Apparatus

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sensors Mode-S transponder

8A0A12

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-BBH · BOEING 737-800

Hex
8A0A12
Octal
42405022
Decimal
9,046,546
Country
ID
Tail
PK-BBH
Type
B738
No current signal · last broadcast 12d ago
Flights observed
70
Distinct callsigns
16
Country
ID
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S 8A0A12.

Country allocation

The ICAO 24-bit address 8A0A12 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 16 distinct

Callsign Airline Flights Last seen
SJY598 Sriwijaya Air 25 2026-05-24
SJY599 Sriwijaya Air 22 2026-05-21
SJY185 Sriwijaya Air 4 2026-05-07
SJY580 Sriwijaya Air 3 2026-05-15
SJY713 Sriwijaya Air 2 2026-05-13
SJY712 Sriwijaya Air 2 2026-05-01
SJY076 - 2 2026-05-20
SJY073 - 2 2026-05-01
SJY592 Sriwijaya Air 1 2026-05-11
SJY581 Sriwijaya Air 1 2026-05-13
SJY2722 Sriwijaya Air 1 2026-05-17
SJY272 Sriwijaya Air 1 2026-05-14
SJY184 Sriwijaya Air 1 2026-04-30
SJY077 - 1 2026-05-11
SJY072 - 1 2026-05-01
SJY055 Sriwijaya Air 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-24 SJY598 CGK → UPG May 24, 15:20 UTCMay 24, 16:00 UTC40m
2026-05-23 SJY598 CGK → UPG May 23, 19:20 UTCMay 24, 12:35 UTC17h 15m
2026-05-22 SJY598 CGK → UPG May 22, 15:30 UTCMay 22, 15:55 UTC25m
2026-05-21 SJY598 CGK → UPG May 21, 15:35 UTCMay 21, 16:01 UTC25m
2026-05-21 SJY599 UPG → CGK May 21, 11:15 UTCMay 21, 11:45 UTC30m
2026-05-20 SJY598 CGK → UPG May 20, 15:15 UTCMay 21, 11:45 UTC20h 30m
2026-05-20 SJY076 - May 20, 10:25 UTCMay 20, 10:35 UTC10m
2026-05-19 SJY598 CGK → UPG May 19, 15:25 UTCMay 19, 15:50 UTC25m
2026-05-19 SJY599 UPG → CGK May 19, 11:25 UTCMay 19, 12:00 UTC35m
2026-05-18 SJY599 UPG → CGK May 18, 15:40 UTCMay 19, 12:00 UTC20h 19m
2026-05-17 SJY2722 CGK → DPS May 17, 10:55 UTCMay 17, 11:20 UTC25m
2026-05-16 SJY598 CGK → UPG May 16, 15:31 UTCMay 16, 15:55 UTC25m
2026-05-15 SJY580 CGK → UPG May 15, 10:10 UTCMay 15, 10:35 UTC25m
2026-05-14 SJY598 CGK → UPG May 14, 16:50 UTCMay 14, 17:15 UTC25m
2026-05-14 SJY272 CGK → DPS May 14, 11:25 UTCMay 14, 15:25 UTC4h 0m
2026-05-14 SJY599 UPG → CGK May 14, 09:30 UTCMay 14, 09:40 UTC10m
2026-05-13 SJY713 YIA → UPG May 13, 16:00 UTCMay 13, 16:10 UTC10m
2026-05-13 SJY580 CGK → UPG May 13, 10:15 UTCMay 13, 14:35 UTC4h 20m
2026-05-13 SJY581 UPG → CGK May 13, 06:40 UTCMay 13, 06:50 UTC10m
2026-05-11 SJY592 CGK → UPG May 11, 16:45 UTCMay 11, 17:05 UTC21m
2026-05-11 SJY077 - May 11, 13:30 UTCMay 11, 13:45 UTC15m
2026-05-11 SJY599 UPG → CGK May 11, 09:00 UTCMay 11, 09:20 UTC20m
2026-05-10 SJY598 CGK → UPG May 10, 15:29 UTCMay 10, 15:49 UTC20m
2026-05-10 SJY599 UPG → CGK May 10, 09:45 UTCMay 10, 10:00 UTC15m
2026-05-09 SJY598 CGK → UPG May 9, 15:30 UTCMay 9, 16:05 UTC35m
2026-05-09 SJY599 UPG → CGK May 9, 11:10 UTCMay 9, 11:40 UTC30m
2026-05-08 SJY598 CGK → UPG May 8, 15:35 UTCMay 9, 11:40 UTC20h 5m
2026-05-08 SJY599 UPG → CGK May 8, 09:09 UTCMay 8, 09:25 UTC15m
2026-05-07 SJY598 CGK → UPG May 7, 15:35 UTCMay 7, 15:55 UTC20m
2026-05-07 SJY185 PNK → CGK May 7, 12:30 UTCMay 7, 12:45 UTC15m
2026-05-06 SJY598 CGK → UPG May 6, 15:30 UTCMay 7, 07:50 UTC16h 20m
2026-05-06 SJY599 UPG → CGK May 6, 08:45 UTCMay 6, 09:00 UTC15m
2026-05-05 SJY598 CGK → UPG May 5, 15:25 UTCMay 5, 15:50 UTC25m
2026-05-05 SJY599 UPG → CGK May 5, 11:10 UTCMay 5, 11:45 UTC35m
2026-05-04 SJY598 CGK → UPG May 4, 15:35 UTCMay 5, 11:45 UTC20h 11m
2026-05-04 SJY599 UPG → CGK May 4, 11:40 UTCMay 4, 11:50 UTC10m
2026-05-04 SJY599 UPG → CGK May 4, 09:15 UTCMay 4, 09:25 UTC10m
2026-05-03 SJY598 CGK → UPG May 3, 15:30 UTCMay 3, 15:55 UTC25m
2026-05-03 SJY599 UPG → CGK May 3, 08:40 UTCMay 3, 08:50 UTC10m
2026-05-02 SJY598 CGK → UPG May 2, 15:30 UTCMay 2, 15:55 UTC25m
2026-05-01 SJY713 YIA → UPG May 1, 16:35 UTCMay 2, 11:40 UTC19h 6m
2026-05-01 SJY712 UPG → YIA May 1, 14:50 UTCMay 1, 15:15 UTC25m
2026-05-01 SJY712 UPG → YIA May 1, 13:00 UTCMay 1, 13:35 UTC35m
2026-05-01 SJY580 CGK → UPG May 1, 07:30 UTCMay 1, 12:25 UTC4h 55m
2026-05-01 SJY073 - May 1, 05:35 UTCMay 1, 05:50 UTC15m
2026-05-01 SJY072 - May 1, 03:05 UTCMay 1, 03:15 UTC10m
2026-04-30 SJY185 PNK → CGK Apr 30, 10:25 UTCApr 30, 10:40 UTC15m
2026-04-30 SJY184 CGK → PNK Apr 30, 07:15 UTCApr 30, 07:30 UTC15m
2026-04-30 SJY073 - Apr 30, 05:40 UTCApr 30, 05:55 UTC15m
2026-04-30 SJY055 TJQ → CGK Apr 30, 02:00 UTCApr 30, 02:10 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-BBH page for operator, model, and routing details .

Mode-S 8A0A12 frequently asked

What is Mode-S code 8A0A12?
8A0A12 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-BBH.
Where is Mode-S 8A0A12 registered?
Mode-S code 8A0A12 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0A12 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0A12, octal 42405022, decimal 9,046,546.
What flights does 8A0A12 operate?
Mode-S 8A0A12 has broadcast 16 distinct callsigns, including SJY598, SJY599, SJY185, SJY580, SJY713.