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sensors Mode-S transponder

8881AB

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A523 · AIRBUS A-321neo

Hex
8881AB
Octal
42100653
Decimal
8,946,091
Country
VN
Tail
VN-A523
Type
A21N
No current signal · last broadcast 10h ago
Flights observed
229
Distinct callsigns
20
Country
VN
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 8881AB.

Country allocation

The ICAO 24-bit address 8881AB 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
VJC822 - 19 2026-07-10
VJC821 - 16 2026-07-06
VJC823 - 15 2026-07-11
VJC820 - 14 2026-07-06
VJC933 - 11 2026-06-16
VJC91 - 11 2026-06-19
VJC92 - 10 2026-07-04
VJC932 - 8 2026-06-15
VJC883 VietJet Air 7 2026-05-14
VJC877 - 7 2026-07-03
VJC876 - 7 2026-07-03
VJC947 VietJet Air 6 2026-04-20
VJC1804 VietJet Air 5 2026-05-16
VJC946 VietJet Air 4 2026-04-18
VJC934 - 4 2026-06-15
VJC860 VietJet Air 4 2026-06-17
VJC948 - 3 2026-04-13
VJC935 VietJet Air 3 2026-06-15
VJC885 - 3 2026-07-08
VJC884 VietJet Air 3 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 VJC157 HAN → SGN Jul 14, 13:00 UTCJul 14, 13:10 UTC10m
2026-07-14 VJC433 - Jul 14, 06:40 UTCJul 14, 06:55 UTC15m
2026-07-14 VJC939 - Jul 14, 00:45 UTCJul 14, 01:45 UTC1h 0m
2026-07-13 VJC938 - Jul 13, 18:35 UTCJul 13, 22:55 UTC4h 20m
2026-07-13 VJC561 HAN → HUI Jul 13, 13:10 UTCJul 13, 13:20 UTC10m
2026-07-13 VJC423 - Jul 13, 09:00 UTCJul 13, 09:15 UTC15m
2026-07-13 VJC921 - Jul 13, 02:45 UTCJul 13, 03:50 UTC1h 5m
2026-07-12 VJC920 - Jul 12, 21:05 UTCJul 13, 01:15 UTC4h 10m
2026-07-12 VJC157 HAN → SGN Jul 12, 14:40 UTCJul 12, 14:55 UTC15m
2026-07-11 VJC823 - Jul 11, 01:00 UTCJul 11, 05:05 UTC4h 5m
2026-07-10 VJC822 - Jul 10, 19:40 UTCJul 10, 23:15 UTC3h 35m
2026-07-10 VJC193 - Jul 10, 12:35 UTCJul 10, 12:50 UTC15m
2026-07-10 VJC142 - Jul 10, 10:45 UTCJul 10, 11:10 UTC25m
2026-07-10 VJC135 - Jul 10, 05:55 UTCJul 10, 06:10 UTC15m
2026-07-09 VJC425 - Jul 9, 04:45 UTCJul 9, 04:55 UTC10m
2026-07-08 VJC150 SGN → HAN Jul 8, 16:55 UTCJul 8, 17:05 UTC10m
2026-07-08 VJC885 - Jul 8, 04:40 UTCJul 8, 05:00 UTC20m
2026-07-07 VJC886 - Jul 7, 14:05 UTCJul 8, 03:35 UTC13h 30m
2026-07-07 VJC854 - Jul 7, 07:25 UTCJul 7, 12:55 UTC5h 30m
2026-07-07 VJC855 - Jul 7, 05:30 UTCJul 7, 05:55 UTC25m
2026-07-06 VJC821 - Jul 6, 17:25 UTCJul 6, 21:00 UTC3h 35m
2026-07-06 VJC820 KHH → HND Jul 6, 04:40 UTCJul 6, 15:20 UTC10h 40m
2026-07-05 VJC821 HND → KHH Jul 5, 17:05 UTCJul 6, 03:40 UTC10h 35m
2026-07-05 VJC823 NRT → HND Jul 5, 01:00 UTCJul 5, 15:30 UTC14h 30m
2026-07-04 VJC822 - Jul 4, 13:35 UTCJul 4, 22:45 UTC9h 10m
2026-07-04 VJC92 - Jul 4, 02:45 UTCJul 4, 12:10 UTC9h 25m
2026-07-03 VJC877 HKG → PER Jul 3, 12:55 UTCJul 4, 00:50 UTC11h 55m
2026-07-03 VJC876 - Jul 3, 10:15 UTCJul 3, 10:25 UTC10m
2026-07-03 VJC823 - Jul 3, 00:35 UTCJul 3, 04:25 UTC3h 50m
2026-07-02 VJC822 TPE → NRT Jul 2, 12:25 UTCJul 2, 22:25 UTC10h 0m
2026-07-01 VJC842 - Jul 1, 16:50 UTCJul 2, 10:40 UTC17h 50m
2026-07-01 VJC286 - Jul 1, 15:55 UTCJul 1, 16:10 UTC15m
2026-07-01 VJC854 - Jul 1, 06:45 UTCJul 1, 08:15 UTC1h 30m
2026-06-27 VJC821 - Jun 27, 17:25 UTCJun 28, 05:49 UTC12h 25m
2026-06-27 VJC823 NRT → HND Jun 27, 01:09 UTCJun 27, 15:34 UTC14h 25m
2026-06-26 VJC822 - Jun 26, 20:04 UTCJun 26, 23:34 UTC3h 30m
2026-06-26 VJC877 - Jun 26, 12:29 UTCJun 26, 12:44 UTC15m
2026-06-26 VJC876 - Jun 26, 10:39 UTCJun 26, 10:50 UTC10m
2026-06-26 VJC823 - Jun 26, 01:20 UTCJun 26, 05:10 UTC3h 50m
2026-06-25 VJC822 - Jun 25, 19:54 UTCJun 25, 23:34 UTC3h 40m
2026-06-25 VJC822 - Jun 25, 03:29 UTCJun 25, 23:34 UTC20h 5m
2026-06-25 VJC822 KIX → NRT Jun 25, 01:30 UTCJun 25, 23:34 UTC22h 5m
2026-06-24 VJC828 - Jun 24, 11:20 UTCJun 25, 00:05 UTC12h 45m
2026-06-24 VJC8510 - Jun 24, 03:29 UTCJun 24, 09:59 UTC6h 30m
2026-06-23 VJC767 HPH → PQC Jun 23, 08:54 UTCJun 24, 02:00 UTC17h 5m
2026-06-23 VJC766 PQC → HPH Jun 23, 07:45 UTCJun 23, 08:04 UTC20m
2026-06-23 VJC127 HAN → SGN Jun 23, 01:15 UTCJun 23, 01:40 UTC25m
2026-06-22 VJC169 HAN → SGN Jun 22, 16:54 UTCJun 22, 23:55 UTC7h 0m
2026-06-22 VJC273 HPH → SGN Jun 22, 11:09 UTCJun 22, 15:35 UTC4h 25m
2026-06-22 VJC7079 - Jun 22, 08:44 UTCJun 22, 09:54 UTC1h 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-A523 page for operator, model, and routing details .

Mode-S 8881AB frequently asked

What is Mode-S code 8881AB?
8881AB is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A523.
Where is Mode-S 8881AB registered?
Mode-S code 8881AB is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8881AB broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8881AB, octal 42100653, decimal 8,946,091.
What flights does 8881AB operate?
Mode-S 8881AB has broadcast 20 distinct callsigns, including VJC822, VJC821, VJC823, VJC820, VJC933.