Apparatus

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sensors Mode-S transponder

88821C

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A284 · AIRBUS A-321neo

Hex
88821C
Octal
42101034
Decimal
8,946,204
Country
VN
Tail
VN-A284
Type
A21N
No current signal · last broadcast Jul 26, 16:55 UTC
Flights observed
220
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 16:55 UTC

Last known position

Most recent position reported by Mode-S 88821C.

Country allocation

The ICAO 24-bit address 88821C 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
SPQ1224 - 17 2026-07-20
SPQ1244 - 16 2026-07-25
SPQ510 Servicios Aereos Palenque 15 2026-07-25
SPQ451 Servicios Aereos Palenque 14 2026-05-13
SPQ1206 Servicios Aereos Palenque 14 2026-07-20
SPQ1245 Servicios Aereos Palenque 12 2026-07-20
SPQ1207 Servicios Aereos Palenque 11 2026-07-20
SPQ1225 Servicios Aereos Palenque 10 2026-07-20
SPQ905 Servicios Aereos Palenque 9 2026-07-23
SPQ452 Servicios Aereos Palenque 8 2026-05-12
SPQ908 - 6 2026-07-06
SPQ893 Servicios Aereos Palenque 6 2026-07-26
SPQ511 Servicios Aereos Palenque 6 2026-07-25
SPQ450 Servicios Aereos Palenque 6 2026-04-22
SPQ1221 - 6 2026-06-30
SPQ1232 - 5 2026-07-26
SPQ802 Servicios Aereos Palenque 4 2026-07-24
SPQ863 Servicios Aereos Palenque 3 2026-06-13
SPQ1218 - 3 2026-07-06
SPQ943 Servicios Aereos Palenque 2 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SPQ893 HAN → SGN Jul 26, 16:25 UTCJul 26, 16:55 UTC30m
2026-07-26 SPQ1232 - Jul 26, 04:55 UTCJul 26, 13:40 UTC8h 46m
2026-07-25 SPQ1203 HAN → PQC Jul 25, 22:55 UTCJul 26, 03:30 UTC4h 35m
2026-07-25 SPQ1244 - Jul 25, 16:50 UTCJul 25, 17:05 UTC15m
2026-07-25 SPQ511 TPE → PQC Jul 25, 10:50 UTCJul 25, 11:50 UTC1h 0m
2026-07-25 SPQ510 PQC → TPE Jul 25, 03:15 UTCJul 25, 09:40 UTC6h 25m
2026-07-24 SPQ802 SGN → HAN Jul 24, 15:30 UTCJul 25, 00:15 UTC8h 45m
2026-07-24 SPQ1157 HAN → CXR Jul 24, 10:10 UTCJul 24, 14:00 UTC3h 50m
2026-07-23 SPQ905 HAN → DAD Jul 23, 23:50 UTCJul 24, 00:00 UTC10m
2026-07-23 SPQ1240 - Jul 23, 10:30 UTCJul 23, 15:00 UTC4h 30m
2026-07-23 SPQ915 HAN → DAD Jul 23, 06:05 UTCJul 23, 09:00 UTC2h 55m
2026-07-23 SPQ1142 CXR → HAN Jul 23, 04:30 UTCJul 23, 04:40 UTC10m
2026-07-23 SPQ1143 HAN → CXR Jul 23, 00:45 UTCJul 23, 01:00 UTC15m
2026-07-22 SPQ879 HAN → SGN Jul 22, 13:10 UTCJul 22, 19:40 UTC6h 30m
2026-07-22 SPQ1230 PQC → HAN Jul 22, 11:20 UTCJul 22, 11:45 UTC25m
2026-07-22 SPQ1209 HAN → PQC Jul 22, 01:35 UTCJul 22, 01:50 UTC15m
2026-07-21 SPQ802 SGN → HAN Jul 21, 14:40 UTCJul 22, 00:05 UTC9h 25m
2026-07-21 SPQ868 - Jul 21, 08:55 UTCJul 21, 13:30 UTC4h 35m
2026-07-21 SPQ920 DAD → HAN Jul 21, 07:15 UTCJul 21, 07:25 UTC10m
2026-07-20 SPQ905 HAN → DAD Jul 20, 23:25 UTCJul 20, 23:40 UTC15m
2026-07-20 SPQ1245 HAN → PQC Jul 20, 12:15 UTCJul 20, 16:25 UTC4h 10m
2026-07-20 SPQ1224 - Jul 20, 10:35 UTCJul 20, 10:50 UTC15m
2026-07-20 SPQ1225 HAN → PQC Jul 20, 06:35 UTCJul 20, 06:50 UTC15m
2026-07-20 SPQ1206 PQC → HAN Jul 20, 04:50 UTCJul 20, 05:10 UTC20m
2026-07-20 SPQ1207 HAN → PQC Jul 20, 00:45 UTCJul 20, 01:00 UTC15m
2026-07-19 SPQ1225 HAN → PQC Jul 19, 07:05 UTCJul 19, 07:25 UTC20m
2026-07-19 SPQ1206 PQC → HAN Jul 19, 04:45 UTCJul 19, 05:25 UTC40m
2026-07-19 SPQ1207 HAN → PQC Jul 19, 00:35 UTCJul 19, 00:50 UTC15m
2026-07-10 SPQ9284 - Jul 10, 13:40 UTCJul 10, 13:55 UTC15m
2026-07-07 SPQ905 - Jul 7, 23:35 UTCJul 7, 23:50 UTC15m
2026-07-07 SPQ511 - Jul 7, 09:35 UTCJul 7, 16:10 UTC6h 35m
2026-07-07 SPQ510 - Jul 7, 01:20 UTCJul 7, 08:10 UTC6h 50m
2026-07-06 SPQ802 - Jul 6, 23:45 UTCJul 6, 23:55 UTC10m
2026-07-06 SPQ893 HAN → SGN Jul 6, 17:20 UTCJul 6, 17:35 UTC15m
2026-07-06 - - Jul 6, 15:45 UTCJul 6, 15:55 UTC10m
2026-07-06 SPQ927 - Jul 6, 09:50 UTCJul 6, 10:10 UTC20m
2026-07-06 SPQ1218 - Jul 6, 04:05 UTCJul 6, 08:35 UTC4h 30m
2026-07-06 SPQ908 - Jul 6, 02:15 UTCJul 6, 02:25 UTC10m
2026-07-05 SPQ905 - Jul 5, 23:35 UTCJul 5, 23:55 UTC20m
2026-07-05 SPQ1240 - Jul 5, 10:45 UTCJul 5, 15:10 UTC4h 25m
2026-07-05 SPQ1218 - Jul 5, 03:50 UTCJul 5, 08:25 UTC4h 35m
2026-07-04 SPQ905 - Jul 4, 23:35 UTCJul 5, 02:25 UTC2h 50m
2026-07-04 SPQ932 DAD → HAN Jul 4, 11:00 UTCJul 4, 14:05 UTC3h 5m
2026-07-04 SPQ1219 - Jul 4, 04:15 UTCJul 4, 08:50 UTC4h 35m
2026-07-03 SPQ908 - Jul 3, 23:25 UTCJul 4, 02:55 UTC3h 30m
2026-07-03 SPQ1244 PQC → HAN Jul 3, 16:25 UTCJul 3, 16:45 UTC20m
2026-07-03 SPQ1245 HAN → PQC Jul 3, 12:20 UTCJul 3, 12:40 UTC20m
2026-07-03 SPQ1225 - Jul 3, 06:25 UTCJul 3, 10:55 UTC4h 30m
2026-07-03 SPQ1207 - Jul 3, 00:40 UTCJul 3, 05:00 UTC4h 20m
2026-07-02 SPQ937 - Jul 2, 13:40 UTCJul 2, 19:40 UTC6h 0m

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-A284 page for operator, model, and routing details .

Mode-S 88821C frequently asked

What is Mode-S code 88821C?
88821C is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A284.
Where is Mode-S 88821C registered?
Mode-S code 88821C is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88821C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88821C, octal 42101034, decimal 8,946,204.
What flights does 88821C operate?
Mode-S 88821C has broadcast 20 distinct callsigns, including SPQ1224, SPQ1244, SPQ510, SPQ451, SPQ1206.