Apparatus

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sensors Mode-S transponder

84B77F

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA212P · AIRBUS A-320neo

Hex
84B77F
Octal
41133577
Decimal
8,697,727
Country
JP
Tail
JA212P
Type
A20N
No current signal · last broadcast 2h ago
Flights observed
455
Distinct callsigns
20
Country
JP
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 84B77F.

Country allocation

The ICAO 24-bit address 84B77F 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
APJ67 - 14 2026-07-13
APJ701 - 9 2026-07-13
APJ68 - 9 2026-07-13
APJ165 - 9 2026-07-14
APJ714 - 8 2026-07-14
APJ577 - 8 2026-07-12
APJ576 - 8 2026-07-12
APJ568 - 8 2026-07-12
APJ567 - 8 2026-07-12
APJ563 - 8 2026-07-17
APJ559 - 8 2026-07-11
APJ468 - 8 2026-07-12
APJ273 - 8 2026-07-17
APJ166 - 8 2026-07-14
APJ141 - 8 2026-07-14
APJ140 - 8 2026-07-14
APJ921 - 7 2026-07-18
APJ491 - 7 2026-07-13
APJ199 - 7 2026-07-13
APJ132 - 7 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 APJ921 - Jul 18, 00:04 UTCJul 18, 00:29 UTC25m
2026-07-17 APJ930 - Jul 17, 10:10 UTCJul 17, 10:30 UTC20m
2026-07-17 APJ929 - Jul 17, 08:40 UTCJul 17, 08:59 UTC20m
2026-07-17 APJ273 - Jul 17, 05:30 UTCJul 17, 05:45 UTC15m
2026-07-17 APJ273 - Jul 17, 02:50 UTCJul 17, 04:49 UTC2h 0m
2026-07-17 APJ563 - Jul 17, 00:04 UTCJul 17, 01:25 UTC1h 20m
2026-07-16 APJ590 - Jul 16, 12:09 UTCJul 16, 13:15 UTC1h 5m
2026-07-16 APJ119 - Jul 16, 09:15 UTCJul 16, 10:55 UTC1h 40m
2026-07-16 APJ188 KIX → KIX Jul 16, 05:15 UTCJul 16, 08:05 UTC2h 50m
2026-07-15 APJ375 - Jul 15, 22:25 UTCJul 16, 03:55 UTC5h 30m
2026-07-15 APJ203 - Jul 15, 04:00 UTCJul 15, 07:40 UTC3h 40m
2026-07-14 APJ193 KIX → KIX Jul 14, 23:45 UTCJul 15, 02:30 UTC2h 45m
2026-07-14 APJ140 - Jul 14, 11:10 UTCJul 14, 12:10 UTC1h 0m
2026-07-14 APJ141 - Jul 14, 09:00 UTCJul 14, 09:50 UTC50m
2026-07-14 APJ166 - Jul 14, 06:45 UTCJul 14, 07:40 UTC55m
2026-07-14 APJ165 - Jul 14, 05:00 UTCJul 14, 05:50 UTC50m
2026-07-14 APJ714 ICN → KIX Jul 14, 01:35 UTCJul 14, 02:55 UTC1h 20m
2026-07-13 APJ701 KIX → ICN Jul 13, 23:00 UTCJul 14, 00:25 UTC1h 25m
2026-07-13 APJ68 - Jul 13, 17:35 UTCJul 13, 20:55 UTC3h 20m
2026-07-13 APJ67 KIX → HKG Jul 13, 12:50 UTCJul 13, 16:05 UTC3h 15m
2026-07-13 APJ199 KIX → KIX Jul 13, 05:40 UTCJul 13, 08:45 UTC3h 5m
2026-07-13 APJ132 - Jul 13, 03:25 UTCJul 13, 04:25 UTC1h 0m
2026-07-13 APJ491 - Jul 13, 01:25 UTCJul 13, 02:05 UTC40m
2026-07-12 APJ468 - Jul 12, 12:10 UTCJul 12, 13:20 UTC1h 10m
2026-07-12 APJ577 - Jul 12, 09:35 UTCJul 12, 10:55 UTC1h 20m
2026-07-12 APJ576 - Jul 12, 06:10 UTCJul 12, 07:20 UTC1h 10m
2026-07-12 APJ567 - Jul 12, 03:15 UTCJul 12, 04:35 UTC1h 20m
2026-07-12 APJ568 - Jul 12, 00:45 UTCJul 12, 01:55 UTC1h 10m
2026-07-11 APJ559 - Jul 11, 22:20 UTCJul 11, 23:40 UTC1h 20m
2026-07-11 APJ366 - Jul 11, 11:45 UTCJul 11, 13:15 UTC1h 30m
2026-07-11 APJ456 - Jul 11, 08:40 UTCJul 11, 10:20 UTC1h 40m
2026-07-11 APJ563 - Jul 11, 00:00 UTCJul 11, 01:20 UTC1h 20m
2026-07-10 APJ582 CTS → NRT Jul 10, 10:15 UTCJul 10, 11:25 UTC1h 10m
2026-07-10 APJ419 - Jul 10, 08:10 UTCJul 10, 09:00 UTC50m
2026-07-10 APJ137 - Jul 10, 06:00 UTCJul 10, 06:50 UTC50m
2026-07-10 APJ9004 - Jul 10, 02:50 UTCJul 10, 04:40 UTC1h 50m
2026-07-10 APJ563 - Jul 10, 00:10 UTCJul 10, 01:30 UTC1h 20m
2026-07-09 APJ508 - Jul 9, 09:50 UTCJul 9, 12:05 UTC2h 15m
2026-07-09 APJ507 - Jul 9, 05:55 UTCJul 9, 08:10 UTC2h 15m
2026-07-09 APJ572 - Jul 9, 03:10 UTCJul 9, 04:25 UTC1h 15m
2026-07-08 APJ105 - Jul 8, 23:50 UTCJul 9, 01:25 UTC1h 35m
2026-07-08 APJ140 - Jul 8, 11:15 UTCJul 8, 12:15 UTC1h 0m
2026-07-08 APJ141 - Jul 8, 09:15 UTCJul 8, 10:00 UTC45m
2026-07-08 APJ166 - Jul 8, 06:50 UTCJul 8, 07:55 UTC1h 5m
2026-07-08 APJ165 - Jul 8, 04:55 UTCJul 8, 05:50 UTC55m
2026-07-08 APJ714 ICN → KIX Jul 8, 01:40 UTCJul 8, 03:10 UTC1h 30m
2026-07-07 APJ701 KIX → ICN Jul 7, 22:55 UTCJul 8, 00:20 UTC1h 25m
2026-07-07 APJ140 - Jul 7, 11:15 UTCJul 7, 12:20 UTC1h 5m
2026-07-07 APJ141 - Jul 7, 09:05 UTCJul 7, 09:50 UTC45m
2026-07-07 APJ166 - Jul 7, 06:50 UTCJul 7, 07:45 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 JA212P page for operator, model, and routing details .

Mode-S 84B77F frequently asked

What is Mode-S code 84B77F?
84B77F is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA212P.
Where is Mode-S 84B77F registered?
Mode-S code 84B77F is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 84B77F 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 84B77F, octal 41133577, decimal 8,697,727.
What flights does 84B77F operate?
Mode-S 84B77F has broadcast 20 distinct callsigns, including APJ67, APJ701, APJ68, APJ165, APJ714.