Apparatus

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sensors Mode-S transponder

899143

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-17008 · ATR-72-600

Hex
899143
Octal
42310503
Decimal
9,015,619
Country
TW
Tail
B-17008
Type
AT76
No current signal · last broadcast 41m ago
Flights observed
374
Distinct callsigns
20
Country
TW
Last broadcast
41m ago

Last known position

Most recent position reported by Mode-S 899143.

Country allocation

The ICAO 24-bit address 899143 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
UIA8985 Uni Air 7 2026-05-18
UIA8982 Uni Air 7 2026-05-18
UIA8715 Uni Air 7 2026-05-27
UIA8991 Uni Air 6 2026-05-14
UIA8986 Uni Air 6 2026-05-14
UIA8716 Uni Air 6 2026-05-29
UIA8710 Uni Air 6 2026-05-24
UIA8707 Uni Air 6 2026-05-25
UIA8702 Uni Air 6 2026-05-27
UIA8701 Uni Air 6 2026-05-27
UIA8696 Uni Air 6 2026-05-27
UIA8690 Uni Air 6 2026-05-27
UIA8689 Uni Air 6 2026-05-26
UIA8683 Uni Air 6 2026-05-30
UIA8682 Uni Air 6 2026-05-30
UIA8681 Uni Air 6 2026-05-27
UIA8680 Uni Air 6 2026-05-27
UIA8662 Uni Air 6 2026-05-25
UIA8661 Uni Air 6 2026-05-25
UIA8992 Uni Air 5 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UIA8683 TNN → MZG May 30, 10:10 UTCMay 30, 10:30 UTC20m
2026-05-30 UIA8682 MZG → TNN May 30, 09:00 UTCMay 30, 09:20 UTC20m
2026-05-30 UIA8709 - May 30, 07:45 UTCMay 30, 08:10 UTC25m
2026-05-30 UIA8920 KNH → KHH May 30, 06:45 UTCMay 30, 07:00 UTC15m
2026-05-30 UIA8919 KHH → KNH May 30, 04:35 UTCMay 30, 04:55 UTC20m
2026-05-30 UIA8912 KNH → KHH May 30, 03:05 UTCMay 30, 03:30 UTC25m
2026-05-30 UIA8911 KHH → KNH May 30, 00:40 UTCMay 30, 01:10 UTC30m
2026-05-29 UIA8716 MZG → KHH May 29, 12:00 UTCMay 29, 12:25 UTC25m
2026-05-29 UIA8655 RMQ → MZG May 29, 10:30 UTCMay 29, 10:50 UTC20m
2026-05-29 UIA8736 - May 29, 08:50 UTCMay 29, 09:15 UTC25m
2026-05-29 UIA8735 - May 29, 07:10 UTCMay 29, 07:25 UTC15m
2026-05-29 UIA8732 LZN → RMQ May 29, 05:30 UTCMay 29, 05:55 UTC25m
2026-05-29 UIA8731 RMQ → LZN May 29, 03:35 UTCMay 29, 03:55 UTC20m
2026-05-29 UIA8956 KNH → RMQ May 29, 02:20 UTCMay 29, 02:35 UTC15m
2026-05-29 UIA8955 RMQ → KNH May 29, 00:05 UTCMay 29, 00:30 UTC25m
2026-05-28 UIA8962 KNH → RMQ May 28, 11:35 UTCMay 28, 11:50 UTC15m
2026-05-28 UIA8925 KHH → KNH May 28, 09:35 UTCMay 28, 09:55 UTC20m
2026-05-28 UIA8926 KNH → KHH May 28, 08:15 UTCMay 28, 08:40 UTC25m
2026-05-28 UIA8961 RMQ → KNH May 28, 06:05 UTCMay 28, 06:30 UTC25m
2026-05-28 UIA8638 MZG → RMQ May 28, 04:45 UTCMay 28, 05:15 UTC30m
2026-05-28 UIA8637 RMQ → MZG May 28, 03:35 UTCMay 28, 04:00 UTC25m
2026-05-28 UIA8952 KNH → RMQ May 28, 02:15 UTCMay 28, 02:40 UTC25m
2026-05-28 UIA8951 RMQ → KNH May 28, 00:20 UTCMay 28, 00:45 UTC25m
2026-05-27 UIA8656 MZG → RMQ May 27, 12:10 UTCMay 27, 12:30 UTC20m
2026-05-27 UIA8715 KHH → MZG May 27, 10:15 UTCMay 27, 10:45 UTC30m
2026-05-27 UIA8702 MZG → KHH May 27, 08:35 UTCMay 27, 09:15 UTC40m
2026-05-27 UIA8681 TNN → MZG May 27, 07:10 UTCMay 27, 07:40 UTC30m
2026-05-27 UIA8680 MZG → TNN May 27, 05:55 UTCMay 27, 06:15 UTC20m
2026-05-27 UIA8701 KHH → MZG May 27, 04:39 UTCMay 27, 05:04 UTC25m
2026-05-27 UIA8696 MZG → KHH May 27, 03:14 UTCMay 27, 03:39 UTC25m
2026-05-27 UIA8690 MZG → KHH May 27, 00:34 UTCMay 27, 00:44 UTC10m
2026-05-26 UIA8689 KHH → MZG May 26, 23:14 UTCMay 26, 23:39 UTC25m
2026-05-26 UIA8928 KNH → KHH May 26, 12:05 UTCMay 26, 12:20 UTC15m
2026-05-26 UIA8927 KHH → KNH May 26, 09:55 UTCMay 26, 10:20 UTC25m
2026-05-26 UIA9178 MZG → KHH May 26, 07:55 UTCMay 26, 08:24 UTC30m
2026-05-26 UIA9177 KHH → MZG May 26, 06:39 UTCMay 26, 07:05 UTC25m
2026-05-26 UIA9052 - May 26, 05:00 UTCMay 26, 05:54 UTC55m
2026-05-26 UIA9051 - May 26, 02:44 UTCMay 26, 03:40 UTC55m
2026-05-26 UIA8692 MZG → KHH May 26, 01:20 UTCMay 26, 01:55 UTC35m
2026-05-26 UIA8691 KHH → MZG May 26, 00:00 UTCMay 26, 00:29 UTC30m
2026-05-25 UIA8716 MZG → KHH May 25, 13:40 UTCMay 25, 14:00 UTC20m
2026-05-25 UIA8715 KHH → MZG May 25, 12:15 UTCMay 25, 12:50 UTC35m
2026-05-25 UIA8712 MZG → KHH May 25, 11:00 UTCMay 25, 11:20 UTC20m
2026-05-25 UIA8661 CYI → MZG May 25, 09:45 UTCMay 25, 10:05 UTC20m
2026-05-25 UIA8662 MZG → CYI May 25, 08:45 UTCMay 25, 09:00 UTC15m
2026-05-25 UIA8707 KHH → MZG May 25, 07:30 UTCMay 25, 08:00 UTC30m
2026-05-25 UIA8918 KNH → KHH May 25, 06:20 UTCMay 25, 06:40 UTC20m
2026-05-25 UIA8917 KHH → KNH May 25, 04:15 UTCMay 25, 04:40 UTC25m
2026-05-25 UIA9162 MZG → KHH May 25, 03:00 UTCMay 25, 03:25 UTC25m
2026-05-24 UIA8689 KHH → MZG May 24, 23:15 UTCMay 24, 23:46 UTC31m

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-17008 page for operator, model, and routing details .

Mode-S 899143 frequently asked

What is Mode-S code 899143?
899143 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-17008.
Where is Mode-S 899143 registered?
Mode-S code 899143 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899143 broadcasting right now?
No active broadcast right now. Last signal was 41m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899143, octal 42310503, decimal 9,015,619.
What flights does 899143 operate?
Mode-S 899143 has broadcast 20 distinct callsigns, including UIA8985, UIA8982, UIA8715, UIA8991, UIA8986.