Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

899138

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-17012 · ATR-72-600

Hex
899138
Octal
42310470
Decimal
9,015,608
Country
TW
Tail
B-17012
Type
AT76
No current signal · last broadcast 6h ago
Flights observed
371
Distinct callsigns
20
Country
TW
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 899138.

Country allocation

The ICAO 24-bit address 899138 falls within the block assigned to Taiwan (TW) by ICAO Annex 10, Volume III. Every aircraft registered in Taiwan 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
UIA8718 - 8 2026-05-29
UIA8962 Uni Air 7 2026-05-30
UIA8767 - 7 2026-05-28
UIA8961 Uni Air 6 2026-05-30
UIA8918 Uni Air 6 2026-05-21
UIA8786 - 6 2026-05-28
UIA8785 - 6 2026-05-28
UIA8768 - 6 2026-05-28
UIA8757 - 6 2026-05-28
UIA8717 - 6 2026-05-17
UIA8716 Uni Air 6 2026-05-20
UIA8712 Uni Air 6 2026-05-17
UIA8691 Uni Air 6 2026-05-30
UIA8638 Uni Air 6 2026-05-30
UIA9162 Uni Air 5 2026-05-21
UIA9161 Uni Air 5 2026-05-20
UIA9092 Uni Air 5 2026-05-28
UIA8926 Uni Air 5 2026-05-30
UIA8925 Uni Air 5 2026-05-30
UIA8917 Uni Air 5 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UIA8962 KNH → RMQ May 30, 10:45 UTCMay 30, 11:00 UTC15m
2026-05-30 UIA8925 KHH → KNH May 30, 08:45 UTCMay 30, 09:05 UTC20m
2026-05-30 UIA8926 KNH → KHH May 30, 07:25 UTCMay 30, 07:50 UTC25m
2026-05-30 UIA8961 RMQ → KNH May 30, 05:30 UTCMay 30, 05:45 UTC15m
2026-05-30 UIA8638 MZG → RMQ May 30, 04:10 UTCMay 30, 04:30 UTC20m
2026-05-30 UIA8697 KHH → MZG May 30, 02:35 UTCMay 30, 03:00 UTC25m
2026-05-30 UIA8691 KHH → MZG May 30, 01:20 UTCMay 30, 01:45 UTC25m
2026-05-30 UIA8691 KHH → MZG May 30, 00:00 UTCMay 30, 00:20 UTC20m
2026-05-29 UIA8718 - May 29, 12:40 UTCMay 29, 13:05 UTC25m
2026-05-29 UIA8619 TSA → MZG May 29, 10:30 UTCMay 29, 11:15 UTC45m
2026-05-29 UIA8626 MZG → TSA May 29, 08:45 UTCMay 29, 09:25 UTC40m
2026-05-29 UIA8625 TSA → MZG May 29, 07:20 UTCMay 29, 08:10 UTC50m
2026-05-29 UIA8616 MZG → TSA May 29, 05:55 UTCMay 29, 06:35 UTC40m
2026-05-29 UIA8615 TSA → MZG May 29, 04:15 UTCMay 29, 05:00 UTC45m
2026-05-29 UIA8608 MZG → TSA May 29, 02:50 UTCMay 29, 03:30 UTC40m
2026-05-29 UIA8607 TSA → MZG May 29, 01:10 UTCMay 29, 01:55 UTC45m
2026-05-28 UIA8768 - May 28, 11:50 UTCMay 28, 12:10 UTC20m
2026-05-28 UIA8767 - May 28, 10:05 UTCMay 28, 10:25 UTC20m
2026-05-28 UIA8786 - May 28, 08:05 UTCMay 28, 08:25 UTC20m
2026-05-28 UIA8785 - May 28, 06:10 UTCMay 28, 06:35 UTC25m
2026-05-28 UIA8758 - May 28, 04:25 UTCMay 28, 04:50 UTC25m
2026-05-28 UIA8757 - May 28, 02:35 UTCMay 28, 02:45 UTC10m
2026-05-28 UIA9092 LZN → TSA May 28, 01:25 UTCMay 28, 01:40 UTC15m
2026-05-27 UIA9091 TSA → LZN May 27, 23:40 UTCMay 27, 23:50 UTC10m
2026-05-27 UIA8767 - May 27, 10:30 UTCMay 27, 10:45 UTC15m
2026-05-27 UIA8767 - May 27, 09:25 UTCMay 27, 09:50 UTC25m
2026-05-27 UIA8786 - May 27, 08:00 UTCMay 27, 08:20 UTC20m
2026-05-27 UIA8785 - May 27, 06:04 UTCMay 27, 06:34 UTC30m
2026-05-26 UIA8728 TTT → TSA May 26, 11:44 UTCMay 26, 12:05 UTC20m
2026-05-26 UIA8727 TSA → TTT May 26, 09:35 UTCMay 26, 09:49 UTC15m
2026-05-26 UIA8726 TTT → TSA May 26, 08:24 UTCMay 26, 08:39 UTC15m
2026-05-26 UIA8725 TSA → TTT May 26, 06:14 UTCMay 26, 06:29 UTC15m
2026-05-26 UIA8722 TTT → TSA May 26, 04:50 UTCMay 26, 05:05 UTC15m
2026-05-26 UIA8721 TSA → TTT May 26, 02:19 UTCMay 26, 02:35 UTC15m
2026-05-25 UIA8768 - May 25, 11:55 UTCMay 25, 12:10 UTC15m
2026-05-25 UIA8757 - May 25, 03:20 UTCMay 25, 03:40 UTC20m
2026-05-25 UIA9092 LZN → TSA May 25, 01:55 UTCMay 25, 02:30 UTC35m
2026-05-24 UIA8768 - May 24, 11:10 UTCMay 24, 11:40 UTC30m
2026-05-24 UIA8767 - May 24, 09:20 UTCMay 24, 09:40 UTC20m
2026-05-24 UIA8786 - May 24, 07:45 UTCMay 24, 08:05 UTC20m
2026-05-24 UIA8785 - May 24, 06:05 UTCMay 24, 06:15 UTC10m
2026-05-23 UIA8768 - May 23, 11:00 UTCMay 23, 11:15 UTC15m
2026-05-23 UIA8767 - May 23, 09:15 UTCMay 23, 09:45 UTC30m
2026-05-23 UIA8786 - May 23, 07:45 UTCMay 23, 08:05 UTC20m
2026-05-23 UIA8785 - May 23, 06:05 UTCMay 23, 06:25 UTC20m
2026-05-23 UIA8758 - May 23, 04:55 UTCMay 23, 05:10 UTC15m
2026-05-23 UIA8757 - May 23, 03:15 UTCMay 23, 03:30 UTC15m
2026-05-22 UIA8978 HUN → TSA May 22, 12:35 UTCMay 22, 12:45 UTC10m
2026-05-22 UIA8977 TSA → HUN May 22, 11:05 UTCMay 22, 11:20 UTC15m
2026-05-22 UIA8816 KNH → TSA May 22, 08:20 UTCMay 22, 08:55 UTC35m

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 B-17012 page for operator, model, and routing details .

Mode-S 899138 frequently asked

What is Mode-S code 899138?
899138 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-17012.
Where is Mode-S 899138 registered?
Mode-S code 899138 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899138 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899138, octal 42310470, decimal 9,015,608.
What flights does 899138 operate?
Mode-S 899138 has broadcast 20 distinct callsigns, including UIA8718, UIA8962, UIA8767, UIA8961, UIA8918.