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 3h ago
Flights observed
160
Distinct callsigns
20
Country
ID
Last broadcast
3h 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 - 13 2026-07-14
BTK7282 - 12 2026-06-17
BTK7155 - 12 2026-07-11
BTK7283 - 11 2026-06-17
BTK7159 - 11 2026-07-12
BTK7157 - 10 2026-07-02
BTK7152 - 10 2026-07-10
BTK7154 - 9 2026-07-14
BTK7158 - 7 2026-06-22
BTK7151 - 7 2026-07-11
BTK7150 - 7 2026-07-06
BTK6724 Batik Air 5 2026-07-07
BTK6183 Batik Air 5 2026-06-08
BTK6274 Batik Air 4 2026-05-13
BTK7156 Batik Air 3 2026-06-03
BTK6560 Batik Air 3 2026-04-16
BTK6743 - 2 2026-07-10
BTK6677 Batik Air 2 2026-05-11
BTK6675 Batik Air 2 2026-04-26
BTK6378 Batik Air 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BTK7154 - Jul 14, 03:55 UTCJul 14, 04:05 UTC10m
2026-07-14 BTK7153 - Jul 14, 01:25 UTCJul 14, 01:50 UTC25m
2026-07-13 BTK7153 - Jul 13, 04:05 UTCJul 14, 01:50 UTC21h 45m
2026-07-12 BTK7153 - Jul 12, 14:20 UTCJul 13, 02:05 UTC11h 45m
2026-07-12 BTK7159 - Jul 12, 09:15 UTCJul 12, 12:40 UTC3h 25m
2026-07-11 BTK7151 - Jul 11, 13:55 UTCJul 12, 06:50 UTC16h 55m
2026-07-11 BTK7159 - Jul 11, 07:40 UTCJul 11, 11:55 UTC4h 15m
2026-07-11 BTK7155 - Jul 11, 04:50 UTCJul 11, 05:15 UTC25m
2026-07-10 BTK7152 - Jul 10, 14:05 UTCJul 10, 14:15 UTC10m
2026-07-10 BTK7159 - Jul 10, 07:15 UTCJul 10, 11:55 UTC4h 40m
2026-07-10 BTK7155 - Jul 10, 04:05 UTCJul 10, 05:25 UTC1h 20m
2026-07-10 BTK6743 - Jul 10, 02:00 UTCJul 10, 02:15 UTC15m
2026-07-09 BTK7152 - Jul 9, 15:05 UTCJul 9, 15:20 UTC15m
2026-07-09 BTK7152 - Jul 9, 14:00 UTCJul 9, 14:25 UTC25m
2026-07-09 BTK7159 - Jul 9, 11:15 UTCJul 9, 12:40 UTC1h 25m
2026-07-09 BTK7155 - Jul 9, 04:40 UTCJul 9, 05:05 UTC25m
2026-07-07 BTK6724 CGK → KDI Jul 7, 20:30 UTCJul 7, 20:50 UTC20m
2026-07-07 BTK6273 - Jul 7, 15:25 UTCJul 7, 15:40 UTC15m
2026-07-06 BTK7150 - Jul 6, 08:50 UTCJul 6, 09:00 UTC10m
2026-07-06 BTK7151 - Jul 6, 06:15 UTCJul 6, 06:40 UTC25m
2026-07-04 BTK7152 - Jul 4, 13:55 UTCJul 4, 14:10 UTC15m
2026-07-04 BTK7159 CGK → SIN Jul 4, 07:20 UTCJul 4, 12:00 UTC4h 40m
2026-07-04 BTK7155 - Jul 4, 04:30 UTCJul 4, 05:00 UTC30m
2026-07-02 BTK7152 - Jul 2, 14:00 UTCJul 2, 14:10 UTC10m
2026-07-02 BTK7159 CGK → SIN Jul 2, 05:25 UTCJul 2, 11:55 UTC6h 30m
2026-07-02 BTK7157 - Jul 2, 02:45 UTCJul 2, 03:10 UTC25m
2026-07-01 BTK8396 - Jul 1, 19:50 UTCJul 1, 20:35 UTC45m
2026-07-01 BTK8393 - Jul 1, 13:30 UTCJul 1, 18:15 UTC4h 45m
2026-07-01 BTK8387 - Jul 1, 05:35 UTCJul 1, 11:50 UTC6h 15m
2026-07-01 BTK7157 - Jul 1, 03:00 UTCJul 1, 03:45 UTC45m
2026-06-30 BTK7066 - Jun 30, 23:55 UTCJul 1, 01:20 UTC1h 25m
2026-06-30 BTK7065 - Jun 30, 11:20 UTCJun 30, 12:20 UTC1h 0m
2026-06-22 BTK7158 - Jun 22, 05:49 UTCJun 22, 06:05 UTC15m
2026-06-22 BTK7157 - Jun 22, 03:05 UTCJun 22, 03:30 UTC25m
2026-06-21 BTK7154 - Jun 21, 03:59 UTCJun 21, 04:10 UTC10m
2026-06-20 BTK7153 - Jun 20, 05:19 UTCJun 21, 01:39 UTC20h 20m
2026-06-20 BTK7157 - Jun 20, 02:44 UTCJun 20, 03:14 UTC30m
2026-06-19 BTK7154 - Jun 19, 03:39 UTCJun 19, 05:00 UTC1h 20m
2026-06-19 BTK7153 - Jun 19, 01:34 UTCJun 19, 01:59 UTC25m
2026-06-18 BTK7155 - Jun 18, 04:35 UTCJun 18, 05:00 UTC25m
2026-06-17 BTK7152 - Jun 17, 14:00 UTCJun 17, 14:15 UTC15m
2026-06-17 BTK7159 CGK → SIN Jun 17, 11:30 UTCJun 17, 11:55 UTC25m
2026-06-17 BTK7283 - Jun 17, 06:30 UTCJun 17, 07:20 UTC50m
2026-06-17 BTK7282 - Jun 17, 04:50 UTCJun 17, 05:00 UTC10m
2026-06-17 BTK7282 - Jun 17, 03:50 UTCJun 17, 04:15 UTC25m
2026-06-16 BTK7283 - Jun 16, 06:30 UTCJun 17, 04:15 UTC21h 46m
2026-06-16 BTK7282 - Jun 16, 03:45 UTCJun 16, 04:45 UTC1h 0m
2026-06-15 BTK7151 - Jun 15, 06:35 UTCJun 15, 09:25 UTC2h 50m
2026-06-12 BTK7153 - Jun 12, 13:55 UTCJun 13, 02:00 UTC12h 5m
2026-06-12 BTK7159 CGK → SIN Jun 12, 07:30 UTCJun 12, 11:45 UTC4h 15m

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 3h 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, BTK7155, BTK7283, BTK7159.