Apparatus

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sensors Mode-S transponder

888173

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A629 · AIRBUS A-321

Hex
888173
Octal
42100563
Decimal
8,946,035
Country
VN
Tail
VN-A629
Type
A321
No current signal · last broadcast Jul 26, 13:30 UTC
Flights observed
263
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 13:30 UTC

Last known position

Most recent position reported by Mode-S 888173.

Country allocation

The ICAO 24-bit address 888173 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
VJC925 - 10 2026-06-24
VJC926 VietJet Air 9 2026-06-24
VJC960 VietJet Air 8 2026-07-18
VJC671 VietJet Air 8 2026-06-25
VJC670 VietJet Air 8 2026-06-25
VJC878 - 6 2026-07-16
VJC813 - 6 2026-07-04
VJC961 - 5 2026-07-19
VJC879 - 5 2026-07-16
VJC769 VietJet Air 5 2026-06-24
VJC768 VietJet Air 5 2026-06-24
VJC489 - 5 2026-07-08
VJC488 - 5 2026-07-08
VJC982 - 4 2026-07-17
VJC970 - 4 2026-07-01
VJC948 - 4 2026-07-14
VJC946 - 4 2026-07-13
VJC858 - 4 2026-07-15
VJC270 VietJet Air 4 2026-06-19
VJC981 VietJet Air 3 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VJC985 HKG → PQC Jul 26, 13:20 UTCJul 26, 13:30 UTC10m
2026-07-26 VJC986 PQC → HKG Jul 26, 11:20 UTCJul 26, 11:35 UTC15m
2026-07-25 VJC853 RMQ → SGN Jul 25, 08:30 UTCJul 25, 21:45 UTC13h 15m
2026-07-24 VJC852 SGN → RMQ Jul 24, 19:30 UTCJul 25, 07:15 UTC11h 45m
2026-07-24 VJC3908 - Jul 24, 17:25 UTCJul 24, 17:55 UTC30m
2026-07-24 VJC853 RMQ → SGN Jul 24, 08:05 UTCJul 24, 08:55 UTC50m
2026-07-24 VJC852 SGN → RMQ Jul 24, 05:50 UTCJul 24, 06:35 UTC45m
2026-07-23 VJC877 HKG → SGN Jul 23, 12:30 UTCJul 23, 12:45 UTC15m
2026-07-23 VJC876 SGN → HKG Jul 23, 10:35 UTCJul 23, 10:55 UTC20m
2026-07-23 VJC812 SIN → SGN Jul 23, 05:35 UTCJul 23, 05:55 UTC20m
2026-07-22 VJC811 SGN → SIN Jul 22, 22:55 UTCJul 23, 03:55 UTC5h 0m
2026-07-22 VJC7526 HAN → CAN Jul 22, 16:10 UTCJul 22, 16:25 UTC15m
2026-07-22 VJC776 - Jul 22, 10:20 UTCJul 22, 13:50 UTC3h 30m
2026-07-22 VJC450 PQC → HAN Jul 22, 03:45 UTCJul 22, 04:05 UTC20m
2026-07-21 VJC449 HAN → PQC Jul 21, 23:50 UTCJul 22, 00:10 UTC20m
2026-07-21 VJC518 - Jul 21, 14:40 UTCJul 21, 14:55 UTC15m
2026-07-21 VJC517 - Jul 21, 11:50 UTCJul 21, 12:05 UTC15m
2026-07-21 VJC774 - Jul 21, 10:20 UTCJul 21, 10:30 UTC10m
2026-07-21 VJC787 HAN → CXR Jul 21, 06:45 UTCJul 21, 07:00 UTC15m
2026-07-21 VJC564 HUI → HAN Jul 21, 05:10 UTCJul 21, 05:25 UTC15m
2026-07-21 VJC563 HAN → HUI Jul 21, 02:55 UTCJul 21, 03:10 UTC15m
2026-07-21 VJC514 DAD → HAN Jul 21, 01:40 UTCJul 21, 01:50 UTC10m
2026-07-20 VJC501 HAN → DAD Jul 20, 23:15 UTCJul 20, 23:25 UTC10m
2026-07-20 VJC776 - Jul 20, 13:30 UTCJul 20, 13:40 UTC10m
2026-07-20 VJC773 - Jul 20, 09:55 UTCJul 20, 10:05 UTC10m
2026-07-20 VJC508 - Jul 20, 08:15 UTCJul 20, 08:35 UTC20m
2026-07-20 VJC515 HAN → DAD Jul 20, 05:45 UTCJul 20, 06:00 UTC15m
2026-07-20 VJC462 VCA → HAN Jul 20, 04:20 UTCJul 20, 04:40 UTC20m
2026-07-20 VJC461 HAN → VCA Jul 20, 00:15 UTCJul 20, 00:30 UTC15m
2026-07-19 VJC526 - Jul 19, 18:05 UTCJul 19, 18:15 UTC10m
2026-07-19 VJC523 HAN → DAD Jul 19, 15:25 UTCJul 19, 15:40 UTC15m
2026-07-19 VJC420 TBB → HAN Jul 19, 12:50 UTCJul 19, 13:00 UTC10m
2026-07-19 VJC419 - Jul 19, 09:40 UTCJul 19, 09:55 UTC15m
2026-07-19 VJC961 - Jul 19, 02:25 UTCJul 19, 06:10 UTC3h 45m
2026-07-18 VJC960 HAN → ICN Jul 18, 19:00 UTCJul 18, 22:50 UTC3h 50m
2026-07-18 VJC780 - Jul 18, 15:35 UTCJul 18, 15:45 UTC10m
2026-07-18 VJC781 - Jul 18, 12:00 UTCJul 18, 12:15 UTC15m
2026-07-18 VJC456 - Jul 18, 06:30 UTCJul 18, 10:50 UTC4h 20m
2026-07-17 VJC981 PUS → HAN Jul 17, 23:35 UTCJul 18, 00:04 UTC30m
2026-07-17 VJC982 - Jul 17, 21:55 UTCJul 17, 22:15 UTC20m
2026-07-17 VJC982 - Jul 17, 18:29 UTCJul 17, 18:50 UTC20m
2026-07-16 VJC879 - Jul 16, 22:35 UTCJul 17, 13:55 UTC15h 20m
2026-07-16 VJC878 KHH → ICN Jul 16, 08:30 UTCJul 16, 21:10 UTC12h 40m
2026-07-15 VJC8520 - Jul 15, 19:35 UTCJul 16, 07:30 UTC11h 55m
2026-07-15 VJC858 - Jul 15, 11:40 UTCJul 15, 18:25 UTC6h 45m
2026-07-15 VJC983 - Jul 15, 10:10 UTCJul 15, 10:40 UTC30m
2026-07-15 VJC1453 - Jul 15, 05:20 UTCJul 15, 05:30 UTC10m
2026-07-15 VJC981 - Jul 15, 02:55 UTCJul 15, 03:05 UTC10m
2026-07-14 VJC981 - Jul 14, 23:30 UTCJul 14, 23:50 UTC20m
2026-07-14 VJC982 - Jul 14, 18:35 UTCJul 14, 22:20 UTC3h 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-A629 page for operator, model, and routing details .

Mode-S 888173 frequently asked

What is Mode-S code 888173?
888173 is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A629.
Where is Mode-S 888173 registered?
Mode-S code 888173 is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 888173 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 888173, octal 42100563, decimal 8,946,035.
What flights does 888173 operate?
Mode-S 888173 has broadcast 20 distinct callsigns, including VJC925, VJC926, VJC960, VJC671, VJC670.