sensors Mode-S transponder
888194
ICAO 24-bit transponder address · allocated to Vietnam
Currently assigned to VN-A508 · AIRBUS A-321neo
- Hex
- 888194
- Octal
- 42100624
- Decimal
- 8,946,068
- Country
- VN
- Tail
- VN-A508
- Type
- A21N
- Flights observed
- 82
- Distinct callsigns
- 20
- Country
- VN
- Last broadcast
- 53m ago
Last known position
Country allocation
The ICAO 24-bit address 888194 falls within the block assigned to Vietnam (VN) by ICAO Annex 10, Volume III. Every aircraft registered in Vietnam 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 |
|---|---|---|---|
| HVN440 | Vietnam Airlines | 12 | 2026-04-30 |
| HVN435 | Vietnam Airlines | 10 | 2026-04-27 |
| HVN441 | Vietnam Airlines | 9 | 2026-04-30 |
| HVN431 | Vietnam Airlines | 7 | 2026-05-30 |
| HVN430 | Vietnam Airlines | 6 | 2026-05-29 |
| HVN977 | Vietnam Airlines | 4 | 2026-05-28 |
| HVN976 | Vietnam Airlines | 4 | 2026-05-28 |
| HVN434 | Vietnam Airlines | 3 | 2026-04-19 |
| HVN7340 | Vietnam Airlines | 2 | 2026-04-19 |
| HVN649 | Vietnam Airlines | 2 | 2026-05-08 |
| HVN348 | Vietnam Airlines | 2 | 2026-04-14 |
| HVN681 | - | 1 | 2026-04-13 |
| HVN680 | - | 1 | 2026-04-13 |
| HVN678 | Vietnam Airlines | 1 | 2026-05-13 |
| HVN663 | Vietnam Airlines | 1 | 2026-05-01 |
| HVN657 | Vietnam Airlines | 1 | 2026-05-04 |
| HVN648 | Vietnam Airlines | 1 | 2026-05-04 |
| HVN647 | - | 1 | 2026-04-12 |
| HVN626 | Vietnam Airlines | 1 | 2026-05-27 |
| HVN619 | Vietnam Airlines | 1 | 2026-04-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | HVN431 | ICN → DAD | May 30, 02:55 UTC | May 30, 05:00 UTC | 2h 5m |
| 2026-05-29 | HVN430 | DAD → ICN | May 29, 05:45 UTC | May 29, 20:50 UTC | 15h 5m |
| 2026-05-28 | HVN976 | DEL → SGN | May 28, 19:20 UTC | May 29, 04:15 UTC | 8h 55m |
| 2026-05-28 | HVN977 | SGN → DEL | May 28, 13:10 UTC | May 28, 17:35 UTC | 4h 25m |
| 2026-05-27 | HVN626 | BKK → DAD | May 27, 11:20 UTC | May 27, 11:55 UTC | 35m |
| 2026-05-27 | HVN431 | ICN → DAD | May 27, 02:29 UTC | May 27, 09:50 UTC | 7h 20m |
| 2026-05-26 | HVN430 | DAD → ICN | May 26, 11:20 UTC | May 26, 22:05 UTC | 10h 45m |
| 2026-05-26 | HVN431 | ICN → DAD | May 26, 02:29 UTC | May 26, 09:45 UTC | 7h 15m |
| 2026-05-25 | HVN430 | DAD → ICN | May 25, 11:20 UTC | May 25, 21:24 UTC | 10h 4m |
| 2026-05-25 | HVN431 | ICN → DAD | May 25, 02:30 UTC | May 25, 10:00 UTC | 7h 30m |
| 2026-05-24 | HVN430 | DAD → ICN | May 24, 05:15 UTC | May 24, 20:50 UTC | 15h 35m |
| 2026-05-24 | HVN582 | HAN → KHH | May 24, 03:05 UTC | May 24, 03:50 UTC | 45m |
| 2026-05-21 | HVN976 | DEL → SGN | May 21, 18:35 UTC | May 21, 22:30 UTC | 3h 55m |
| 2026-05-21 | HVN977 | SGN → DEL | May 21, 12:15 UTC | May 21, 16:50 UTC | 4h 35m |
| 2026-05-19 | HVN502 | SGN → CAN | May 19, 05:15 UTC | May 19, 05:40 UTC | 25m |
| 2026-05-18 | HVN431 | ICN → DAD | May 18, 02:30 UTC | May 18, 05:10 UTC | 2h 40m |
| 2026-05-17 | HVN431 | ICN → DAD | May 17, 03:05 UTC | May 17, 20:50 UTC | 17h 45m |
| 2026-05-16 | HVN430 | DAD → ICN | May 16, 11:25 UTC | May 16, 20:45 UTC | 9h 20m |
| 2026-05-16 | HVN431 | ICN → DAD | May 16, 02:35 UTC | May 16, 10:05 UTC | 7h 31m |
| 2026-05-15 | HVN430 | DAD → ICN | May 15, 05:05 UTC | May 15, 21:15 UTC | 16h 9m |
| 2026-05-14 | HVN976 | DEL → SGN | May 14, 19:00 UTC | May 15, 03:45 UTC | 8h 45m |
| 2026-05-14 | HVN977 | SGN → DEL | May 14, 12:25 UTC | May 14, 16:40 UTC | 4h 15m |
| 2026-05-13 | HVN678 | KUL → SGN | May 13, 11:45 UTC | May 13, 12:10 UTC | 25m |
| 2026-05-12 | HVN976 | DEL → SGN | May 12, 18:25 UTC | May 13, 10:20 UTC | 15h 55m |
| 2026-05-12 | HVN977 | SGN → DEL | May 12, 12:25 UTC | May 12, 16:45 UTC | 4h 20m |
| 2026-05-08 | HVN649 | MNL → SGN | May 8, 20:10 UTC | May 8, 20:40 UTC | 30m |
| 2026-05-07 | HVN581 | KHH → SGN | May 7, 23:29 UTC | May 8, 18:45 UTC | 19h 15m |
| 2026-05-07 | HVN580 | SGN → KHH | May 7, 13:00 UTC | May 7, 13:40 UTC | 40m |
| 2026-05-04 | HVN649 | MNL → SGN | May 4, 20:30 UTC | May 4, 21:05 UTC | 35m |
| 2026-05-04 | HVN648 | SGN → MNL | May 4, 13:30 UTC | May 4, 18:45 UTC | 5h 16m |
| 2026-05-04 | HVN657 | SGN → SIN | May 4, 11:10 UTC | May 4, 11:30 UTC | 20m |
| 2026-05-02 | HVN616 | BKK → HAN | May 2, 15:45 UTC | May 2, 16:00 UTC | 15m |
| 2026-05-02 | HVN617 | HAN → BKK | May 2, 08:20 UTC | May 2, 14:15 UTC | 5h 55m |
| 2026-05-01 | HVN663 | HAN → SIN | May 1, 12:45 UTC | May 2, 06:40 UTC | 17h 55m |
| 2026-04-30 | HVN441 | ICN → CXR | Apr 30, 22:10 UTC | May 1, 11:15 UTC | 13h 5m |
| 2026-04-30 | HVN440 | CXR → ICN | Apr 30, 01:05 UTC | Apr 30, 19:05 UTC | 18h 0m |
| 2026-04-29 | HVN440 | CXR → ICN | Apr 29, 23:55 UTC | Apr 30, 19:05 UTC | 19h 10m |
| 2026-04-29 | HVN441 | ICN → CXR | Apr 29, 22:05 UTC | Apr 30, 19:05 UTC | 20h 59m |
| 2026-04-29 | HVN440 | CXR → ICN | Apr 29, 16:35 UTC | Apr 29, 19:15 UTC | 2h 40m |
| 2026-04-28 | HVN440 | CXR → ICN | Apr 28, 23:45 UTC | Apr 29, 19:15 UTC | 19h 31m |
| 2026-04-28 | HVN441 | ICN → CXR | Apr 28, 22:00 UTC | Apr 29, 19:15 UTC | 21h 16m |
| 2026-04-27 | HVN440 | CXR → ICN | Apr 27, 23:20 UTC | Apr 28, 19:00 UTC | 19h 40m |
| 2026-04-27 | HVN440 | CXR → ICN | Apr 27, 19:05 UTC | Apr 28, 19:00 UTC | 23h 55m |
| 2026-04-27 | HVN435 | PUS → CXR | Apr 27, 18:30 UTC | Apr 28, 17:00 UTC | 22h 30m |
| 2026-04-26 | HVN441 | ICN → CXR | Apr 26, 23:35 UTC | Apr 27, 19:45 UTC | 20h 10m |
| 2026-04-26 | HVN441 | ICN → CXR | Apr 26, 21:50 UTC | Apr 27, 19:45 UTC | 21h 55m |
| 2026-04-26 | HVN440 | CXR → ICN | Apr 26, 16:15 UTC | Apr 26, 19:00 UTC | 2h 45m |
| 2026-04-25 | HVN618 | BKK → HAN | Apr 25, 12:20 UTC | Apr 25, 12:40 UTC | 20m |
| 2026-04-25 | HVN619 | HAN → BKK | Apr 25, 10:30 UTC | Apr 25, 11:05 UTC | 35m |
| 2026-04-23 | HVN593 | HKG → HAN | Apr 23, 06:50 UTC | Apr 23, 07:01 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 VN-A508 page for operator, model, and routing details .