sensors Mode-S transponder
485B43
ICAO 24-bit transponder address · allocated to Netherlands
Currently assigned to PH-BKC · BOEING 787-10 Dreamliner
- Hex
- 485B43
- Octal
- 22055503
- Decimal
- 4,741,955
- Country
- NL
- Tail
- PH-BKC
- Type
- B78X
- Flights observed
- 106
- Distinct callsigns
- 20
- Country
- NL
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 485B43 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 |
|---|---|---|---|
| KLM373 | - | 9 | 2026-05-31 |
| KLM603 | KLM Royal Dutch Airlines | 8 | 2026-05-02 |
| KLM282 | KLM Royal Dutch Airlines | 7 | 2026-05-31 |
| KLM871 | KLM Royal Dutch Airlines | 6 | 2026-05-13 |
| KLM604 | KLM Royal Dutch Airlines | 6 | 2026-05-03 |
| KLM872 | KLM Royal Dutch Airlines | 5 | 2026-05-13 |
| KLM644 | KLM Royal Dutch Airlines | 5 | 2026-05-19 |
| KLM565 | KLM Royal Dutch Airlines | 5 | 2026-05-23 |
| KLM643 | KLM Royal Dutch Airlines | 4 | 2026-05-18 |
| KLM878 | KLM Royal Dutch Airlines | 3 | 2026-05-14 |
| KLM745 | KLM Royal Dutch Airlines | 3 | 2026-05-12 |
| KLM615 | KLM Royal Dutch Airlines | 3 | 2026-05-30 |
| KLM611 | KLM Royal Dutch Airlines | 3 | 2026-05-28 |
| KLM571 | KLM Royal Dutch Airlines | 3 | 2026-05-26 |
| KLM48 | KLM Royal Dutch Airlines | 3 | 2026-05-28 |
| KLM226 | KLM Royal Dutch Airlines | 3 | 2026-05-13 |
| KLM219 | KLM Royal Dutch Airlines | 3 | 2026-05-12 |
| KLM174 | KLM Royal Dutch Airlines | 3 | 2026-05-24 |
| KLM877 | KLM Royal Dutch Airlines | 2 | 2026-04-30 |
| KLM705 | KLM Royal Dutch Airlines | 2 | 2026-05-08 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-31 | KLM282 | SFO → AMS | May 31, 21:10 UTC | Jun 1, 06:40 UTC | 9h 30m |
| 2026-05-31 | KLM373 | - | May 31, 08:25 UTC | May 31, 18:20 UTC | 9h 55m |
| 2026-05-30 | KLM373 | SEA → SFO | May 30, 20:50 UTC | May 31, 18:20 UTC | 21h 30m |
| 2026-05-30 | KLM373 | PDX → SFO | May 30, 20:35 UTC | May 31, 18:20 UTC | 21h 45m |
| 2026-05-30 | KLM615 | AMS → PDX | May 30, 11:35 UTC | May 30, 18:30 UTC | 6h 55m |
| 2026-05-30 | KLM615 | AMS → PDX | May 30, 09:35 UTC | May 30, 10:40 UTC | 1h 5m |
| 2026-05-29 | KLM602 | LAX → AMS | May 29, 21:00 UTC | May 30, 07:00 UTC | 10h 0m |
| 2026-05-29 | KLM601 | AMS → LAX | May 29, 08:20 UTC | May 29, 18:45 UTC | 10h 26m |
| 2026-05-28 | KLM48 | ORD → AMS | May 28, 21:25 UTC | May 29, 04:55 UTC | 7h 30m |
| 2026-05-28 | KLM611 | AMS → ORD | May 28, 11:15 UTC | May 28, 18:50 UTC | 7h 35m |
| 2026-05-27 | KLM282 | SFO → AMS | May 27, 21:20 UTC | May 28, 07:05 UTC | 9h 45m |
| 2026-05-27 | KLM373 | - | May 27, 08:25 UTC | May 27, 18:40 UTC | 10h 15m |
| 2026-05-26 | KLM571 | DAR → AMS | May 26, 10:50 UTC | May 27, 05:24 UTC | 18h 35m |
| 2026-05-26 | KLM571 | DAR → AMS | May 26, 08:50 UTC | May 27, 05:24 UTC | 20h 35m |
| 2026-05-26 | KLM571 | DAR → AMS | May 26, 08:34 UTC | May 26, 16:20 UTC | 7h 45m |
| 2026-05-25 | KLM296 | YHZ → AMS | May 25, 22:34 UTC | May 26, 05:20 UTC | 6h 45m |
| 2026-05-25 | KLM225 | - | May 25, 11:30 UTC | May 25, 19:20 UTC | 7h 50m |
| 2026-05-24 | KLM188 | - | May 24, 12:50 UTC | May 25, 07:45 UTC | 18h 55m |
| 2026-05-24 | KLM163 | - | May 24, 11:50 UTC | May 25, 07:45 UTC | 19h 55m |
| 2026-05-24 | KLM174 | AMS → NBO | May 24, 01:00 UTC | May 24, 05:25 UTC | 4h 25m |
| 2026-05-23 | KLM565 | AMS → NBO | May 23, 18:35 UTC | May 23, 18:45 UTC | 10m |
| 2026-05-23 | KLM565 | AMS → NBO | May 23, 10:50 UTC | May 23, 14:20 UTC | 3h 30m |
| 2026-05-21 | KLM642 | JFK → AMS | May 21, 21:30 UTC | May 22, 03:35 UTC | 6h 5m |
| 2026-05-21 | KLM641 | AMS → JFK | May 21, 10:50 UTC | May 21, 18:10 UTC | 7h 20m |
| 2026-05-20 | KLM282 | SFO → AMS | May 20, 21:15 UTC | May 21, 06:55 UTC | 9h 40m |
| 2026-05-20 | KLM373 | - | May 20, 08:05 UTC | May 20, 18:05 UTC | 10h 0m |
| 2026-05-19 | KLM48 | ORD → AMS | May 19, 22:05 UTC | May 20, 04:55 UTC | 6h 51m |
| 2026-05-19 | KLM611 | AMS → ORD | May 19, 11:10 UTC | May 19, 19:05 UTC | 7h 55m |
| 2026-05-19 | KLM644 | JFK → AMS | May 19, 02:20 UTC | May 19, 08:45 UTC | 6h 25m |
| 2026-05-18 | KLM643 | AMS → JFK | May 18, 15:35 UTC | May 18, 22:40 UTC | 7h 4m |
| 2026-05-18 | KLM174 | AMS → NBO | May 18, 01:05 UTC | May 18, 05:30 UTC | 4h 25m |
| 2026-05-17 | KLM565 | AMS → NBO | May 17, 10:45 UTC | May 17, 14:30 UTC | 3h 45m |
| 2026-05-16 | KLM282 | SFO → AMS | May 16, 21:15 UTC | May 17, 06:40 UTC | 9h 25m |
| 2026-05-16 | KLM373 | AMS → SFO | May 16, 08:11 UTC | May 16, 18:15 UTC | 10h 5m |
| 2026-05-15 | KLM280 | EBB → AMS | May 15, 10:50 UTC | May 16, 05:15 UTC | 18h 24m |
| 2026-05-15 | KLM567 | AMS → JRO | May 15, 08:50 UTC | May 16, 05:15 UTC | 20h 24m |
| 2026-05-15 | KLM567 | AMS → JRO | May 15, 08:30 UTC | May 16, 05:15 UTC | 20h 44m |
| 2026-05-14 | KLM878 | BOM → AMS | May 14, 10:50 UTC | May 15, 05:30 UTC | 18h 40m |
| 2026-05-14 | KLM878 | BOM → AMS | May 14, 10:00 UTC | May 15, 05:30 UTC | 19h 30m |
| 2026-05-13 | KLM872 | DEL → AMS | May 13, 22:40 UTC | May 14, 06:45 UTC | 8h 5m |
| 2026-05-13 | KLM871 | AMS → DEL | May 13, 12:50 UTC | May 13, 20:10 UTC | 7h 20m |
| 2026-05-13 | KLM226 | - | May 13, 01:05 UTC | May 13, 09:15 UTC | 8h 10m |
| 2026-05-12 | KLM219 | AMS → YVR | May 12, 13:35 UTC | May 12, 22:45 UTC | 9h 10m |
| 2026-05-12 | KLM745 | CTG → AMS | May 12, 06:55 UTC | May 12, 08:35 UTC | 1h 40m |
| 2026-05-11 | KLM745 | CTG → AMS | May 11, 08:50 UTC | May 12, 08:35 UTC | 23h 46m |
| 2026-05-11 | KLM745 | CTG → AMS | May 11, 08:35 UTC | May 11, 09:50 UTC | 1h 15m |
| 2026-05-10 | KLM642 | JFK → AMS | May 10, 21:00 UTC | May 11, 03:25 UTC | 6h 25m |
| 2026-05-10 | KLM641 | AMS → JFK | May 10, 11:00 UTC | May 10, 18:15 UTC | 7h 15m |
| 2026-05-09 | KLM706 | GIG → AMS | May 9, 01:00 UTC | May 9, 11:25 UTC | 10h 25m |
| 2026-05-08 | KLM705 | AMS → GIG | May 8, 22:25 UTC | May 8, 22:35 UTC | 10m |
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-BKC page for operator, model, and routing details .