Apparatus

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sensors Mode-S transponder

8A0821

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-LZV · BOEING 737-800

Hex
8A0821
Octal
42404041
Decimal
9,046,049
Country
ID
Tail
PK-LZV
Type
B738
No current signal · last broadcast 2h ago
Flights observed
80
Distinct callsigns
20
Country
ID
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 8A0821.

Country allocation

The ICAO 24-bit address 8A0821 falls within the block assigned to Indonesia (ID) by ICAO Annex 10, Volume III. Every aircraft registered in Indonesia 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
BTK7153 Batik Air 6 2026-05-30
BTK7282 Batik Air 5 2026-05-14
BTK7157 Batik Air 5 2026-05-20
BTK7154 Batik Air 5 2026-05-30
BTK7283 Batik Air 4 2026-05-14
BTK7158 Batik Air 4 2026-05-20
BTK7155 Batik Air 4 2026-05-26
BTK7150 Batik Air 4 2026-05-15
BTK6274 Batik Air 4 2026-05-13
BTK6183 Batik Air 4 2026-05-18
BTK7151 Batik Air 3 2026-05-15
BTK6724 Batik Air 3 2026-05-25
BTK6560 Batik Air 3 2026-04-16
BTK7156 Batik Air 2 2026-05-20
BTK6677 Batik Air 2 2026-05-11
BTK6675 Batik Air 2 2026-04-26
BTK6378 Batik Air 2 2026-04-24
BTK6369 Batik Air 2 2026-04-24
BTK6236 Batik Air 2 2026-05-17
MXD6560 - 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BTK7154 SIN → CGK May 30, 04:05 UTCMay 30, 04:15 UTC10m
2026-05-30 BTK7153 CGK → SIN May 30, 00:55 UTCMay 30, 02:06 UTC1h 11m
2026-05-29 BTK7154 SIN → CGK May 29, 03:55 UTCMay 29, 04:15 UTC20m
2026-05-29 BTK7153 CGK → SIN May 29, 01:20 UTCMay 29, 01:45 UTC25m
2026-05-26 BTK7153 CGK → SIN May 26, 13:50 UTCMay 27, 01:59 UTC12h 10m
2026-05-26 BTK7159 CGK → SIN May 26, 07:24 UTCMay 26, 11:44 UTC4h 20m
2026-05-26 BTK7155 CGK → SIN May 26, 04:30 UTCMay 26, 04:54 UTC25m
2026-05-25 BTK6724 CGK → KDI May 25, 20:30 UTCMay 25, 20:40 UTC10m
2026-05-25 BTK7155 CGK → SIN May 25, 05:05 UTCMay 25, 05:30 UTC25m
2026-05-24 BTK7154 SIN → CGK May 24, 03:50 UTCMay 24, 04:05 UTC15m
2026-05-24 BTK7153 CGK → SIN May 24, 00:55 UTCMay 24, 01:45 UTC50m
2026-05-22 BTK6266 CGK → UPG May 22, 08:00 UTCMay 22, 08:25 UTC25m
2026-05-20 BTK6724 CGK → KDI May 20, 20:45 UTCMay 20, 21:15 UTC30m
2026-05-20 BTK7158 SIN → CGK May 20, 15:25 UTCMay 20, 15:35 UTC10m
2026-05-20 BTK7158 SIN → CGK May 20, 14:25 UTCMay 20, 14:55 UTC30m
2026-05-20 BTK7157 CGK → SIN May 20, 12:00 UTCMay 20, 12:35 UTC35m
2026-05-20 BTK7157 CGK → SIN May 20, 11:20 UTCMay 20, 11:30 UTC10m
2026-05-20 BTK7156 SIN → CGK May 20, 07:00 UTCMay 20, 07:25 UTC25m
2026-05-20 BTK7155 CGK → SIN May 20, 04:55 UTCMay 20, 05:20 UTC25m
2026-05-18 BTK6183 UPG → CGK May 18, 16:10 UTCMay 19, 07:00 UTC14h 49m
2026-05-18 BTK6227 PNK → CGK May 18, 12:15 UTCMay 18, 12:35 UTC20m
2026-05-18 BTK6183 UPG → CGK May 18, 06:10 UTCMay 18, 06:25 UTC15m
2026-05-17 BTK6236 CGK → UPG May 17, 23:20 UTCMay 17, 23:45 UTC25m
2026-05-16 BTK7154 SIN → CGK May 16, 04:05 UTCMay 16, 04:20 UTC15m
2026-05-15 BTK7153 CGK → SIN May 15, 15:00 UTCMay 16, 02:05 UTC11h 5m
2026-05-15 BTK7157 CGK → SIN May 15, 12:20 UTCMay 15, 12:45 UTC25m
2026-05-15 BTK7150 SIN → CGK May 15, 08:55 UTCMay 15, 09:05 UTC10m
2026-05-15 BTK7151 CGK → SIN May 15, 06:25 UTCMay 15, 06:50 UTC25m
2026-05-14 BTK7152 SIN → CGK May 14, 13:50 UTCMay 15, 04:15 UTC14h 25m
2026-05-14 BTK7283 KUL → CGK May 14, 06:20 UTCMay 14, 11:50 UTC5h 30m
2026-05-14 BTK7282 CGK → KUL May 14, 03:50 UTCMay 14, 04:55 UTC1h 5m
2026-05-13 BTK6274 CGK → MDC May 13, 18:55 UTCMay 13, 19:05 UTC10m
2026-05-13 BTK7158 SIN → CGK May 13, 14:40 UTCMay 13, 14:55 UTC15m
2026-05-13 BTK7157 CGK → SIN May 13, 12:00 UTCMay 13, 12:20 UTC20m
2026-05-13 BTK7150 SIN → CGK May 13, 08:45 UTCMay 13, 08:55 UTC10m
2026-05-13 BTK7151 CGK → SIN May 13, 06:05 UTCMay 13, 06:35 UTC30m
2026-05-11 BTK6677 AAP → CGK May 11, 11:20 UTCMay 11, 11:35 UTC15m
2026-05-11 BTK7154 SIN → CGK May 11, 04:00 UTCMay 11, 04:15 UTC15m
2026-05-11 BTK7153 CGK → SIN May 11, 01:25 UTCMay 11, 01:50 UTC25m
2026-05-09 BTK7158 SIN → CGK May 9, 14:35 UTCMay 9, 14:50 UTC15m
2026-05-09 BTK7157 CGK → SIN May 9, 12:05 UTCMay 9, 12:30 UTC25m
2026-05-09 BTK7150 SIN → CGK May 9, 09:40 UTCMay 9, 09:50 UTC10m
2026-05-09 BTK7150 SIN → CGK May 9, 08:45 UTCMay 9, 09:00 UTC15m
2026-05-09 BTK7151 CGK → SIN May 9, 05:40 UTCMay 9, 06:40 UTC1h 0m
2026-05-09 BTK6267 UPG → CGK May 9, 03:55 UTCMay 9, 04:25 UTC30m
2026-05-08 BTK6236 CGK → UPG May 8, 23:20 UTCMay 8, 23:30 UTC10m
2026-05-07 BTK6183 UPG → CGK May 7, 06:10 UTCMay 7, 06:45 UTC35m
2026-05-04 BTK7283 KUL → CGK May 4, 06:25 UTCMay 4, 07:20 UTC55m
2026-05-04 BTK7282 CGK → KUL May 4, 03:54 UTCMay 4, 04:50 UTC55m
2026-05-03 BTK6274 CGK → MDC May 3, 18:34 UTCMay 3, 18:45 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 PK-LZV page for operator, model, and routing details .

Mode-S 8A0821 frequently asked

What is Mode-S code 8A0821?
8A0821 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-LZV.
Where is Mode-S 8A0821 registered?
Mode-S code 8A0821 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0821 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0821, octal 42404041, decimal 9,046,049.
What flights does 8A0821 operate?
Mode-S 8A0821 has broadcast 20 distinct callsigns, including BTK7153, BTK7282, BTK7157, BTK7154, BTK7283.