Apparatus

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sensors Mode-S transponder

8A0520

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-LAY · AIRBUS A-320

Hex
8A0520
Octal
42402440
Decimal
9,045,280
Country
ID
Tail
PK-LAY
Type
A320
Broadcasting now · callsign BTK6864 · 3,025 ft
Flights observed
230
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 15:05 UTC

Current position

8A0520 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 8A0520 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
BTK6862 Batik Air 7 2026-06-17
BTK7630 - 6 2026-06-18
BTK6863 - 6 2026-06-18
BTK6269 Batik Air 6 2026-07-25
BTK7151 Batik Air 5 2026-04-21
BTK6288 Batik Air 5 2026-07-22
BTK7150 Batik Air 4 2026-04-21
BTK6805 - 4 2026-06-29
BTK6804 - 4 2026-06-29
BTK6362 - 4 2026-07-20
BTK6292 Batik Air 4 2026-07-21
BTK7631 - 3 2026-06-18
BTK7368 - 3 2026-06-29
BTK7157 Batik Air 3 2026-04-20
BTK7055 Batik Air 3 2026-05-19
BTK6899 - 3 2026-06-26
BTK6898 - 3 2026-06-24
BTK6887 - 3 2026-06-19
BTK6820 - 3 2026-06-27
BTK6807 - 3 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 BTK6231 UPG → CGK Jul 25, 22:40 UTCJul 26, 15:05 UTC16h 26m
2026-07-25 BTK6269 UPG → CGK Jul 25, 13:55 UTCJul 25, 14:30 UTC35m
2026-07-24 BTK6142 CGK → UPG Jul 24, 14:10 UTCJul 25, 14:00 UTC23h 50m
2026-07-24 BTK6143 UPG → CGK Jul 24, 12:25 UTCJul 24, 12:55 UTC30m
2026-07-22 BTK6288 CGK → UPG Jul 22, 17:40 UTCJul 22, 18:05 UTC25m
2026-07-22 BTK6269 UPG → CGK Jul 22, 14:10 UTCJul 22, 14:45 UTC35m
2026-07-21 BTK6269 UPG → CGK Jul 21, 17:20 UTCJul 22, 14:45 UTC21h 25m
2026-07-21 BTK6292 CGK → UPG Jul 21, 02:25 UTCJul 21, 12:20 UTC9h 55m
2026-07-21 BTK7369 SRG → CGK Jul 21, 00:30 UTCJul 21, 01:00 UTC30m
2026-07-20 BTK6362 - Jul 20, 12:50 UTCJul 20, 13:15 UTC25m
2026-07-20 BTK8889 AMQ → CGK Jul 20, 03:10 UTCJul 20, 03:25 UTC15m
2026-07-19 BTK8890 CGK → AMQ Jul 19, 18:05 UTCJul 19, 18:40 UTC35m
2026-07-19 BTK6269 UPG → CGK Jul 19, 14:00 UTCJul 19, 14:25 UTC25m
2026-07-18 BTK6142 CGK → UPG Jul 18, 12:20 UTCJul 18, 12:40 UTC20m
2026-07-18 BTK6141 TTE → CGK Jul 18, 07:00 UTCJul 18, 07:15 UTC15m
2026-07-18 BTK6141 TTE → CGK Jul 18, 05:35 UTCJul 18, 05:50 UTC15m
2026-07-18 BTK6141 TTE → CGK Jul 18, 04:10 UTCJul 18, 04:20 UTC10m
2026-07-17 BTK6353 - Jul 17, 11:55 UTCJul 17, 12:04 UTC10m
2026-07-17 BTK6352 - Jul 17, 09:40 UTCJul 17, 10:05 UTC25m
2026-07-17 BTK7780 SOQ → CGK Jul 17, 06:35 UTCJul 17, 06:50 UTC15m
2026-07-16 BTK7797 - Jul 16, 17:45 UTCJul 16, 18:05 UTC20m
2026-07-16 BTK6293 - Jul 16, 12:00 UTCJul 16, 12:09 UTC10m
2026-07-16 BTK6292 - Jul 16, 02:10 UTCJul 16, 02:35 UTC25m
2026-07-15 BTK6578 - Jul 15, 08:50 UTCJul 15, 12:05 UTC3h 15m
2026-07-15 BTK6171 - Jul 15, 06:10 UTCJul 15, 06:25 UTC15m
2026-06-30 BTK6588 - Jun 30, 13:15 UTCJun 30, 13:45 UTC30m
2026-06-30 BTK6293 UPG → CGK Jun 30, 11:45 UTCJun 30, 12:00 UTC15m
2026-06-30 BTK6292 - Jun 30, 02:05 UTCJun 30, 02:15 UTC10m
2026-06-30 BTK6375 - Jun 30, 00:04 UTCJun 30, 00:55 UTC50m
2026-06-29 BTK7368 - Jun 29, 10:44 UTCJun 29, 11:10 UTC25m
2026-06-29 BTK6805 - Jun 29, 04:55 UTCJun 29, 05:50 UTC55m
2026-06-29 BTK6804 - Jun 29, 03:29 UTCJun 29, 03:44 UTC15m
2026-06-29 BTK6804 - Jun 29, 02:50 UTCJun 29, 02:59 UTC10m
2026-06-28 BTK7066 - Jun 28, 23:34 UTCJun 29, 00:54 UTC1h 20m
2026-06-28 BTK7065 - Jun 28, 11:09 UTCJun 28, 12:19 UTC1h 10m
2026-06-28 BTK6565 - Jun 28, 09:15 UTCJun 28, 09:25 UTC10m
2026-06-28 BTK6564 - Jun 28, 06:20 UTCJun 28, 07:05 UTC45m
2026-06-28 BTK6805 - Jun 28, 04:55 UTCJun 28, 05:09 UTC15m
2026-06-28 BTK6805 - Jun 28, 04:10 UTCJun 28, 04:25 UTC15m
2026-06-28 BTK6804 - Jun 28, 02:10 UTCJun 28, 03:00 UTC50m
2026-06-28 BTK7369 - Jun 28, 00:39 UTCJun 28, 00:55 UTC15m
2026-06-27 BTK6362 CGK → SRG Jun 27, 12:50 UTCJun 27, 13:09 UTC20m
2026-06-27 BTK6821 - Jun 27, 09:50 UTCJun 27, 10:10 UTC20m
2026-06-27 BTK6820 - Jun 27, 07:34 UTCJun 27, 07:45 UTC10m
2026-06-27 BTK6711 TKG → CGK Jun 27, 06:05 UTCJun 27, 06:19 UTC15m
2026-06-27 BTK6710 CGK → TKG Jun 27, 04:24 UTCJun 27, 04:39 UTC15m
2026-06-26 BTK6899 - Jun 26, 09:35 UTCJun 27, 02:35 UTC17h 0m
2026-06-26 BTK6801 - Jun 26, 07:14 UTCJun 26, 08:30 UTC1h 15m
2026-06-26 BTK6800 - Jun 26, 05:10 UTCJun 26, 06:15 UTC1h 5m
2026-06-26 BTK7540 - Jun 26, 03:20 UTCJun 26, 03:50 UTC30m

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

Mode-S 8A0520 frequently asked

What is Mode-S code 8A0520?
8A0520 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-LAY.
Where is Mode-S 8A0520 registered?
Mode-S code 8A0520 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0520 broadcasting right now?
Yes. Mode-S 8A0520 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0520, octal 42402440, decimal 9,045,280.
What flights does 8A0520 operate?
Mode-S 8A0520 has broadcast 20 distinct callsigns, including BTK6862, BTK7630, BTK6863, BTK6269, BTK7151.