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
- Flights observed
- 128
- Distinct callsigns
- 20
- Country
- JP
- Last broadcast
- 2h ago
Last known position
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 |
|---|---|---|---|
| NCA134 | Nippon Cargo Airlines | 10 | 2026-05-20 |
| NCA049 | Nippon Cargo Airlines | 10 | 2026-05-28 |
| NCA004 | - | 10 | 2026-05-27 |
| NCA038 | Nippon Cargo Airlines | 9 | 2026-04-30 |
| NCA242 | Nippon Cargo Airlines | 7 | 2026-05-29 |
| NCA241 | Nippon Cargo Airlines | 6 | 2026-05-29 |
| NCA115 | - | 6 | 2026-05-24 |
| NCA114 | - | 6 | 2026-05-23 |
| NCA039 | Nippon Cargo Airlines | 6 | 2026-05-01 |
| NCA6121 | - | 5 | 2026-04-13 |
| NCA227 | Nippon Cargo Airlines | 5 | 2026-05-29 |
| NCA225 | Nippon Cargo Airlines | 5 | 2026-05-30 |
| NCA203 | Nippon Cargo Airlines | 5 | 2026-05-26 |
| NCA143 | Nippon Cargo Airlines | 5 | 2026-05-20 |
| NCA263 | Nippon Cargo Airlines | 4 | 2026-05-09 |
| NCA209 | Nippon Cargo Airlines | 4 | 2026-05-13 |
| NCA108 | Nippon Cargo Airlines | 4 | 2026-05-24 |
| NCA101 | Nippon Cargo Airlines | 4 | 2026-05-24 |
| NCA226D | - | 3 | 2026-05-19 |
| NCA206 | Nippon Cargo Airlines | 3 | 2026-05-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | NCA225 | NRT → PVG | May 30, 01:35 UTC | May 30, 03:10 UTC | 1h 35m |
| 2026-05-29 | NCA227 | NRT → PVG | May 29, 14:00 UTC | May 29, 23:00 UTC | 9h 0m |
| 2026-05-29 | NCA242 | TPE → NRT | May 29, 10:10 UTC | May 29, 11:15 UTC | 1h 5m |
| 2026-05-29 | NCA242 | TPE → NRT | May 29, 08:45 UTC | May 29, 08:55 UTC | 10m |
| 2026-05-29 | NCA241 | NRT → TPE | May 29, 05:05 UTC | May 29, 05:25 UTC | 20m |
| 2026-05-29 | NCA241 | NRT → TPE | May 29, 02:25 UTC | May 29, 03:40 UTC | 1h 15m |
| 2026-05-28 | NCA049 | AMS → MXP | May 28, 11:05 UTC | May 28, 23:10 UTC | 12h 5m |
| 2026-05-28 | NCA049 | AMS → MXP | May 28, 07:35 UTC | May 28, 08:50 UTC | 1h 15m |
| 2026-05-27 | NCA004 | ANC → AMS | May 27, 19:25 UTC | May 28, 03:25 UTC | 8h 0m |
| 2026-05-27 | NCA004 | - | May 27, 11:20 UTC | May 27, 17:35 UTC | 6h 15m |
| 2026-05-26 | NCA202 | HKG → NRT | May 26, 18:19 UTC | May 26, 21:59 UTC | 3h 40m |
| 2026-05-26 | NCA203 | NRT → HKG | May 26, 11:00 UTC | May 26, 14:45 UTC | 3h 45m |
| 2026-05-25 | NCA227 | NRT → PVG | May 25, 13:45 UTC | May 25, 22:30 UTC | 8h 45m |
| 2026-05-24 | NCA101 | LAX → NRT | May 24, 23:00 UTC | May 25, 10:00 UTC | 11h 0m |
| 2026-05-24 | NCA108 | NRT → LAX | May 24, 10:25 UTC | May 24, 19:50 UTC | 9h 25m |
| 2026-05-24 | NCA115 | - | May 24, 00:40 UTC | May 24, 07:20 UTC | 6h 40m |
| 2026-05-23 | NCA115 | JFK → ANC | May 23, 16:15 UTC | May 23, 22:50 UTC | 6h 35m |
| 2026-05-23 | NCA114 | ANC → JFK | May 23, 06:50 UTC | May 23, 13:25 UTC | 6h 35m |
| 2026-05-22 | NCA114 | - | May 22, 23:10 UTC | May 23, 05:25 UTC | 6h 14m |
| 2026-05-21 | NCA227 | NRT → PVG | May 21, 14:05 UTC | May 21, 22:40 UTC | 8h 35m |
| 2026-05-20 | NCA143 | LAX → NRT | May 20, 22:55 UTC | May 21, 11:25 UTC | 12h 30m |
| 2026-05-20 | NCA134 | ANC → ORD | May 20, 14:40 UTC | May 20, 19:50 UTC | 5h 10m |
| 2026-05-20 | NCA134 | ANC → ORD | May 20, 06:50 UTC | May 20, 13:00 UTC | 6h 10m |
| 2026-05-19 | NCA226D | - | May 19, 23:10 UTC | May 20, 00:35 UTC | 1h 25m |
| 2026-05-19 | NCA226D | - | May 19, 03:50 UTC | May 20, 00:35 UTC | 20h 45m |
| 2026-05-19 | NCA226D | - | May 19, 02:40 UTC | May 20, 00:35 UTC | 21h 55m |
| 2026-05-18 | NCA049 | AMS → MXP | May 18, 11:30 UTC | May 18, 23:55 UTC | 12h 24m |
| 2026-05-18 | NCA049 | AMS → MXP | May 18, 07:40 UTC | May 18, 09:00 UTC | 1h 20m |
| 2026-05-17 | NCA004 | - | May 17, 19:50 UTC | May 18, 04:11 UTC | 8h 20m |
| 2026-05-15 | NCA004 | - | May 15, 12:25 UTC | May 15, 18:55 UTC | 6h 29m |
| 2026-05-14 | NCA143 | LAX → NRT | May 14, 21:55 UTC | May 15, 10:00 UTC | 12h 5m |
| 2026-05-14 | NCA134 | ANC → ORD | May 14, 13:30 UTC | May 14, 19:00 UTC | 5h 30m |
| 2026-05-14 | NCA134 | ANC → ORD | May 14, 05:15 UTC | May 14, 11:20 UTC | 6h 5m |
| 2026-05-13 | NCA206 | HKG → NRT | May 13, 19:30 UTC | May 13, 23:00 UTC | 3h 30m |
| 2026-05-13 | NCA209 | NRT → HKG | May 13, 12:10 UTC | May 13, 16:15 UTC | 4h 5m |
| 2026-05-12 | NCA227 | NRT → PVG | May 12, 13:35 UTC | May 12, 23:30 UTC | 9h 55m |
| 2026-05-11 | NCA101 | LAX → NRT | May 11, 14:25 UTC | May 11, 16:05 UTC | 1h 40m |
| 2026-05-11 | NCA108 | NRT → LAX | May 11, 01:30 UTC | May 11, 10:30 UTC | 9h 0m |
| 2026-05-10 | NCA143 | LAX → NRT | May 10, 08:45 UTC | May 10, 21:04 UTC | 12h 20m |
| 2026-05-09 | NCA134 | ANC → ORD | May 9, 22:15 UTC | May 10, 03:25 UTC | 5h 10m |
| 2026-05-09 | NCA134 | ANC → ORD | May 9, 14:25 UTC | May 9, 20:10 UTC | 5h 45m |
| 2026-05-09 | NCA262 | BKK → NRT | May 9, 05:05 UTC | May 9, 10:20 UTC | 5h 15m |
| 2026-05-09 | NCA263 | NRT → SIN | May 9, 00:10 UTC | May 9, 01:45 UTC | 1h 35m |
| 2026-05-08 | NCA263 | NRT → SIN | May 8, 14:50 UTC | May 8, 21:10 UTC | 6h 20m |
| 2026-05-08 | NCA242 | TPE → NRT | May 8, 09:09 UTC | May 8, 10:14 UTC | 1h 5m |
| 2026-05-08 | NCA242 | TPE → NRT | May 8, 07:39 UTC | May 8, 07:50 UTC | 10m |
| 2026-05-08 | NCA242 | TPE → NRT | May 8, 07:20 UTC | May 8, 07:24 UTC | 5m |
| 2026-05-08 | NCA241 | NRT → TPE | May 8, 04:00 UTC | May 8, 04:29 UTC | 30m |
| 2026-05-08 | NCA241 | NRT → TPE | May 8, 01:14 UTC | May 8, 02:29 UTC | 1h 15m |
| 2026-05-07 | NCA227 | NRT → PVG | May 7, 13:35 UTC | May 7, 22:20 UTC | 8h 45m |
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 .