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sensors Mode-S transponder

8881EF

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A543 · AIRBUS A-321neo

Hex
8881EF
Octal
42100757
Decimal
8,946,159
Country
VN
Tail
VN-A543
Type
A21N
No current signal · last broadcast Jul 26, 16:00 UTC
Flights observed
269
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 16:00 UTC

Last known position

Most recent position reported by Mode-S 8881EF.

Country allocation

The ICAO 24-bit address 8881EF 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
VJC7079 VietJet Air 8 2026-07-20
VJC7078 - 8 2026-07-20
VJC883 - 7 2026-07-11
VJC868 VietJet Air 7 2026-07-25
VJC834 - 7 2026-07-17
VJC828 - 6 2026-07-03
VJC3908 - 6 2026-07-20
VJC272 VietJet Air 6 2026-07-20
VJC947 - 5 2026-07-16
VJC946 - 5 2026-07-16
VJC884 - 5 2026-07-11
VJC835 - 5 2026-07-17
VJC829 - 5 2026-07-04
VJC273 VietJet Air 5 2026-07-20
VJC907 VietJet Air 4 2026-06-17
VJC869 - 4 2026-07-08
VJC862 - 4 2026-07-15
VJC3909 - 4 2026-07-20
VJC1802 - 4 2026-07-10
VJC979 VietJet Air 3 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VJC861 ICN → SGN Jul 26, 13:10 UTCJul 26, 16:00 UTC2h 50m
2026-07-25 VJC860 SGN → ICN Jul 25, 23:40 UTCJul 26, 11:00 UTC11h 21m
2026-07-25 VJC868 SGN → PUS Jul 25, 09:20 UTCJul 25, 22:15 UTC12h 55m
2026-07-25 VJC868 SGN → PUS Jul 25, 00:30 UTCJul 25, 22:15 UTC21h 45m
2026-07-24 VJC977 ICN → PQC Jul 24, 22:45 UTCJul 25, 20:50 UTC22h 5m
2026-07-24 VJC976 PQC → ICN Jul 24, 18:25 UTCJul 24, 21:15 UTC2h 50m
2026-07-23 VJC976 PQC → ICN Jul 23, 21:50 UTCJul 24, 21:15 UTC23h 25m
2026-07-23 VJC979 ICN → PQC Jul 23, 19:50 UTCJul 24, 19:35 UTC23h 45m
2026-07-23 VJC979 ICN → PQC Jul 23, 19:35 UTCJul 23, 22:25 UTC2h 50m
2026-07-23 VJC978 PQC → ICN Jul 23, 07:10 UTCJul 23, 17:55 UTC10h 45m
2026-07-22 VJC844 PQC → TPE Jul 22, 11:20 UTCJul 23, 05:40 UTC18h 20m
2026-07-21 VJC121 HAN → SGN Jul 21, 23:20 UTCJul 21, 23:35 UTC15m
2026-07-21 VJC998 - Jul 21, 13:55 UTCJul 21, 14:10 UTC15m
2026-07-21 VJC997 HAN → DPS Jul 21, 03:50 UTCJul 21, 11:55 UTC8h 5m
2026-07-20 VJC3909 - Jul 20, 19:25 UTCJul 21, 02:10 UTC6h 44m
2026-07-20 VJC3908 - Jul 20, 17:05 UTCJul 20, 17:40 UTC35m
2026-07-20 VJC273 HPH → SGN Jul 20, 11:50 UTCJul 20, 12:05 UTC15m
2026-07-20 VJC7079 MFM → HPH Jul 20, 10:25 UTCJul 20, 10:50 UTC25m
2026-07-20 VJC7079 MFM → HPH Jul 20, 09:20 UTCJul 20, 09:30 UTC10m
2026-07-20 VJC7078 - Jul 20, 06:25 UTCJul 20, 06:50 UTC25m
2026-07-20 VJC272 SGN → HPH Jul 20, 05:10 UTCJul 20, 05:25 UTC15m
2026-07-20 VJC197 - Jul 20, 00:50 UTCJul 20, 01:10 UTC20m
2026-07-19 VJC7527 CAN → HAN Jul 19, 19:30 UTCJul 19, 20:35 UTC1h 5m
2026-07-19 VJC7526 HAN → CAN Jul 19, 16:20 UTCJul 19, 16:40 UTC20m
2026-07-19 VJC949 - Jul 19, 11:20 UTCJul 19, 12:20 UTC1h 0m
2026-07-19 VJC948 - Jul 19, 07:30 UTCJul 19, 09:55 UTC2h 25m
2026-07-19 VJC1772 - Jul 19, 00:35 UTCJul 19, 04:55 UTC4h 20m
2026-07-18 VJC784 CXR → HAN Jul 18, 18:05 UTCJul 18, 18:20 UTC15m
2026-07-17 VJC835 - Jul 17, 22:15 UTCJul 18, 13:00 UTC14h 46m
2026-07-17 VJC834 - Jul 17, 20:15 UTCJul 17, 21:05 UTC50m
2026-07-17 VJC834 - Jul 17, 10:40 UTCJul 17, 19:09 UTC8h 30m
2026-07-17 VJC5512 - Jul 17, 03:25 UTCJul 17, 09:35 UTC6h 10m
2026-07-16 VJC963 - Jul 16, 22:05 UTCJul 16, 22:35 UTC30m
2026-07-16 VJC962 - Jul 16, 16:40 UTCJul 16, 20:39 UTC4h 0m
2026-07-16 VJC947 - Jul 16, 11:10 UTCJul 16, 12:05 UTC55m
2026-07-16 VJC946 - Jul 16, 08:05 UTCJul 16, 10:15 UTC2h 10m
2026-07-16 VJC961 - Jul 16, 06:30 UTCJul 16, 06:40 UTC10m
2026-07-16 VJC961 - Jul 16, 03:05 UTCJul 16, 03:55 UTC50m
2026-07-15 VJC862 - Jul 15, 22:15 UTCJul 16, 01:15 UTC3h 0m
2026-07-15 VJC273 - Jul 15, 12:55 UTCJul 15, 13:10 UTC15m
2026-07-15 VJC7079 - Jul 15, 11:10 UTCJul 15, 11:30 UTC20m
2026-07-15 VJC7078 - Jul 15, 06:15 UTCJul 15, 06:40 UTC25m
2026-07-15 VJC272 - Jul 15, 04:55 UTCJul 15, 05:05 UTC10m
2026-07-14 VJC273 - Jul 14, 11:40 UTCJul 14, 11:50 UTC10m
2026-07-14 VJC7079 - Jul 14, 08:50 UTCJul 14, 10:25 UTC1h 35m
2026-07-14 VJC7078 - Jul 14, 06:05 UTCJul 14, 06:30 UTC25m
2026-07-14 VJC272 - Jul 14, 04:50 UTCJul 14, 05:05 UTC15m
2026-07-13 VJC1806 - Jul 13, 09:00 UTCJul 13, 22:35 UTC13h 35m
2026-07-12 VJC1805 - Jul 12, 21:50 UTCJul 13, 21:45 UTC23h 55m
2026-07-12 VJC896 - Jul 12, 20:05 UTCJul 13, 15:50 UTC19h 45m

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-A543 page for operator, model, and routing details .

Mode-S 8881EF frequently asked

What is Mode-S code 8881EF?
8881EF is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A543.
Where is Mode-S 8881EF registered?
Mode-S code 8881EF is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8881EF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8881EF, octal 42100757, decimal 8,946,159.
What flights does 8881EF operate?
Mode-S 8881EF has broadcast 20 distinct callsigns, including VJC7079, VJC7078, VJC883, VJC868, VJC834.