sensors Mode-S transponder
88816E
ICAO 24-bit transponder address · allocated to Vietnam
Currently assigned to VN-A623 · AIRBUS A-321neo
- Hex
- 88816E
- Octal
- 42100556
- Decimal
- 8,946,030
- Country
- VN
- Tail
- VN-A623
- Type
- A21N
- Flights observed
- 76
- Distinct callsigns
- 20
- Country
- VN
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 88816E 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 |
|---|---|---|---|
| HVN648 | Vietnam Airlines | 6 | 2026-05-25 |
| HVN440 | Vietnam Airlines | 5 | 2026-05-27 |
| HVN647 | Vietnam Airlines | 4 | 2026-05-05 |
| HVN649 | Vietnam Airlines | 3 | 2026-05-23 |
| HVN646 | Vietnam Airlines | 3 | 2026-05-05 |
| HVN634 | Vietnam Airlines | 3 | 2026-05-11 |
| HVN587 | Vietnam Airlines | 3 | 2026-05-29 |
| HVN502 | Vietnam Airlines | 3 | 2026-05-25 |
| HVN349 | Vietnam Airlines | 3 | 2026-04-16 |
| HVN619 | Vietnam Airlines | 2 | 2026-05-08 |
| HVN618 | Vietnam Airlines | 2 | 2026-05-08 |
| HVN616 | Vietnam Airlines | 2 | 2026-04-24 |
| HVN614 | Vietnam Airlines | 2 | 2026-05-11 |
| HVN586 | Vietnam Airlines | 2 | 2026-05-28 |
| HVN441 | Vietnam Airlines | 2 | 2026-05-27 |
| HVN434 | Vietnam Airlines | 2 | 2026-05-25 |
| HVN430 | Vietnam Airlines | 2 | 2026-05-13 |
| HVN348 | Vietnam Airlines | 2 | 2026-04-15 |
| HVN1270 | Vietnam Airlines | 2 | 2026-04-21 |
| VN431 | Vietnam Airlines | 1 | 2026-05-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | HVN1591 | HAN → VDH | May 30, 01:55 UTC | May 30, 02:15 UTC | 20m |
| 2026-05-29 | HVN7562 | CXR → HAN | May 29, 10:20 UTC | May 29, 14:10 UTC | 3h 50m |
| 2026-05-29 | HVN1650 | TBB → HAN | May 29, 05:05 UTC | May 29, 08:50 UTC | 3h 45m |
| 2026-05-29 | HVN587 | KHH → HAN | May 29, 00:30 UTC | May 29, 01:30 UTC | 1h 0m |
| 2026-05-28 | HVN586 | HAN → KHH | May 28, 12:05 UTC | May 28, 14:20 UTC | 2h 15m |
| 2026-05-27 | HVN441 | ICN → CXR | May 27, 21:50 UTC | May 28, 10:45 UTC | 12h 55m |
| 2026-05-27 | HVN440 | CXR → ICN | May 27, 01:05 UTC | May 27, 19:20 UTC | 18h 16m |
| 2026-05-26 | HVN440 | CXR → ICN | May 26, 19:34 UTC | May 27, 19:20 UTC | 23h 46m |
| 2026-05-26 | HVN440 | CXR → ICN | May 26, 18:45 UTC | May 27, 17:30 UTC | 22h 45m |
| 2026-05-25 | HVN434 | CXR → PUS | May 25, 20:30 UTC | May 26, 19:30 UTC | 23h 0m |
| 2026-05-25 | HVN648 | SGN → MNL | May 25, 18:20 UTC | May 25, 18:50 UTC | 30m |
| 2026-05-25 | HVN502 | SGN → CAN | May 25, 05:20 UTC | May 25, 05:40 UTC | 20m |
| 2026-05-24 | HVN654 | SIN → SGN | May 24, 11:30 UTC | May 24, 11:55 UTC | 25m |
| 2026-05-23 | HVN649 | MNL → SGN | May 23, 20:25 UTC | May 24, 09:35 UTC | 13h 10m |
| 2026-05-23 | HVN648 | SGN → MNL | May 23, 18:30 UTC | May 23, 19:00 UTC | 30m |
| 2026-05-23 | HVN502 | SGN → CAN | May 23, 05:15 UTC | May 23, 05:35 UTC | 20m |
| 2026-05-18 | HVN595 | HKG → SGN | May 18, 11:20 UTC | May 18, 11:35 UTC | 15m |
| 2026-05-18 | HVN594 | SGN → HKG | May 18, 09:00 UTC | May 18, 09:10 UTC | 10m |
| 2026-05-17 | HVN649 | MNL → SGN | May 17, 20:35 UTC | May 17, 21:05 UTC | 30m |
| 2026-05-17 | HVN648 | SGN → MNL | May 17, 13:31 UTC | May 17, 19:10 UTC | 5h 40m |
| 2026-05-16 | HVN649 | MNL → SGN | May 16, 21:15 UTC | May 17, 11:50 UTC | 14h 35m |
| 2026-05-16 | HVN648 | SGN → MNL | May 16, 18:20 UTC | May 16, 18:55 UTC | 35m |
| 2026-05-14 | VN431 | ICN → DAD | May 14, 02:35 UTC | May 14, 05:30 UTC | 2h 55m |
| 2026-05-13 | HVN430 | DAD → ICN | May 13, 11:20 UTC | May 13, 20:30 UTC | 9h 10m |
| 2026-05-13 | HVN431 | ICN → DAD | May 13, 02:35 UTC | May 13, 10:05 UTC | 7h 30m |
| 2026-05-12 | HVN430 | DAD → ICN | May 12, 11:20 UTC | May 12, 20:45 UTC | 9h 25m |
| 2026-05-11 | HVN634 | CGK → HAN | May 11, 18:40 UTC | May 12, 09:05 UTC | 14h 25m |
| 2026-05-11 | HVN635 | HAN → CGK | May 11, 17:00 UTC | May 11, 17:15 UTC | 15m |
| 2026-05-11 | HVN614 | BKK → HAN | May 11, 09:05 UTC | May 11, 10:00 UTC | 55m |
| 2026-05-11 | HVN615 | HAN → BKK | May 11, 06:30 UTC | May 11, 07:40 UTC | 1h 10m |
| 2026-05-09 | HVN634 | CGK → HAN | May 9, 18:35 UTC | May 9, 20:05 UTC | 1h 30m |
| 2026-05-08 | HVN618 | BKK → HAN | May 8, 12:44 UTC | May 8, 13:35 UTC | 50m |
| 2026-05-08 | HVN619 | HAN → BKK | May 8, 09:59 UTC | May 8, 11:14 UTC | 1h 15m |
| 2026-05-07 | HVN630 | CGK → SGN | May 7, 07:45 UTC | May 7, 09:15 UTC | 1h 30m |
| 2026-05-07 | HVN631 | SGN → CGK | May 7, 05:20 UTC | May 7, 06:10 UTC | 50m |
| 2026-05-05 | HVN646 | MNL → HAN | May 5, 21:15 UTC | May 5, 21:45 UTC | 30m |
| 2026-05-05 | HVN647 | HAN → MNL | May 5, 18:15 UTC | May 5, 19:45 UTC | 1h 30m |
| 2026-05-04 | HVN660 | SIN → HAN | May 4, 05:35 UTC | May 4, 05:55 UTC | 20m |
| 2026-05-04 | HVN661 | HAN → SIN | May 4, 03:09 UTC | May 4, 03:24 UTC | 15m |
| 2026-05-02 | HVN634 | CGK → HAN | May 2, 18:45 UTC | May 2, 20:15 UTC | 1h 30m |
| 2026-05-01 | HVN441 | ICN → CXR | May 1, 22:05 UTC | May 2, 00:55 UTC | 2h 50m |
| 2026-05-01 | HVN440 | CXR → ICN | May 1, 16:25 UTC | May 1, 19:10 UTC | 2h 45m |
| 2026-04-30 | HVN440 | CXR → ICN | Apr 30, 20:30 UTC | May 1, 19:10 UTC | 22h 40m |
| 2026-04-30 | HVN648 | SGN → MNL | Apr 30, 13:00 UTC | Apr 30, 18:50 UTC | 5h 50m |
| 2026-04-30 | HVN607 | SGN → BKK | Apr 30, 10:45 UTC | Apr 30, 11:25 UTC | 40m |
| 2026-04-26 | HVN435 | PUS → CXR | Apr 26, 00:25 UTC | Apr 26, 03:10 UTC | 2h 45m |
| 2026-04-25 | HVN434 | CXR → PUS | Apr 25, 08:20 UTC | Apr 25, 21:45 UTC | 13h 25m |
| 2026-04-24 | HVN616 | BKK → HAN | Apr 24, 15:15 UTC | Apr 25, 06:45 UTC | 15h 30m |
| 2026-04-24 | HVN614 | BKK → HAN | Apr 24, 09:05 UTC | Apr 24, 14:00 UTC | 4h 55m |
| 2026-04-23 | HVN646 | MNL → HAN | Apr 23, 21:45 UTC | Apr 24, 07:40 UTC | 9h 55m |
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-A623 page for operator, model, and routing details .