sensors Mode-S transponder
3C4A09
ICAO 24-bit transponder address · allocated to Germany
Currently assigned to D-ABPI · BOEING 787-9 Dreamliner
- Hex
- 3C4A09
- Octal
- 17045011
- Decimal
- 3,951,113
- Country
- DE
- Tail
- D-ABPI
- Type
- B789
- Flights observed
- 157
- Distinct callsigns
- 20
- Country
- DE
- Last broadcast
- Jul 26, 06:30 UTC
Last known position
Country allocation
The ICAO 24-bit address 3C4A09 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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 |
|---|---|---|---|
| DLH797 | - | 19 | 2026-07-18 |
| DLH501 | Lufthansa | 15 | 2026-07-25 |
| DLH500 | Lufthansa | 15 | 2026-07-24 |
| DLH796 | - | 13 | 2026-07-18 |
| DLH543 | - | 11 | 2026-07-20 |
| DLH753 | Lufthansa | 10 | 2026-06-03 |
| DLH542 | - | 10 | 2026-07-19 |
| DLH761 | - | 8 | 2026-06-29 |
| DLH760 | Lufthansa | 8 | 2026-06-29 |
| DLH752 | Lufthansa | 7 | 2026-05-03 |
| DLH729 | - | 7 | 2026-06-17 |
| DLH479 | Lufthansa | 6 | 2026-07-22 |
| DLH728 | - | 4 | 2026-06-16 |
| DLH478 | Lufthansa | 4 | 2026-07-22 |
| DLH471 | Lufthansa | 4 | 2026-05-30 |
| DLH470 | Lufthansa | 4 | 2026-05-30 |
| DLH451 | Lufthansa | 4 | 2026-07-24 |
| DLH450 | Lufthansa | 4 | 2026-07-23 |
| DLH569 | - | 2 | 2026-06-30 |
| DLH469 | - | 1 | 2026-06-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | DLH501 | GIG → MUC | Jul 25, 19:25 UTC | Jul 26, 06:20 UTC | 10h 55m |
| 2026-07-24 | DLH500 | MUC → GIG | Jul 24, 20:55 UTC | Jul 25, 08:05 UTC | 11h 10m |
| 2026-07-24 | DLH451 | LAX → FRA | Jul 24, 02:00 UTC | Jul 24, 12:00 UTC | 10h 0m |
| 2026-07-23 | DLH450 | FRA → LAX | Jul 23, 12:20 UTC | Jul 23, 23:20 UTC | 11h 0m |
| 2026-07-22 | DLH479 | YUL → FRA | Jul 22, 23:15 UTC | Jul 23, 05:35 UTC | 6h 20m |
| 2026-07-22 | DLH478 | FRA → YUL | Jul 22, 12:55 UTC | Jul 22, 20:10 UTC | 7h 15m |
| 2026-07-21 | DLH501 | GIG → MUC | Jul 21, 19:35 UTC | Jul 22, 05:25 UTC | 9h 50m |
| 2026-07-20 | DLH500 | MUC → GIG | Jul 20, 20:50 UTC | Jul 21, 07:55 UTC | 11h 5m |
| 2026-07-20 | DLH543 | - | Jul 20, 13:05 UTC | Jul 20, 15:20 UTC | 2h 15m |
| 2026-07-20 | DLH543 | - | Jul 20, 05:00 UTC | Jul 20, 05:15 UTC | 15m |
| 2026-07-19 | DLH542 | - | Jul 19, 13:20 UTC | Jul 19, 23:45 UTC | 10h 25m |
| 2026-07-18 | DLH797 | - | Jul 18, 18:00 UTC | Jul 19, 04:00 UTC | 10h 0m |
| 2026-07-18 | DLH797 | - | Jul 18, 15:45 UTC | Jul 18, 16:00 UTC | 15m |
| 2026-07-18 | DLH796 | - | Jul 18, 06:45 UTC | Jul 18, 07:15 UTC | 30m |
| 2026-07-17 | DLH796 | - | Jul 17, 20:15 UTC | Jul 17, 23:50 UTC | 3h 35m |
| 2026-07-17 | DLH451 | LAX → FRA | Jul 17, 01:55 UTC | Jul 17, 12:04 UTC | 10h 10m |
| 2026-07-16 | DLH450 | - | Jul 16, 12:30 UTC | Jul 16, 23:25 UTC | 10h 55m |
| 2026-07-15 | DLH501 | - | Jul 15, 19:20 UTC | Jul 16, 05:50 UTC | 10h 30m |
| 2026-07-14 | DLH500 | - | Jul 14, 20:45 UTC | Jul 15, 07:55 UTC | 11h 9m |
| 2026-07-14 | DLH543 | BOG → FRA | Jul 14, 05:00 UTC | Jul 14, 15:05 UTC | 10h 5m |
| 2026-07-13 | DLH542 | FRA → BOG | Jul 13, 13:40 UTC | Jul 14, 00:00 UTC | 10h 20m |
| 2026-07-12 | DLH501 | - | Jul 12, 19:25 UTC | Jul 13, 05:45 UTC | 10h 20m |
| 2026-07-11 | DLH500 | FRA → GIG | Jul 11, 20:45 UTC | Jul 12, 08:05 UTC | 11h 20m |
| 2026-07-11 | DLH451 | - | Jul 11, 01:50 UTC | Jul 11, 12:05 UTC | 10h 15m |
| 2026-07-10 | DLH450 | - | Jul 10, 12:25 UTC | Jul 10, 23:35 UTC | 11h 10m |
| 2026-07-10 | DLH479 | - | Jul 10, 01:00 UTC | Jul 10, 06:30 UTC | 5h 30m |
| 2026-07-10 | DLH479 | - | Jul 10, 00:15 UTC | Jul 10, 00:55 UTC | 40m |
| 2026-07-09 | DLH478 | - | Jul 9, 13:40 UTC | Jul 9, 21:05 UTC | 7h 25m |
| 2026-07-08 | DLH501 | - | Jul 8, 19:25 UTC | Jul 9, 06:15 UTC | 10h 50m |
| 2026-07-07 | DLH500 | FRA → GIG | Jul 7, 20:40 UTC | Jul 8, 07:45 UTC | 11h 5m |
| 2026-07-07 | DLH451 | - | Jul 7, 02:00 UTC | Jul 7, 12:10 UTC | 10h 10m |
| 2026-07-06 | DLH450 | - | Jul 6, 12:15 UTC | Jul 6, 23:25 UTC | 11h 10m |
| 2026-07-04 | DLH479 | YUL → FRA | Jul 4, 22:55 UTC | Jul 5, 05:10 UTC | 6h 15m |
| 2026-07-04 | DLH478 | FRA → YUL | Jul 4, 13:20 UTC | Jul 4, 20:35 UTC | 7h 15m |
| 2026-07-04 | DLH501 | - | Jul 4, 03:20 UTC | Jul 4, 06:15 UTC | 2h 55m |
| 2026-07-03 | DLH501 | - | Jul 3, 19:35 UTC | Jul 4, 03:15 UTC | 7h 40m |
| 2026-07-02 | DLH500 | - | Jul 2, 20:40 UTC | Jul 3, 07:15 UTC | 10h 35m |
| 2026-07-02 | DLH543 | BOG → FRA | Jul 2, 05:45 UTC | Jul 2, 14:55 UTC | 9h 10m |
| 2026-07-01 | DLH542 | - | Jul 1, 13:45 UTC | Jul 2, 06:55 UTC | 17h 10m |
| 2026-06-30 | DLH569 | FRA → FRA | Jun 30, 10:55 UTC | Jul 1, 04:45 UTC | 17h 50m |
| 2026-06-29 | DLH761 | DEL → FRA | Jun 29, 22:49 UTC | Jun 30, 06:35 UTC | 7h 46m |
| 2026-06-29 | DLH760 | FRA → DEL | Jun 29, 13:30 UTC | Jun 29, 20:44 UTC | 7h 15m |
| 2026-06-28 | DLH501 | - | Jun 28, 19:34 UTC | Jun 29, 06:29 UTC | 10h 55m |
| 2026-06-27 | DLH500 | - | Jun 27, 20:49 UTC | Jun 28, 06:49 UTC | 10h 0m |
| 2026-06-27 | DLH543 | BOG → FRA | Jun 27, 06:19 UTC | Jun 27, 15:10 UTC | 8h 50m |
| 2026-06-26 | DLH543 | BOG → FRA | Jun 26, 16:20 UTC | Jun 27, 15:10 UTC | 22h 50m |
| 2026-06-26 | DLH542 | - | Jun 26, 14:50 UTC | Jun 27, 14:14 UTC | 23h 25m |
| 2026-06-25 | DLH569 | - | Jun 25, 10:20 UTC | Jun 26, 04:59 UTC | 18h 40m |
| 2026-06-23 | DLH479 | YUL → FRA | Jun 23, 23:24 UTC | Jun 24, 04:59 UTC | 5h 35m |
| 2026-06-23 | DLH479 | YUL → FRA | Jun 23, 22:34 UTC | Jun 23, 23:19 UTC | 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 D-ABPI page for operator, model, and routing details .