Apparatus

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sensors Mode-S transponder

847517

ICAO 24-bit transponder address · allocated to Japan

Currently assigned to JA17KZ · BOEING 747-8

Hex
847517
Octal
41072427
Decimal
8,680,727
Country
JP
Tail
JA17KZ
Type
B748
No current signal · last broadcast 2h ago
Flights observed
235
Distinct callsigns
20
Country
JP
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 847517.

Country allocation

The ICAO 24-bit address 847517 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
NCA203 - 19 2026-07-13
NCA134 Nippon Cargo Airlines 16 2026-06-10
NCA049 Nippon Cargo Airlines 16 2026-07-08
NCA004 - 16 2026-07-07
NCA202 - 14 2026-07-13
NCA5175 - 12 2026-07-11
NCA108 - 12 2026-07-14
NCA101 - 11 2026-07-09
NCA038 - 11 2026-06-25
NCA225 - 9 2026-07-03
NCA5164 - 8 2026-07-10
NCA143 Nippon Cargo Airlines 8 2026-06-10
NCA242 Nippon Cargo Airlines 7 2026-05-29
NCA227 - 7 2026-07-02
NCA039 - 7 2026-06-26
NCA263 Nippon Cargo Airlines 6 2026-06-13
NCA241 Nippon Cargo Airlines 6 2026-05-29
NCA115 - 6 2026-05-24
NCA114 - 6 2026-05-23
NCA6121 - 5 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 NCA108 - Jul 14, 03:55 UTCJul 14, 04:25 UTC30m
2026-07-13 NCA202 HKG → NRT Jul 13, 21:35 UTCJul 14, 01:25 UTC3h 50m
2026-07-13 NCA203 NRT → HKG Jul 13, 13:10 UTCJul 13, 16:55 UTC3h 45m
2026-07-13 NCA226 - Jul 13, 01:55 UTCJul 13, 10:50 UTC8h 55m
2026-07-12 NCA228 - Jul 12, 14:01 UTCJul 12, 23:10 UTC9h 10m
2026-07-11 NCA5175 - Jul 11, 21:40 UTCJul 12, 04:20 UTC6h 40m
2026-07-11 NCA5175 JFK → ANC Jul 11, 13:20 UTCJul 11, 20:10 UTC6h 50m
2026-07-11 NCA5175 DFW → JFK Jul 11, 07:40 UTCJul 11, 10:25 UTC2h 45m
2026-07-10 NCA5164 ANC → DFW Jul 10, 23:20 UTCJul 11, 05:01 UTC5h 40m
2026-07-10 NCA5164 - Jul 10, 14:50 UTCJul 10, 21:25 UTC6h 35m
2026-07-09 NCA101 - Jul 9, 15:10 UTCJul 10, 01:50 UTC10h 40m
2026-07-09 NCA108 - Jul 9, 02:40 UTCJul 9, 12:05 UTC9h 25m
2026-07-08 NCA049 AMS → MXP Jul 8, 11:00 UTCJul 8, 23:20 UTC12h 20m
2026-07-08 NCA049 AMS → MXP Jul 8, 07:00 UTCJul 8, 08:20 UTC1h 20m
2026-07-07 NCA004 ANC → AMS Jul 7, 20:05 UTCJul 8, 04:00 UTC7h 55m
2026-07-07 NCA004 - Jul 7, 11:25 UTCJul 7, 17:40 UTC6h 15m
2026-07-06 NCA101 - Jul 6, 14:20 UTCJul 7, 01:15 UTC10h 55m
2026-07-06 NCA108 - Jul 6, 01:25 UTCJul 6, 10:40 UTC9h 15m
2026-07-05 NCA202 HKG → NRT Jul 5, 18:40 UTCJul 5, 22:30 UTC3h 50m
2026-07-05 NCA203 - Jul 5, 15:25 UTCJul 5, 15:40 UTC15m
2026-07-05 NCA203 - Jul 5, 11:50 UTCJul 5, 14:50 UTC3h 0m
2026-07-04 NCA5175 ANC → NRT Jul 4, 21:55 UTCJul 5, 04:30 UTC6h 35m
2026-07-04 NCA5175 JFK → ANC Jul 4, 13:55 UTCJul 4, 20:30 UTC6h 35m
2026-07-04 NCA5175 DFW → JFK Jul 4, 07:45 UTCJul 4, 10:30 UTC2h 45m
2026-07-03 NCA5164 ANC → DFW Jul 3, 23:20 UTCJul 4, 04:55 UTC5h 35m
2026-07-03 NCA5164 - Jul 3, 14:45 UTCJul 3, 21:35 UTC6h 50m
2026-07-03 NCA225 - Jul 3, 01:55 UTCJul 3, 11:25 UTC9h 30m
2026-07-02 NCA227 - Jul 2, 14:10 UTCJul 2, 23:20 UTC9h 10m
2026-07-02 NCA225 - Jul 2, 01:55 UTCJul 2, 10:50 UTC8h 55m
2026-07-01 NCA202 HKG → NRT Jul 1, 19:00 UTCJul 1, 22:45 UTC3h 45m
2026-07-01 NCA203 - Jul 1, 12:05 UTCJul 1, 16:00 UTC3h 55m
2026-06-30 NCA5175 DFW → JFK Jun 30, 20:10 UTCJul 1, 02:50 UTC6h 40m
2026-06-30 NCA5175 DFW → JFK Jun 30, 11:40 UTCJun 30, 18:25 UTC6h 45m
2026-06-30 NCA5175 DFW → JFK Jun 30, 06:20 UTCJun 30, 09:25 UTC3h 5m
2026-06-29 NCA5164 NRT → ANC Jun 29, 22:00 UTCJun 30, 03:40 UTC5h 41m
2026-06-29 NCA5164 NRT → ANC Jun 29, 14:19 UTCJun 29, 20:44 UTC6h 25m
2026-06-29 NCA227D - Jun 29, 03:20 UTCJun 29, 11:45 UTC8h 25m
2026-06-28 NCA202 - Jun 28, 20:19 UTCJun 28, 23:54 UTC3h 35m
2026-06-28 NCA203 - Jun 28, 15:55 UTCJun 28, 16:19 UTC25m
2026-06-28 NCA203 - Jun 28, 11:59 UTCJun 28, 15:14 UTC3h 15m
2026-06-27 NCA101 - Jun 27, 18:45 UTCJun 28, 05:55 UTC11h 10m
2026-06-27 NCA108 - Jun 27, 06:40 UTCJun 27, 16:00 UTC9h 20m
2026-06-26 NCA039 FRA → NRT Jun 26, 15:05 UTCJun 27, 03:44 UTC12h 40m
2026-06-25 NCA038 ANC → FRA Jun 25, 22:49 UTCJun 26, 07:30 UTC8h 40m
2026-06-25 NCA038 - Jun 25, 14:44 UTCJun 25, 21:10 UTC6h 25m
2026-06-25 NCA227D - Jun 25, 02:14 UTCJun 25, 10:39 UTC8h 25m
2026-06-24 NCA202 HKG → NRT Jun 24, 19:24 UTCJun 24, 23:20 UTC3h 55m
2026-06-24 NCA203 - Jun 24, 12:25 UTCJun 24, 16:09 UTC3h 45m
2026-06-24 NCA225 - Jun 24, 00:49 UTCJun 24, 10:10 UTC9h 20m
2026-06-23 NCA202 HKG → NRT Jun 23, 17:54 UTCJun 23, 21:34 UTC3h 40m

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 JA17KZ page for operator, model, and routing details .

Mode-S 847517 frequently asked

What is Mode-S code 847517?
847517 is an ICAO 24-bit transponder address. Allocated to Japan. Assigned to JA17KZ.
Where is Mode-S 847517 registered?
Mode-S code 847517 is allocated to Japan (JP). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 847517 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 847517, octal 41072427, decimal 8,680,727.
What flights does 847517 operate?
Mode-S 847517 has broadcast 20 distinct callsigns, including NCA203, NCA134, NCA049, NCA004, NCA202.