Apparatus

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sensors Mode-S transponder

8A0A11

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-BBF · BOEING 737-800

Hex
8A0A11
Octal
42405021
Decimal
9,046,545
Country
ID
Tail
PK-BBF
Type
B738
No current signal · last broadcast 10h ago
Flights observed
128
Distinct callsigns
18
Country
ID
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 8A0A11.

Country allocation

The ICAO 24-bit address 8A0A11 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 18 distinct

Callsign Airline Flights Last seen
SJY599 - 29 2026-07-13
SJY598 - 29 2026-07-13
SJY185 - 17 2026-07-08
SJY073 - 15 2026-07-08
SJY055 - 11 2026-07-08
SJY054 - 6 2026-07-06
SJY580 - 4 2026-06-27
SJY072 - 4 2026-06-07
SJY9079 - 2 2026-07-12
SJY581 - 2 2026-07-10
SJY184 - 2 2026-06-27
SJYY598 - 1 2026-05-27
SJY592 - 1 2026-07-08
SJY272 - 1 2026-07-05
SJY225 Sriwijaya Air 1 2026-06-01
SJY224 Sriwijaya Air 1 2026-06-28
BBL772 - 1 2026-05-21
BBL771 - 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SJY598 - Jul 13, 15:20 UTCJul 13, 15:45 UTC25m
2026-07-13 SJY599 - Jul 13, 09:25 UTCJul 13, 09:40 UTC15m
2026-07-12 SJY598 - Jul 12, 16:45 UTCJul 12, 17:10 UTC25m
2026-07-12 SJY9079 - Jul 12, 13:10 UTCJul 12, 13:25 UTC15m
2026-07-12 SJY599 UPG → CGK Jul 12, 09:05 UTCJul 12, 09:20 UTC15m
2026-07-11 SJY598 - Jul 11, 15:30 UTCJul 11, 15:50 UTC20m
2026-07-11 SJY599 UPG → CGK Jul 11, 11:50 UTCJul 11, 12:00 UTC10m
2026-07-10 SJY598 - Jul 10, 18:25 UTCJul 10, 18:55 UTC30m
2026-07-10 SJY581 - Jul 10, 08:40 UTCJul 10, 08:55 UTC15m
2026-07-09 SJY598 - Jul 9, 15:35 UTCJul 9, 16:05 UTC30m
2026-07-09 SJY599 UPG → CGK Jul 9, 11:50 UTCJul 9, 12:20 UTC30m
2026-07-08 SJY592 - Jul 8, 14:30 UTCJul 9, 12:20 UTC21h 50m
2026-07-08 SJY185 - Jul 8, 10:30 UTCJul 8, 10:45 UTC15m
2026-07-08 SJY073 - Jul 8, 06:05 UTCJul 8, 06:20 UTC15m
2026-07-08 SJY055 - Jul 8, 01:55 UTCJul 8, 02:10 UTC15m
2026-07-07 SJY185 - Jul 7, 10:45 UTCJul 7, 11:05 UTC20m
2026-07-07 SJY073 - Jul 7, 05:55 UTCJul 7, 06:15 UTC20m
2026-07-07 SJY055 - Jul 7, 01:45 UTCJul 7, 01:55 UTC10m
2026-07-06 SJY054 - Jul 6, 23:25 UTCJul 6, 23:35 UTC10m
2026-07-06 SJY185 - Jul 6, 10:25 UTCJul 6, 10:40 UTC15m
2026-07-06 SJY073 - Jul 6, 05:35 UTCJul 6, 05:50 UTC15m
2026-07-06 SJY055 - Jul 6, 01:30 UTCJul 6, 01:50 UTC20m
2026-07-05 SJY272 - Jul 5, 12:40 UTCJul 5, 16:55 UTC4h 15m
2026-07-05 SJY185 - Jul 5, 11:05 UTCJul 5, 11:15 UTC10m
2026-07-05 SJY073 - Jul 5, 05:40 UTCJul 5, 06:00 UTC20m
2026-07-05 SJY055 - Jul 5, 01:45 UTCJul 5, 02:05 UTC20m
2026-07-04 SJY9079 - Jul 4, 13:55 UTCJul 4, 14:15 UTC20m
2026-07-04 SJY185 - Jul 4, 10:00 UTCJul 4, 10:20 UTC20m
2026-07-04 SJY073 - Jul 4, 05:35 UTCJul 4, 05:55 UTC20m
2026-07-04 SJY055 - Jul 4, 01:40 UTCJul 4, 02:00 UTC20m
2026-07-03 SJY599 UPG → CGK Jul 3, 08:50 UTCJul 3, 09:15 UTC25m
2026-07-02 SJY598 - Jul 2, 15:35 UTCJul 2, 15:45 UTC10m
2026-07-02 SJY599 UPG → CGK Jul 2, 11:20 UTCJul 2, 11:30 UTC10m
2026-07-01 SJY598 - Jul 1, 15:25 UTCJul 1, 15:45 UTC20m
2026-07-01 SJY599 UPG → CGK Jul 1, 10:35 UTCJul 1, 11:05 UTC30m
2026-06-30 SJY598 - Jun 30, 15:15 UTCJul 1, 11:05 UTC19h 50m
2026-06-30 SJY185 - Jun 30, 11:25 UTCJun 30, 11:40 UTC15m
2026-06-30 SJY073 - Jun 30, 06:30 UTCJun 30, 06:45 UTC15m
2026-06-30 SJY055 - Jun 30, 02:35 UTCJun 30, 02:55 UTC20m
2026-06-28 SJY598 - Jun 28, 16:14 UTCJun 29, 09:00 UTC16h 45m
2026-06-28 SJY224 CGK → YIA Jun 28, 10:10 UTCJun 28, 12:55 UTC2h 45m
2026-06-28 SJY599 UPG → CGK Jun 28, 08:19 UTCJun 28, 08:50 UTC30m
2026-06-27 SJY580 - Jun 27, 11:25 UTCJun 28, 08:50 UTC21h 25m
2026-06-27 SJY185 - Jun 27, 10:00 UTCJun 27, 10:14 UTC15m
2026-06-27 SJY184 - Jun 27, 06:54 UTCJun 27, 07:04 UTC10m
2026-06-27 SJY073 - Jun 27, 05:29 UTCJun 27, 05:44 UTC15m
2026-06-27 SJY055 - Jun 27, 01:35 UTCJun 27, 01:54 UTC20m
2026-06-26 SJY185 - Jun 26, 10:10 UTCJun 26, 10:25 UTC15m
2026-06-26 SJY073 - Jun 26, 05:35 UTCJun 26, 05:55 UTC20m
2026-06-25 SJY185 - Jun 25, 10:04 UTCJun 25, 10:20 UTC15m

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

Mode-S 8A0A11 frequently asked

What is Mode-S code 8A0A11?
8A0A11 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-BBF.
Where is Mode-S 8A0A11 registered?
Mode-S code 8A0A11 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0A11 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0A11, octal 42405021, decimal 9,046,545.
What flights does 8A0A11 operate?
Mode-S 8A0A11 has broadcast 18 distinct callsigns, including SJY599, SJY598, SJY185, SJY073, SJY055.