
SFJ21 Star Flyer 15 2026-07-23
SFJ68 Star Flyer 14 2026-07-23
SFJ63 Star Flyer 13 2026-07-24
SFJ59 Star Flyer 13 2026-07-23
SFJ16 Star Flyer 13 2026-07-26
SFJ15 Star Flyer 13 2026-07-26
SFJ93 - 12 2026-07-12
SFJ90 Star Flyer 12 2026-07-24
SFJ77 - 12 2026-07-12
SFJ76 - 12 2026-07-12
SFJ69 Star Flyer 12 2026-07-23
SFJ52 - 12 2026-07-12
SFJ48 Star Flyer 12 2026-07-24
SFJ14 Star Flyer 12 2026-07-26
SFJ13 Star Flyer 12 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SFJ16 UBJ → HND Jul 26, 12:45 UTCJul 26, 13:50 UTC1h 5m
2026-07-26 SFJ15 HND → UBJ Jul 26, 10:30 UTCJul 26, 11:35 UTC1h 5m
2026-07-26 SFJ14 UBJ → HND Jul 26, 08:10 UTCJul 26, 09:20 UTC1h 10m
2026-07-26 SFJ13 HND → UBJ Jul 26, 05:40 UTCJul 26, 06:40 UTC1h 1m
2026-07-26 SFJ12 UBJ → HND Jul 26, 01:00 UTCJul 26, 02:15 UTC1h 15m
2026-07-25 SFJ11 HND → UBJ Jul 25, 22:45 UTCJul 25, 23:50 UTC1h 5m
2026-07-25 SFJ16 UBJ → HND Jul 25, 11:40 UTCJul 25, 12:55 UTC1h 15m
2026-07-25 SFJ15 HND → UBJ Jul 25, 09:20 UTCJul 25, 10:25 UTC1h 5m
2026-07-25 SFJ14 UBJ → HND Jul 25, 06:45 UTCJul 25, 08:15 UTC1h 30m
2026-07-25 SFJ13 HND → UBJ Jul 25, 04:25 UTCJul 25, 05:35 UTC1h 10m
2026-07-25 SFJ12 UBJ → HND Jul 25, 00:55 UTCJul 25, 02:15 UTC1h 20m
2026-07-24 SFJ11 HND → UBJ Jul 24, 22:40 UTCJul 24, 23:45 UTC1h 5m
2026-07-24 SFJ90 KKJ → HND Jul 24, 11:45 UTCJul 24, 13:00 UTC1h 15m
2026-07-24 SFJ85 HND → KKJ Jul 24, 09:25 UTCJul 24, 10:30 UTC1h 5m
2026-07-24 SFJ48 FUK → HND Jul 24, 05:55 UTCJul 24, 07:20 UTC1h 25m
2026-07-24 SFJ63 NGO → FUK Jul 24, 03:25 UTCJul 24, 04:25 UTC1h 0m
2026-07-24 SFJ58 FUK → NGO Jul 24, 01:40 UTCJul 24, 02:25 UTC45m
2026-07-23 SFJ59 NGO → FUK Jul 23, 23:15 UTCJul 23, 23:55 UTC40m
2026-07-23 SFJ68 FUK → NGO Jul 23, 11:30 UTCJul 23, 12:15 UTC45m
2026-07-23 SFJ69 NGO → FUK Jul 23, 09:25 UTCJul 23, 10:05 UTC40m
2026-07-23 SFJ64 FUK → NGO Jul 23, 07:25 UTCJul 23, 08:05 UTC40m
2026-07-23 SFJ49 HND → FUK Jul 23, 04:35 UTCJul 23, 06:00 UTC1h 25m
2026-07-23 SFJ22 KIX → HND Jul 23, 02:35 UTCJul 23, 03:30 UTC55m
2026-07-23 SFJ21 HND → KIX Jul 23, 00:05 UTCJul 23, 01:00 UTC55m
2026-07-22 SFJ90 KKJ → HND Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 SFJ63 NGO → FUK Jul 22, 03:35 UTCJul 22, 04:15 UTC40m
2026-07-22 SFJ58 FUK → NGO Jul 22, 01:35 UTCJul 22, 02:30 UTC55m
2026-07-21 SFJ59 NGO → FUK Jul 21, 23:25 UTCJul 22, 00:05 UTC40m
2026-07-21 SFJ68 - Jul 21, 11:30 UTCJul 21, 12:15 UTC45m
2026-07-21 SFJ69 NGO → FUK Jul 21, 09:20 UTCJul 21, 10:05 UTC45m
2026-07-21 SFJ64 FUK → NGO Jul 21, 07:20 UTCJul 21, 08:05 UTC45m
2026-07-21 SFJ49 HND → FUK Jul 21, 04:35 UTCJul 21, 05:40 UTC1h 5m
2026-07-21 SFJ22 KIX → HND Jul 21, 02:20 UTCJul 21, 03:10 UTC50m
2026-07-21 SFJ21 HND → KIX Jul 21, 00:00 UTCJul 21, 01:05 UTC1h 5m
2026-07-20 SFJ70 KKJ → HND Jul 20, 21:30 UTCJul 20, 22:45 UTC1h 15m
2026-07-20 SFJ95 HND → KKJ Jul 20, 13:05 UTCJul 20, 14:10 UTC1h 5m
2026-07-20 SFJ90 KKJ → HND Jul 20, 10:50 UTCJul 20, 12:00 UTC1h 10m
2026-07-20 SFJ85 HND → KKJ Jul 20, 08:40 UTCJul 20, 09:45 UTC1h 5m
2026-07-20 SFJ48 FUK → HND Jul 20, 06:05 UTCJul 20, 07:40 UTC1h 35m
2026-07-20 SFJ63 NGO → FUK Jul 20, 03:35 UTCJul 20, 04:15 UTC40m
2026-07-20 SFJ58 FUK → NGO Jul 20, 01:30 UTCJul 20, 02:20 UTC50m
2026-07-19 SFJ59 NGO → FUK Jul 19, 23:10 UTCJul 19, 23:55 UTC45m
2026-07-19 SFJ68 - Jul 19, 11:20 UTCJul 19, 12:15 UTC55m
2026-07-19 SFJ69 NGO → FUK Jul 19, 09:20 UTCJul 19, 10:00 UTC40m
2026-07-19 SFJ64 FUK → NGO Jul 19, 07:10 UTCJul 19, 08:05 UTC55m
2026-07-19 SFJ49 HND → FUK Jul 19, 04:35 UTCJul 19, 05:40 UTC1h 5m
2026-07-19 SFJ22 - Jul 19, 02:20 UTCJul 19, 03:15 UTC55m
2026-07-19 SFJ21 HND → KIX Jul 19, 00:05 UTCJul 19, 01:00 UTC55m
2026-07-18 SFJ70 KKJ → HND Jul 18, 21:30 UTCJul 18, 22:45 UTC1h 15m
2026-07-18 SFJ95 HND → KKJ Jul 18, 13:05 UTCJul 18, 14:10 UTC1h 5m

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 JA07MC page for operator, model, and routing details .

Mode-S 841B6A frequently asked

What is Mode-S code 841B6A?
841B6A is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA07MC.
Where is Mode-S 841B6A registered?
Mode-S code 841B6A is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 841B6A broadcasting right now?
Yes. Mode-S 841B6A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 841B6A, octal 41015552, decimal 8,657,770.
What flights does 841B6A operate?
Mode-S 841B6A has broadcast 20 distinct callsigns, including SFJ97, SFJ96, SFJ99, SFJ98, SFJ22.