Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

899144

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-17009 · ATR-72-600

Hex
899144
Octal
42310504
Decimal
9,015,620
Country
TW
Tail
B-17009
Type
AT76
No current signal · last broadcast 8h ago
Flights observed
363
Distinct callsigns
20
Country
TW
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 899144.

Country allocation

The ICAO 24-bit address 899144 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
UIA8726 Uni Air 11 2026-05-22
UIA8725 Uni Air 11 2026-05-22
UIA8727 Uni Air 9 2026-05-22
UIA8722 Uni Air 9 2026-05-30
UIA8721 Uni Air 9 2026-05-30
UIA8782 Uni Air 8 2026-05-30
UIA8728 Uni Air 8 2026-05-22
UIA8781 Uni Air 7 2026-05-29
UIA8992 Uni Air 6 2026-05-26
UIA8991 Uni Air 6 2026-05-26
UIA8986 Uni Air 6 2026-05-26
UIA8790 Uni Air 6 2026-05-29
UIA8789 Uni Air 6 2026-05-29
UIA8759 Uni Air 6 2026-05-29
UIA8755 Uni Air 6 2026-05-29
UIA8752 Uni Air 6 2026-05-29
UIA8751 Uni Air 6 2026-05-28
UIA8985 Uni Air 5 2026-05-26
UIA8982 Uni Air 5 2026-05-26
UIA8981 Uni Air 5 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UIA8620 MZG → TSA May 30, 11:55 UTCMay 30, 12:35 UTC40m
2026-05-30 UIA8619 TSA → MZG May 30, 10:25 UTCMay 30, 11:10 UTC45m
2026-05-30 UIA8626 MZG → TSA May 30, 08:45 UTCMay 30, 09:20 UTC35m
2026-05-30 UIA8625 TSA → MZG May 30, 07:10 UTCMay 30, 07:55 UTC45m
2026-05-30 UIA8722 TTT → TSA May 30, 04:20 UTCMay 30, 04:35 UTC15m
2026-05-30 UIA8721 TSA → TTT May 30, 02:00 UTCMay 30, 02:15 UTC15m
2026-05-30 UIA8782 MFK → TSA May 30, 00:35 UTCMay 30, 01:00 UTC25m
2026-05-29 UIA8781 TSA → MFK May 29, 22:55 UTCMay 29, 23:10 UTC15m
2026-05-29 UIA8730 TTT → TSA May 29, 13:05 UTCMay 29, 13:15 UTC10m
2026-05-29 UIA8729 TSA → TTT May 29, 11:00 UTCMay 29, 11:15 UTC15m
2026-05-29 UIA8790 MFK → TSA May 29, 09:15 UTCMay 29, 09:35 UTC20m
2026-05-29 UIA8789 TSA → MFK May 29, 07:40 UTCMay 29, 07:55 UTC15m
2026-05-29 UIA8760 LZN → TSA May 29, 06:20 UTCMay 29, 06:35 UTC15m
2026-05-29 UIA8759 TSA → LZN May 29, 04:40 UTCMay 29, 05:00 UTC20m
2026-05-29 UIA8756 LZN → TSA May 29, 03:40 UTCMay 29, 03:50 UTC10m
2026-05-29 UIA8755 TSA → LZN May 29, 01:50 UTCMay 29, 02:20 UTC30m
2026-05-29 UIA8752 LZN → TSA May 29, 00:35 UTCMay 29, 00:45 UTC10m
2026-05-28 UIA8751 TSA → LZN May 28, 22:50 UTCMay 28, 23:10 UTC20m
2026-05-28 UIA8620 MZG → TSA May 28, 12:00 UTCMay 28, 12:40 UTC40m
2026-05-28 UIA8619 TSA → MZG May 28, 10:25 UTCMay 28, 11:05 UTC40m
2026-05-28 UIA8626 MZG → TSA May 28, 08:45 UTCMay 28, 09:30 UTC45m
2026-05-28 UIA8625 TSA → MZG May 28, 07:20 UTCMay 28, 07:55 UTC35m
2026-05-28 UIA8616 MZG → TSA May 28, 05:30 UTCMay 28, 06:15 UTC45m
2026-05-28 UIA8615 TSA → MZG May 28, 04:05 UTCMay 28, 04:50 UTC45m
2026-05-28 UIA8608 MZG → TSA May 28, 02:10 UTCMay 28, 03:10 UTC1h 0m
2026-05-28 UIA8607 TSA → MZG May 28, 00:45 UTCMay 28, 01:25 UTC40m
2026-05-27 UIA8978 HUN → TSA May 27, 12:40 UTCMay 27, 12:50 UTC10m
2026-05-27 UIA8977 TSA → HUN May 27, 11:15 UTCMay 27, 11:30 UTC15m
2026-05-27 UIA8776 LZN → TSA May 27, 10:15 UTCMay 27, 10:30 UTC15m
2026-05-27 UIA8775 TSA → LZN May 27, 08:35 UTCMay 27, 08:55 UTC20m
2026-05-27 UIA8816 KNH → TSA May 27, 07:00 UTCMay 27, 07:40 UTC40m
2026-05-27 UIA8901 CYI → KNH May 27, 04:55 UTCMay 27, 05:19 UTC25m
2026-05-27 UIA8902 KNH → CYI May 27, 03:39 UTCMay 27, 03:54 UTC15m
2026-05-27 UIA8981 TNN → KNH May 27, 01:54 UTCMay 27, 02:14 UTC20m
2026-05-27 UIA8676 MZG → TNN May 27, 00:49 UTCMay 27, 01:05 UTC15m
2026-05-26 UIA8992 KNH → TNN May 26, 10:05 UTCMay 26, 10:20 UTC15m
2026-05-26 UIA8991 TNN → KNH May 26, 08:15 UTCMay 26, 08:39 UTC25m
2026-05-26 UIA8986 KNH → TNN May 26, 06:59 UTCMay 26, 07:19 UTC20m
2026-05-26 UIA8985 TNN → KNH May 26, 05:05 UTCMay 26, 05:25 UTC20m
2026-05-26 UIA8982 KNH → TNN May 26, 03:55 UTCMay 26, 04:10 UTC15m
2026-05-26 UIA8981 TNN → KNH May 26, 02:00 UTCMay 26, 02:19 UTC20m
2026-05-26 UIA8676 MZG → TNN May 26, 00:35 UTCMay 26, 01:00 UTC25m
2026-05-25 UIA8675 TNN → MZG May 25, 23:30 UTCMay 25, 23:49 UTC20m
2026-05-25 UIA8992 KNH → TNN May 25, 10:15 UTCMay 25, 10:30 UTC15m
2026-05-25 UIA8991 TNN → KNH May 25, 08:10 UTCMay 25, 08:30 UTC20m
2026-05-25 UIA8986 KNH → TNN May 25, 07:05 UTCMay 25, 07:25 UTC20m
2026-05-25 UIA8985 TNN → KNH May 25, 05:10 UTCMay 25, 05:30 UTC20m
2026-05-25 UIA8982 KNH → TNN May 25, 03:55 UTCMay 25, 04:10 UTC15m
2026-05-25 UIA8981 TNN → KNH May 25, 02:05 UTCMay 25, 02:35 UTC30m
2026-05-24 UIA8675 TNN → MZG May 24, 23:30 UTCMay 24, 23:46 UTC16m

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-17009 page for operator, model, and routing details .

Mode-S 899144 frequently asked

What is Mode-S code 899144?
899144 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-17009.
Where is Mode-S 899144 registered?
Mode-S code 899144 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899144 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899144, octal 42310504, decimal 9,015,620.
What flights does 899144 operate?
Mode-S 899144 has broadcast 20 distinct callsigns, including UIA8726, UIA8725, UIA8727, UIA8722, UIA8721.