sensors Mode-S transponder
4851B3
ICAO 24-bit transponder address · allocated to Netherlands
Currently assigned to PH-BVP · BOEING 777-300ER
- Hex
- 4851B3
- Octal
- 22050663
- Decimal
- 4,739,507
- Country
- NL
- Tail
- PH-BVP
- Type
- B77W
- Flights observed
- 90
- Distinct callsigns
- 20
- Country
- NL
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 4851B3 falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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 |
|---|---|---|---|
| KLM226 | KLM Royal Dutch Airlines | 9 | 2026-04-22 |
| KLM248 | KLM Royal Dutch Airlines | 6 | 2026-05-24 |
| KLM219 | KLM Royal Dutch Airlines | 6 | 2026-04-21 |
| KLM268 | KLM Royal Dutch Airlines | 5 | 2026-05-10 |
| KLM744 | KLM Royal Dutch Airlines | 4 | 2026-04-24 |
| KLM743 | KLM Royal Dutch Airlines | 4 | 2026-04-23 |
| KLM133 | - | 4 | 2026-05-23 |
| KLM105 | KLM Royal Dutch Airlines | 4 | 2026-05-14 |
| KLM862 | KLM Royal Dutch Airlines | 3 | 2026-05-13 |
| KLM861 | KLM Royal Dutch Airlines | 3 | 2026-05-12 |
| KLM836 | KLM Royal Dutch Airlines | 3 | 2026-05-25 |
| KLM835 | KLM Royal Dutch Airlines | 3 | 2026-05-29 |
| KLM646 | KLM Royal Dutch Airlines | 3 | 2026-05-15 |
| KLM207 | KLM Royal Dutch Airlines | 3 | 2026-05-15 |
| KLM104 | KLM Royal Dutch Airlines | 3 | 2026-05-14 |
| KLM888 | KLM Royal Dutch Airlines | 2 | 2026-05-17 |
| KLM887 | KLM Royal Dutch Airlines | 2 | 2026-05-17 |
| KLM874 | KLM Royal Dutch Airlines | 2 | 2026-05-26 |
| KLM792 | KLM Royal Dutch Airlines | 2 | 2026-05-29 |
| KLM791 | KLM Royal Dutch Airlines | 2 | 2026-05-28 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KLM835 | AMS → SIN | May 29, 19:40 UTC | May 30, 07:25 UTC | 11h 45m |
| 2026-05-29 | KLM792 | GRU → AMS | May 29, 01:25 UTC | May 29, 12:15 UTC | 10h 50m |
| 2026-05-28 | KLM791 | AMS → GRU | May 28, 11:40 UTC | May 28, 22:50 UTC | 11h 10m |
| 2026-05-27 | KLM592 | JNB → AMS | May 27, 21:35 UTC | May 28, 08:00 UTC | 10h 25m |
| 2026-05-27 | KLM591 | AMS → JNB | May 27, 09:20 UTC | May 27, 19:25 UTC | 10h 5m |
| 2026-05-26 | KLM874 | AMS → BOM | May 26, 10:50 UTC | May 27, 06:44 UTC | 19h 55m |
| 2026-05-26 | KLM874 | AMS → BOM | May 26, 10:05 UTC | May 27, 06:44 UTC | 20h 40m |
| 2026-05-25 | KLM836 | SIN → AMS | May 25, 17:30 UTC | May 26, 06:14 UTC | 12h 44m |
| 2026-05-25 | KLM836 | SIN → AMS | May 25, 15:10 UTC | May 25, 15:20 UTC | 10m |
| 2026-05-24 | KLM835 | AMS → SIN | May 24, 19:50 UTC | May 25, 07:35 UTC | 11h 45m |
| 2026-05-24 | KLM248 | ATL → AMS | May 24, 03:00 UTC | May 24, 10:40 UTC | 7h 40m |
| 2026-05-23 | KLM133 | AMS → ATL | May 23, 15:25 UTC | May 24, 00:25 UTC | 9h 0m |
| 2026-05-23 | KLM792 | GRU → AMS | May 23, 01:25 UTC | May 23, 12:10 UTC | 10h 44m |
| 2026-05-22 | KLM791 | AMS → GRU | May 22, 11:45 UTC | May 22, 22:55 UTC | 11h 10m |
| 2026-05-21 | KLM592 | JNB → AMS | May 21, 21:30 UTC | May 22, 08:15 UTC | 10h 45m |
| 2026-05-21 | KLM591 | AMS → JNB | May 21, 09:05 UTC | May 21, 19:05 UTC | 10h 0m |
| 2026-05-20 | KLM836 | SIN → AMS | May 20, 17:15 UTC | May 21, 05:45 UTC | 12h 30m |
| 2026-05-19 | KLM835 | AMS → SIN | May 19, 19:40 UTC | May 20, 07:30 UTC | 11h 51m |
| 2026-05-19 | KLM248 | ATL → AMS | May 19, 02:55 UTC | May 19, 10:55 UTC | 8h 0m |
| 2026-05-18 | KLM133 | - | May 18, 16:05 UTC | May 19, 00:30 UTC | 8h 24m |
| 2026-05-17 | KLM888 | HKG → AMS | May 17, 22:50 UTC | May 18, 03:25 UTC | 4h 35m |
| 2026-05-17 | KLM888 | HKG → AMS | May 17, 14:35 UTC | May 17, 14:50 UTC | 15m |
| 2026-05-17 | KLM887 | AMS → HKG | May 17, 07:25 UTC | May 17, 07:55 UTC | 30m |
| 2026-05-16 | KLM887 | AMS → HKG | May 16, 20:25 UTC | May 17, 00:30 UTC | 4h 5m |
| 2026-05-15 | KLM646 | JFK → AMS | May 15, 23:55 UTC | May 16, 06:10 UTC | 6h 16m |
| 2026-05-15 | KLM207 | AMS → JFK | May 15, 13:25 UTC | May 15, 20:45 UTC | 7h 19m |
| 2026-05-14 | KLM104 | AMS → JNB | May 14, 21:30 UTC | May 15, 08:30 UTC | 11h 0m |
| 2026-05-14 | KLM105 | - | May 14, 08:30 UTC | May 14, 19:25 UTC | 10h 55m |
| 2026-05-13 | KLM862 | NRT → AMS | May 13, 03:35 UTC | May 13, 16:50 UTC | 13h 15m |
| 2026-05-12 | KLM861 | AMS → NRT | May 12, 12:05 UTC | May 13, 01:00 UTC | 12h 55m |
| 2026-05-11 | KLM104 | AMS → JNB | May 11, 21:50 UTC | May 12, 08:55 UTC | 11h 5m |
| 2026-05-11 | KLM105 | - | May 11, 08:40 UTC | May 11, 19:40 UTC | 11h 1m |
| 2026-05-10 | KLM268 | PBM → AMS | May 10, 08:50 UTC | May 11, 03:30 UTC | 18h 40m |
| 2026-05-10 | KLM268 | PBM → AMS | May 10, 07:25 UTC | May 11, 03:30 UTC | 20h 5m |
| 2026-05-09 | KLM268 | PBM → AMS | May 9, 08:50 UTC | May 10, 03:20 UTC | 18h 30m |
| 2026-05-09 | KLM268 | PBM → AMS | May 9, 07:20 UTC | May 10, 03:20 UTC | 20h 0m |
| 2026-05-08 | KLM862 | NRT → AMS | May 8, 03:35 UTC | May 8, 16:50 UTC | 13h 15m |
| 2026-05-07 | KLM861 | AMS → NRT | May 7, 12:05 UTC | May 8, 00:49 UTC | 12h 45m |
| 2026-05-06 | KLM104 | AMS → JNB | May 6, 21:30 UTC | May 7, 08:35 UTC | 11h 5m |
| 2026-05-06 | KLM105 | - | May 6, 19:05 UTC | May 6, 19:25 UTC | 20m |
| 2026-05-06 | KLM105 | - | May 6, 08:35 UTC | May 6, 14:40 UTC | 6h 5m |
| 2026-05-04 | KLM589 | AMS → ACC | May 4, 13:30 UTC | May 5, 04:25 UTC | 14h 56m |
| 2026-05-03 | KLM646 | JFK → AMS | May 3, 23:30 UTC | May 4, 06:10 UTC | 6h 40m |
| 2026-05-03 | KLM207 | AMS → JFK | May 3, 13:20 UTC | May 3, 20:45 UTC | 7h 25m |
| 2026-05-02 | KLM758 | PTY → AMS | May 2, 19:10 UTC | May 3, 10:00 UTC | 14h 49m |
| 2026-05-02 | KLM758 | PTY → AMS | May 2, 12:50 UTC | May 3, 10:00 UTC | 21h 9m |
| 2026-05-02 | KLM757 | AMS → PTY | May 2, 11:20 UTC | May 3, 10:00 UTC | 22h 39m |
| 2026-05-02 | KLM646 | JFK → AMS | May 2, 00:20 UTC | May 2, 06:55 UTC | 6h 35m |
| 2026-05-01 | KLM207 | AMS → JFK | May 1, 14:25 UTC | May 1, 21:40 UTC | 7h 15m |
| 2026-04-29 | KLM862 | NRT → AMS | Apr 29, 03:30 UTC | Apr 29, 16:45 UTC | 13h 16m |
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 PH-BVP page for operator, model, and routing details .