Apparatus

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sensors Mode-S transponder

8881B5

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A513 · AIRBUS A-320neo

Hex
8881B5
Octal
42100665
Decimal
8,946,101
Country
VN
Tail
VN-A513
Type
A20N
No current signal · last broadcast Jul 26, 17:30 UTC
Flights observed
297
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 17:30 UTC

Last known position

Most recent position reported by Mode-S 8881B5.

Country allocation

The ICAO 24-bit address 8881B5 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
HVN1641 Vietnam Airlines 36 2026-07-26
HVN1623 Vietnam Airlines 31 2026-07-26
HVN178 Vietnam Airlines 30 2026-07-26
HVN1549 Vietnam Airlines 27 2026-07-23
HVN177 Vietnam Airlines 26 2026-07-26
HVN1622 Vietnam Airlines 19 2026-07-23
HVN1548 - 16 2026-07-23
HVN1640 - 14 2026-07-18
HVN1824 Vietnam Airlines 11 2026-04-26
HVN1825 Vietnam Airlines 10 2026-04-26
HVN188 Vietnam Airlines 7 2026-07-22
HVN187 Vietnam Airlines 7 2026-07-24
HVN1340 Vietnam Airlines 7 2026-04-24
HVN7561 Vietnam Airlines 5 2026-07-25
HVN7560 Vietnam Airlines 5 2026-07-25
HVN1266 Vietnam Airlines 5 2026-04-26
HVN7627 - 4 2026-07-16
HVN7626 - 3 2026-07-16
HVN7651 - 2 2026-07-19
HVN7650 Vietnam Airlines 2 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HVN7062 DAD → HAN Jul 26, 17:10 UTCJul 26, 17:30 UTC20m
2026-07-26 HVN7063 - Jul 26, 14:45 UTCJul 26, 14:55 UTC10m
2026-07-26 HVN178 DAD → HAN Jul 26, 12:35 UTCJul 26, 12:55 UTC20m
2026-07-26 HVN177 HAN → DAD Jul 26, 09:55 UTCJul 26, 10:10 UTC15m
2026-07-26 HVN1623 HAN → UIH Jul 26, 04:35 UTCJul 26, 08:10 UTC3h 36m
2026-07-26 HVN1641 HAN → VCL Jul 26, 00:30 UTCJul 26, 03:25 UTC2h 55m
2026-07-25 HVN1624 UIH → HAN Jul 25, 10:40 UTCJul 25, 14:00 UTC3h 20m
2026-07-25 HVN162 DAD → HAN Jul 25, 09:00 UTCJul 25, 09:15 UTC15m
2026-07-25 HVN161 HAN → DAD Jul 25, 06:15 UTCJul 25, 06:30 UTC15m
2026-07-25 HVN7560 CXR → HAN Jul 25, 04:35 UTCJul 25, 04:50 UTC15m
2026-07-25 HVN7561 HAN → CXR Jul 25, 00:50 UTCJul 25, 01:15 UTC25m
2026-07-24 HVN7190 - Jul 24, 17:25 UTCJul 24, 18:05 UTC40m
2026-07-24 HVN7191 - Jul 24, 15:00 UTCJul 24, 15:20 UTC20m
2026-07-24 HVN187 HAN → DAD Jul 24, 11:00 UTCJul 24, 13:45 UTC2h 45m
2026-07-24 HVN1623 HAN → UIH Jul 24, 05:00 UTCJul 24, 05:10 UTC10m
2026-07-24 HVN1641 HAN → VCL Jul 24, 00:40 UTCJul 24, 00:55 UTC15m
2026-07-23 HVN1548 - Jul 23, 16:45 UTCJul 23, 17:00 UTC15m
2026-07-23 HVN1549 HAN → HUI Jul 23, 14:35 UTCJul 23, 14:50 UTC15m
2026-07-23 HVN178 DAD → HAN Jul 23, 13:00 UTCJul 23, 13:20 UTC20m
2026-07-23 HVN177 HAN → DAD Jul 23, 09:50 UTCJul 23, 10:10 UTC20m
2026-07-23 HVN1622 UIH → HAN Jul 23, 04:45 UTCJul 23, 08:10 UTC3h 25m
2026-07-23 HVN1641 HAN → VCL Jul 23, 00:40 UTCJul 23, 03:25 UTC2h 45m
2026-07-22 HVN188 DAD → HAN Jul 22, 13:25 UTCJul 22, 13:45 UTC20m
2026-07-22 HVN187 HAN → DAD Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 HVN7560 CXR → HAN Jul 22, 00:20 UTCJul 22, 04:25 UTC4h 5m
2026-07-21 HVN188 DAD → HAN Jul 21, 13:20 UTCJul 21, 13:40 UTC20m
2026-07-21 HVN187 HAN → DAD Jul 21, 10:50 UTCJul 21, 11:05 UTC15m
2026-07-21 HVN1622 UIH → HAN Jul 21, 08:00 UTCJul 21, 08:10 UTC10m
2026-07-21 HVN1623 HAN → UIH Jul 21, 04:55 UTCJul 21, 05:15 UTC20m
2026-07-21 HVN1641 HAN → VCL Jul 21, 00:35 UTCJul 21, 03:35 UTC3h 0m
2026-07-20 HVN1549 HAN → HUI Jul 20, 14:15 UTCJul 20, 16:50 UTC2h 35m
2026-07-20 HVN178 DAD → HAN Jul 20, 09:45 UTCJul 20, 12:55 UTC3h 10m
2026-07-20 HVN1622 UIH → HAN Jul 20, 07:45 UTCJul 20, 08:00 UTC15m
2026-07-20 HVN1623 HAN → UIH Jul 20, 04:45 UTCJul 20, 04:55 UTC10m
2026-07-20 HVN1641 HAN → VCL Jul 20, 00:35 UTCJul 20, 03:15 UTC2h 40m
2026-07-19 HVN1548 - Jul 19, 17:40 UTCJul 19, 17:50 UTC10m
2026-07-19 HVN1549 HAN → HUI Jul 19, 15:30 UTCJul 19, 15:45 UTC15m
2026-07-19 HVN178 DAD → HAN Jul 19, 13:00 UTCJul 19, 13:10 UTC10m
2026-07-19 HVN177 - Jul 19, 10:35 UTCJul 19, 10:55 UTC20m
2026-07-19 HVN7650 TBB → HAN Jul 19, 05:00 UTCJul 19, 05:35 UTC35m
2026-07-19 HVN7651 - Jul 19, 01:40 UTCJul 19, 01:55 UTC15m
2026-07-19 HVN7590 VDH → HAN Jul 19, 00:20 UTCJul 19, 00:30 UTC10m
2026-07-18 HVN7591 - Jul 18, 22:15 UTCJul 18, 22:30 UTC15m
2026-07-18 HVN1548 - Jul 18, 16:10 UTCJul 18, 16:20 UTC10m
2026-07-18 HVN1549 HAN → HUI Jul 18, 13:55 UTCJul 18, 14:10 UTC15m
2026-07-18 HVN178 DAD → HAN Jul 18, 09:35 UTCJul 18, 12:35 UTC3h 0m
2026-07-18 HVN1622 - Jul 18, 07:30 UTCJul 18, 07:40 UTC10m
2026-07-18 HVN1623 - Jul 18, 04:35 UTCJul 18, 04:50 UTC15m
2026-07-18 HVN1640 - Jul 18, 02:50 UTCJul 18, 03:05 UTC15m
2026-07-18 HVN1641 - Jul 18, 00:25 UTCJul 18, 00:39 UTC15m

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-A513 page for operator, model, and routing details .

Mode-S 8881B5 frequently asked

What is Mode-S code 8881B5?
8881B5 is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A513.
Where is Mode-S 8881B5 registered?
Mode-S code 8881B5 is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8881B5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8881B5, octal 42100665, decimal 8,946,101.
What flights does 8881B5 operate?
Mode-S 8881B5 has broadcast 20 distinct callsigns, including HVN1641, HVN1623, HVN178, HVN1549, HVN177.