sensors Mode-S transponder
841520
ICAO 24-bit transponder address · allocated to Japan
Currently assigned to JA05WJ · AIRBUS A-350-1000
- Hex
- 841520
- Octal
- 41012440
- Decimal
- 8,656,160
- Country
- JP
- Tail
- JA05WJ
- Type
- A35K
- Flights observed
- 74
- Distinct callsigns
- 12
- Country
- JP
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 841520 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| JAL44 | Japan Airlines | 9 | 2026-05-23 |
| JAL43 | Japan Airlines | 9 | 2026-05-30 |
| JAL3 | Japan Airlines | 9 | 2026-05-29 |
| JAL46 | Japan Airlines | 7 | 2026-05-27 |
| JAL6 | Japan Airlines | 5 | 2026-05-19 |
| JAL5 | Japan Airlines | 5 | 2026-05-19 |
| JAL45 | Japan Airlines | 5 | 2026-05-27 |
| JAL4 | Japan Airlines | 5 | 2026-05-28 |
| JAL16 | Japan Airlines | 5 | 2026-05-17 |
| JAL15 | Japan Airlines | 5 | 2026-05-17 |
| JAL12 | Japan Airlines | 5 | 2026-05-16 |
| JAL11 | Japan Airlines | 5 | 2026-05-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | JAL43 | HND → LHR | May 30, 01:25 UTC | May 30, 01:55 UTC | 30m |
| 2026-05-29 | JAL3 | JFK → HND | May 29, 06:00 UTC | May 29, 19:30 UTC | 13h 30m |
| 2026-05-28 | JAL4 | HND → JFK | May 28, 11:00 UTC | May 28, 23:00 UTC | 12h 0m |
| 2026-05-27 | JAL46 | CDG → HND | May 27, 18:55 UTC | May 28, 07:50 UTC | 12h 55m |
| 2026-05-27 | JAL45 | HND → CDG | May 27, 02:04 UTC | May 27, 15:50 UTC | 13h 46m |
| 2026-05-25 | JAL46 | CDG → HND | May 25, 19:00 UTC | May 26, 08:04 UTC | 13h 4m |
| 2026-05-25 | JAL45 | HND → CDG | May 25, 02:05 UTC | May 25, 16:10 UTC | 14h 5m |
| 2026-05-23 | JAL44 | LHR → HND | May 23, 18:45 UTC | May 24, 08:05 UTC | 13h 20m |
| 2026-05-23 | JAL43 | HND → LHR | May 23, 01:10 UTC | May 23, 14:45 UTC | 13h 34m |
| 2026-05-21 | JAL44 | LHR → HND | May 21, 19:05 UTC | May 22, 08:25 UTC | 13h 20m |
| 2026-05-21 | JAL43 | HND → LHR | May 21, 01:30 UTC | May 21, 15:00 UTC | 13h 30m |
| 2026-05-19 | JAL5 | JFK → HND | May 19, 18:05 UTC | May 20, 07:15 UTC | 13h 11m |
| 2026-05-19 | JAL6 | HND → JFK | May 19, 02:40 UTC | May 19, 14:50 UTC | 12h 10m |
| 2026-05-17 | JAL15 | LAX → HND | May 17, 21:05 UTC | May 18, 08:05 UTC | 11h 0m |
| 2026-05-17 | JAL16 | HND → LAX | May 17, 09:05 UTC | May 17, 18:15 UTC | 9h 10m |
| 2026-05-16 | JAL11 | DFW → HND | May 16, 17:15 UTC | May 17, 05:40 UTC | 12h 25m |
| 2026-05-16 | JAL12 | HND → DFW | May 16, 02:10 UTC | May 16, 13:01 UTC | 10h 51m |
| 2026-05-15 | JAL3 | JFK → HND | May 15, 06:05 UTC | May 15, 18:55 UTC | 12h 49m |
| 2026-05-14 | JAL4 | HND → JFK | May 14, 11:10 UTC | May 14, 23:30 UTC | 12h 20m |
| 2026-05-13 | JAL15 | LAX → HND | May 13, 21:25 UTC | May 14, 08:20 UTC | 10h 55m |
| 2026-05-13 | JAL16 | HND → LAX | May 13, 09:20 UTC | May 13, 18:35 UTC | 9h 15m |
| 2026-05-12 | JAL11 | DFW → HND | May 12, 17:05 UTC | May 13, 05:30 UTC | 12h 25m |
| 2026-05-12 | JAL12 | HND → DFW | May 12, 09:50 UTC | May 12, 13:15 UTC | 3h 25m |
| 2026-05-11 | JAL3 | JFK → HND | May 11, 05:55 UTC | May 11, 19:00 UTC | 13h 6m |
| 2026-05-10 | JAL4 | HND → JFK | May 10, 10:45 UTC | May 10, 23:00 UTC | 12h 15m |
| 2026-05-09 | JAL5 | JFK → HND | May 9, 17:55 UTC | May 10, 07:15 UTC | 13h 20m |
| 2026-05-09 | JAL6 | HND → JFK | May 9, 02:35 UTC | May 9, 14:45 UTC | 12h 10m |
| 2026-05-07 | JAL15 | LAX → HND | May 7, 21:15 UTC | May 8, 08:34 UTC | 11h 20m |
| 2026-05-07 | JAL16 | HND → LAX | May 7, 09:10 UTC | May 7, 18:30 UTC | 9h 20m |
| 2026-05-06 | JAL11 | DFW → HND | May 6, 17:10 UTC | May 7, 06:15 UTC | 13h 4m |
| 2026-05-06 | JAL12 | HND → DFW | May 6, 02:15 UTC | May 6, 13:35 UTC | 11h 20m |
| 2026-05-04 | JAL44 | LHR → HND | May 4, 18:50 UTC | May 5, 08:15 UTC | 13h 25m |
| 2026-05-04 | JAL43 | HND → LHR | May 4, 01:10 UTC | May 4, 14:35 UTC | 13h 25m |
| 2026-05-03 | JAL3 | JFK → HND | May 3, 05:55 UTC | May 3, 19:20 UTC | 13h 25m |
| 2026-05-02 | JAL4 | HND → JFK | May 2, 11:00 UTC | May 2, 23:05 UTC | 12h 5m |
| 2026-05-01 | JAL15 | LAX → HND | May 1, 21:15 UTC | May 2, 08:35 UTC | 11h 20m |
| 2026-05-01 | JAL16 | HND → LAX | May 1, 09:15 UTC | May 1, 18:35 UTC | 9h 20m |
| 2026-04-30 | JAL11 | DFW → HND | Apr 30, 17:30 UTC | May 1, 06:45 UTC | 13h 15m |
| 2026-04-30 | JAL12 | HND → DFW | Apr 30, 02:30 UTC | Apr 30, 12:55 UTC | 10h 25m |
| 2026-04-28 | JAL15 | LAX → HND | Apr 28, 20:55 UTC | Apr 29, 08:20 UTC | 11h 25m |
| 2026-04-28 | JAL16 | HND → LAX | Apr 28, 08:55 UTC | Apr 28, 18:05 UTC | 9h 10m |
| 2026-04-27 | JAL11 | DFW → HND | Apr 27, 17:00 UTC | Apr 28, 06:00 UTC | 13h 0m |
| 2026-04-27 | JAL12 | HND → DFW | Apr 27, 02:15 UTC | Apr 27, 13:15 UTC | 11h 0m |
| 2026-04-25 | JAL5 | JFK → HND | Apr 25, 19:55 UTC | Apr 26, 08:55 UTC | 13h 0m |
| 2026-04-25 | JAL6 | HND → JFK | Apr 25, 02:35 UTC | Apr 25, 14:50 UTC | 12h 15m |
| 2026-04-23 | JAL5 | JFK → HND | Apr 23, 17:50 UTC | Apr 24, 07:50 UTC | 14h 0m |
| 2026-04-23 | JAL6 | HND → JFK | Apr 23, 02:55 UTC | Apr 23, 14:40 UTC | 11h 45m |
| 2026-04-22 | JAL3 | JFK → HND | Apr 22, 05:45 UTC | Apr 22, 19:20 UTC | 13h 35m |
| 2026-04-21 | JAL4 | HND → JFK | Apr 21, 11:30 UTC | Apr 21, 23:25 UTC | 11h 55m |
| 2026-04-20 | JAL5 | JFK → HND | Apr 20, 17:50 UTC | Apr 21, 07:25 UTC | 13h 35m |
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 JA05WJ page for operator, model, and routing details .