Apparatus

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sensors Mode-S transponder

88821B

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A282 · AIRBUS A-321neo

Hex
88821B
Octal
42101033
Decimal
8,946,203
Country
VN
Tail
VN-A282
Type
A21N
No current signal · last broadcast Jul 26, 17:35 UTC
Flights observed
174
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 17:35 UTC

Last known position

Most recent position reported by Mode-S 88821B.

Country allocation

The ICAO 24-bit address 88821B 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
SPQ927 Servicios Aereos Palenque 46 2026-07-26
SPQ922 Servicios Aereos Palenque 33 2026-07-26
SPQ907 Servicios Aereos Palenque 30 2026-07-19
SPQ942 Servicios Aereos Palenque 17 2026-07-26
SPQ893 Servicios Aereos Palenque 6 2026-07-24
SPQ2961 Servicios Aereos Palenque 6 2026-04-26
SPQ2962 Servicios Aereos Palenque 5 2026-04-24
SPQ946 - 4 2026-06-29
SPQ876 - 4 2026-07-24
SPQ988 - 3 2026-04-22
SPQ961 Servicios Aereos Palenque 2 2026-04-25
SPQ909 Servicios Aereos Palenque 2 2026-06-09
SPQ983 Servicios Aereos Palenque 1 2026-04-24
SPQ936 - 1 2026-07-11
SPQ935 Servicios Aereos Palenque 1 2026-07-11
SPQ925 - 1 2026-07-11
SPQ918 - 1 2026-07-11
SPQ915 - 1 2026-07-11
SPQ906 - 1 2026-07-11
SPQ903 - 1 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SPQ942 DAD → HAN Jul 26, 17:25 UTCJul 26, 17:35 UTC10m
2026-07-26 SPQ927 HAN → DAD Jul 26, 09:55 UTCJul 26, 10:10 UTC15m
2026-07-26 SPQ922 DAD → HAN Jul 26, 00:10 UTCJul 26, 08:25 UTC8h 16m
2026-07-25 SPQ927 HAN → DAD Jul 25, 10:35 UTCJul 25, 10:50 UTC15m
2026-07-24 SPQ893 HAN → SGN Jul 24, 18:15 UTCJul 25, 09:00 UTC14h 45m
2026-07-24 SPQ876 - Jul 24, 16:25 UTCJul 24, 16:35 UTC10m
2026-07-24 SPQ927 HAN → DAD Jul 24, 10:15 UTCJul 24, 10:25 UTC10m
2026-07-23 SPQ893 HAN → SGN Jul 23, 18:20 UTCJul 23, 18:35 UTC15m
2026-07-23 SPQ876 - Jul 23, 16:35 UTCJul 23, 16:45 UTC10m
2026-07-23 SPQ927 HAN → DAD Jul 23, 10:05 UTCJul 23, 10:20 UTC15m
2026-07-23 SPQ922 DAD → HAN Jul 23, 00:35 UTCJul 23, 08:25 UTC7h 50m
2026-07-22 SPQ942 DAD → HAN Jul 22, 00:30 UTCJul 22, 18:00 UTC17h 30m
2026-07-21 SPQ927 - Jul 21, 09:55 UTCJul 21, 17:10 UTC7h 15m
2026-07-21 SPQ922 DAD → HAN Jul 21, 00:30 UTCJul 21, 08:30 UTC8h 0m
2026-07-20 SPQ876 - Jul 20, 15:15 UTCJul 20, 15:25 UTC10m
2026-07-20 SPQ927 - Jul 20, 09:40 UTCJul 20, 09:55 UTC15m
2026-07-20 SPQ922 - Jul 20, 08:05 UTCJul 20, 08:25 UTC20m
2026-07-19 SPQ893 HAN → SGN Jul 19, 18:50 UTCJul 19, 19:00 UTC10m
2026-07-19 SPQ927 - Jul 19, 11:35 UTCJul 19, 11:45 UTC10m
2026-07-19 SPQ922 - Jul 19, 08:30 UTCJul 19, 08:50 UTC20m
2026-07-19 SPQ907 HAN → DAD Jul 19, 00:35 UTCJul 19, 00:45 UTC10m
2026-07-18 SPQ927 - Jul 18, 09:30 UTCJul 18, 09:45 UTC15m
2026-07-17 SPQ893 HAN → SGN Jul 17, 18:25 UTCJul 18, 07:55 UTC13h 31m
2026-07-16 SPQ893 HAN → SGN Jul 16, 18:00 UTCJul 17, 08:04 UTC14h 5m
2026-07-16 SPQ876 - Jul 16, 16:25 UTCJul 16, 16:35 UTC10m
2026-07-16 SPQ927 - Jul 16, 09:55 UTCJul 16, 10:10 UTC15m
2026-07-16 SPQ907 - Jul 16, 00:30 UTCJul 16, 00:40 UTC10m
2026-07-15 SPQ927 - Jul 15, 09:50 UTCJul 15, 10:05 UTC15m
2026-07-15 SPQ922 - Jul 15, 00:20 UTCJul 15, 08:25 UTC8h 5m
2026-07-14 SPQ942 - Jul 14, 16:30 UTCJul 14, 16:40 UTC10m
2026-07-14 SPQ927 - Jul 14, 09:20 UTCJul 14, 09:45 UTC25m
2026-07-14 SPQ922 - Jul 14, 07:45 UTCJul 14, 08:00 UTC15m
2026-07-14 SPQ907 - Jul 14, 00:30 UTCJul 14, 00:40 UTC10m
2026-07-13 SPQ927 - Jul 13, 09:45 UTCJul 13, 10:00 UTC15m
2026-07-13 SPQ922 - Jul 13, 07:50 UTCJul 13, 08:01 UTC10m
2026-07-13 SPQ907 - Jul 13, 00:20 UTCJul 13, 00:35 UTC15m
2026-07-12 - - Jul 12, 16:45 UTCJul 12, 16:55 UTC10m
2026-07-12 SPQ927 - Jul 12, 09:45 UTCJul 12, 09:55 UTC10m
2026-07-11 SPQ893 HAN → SGN Jul 11, 17:40 UTCJul 11, 17:50 UTC10m
2026-07-11 SPQ936 - Jul 11, 15:35 UTCJul 11, 15:45 UTC10m
2026-07-11 SPQ935 HAN → DAD Jul 11, 12:50 UTCJul 11, 13:05 UTC15m
2026-07-11 SPQ925 - Jul 11, 08:20 UTCJul 11, 08:30 UTC10m
2026-07-11 SPQ918 - Jul 11, 06:50 UTCJul 11, 07:00 UTC10m
2026-07-11 SPQ915 - Jul 11, 04:10 UTCJul 11, 04:25 UTC15m
2026-07-11 SPQ906 - Jul 11, 01:30 UTCJul 11, 01:40 UTC10m
2026-07-10 SPQ903 - Jul 10, 22:55 UTCJul 10, 23:10 UTC15m
2026-07-10 SPQ942 - Jul 10, 17:00 UTCJul 10, 17:10 UTC10m
2026-07-10 SPQ927 - Jul 10, 09:50 UTCJul 10, 10:05 UTC15m
2026-07-10 SPQ922 - Jul 10, 07:45 UTCJul 10, 08:00 UTC15m
2026-07-10 SPQ907 - Jul 10, 00:30 UTCJul 10, 00:40 UTC10m

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-A282 page for operator, model, and routing details .

Mode-S 88821B frequently asked

What is Mode-S code 88821B?
88821B is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A282.
Where is Mode-S 88821B registered?
Mode-S code 88821B is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88821B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88821B, octal 42101033, decimal 8,946,203.
What flights does 88821B operate?
Mode-S 88821B has broadcast 20 distinct callsigns, including SPQ927, SPQ922, SPQ907, SPQ942, SPQ893.