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 3h ago
Flights observed
36
Distinct callsigns
12
Country
VN
Last broadcast
3h ago

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 12 distinct

Callsign Airline Flights Last seen
SPQ927 Servicios Aereos Palenque 6 2026-06-02
SPQ2961 Servicios Aereos Palenque 6 2026-04-26
SPQ2962 Servicios Aereos Palenque 5 2026-04-24
SPQ907 Servicios Aereos Palenque 4 2026-06-02
SPQ988 - 3 2026-04-22
SPQ922 Servicios Aereos Palenque 3 2026-06-01
SPQ961 Servicios Aereos Palenque 2 2026-04-25
SPQ942 Servicios Aereos Palenque 2 2026-06-02
SPQ983 Servicios Aereos Palenque 1 2026-04-24
SPQ1985 - 1 2026-04-16
SPQ1984 - 1 2026-04-16
SPQ1964 Servicios Aereos Palenque 1 2026-04-16

Recent flights last 36

DateFlightRouteTakeoffLandingDuration
2026-06-02 SPQ942 DAD → HAN Jun 2, 16:15 UTCJun 2, 16:25 UTC10m
2026-06-02 SPQ927 HAN → DAD Jun 2, 09:40 UTCJun 2, 10:10 UTC30m
2026-06-02 SPQ907 HAN → DAD Jun 2, 00:30 UTCJun 2, 08:20 UTC7h 50m
2026-06-01 SPQ927 HAN → DAD Jun 1, 09:30 UTCJun 1, 16:30 UTC7h 0m
2026-06-01 SPQ922 DAD → HAN Jun 1, 00:15 UTCJun 1, 08:05 UTC7h 50m
2026-05-31 SPQ927 HAN → DAD May 31, 09:25 UTCMay 31, 16:45 UTC7h 20m
2026-05-31 SPQ907 HAN → DAD May 31, 00:25 UTCMay 31, 00:40 UTC15m
2026-05-30 SPQ927 HAN → DAD May 30, 09:25 UTCMay 30, 16:20 UTC6h 55m
2026-05-30 SPQ922 DAD → HAN May 30, 07:30 UTCMay 30, 07:45 UTC15m
2026-05-30 SPQ907 HAN → DAD May 30, 00:15 UTCMay 30, 00:35 UTC20m
2026-05-29 SPQ927 HAN → DAD May 29, 09:50 UTCMay 29, 16:50 UTC7h 0m
2026-05-29 SPQ922 DAD → HAN May 29, 00:30 UTCMay 29, 08:25 UTC7h 55m
2026-05-28 SPQ927 HAN → DAD May 28, 09:25 UTCMay 28, 16:25 UTC7h 0m
2026-05-28 SPQ907 HAN → DAD May 28, 00:25 UTCMay 28, 08:00 UTC7h 35m
2026-05-27 SPQ942 DAD → HAN May 27, 16:45 UTCMay 27, 17:10 UTC25m
2026-04-26 SPQ2961 DAD → PQC Apr 26, 03:15 UTCApr 26, 05:20 UTC2h 5m
2026-04-25 SPQ961 DAD → SGN Apr 25, 03:25 UTCApr 25, 03:35 UTC10m
2026-04-24 SPQ983 DAD → SGN Apr 24, 13:10 UTCApr 24, 13:20 UTC10m
2026-04-24 SPQ2962 PQC → DAD Apr 24, 05:10 UTCApr 24, 05:25 UTC15m
2026-04-23 SPQ2961 DAD → PQC Apr 23, 13:35 UTCApr 24, 03:30 UTC13h 54m
2026-04-23 SPQ2961 DAD → PQC Apr 23, 03:05 UTCApr 23, 05:00 UTC1h 56m
2026-04-22 SPQ988 - Apr 22, 13:25 UTCApr 22, 13:35 UTC10m
2026-04-22 SPQ2962 PQC → DAD Apr 22, 02:55 UTCApr 22, 05:10 UTC2h 15m
2026-04-21 SPQ2961 DAD → PQC Apr 21, 03:10 UTCApr 21, 05:05 UTC1h 55m
2026-04-20 SPQ2962 PQC → DAD Apr 20, 04:55 UTCApr 20, 05:05 UTC10m
2026-04-20 SPQ2961 DAD → PQC Apr 20, 03:00 UTCApr 20, 03:15 UTC15m
2026-04-19 SPQ2961 DAD → PQC Apr 19, 03:00 UTCApr 19, 05:00 UTC2h 0m
2026-04-18 SPQ988 - Apr 18, 13:25 UTCApr 18, 13:35 UTC10m
2026-04-18 SPQ2962 PQC → DAD Apr 18, 05:05 UTCApr 18, 05:15 UTC10m
2026-04-18 SPQ2962 PQC → DAD Apr 18, 03:25 UTCApr 18, 05:15 UTC1h 50m
2026-04-17 SPQ988 - Apr 17, 13:25 UTCApr 17, 13:40 UTC15m
2026-04-17 - - Apr 17, 12:15 UTCApr 17, 12:25 UTC10m
2026-04-17 SPQ961 DAD → SGN Apr 17, 03:20 UTCApr 17, 03:30 UTC10m
2026-04-16 SPQ1984 - Apr 16, 13:20 UTCApr 16, 14:00 UTC40m
2026-04-16 SPQ1985 - Apr 16, 11:49 UTCApr 16, 12:00 UTC10m
2026-04-16 SPQ1964 PQC → SGN Apr 16, 05:49 UTCApr 16, 06:10 UTC20m

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 3h ago.
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 12 distinct callsigns, including SPQ927, SPQ2961, SPQ2962, SPQ907, SPQ988.