sensors Mode-S transponder
781BAB
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-324D · AIRBUS A-320neo
- Hex
- 781BAB
- Octal
- 36015653
- Decimal
- 7,871,403
- Country
- CN
- Tail
- B-324D
- Type
- A20N
- Flights observed
- 91
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 26, 03:20 UTC
Last known position
Country allocation
The ICAO 24-bit address 781BAB falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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 |
|---|---|---|---|
| DKH1365 | Juneyao Airlines | 15 | 2026-05-01 |
| DKH1353 | - | 13 | 2026-06-14 |
| DKH1354 | - | 7 | 2026-06-14 |
| DKH1575 | - | 6 | 2026-07-14 |
| DKH1620 | - | 5 | 2026-07-02 |
| DKH1564 | Juneyao Airlines | 5 | 2026-05-09 |
| DKH1563 | Juneyao Airlines | 4 | 2026-05-09 |
| DKH1562 | - | 4 | 2026-07-12 |
| DKH1561 | - | 4 | 2026-07-12 |
| DKH2291 | Juneyao Airlines | 3 | 2026-05-03 |
| DKH2009 | - | 3 | 2026-07-08 |
| DKH1619 | - | 3 | 2026-07-02 |
| DKH1576 | - | 2 | 2026-07-15 |
| DKH1366 | Juneyao Airlines | 2 | 2026-05-01 |
| DKH2268 | - | 1 | 2026-07-19 |
| DKH2010 | Juneyao Airlines | 1 | 2026-04-16 |
| DKH1752 | Juneyao Airlines | 1 | 2026-05-31 |
| DKH1751 | Juneyao Airlines | 1 | 2026-05-31 |
| DKH1730 | Juneyao Airlines | 1 | 2026-06-02 |
| DKH1566 | Juneyao Airlines | 1 | 2026-07-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | DKH1052 | - | Jul 26, 02:55 UTC | Jul 26, 03:20 UTC | 25m |
| 2026-07-24 | DKH1566 | MNL → PVG | Jul 24, 20:45 UTC | Jul 24, 22:45 UTC | 2h 0m |
| 2026-07-24 | DKH1565 | PVG → MNL | Jul 24, 16:30 UTC | Jul 24, 18:55 UTC | 2h 25m |
| 2026-07-23 | DKH1292 | HKG → PVG | Jul 23, 13:30 UTC | Jul 23, 14:30 UTC | 1h 0m |
| 2026-07-23 | DKH1291 | PVG → HKG | Jul 23, 10:05 UTC | Jul 23, 11:25 UTC | 1h 20m |
| 2026-07-19 | DKH2268 | - | Jul 19, 13:35 UTC | Jul 19, 14:00 UTC | 25m |
| 2026-07-16 | DKH1262 | - | Jul 16, 08:55 UTC | Jul 16, 12:25 UTC | 3h 30m |
| 2026-07-15 | DKH1576 | - | Jul 15, 16:35 UTC | Jul 15, 20:50 UTC | 4h 15m |
| 2026-07-14 | DKH1575 | - | Jul 14, 19:10 UTC | Jul 15, 14:30 UTC | 19h 19m |
| 2026-07-14 | DKH1575 | - | Jul 14, 16:10 UTC | Jul 15, 14:30 UTC | 22h 19m |
| 2026-07-14 | DKH1575 | - | Jul 14, 09:55 UTC | Jul 14, 14:00 UTC | 4h 5m |
| 2026-07-13 | DKH1575 | - | Jul 13, 13:45 UTC | Jul 14, 11:05 UTC | 21h 20m |
| 2026-07-13 | DKH1575 | - | Jul 13, 11:05 UTC | Jul 14, 10:40 UTC | 23h 35m |
| 2026-07-12 | DKH1562 | - | Jul 12, 19:50 UTC | Jul 13, 13:50 UTC | 18h 0m |
| 2026-07-12 | DKH1561 | - | Jul 12, 14:35 UTC | Jul 12, 18:25 UTC | 3h 50m |
| 2026-07-10 | DKH1562 | - | Jul 10, 20:15 UTC | Jul 11, 00:05 UTC | 3h 50m |
| 2026-07-10 | DKH1561 | - | Jul 10, 06:50 UTC | Jul 10, 18:25 UTC | 11h 35m |
| 2026-07-08 | DKH1562 | - | Jul 8, 20:05 UTC | Jul 9, 00:05 UTC | 4h 0m |
| 2026-07-08 | DKH1561 | - | Jul 8, 09:35 UTC | Jul 8, 18:50 UTC | 9h 15m |
| 2026-07-08 | DKH2009 | - | Jul 8, 07:05 UTC | Jul 8, 07:15 UTC | 10m |
| 2026-07-06 | DKH1562 | - | Jul 6, 20:00 UTC | Jul 7, 00:05 UTC | 4h 5m |
| 2026-07-06 | DKH1561 | - | Jul 6, 09:25 UTC | Jul 6, 18:15 UTC | 8h 50m |
| 2026-07-06 | DKH2009 | - | Jul 6, 06:25 UTC | Jul 6, 06:45 UTC | 20m |
| 2026-07-02 | DKH1620 | - | Jul 2, 07:10 UTC | Jul 2, 08:15 UTC | 1h 5m |
| 2026-07-02 | DKH1619 | - | Jul 2, 04:50 UTC | Jul 2, 05:55 UTC | 1h 5m |
| 2026-06-27 | DKH1620 | - | Jun 27, 07:24 UTC | Jun 27, 08:25 UTC | 1h 0m |
| 2026-06-27 | DKH1619 | - | Jun 27, 04:39 UTC | Jun 27, 05:35 UTC | 55m |
| 2026-06-25 | DKH1620 | - | Jun 25, 07:05 UTC | Jun 25, 08:09 UTC | 1h 5m |
| 2026-06-25 | DKH1620 | - | Jun 25, 04:29 UTC | Jun 25, 05:29 UTC | 1h 0m |
| 2026-06-20 | DKH1620 | - | Jun 20, 07:04 UTC | Jun 20, 08:09 UTC | 1h 5m |
| 2026-06-20 | DKH1619 | - | Jun 20, 04:34 UTC | Jun 20, 04:44 UTC | 10m |
| 2026-06-14 | DKH1354 | - | Jun 14, 16:25 UTC | Jun 14, 20:35 UTC | 4h 10m |
| 2026-06-14 | DKH1353 | - | Jun 14, 10:50 UTC | Jun 14, 15:10 UTC | 4h 20m |
| 2026-06-13 | DKH1353 | - | Jun 13, 19:45 UTC | Jun 14, 15:10 UTC | 19h 25m |
| 2026-06-13 | DKH1353 | - | Jun 13, 16:50 UTC | Jun 14, 15:10 UTC | 22h 20m |
| 2026-06-13 | DKH1354 | - | Jun 13, 16:30 UTC | Jun 14, 14:45 UTC | 22h 15m |
| 2026-06-13 | DKH1353 | - | Jun 13, 10:50 UTC | Jun 13, 15:00 UTC | 4h 10m |
| 2026-06-11 | DKH1576 | - | Jun 11, 16:10 UTC | Jun 11, 20:10 UTC | 4h 0m |
| 2026-06-11 | DKH1575 | PVG → SIN | Jun 11, 09:50 UTC | Jun 11, 14:15 UTC | 4h 25m |
| 2026-06-09 | DKH1330 | HAN → PVG | Jun 9, 18:35 UTC | Jun 9, 18:45 UTC | 10m |
| 2026-06-09 | DKH1329 | PVG → HAN | Jun 9, 16:45 UTC | Jun 9, 17:05 UTC | 20m |
| 2026-06-02 | DKH1730 | NNG → NKG | Jun 2, 13:50 UTC | Jun 2, 14:10 UTC | 20m |
| 2026-05-31 | DKH1752 | SZX → NKG | May 31, 23:15 UTC | May 31, 23:25 UTC | 10m |
| 2026-05-31 | DKH1751 | NKG → SZX | May 31, 15:10 UTC | May 31, 15:55 UTC | 45m |
| 2026-05-09 | DKH1564 | KUL → WUX | May 9, 20:15 UTC | May 10, 00:15 UTC | 4h 0m |
| 2026-05-09 | DKH1563 | WUX → KUL | May 9, 06:35 UTC | May 9, 18:45 UTC | 12h 10m |
| 2026-05-05 | DKH1354 | KUL → PVG | May 5, 16:50 UTC | May 6, 11:45 UTC | 18h 55m |
| 2026-05-05 | DKH1354 | KUL → PVG | May 5, 16:25 UTC | May 6, 11:45 UTC | 19h 20m |
| 2026-05-04 | DKH1353 | PVG → KUL | May 4, 20:50 UTC | May 5, 15:15 UTC | 18h 25m |
| 2026-05-04 | DKH1353 | PVG → KUL | May 4, 19:55 UTC | May 5, 15:15 UTC | 19h 20m |
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 B-324D page for operator, model, and routing details .