Apparatus

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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 Jul 26, 12:55 UTC
Flights observed
807
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 12:55 UTC

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
UIA8962 - 12 2026-07-16
UIA8992 - 11 2026-07-01
UIA8991 - 11 2026-07-01
UIA8986 - 10 2026-07-01
UIA8925 - 10 2026-07-16
UIA8675 Uni Air 10 2026-07-01
UIA8655 - 10 2026-07-18
UIA8985 - 9 2026-07-01
UIA8982 - 9 2026-07-01
UIA8981 - 9 2026-07-01
UIA8961 - 9 2026-07-16
UIA8956 - 9 2026-07-18
UIA8955 - 9 2026-07-18
UIA8920 Uni Air 9 2026-07-25
UIA8735 - 9 2026-07-18
UIA8731 - 9 2026-07-18
UIA8718 Uni Air 9 2026-07-26
UIA8716 - 9 2026-07-20
UIA8709 Uni Air 9 2026-07-25
UIA8702 - 9 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UIA8718 MZG → KHH Jul 26, 12:30 UTCJul 26, 12:55 UTC25m
2026-07-26 UIA8717 - Jul 26, 11:20 UTCJul 26, 11:50 UTC30m
2026-07-26 UIA8712 MZG → KHH Jul 26, 10:10 UTCJul 26, 10:30 UTC20m
2026-07-26 UIA8661 CYI → MZG Jul 26, 08:45 UTCJul 26, 09:05 UTC20m
2026-07-26 UIA8662 MZG → CYI Jul 26, 07:15 UTCJul 26, 07:35 UTC20m
2026-07-26 UIA8707 KHH → MZG Jul 26, 05:40 UTCJul 26, 06:15 UTC35m
2026-07-26 UIA8918 KNH → KHH Jul 26, 04:25 UTCJul 26, 04:45 UTC20m
2026-07-26 UIA8917 KHH → KNH Jul 26, 02:10 UTCJul 26, 02:35 UTC25m
2026-07-26 UIA9162 MZG → KHH Jul 26, 01:00 UTCJul 26, 01:20 UTC20m
2026-07-25 UIA9161 KHH → MZG Jul 25, 23:35 UTCJul 26, 00:10 UTC35m
2026-07-25 UIA8710 MZG → KHH Jul 25, 11:10 UTCJul 25, 11:35 UTC25m
2026-07-25 UIA8683 TNN → MZG Jul 25, 10:15 UTCJul 25, 10:35 UTC20m
2026-07-25 UIA8682 MZG → TNN Jul 25, 08:55 UTCJul 25, 09:15 UTC20m
2026-07-25 UIA8709 KHH → MZG Jul 25, 07:40 UTCJul 25, 08:05 UTC25m
2026-07-25 UIA8920 KNH → KHH Jul 25, 06:25 UTCJul 25, 06:50 UTC25m
2026-07-25 UIA8919 KHH → KNH Jul 25, 04:35 UTCJul 25, 05:00 UTC25m
2026-07-25 UIA8912 KNH → KHH Jul 25, 03:10 UTCJul 25, 03:35 UTC25m
2026-07-25 UIA8911 KHH → KNH Jul 25, 00:45 UTCJul 25, 01:10 UTC25m
2026-07-24 UIA9178 MZG → KHH Jul 24, 14:40 UTCJul 24, 15:15 UTC35m
2026-07-24 UIA9177 KHH → MZG Jul 24, 13:40 UTCJul 24, 14:05 UTC25m
2026-07-24 UIA8928 KNH → KHH Jul 24, 12:20 UTCJul 24, 12:50 UTC30m
2026-07-24 UIA8829 - Jul 24, 09:40 UTCJul 24, 10:20 UTC40m
2026-07-24 UIA8772 LZN → TSA Jul 24, 08:25 UTCJul 24, 08:40 UTC15m
2026-07-24 UIA8771 TSA → LZN Jul 24, 06:40 UTCJul 24, 07:10 UTC30m
2026-07-24 UIA8612 - Jul 24, 04:50 UTCJul 24, 05:35 UTC45m
2026-07-24 UIA8611 TSA → MZG Jul 24, 03:15 UTCJul 24, 04:00 UTC45m
2026-07-24 UIA8606 MZG → TSA Jul 24, 01:40 UTCJul 24, 02:30 UTC50m
2026-07-24 UIA8605 TSA → MZG Jul 24, 00:05 UTCJul 24, 00:50 UTC45m
2026-07-23 UIA8628 - Jul 23, 12:55 UTCJul 23, 13:30 UTC35m
2026-07-23 UIA8651 - Jul 23, 11:35 UTCJul 23, 12:00 UTC25m
2026-07-23 UIA8640 MZG → RMQ Jul 23, 10:20 UTCJul 23, 10:35 UTC15m
2026-07-23 UIA8661 CYI → MZG Jul 23, 08:45 UTCJul 23, 09:05 UTC20m
2026-07-23 UIA8662 MZG → CYI Jul 23, 07:15 UTCJul 23, 07:35 UTC20m
2026-07-23 UIA8707 KHH → MZG Jul 23, 05:55 UTCJul 23, 06:20 UTC25m
2026-07-23 UIA8918 KNH → KHH Jul 23, 04:20 UTCJul 23, 04:50 UTC30m
2026-07-23 UIA8917 KHH → KNH Jul 23, 02:10 UTCJul 23, 02:30 UTC20m
2026-07-23 UIA9162 MZG → KHH Jul 23, 01:00 UTCJul 23, 01:20 UTC20m
2026-07-22 UIA9161 KHH → MZG Jul 22, 23:40 UTCJul 23, 00:05 UTC25m
2026-07-22 UIA8710 MZG → KHH Jul 22, 11:25 UTCJul 22, 11:40 UTC15m
2026-07-22 UIA8919 KHH → KNH Jul 22, 04:35 UTCJul 22, 04:55 UTC20m
2026-07-22 UIA8912 KNH → KHH Jul 22, 03:05 UTCJul 22, 03:30 UTC25m
2026-07-22 UIA8911 KHH → KNH Jul 22, 00:45 UTCJul 22, 01:15 UTC30m
2026-07-21 UIA9178 - Jul 21, 11:10 UTCJul 21, 11:30 UTC20m
2026-07-21 UIA9157 - Jul 21, 10:00 UTCJul 21, 10:20 UTC20m
2026-07-21 UIA9158 - Jul 21, 08:20 UTCJul 21, 08:50 UTC30m
2026-07-21 UIA9177 - Jul 21, 07:05 UTCJul 21, 07:40 UTC35m
2026-07-21 UIA9056 - Jul 21, 05:00 UTCJul 21, 05:45 UTC45m
2026-07-21 UIA9055 - Jul 21, 02:45 UTCJul 21, 03:35 UTC50m
2026-07-21 UIA8692 MZG → KHH Jul 21, 01:30 UTCJul 21, 01:50 UTC20m
2026-07-21 UIA8691 KHH → MZG Jul 21, 00:05 UTCJul 21, 00:35 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 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 Jul 26, 12:55 UTC.
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 UIA8962, UIA8992, UIA8991, UIA8986, UIA8925.