Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

899142

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-17007 · ATR-72-600

Hex
899142
Octal
42310502
Decimal
9,015,618
Country
TW
Tail
B-17007
Type
AT76
Transponder active on ground
Flights observed
360
Distinct callsigns
20
Country
TW
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 899142.

Country allocation

The ICAO 24-bit address 899142 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
UIA8830 - 7 2026-05-28
UIA8829 - 7 2026-05-28
UIA8612 - 7 2026-05-28
UIA8918 Uni Air 6 2026-05-02
UIA8789 Uni Air 6 2026-05-24
UIA8760 Uni Air 6 2026-05-24
UIA8759 Uni Air 6 2026-05-24
UIA8752 Uni Air 6 2026-05-30
UIA8751 Uni Air 6 2026-05-29
UIA8716 Uni Air 6 2026-05-12
UIA8655 Uni Air 6 2026-05-26
UIA8621 Uni Air 6 2026-05-28
UIA9166 Uni Air 5 2026-05-28
UIA9165 Uni Air 5 2026-05-28
UIA8958 Uni Air 5 2026-05-25
UIA8957 Uni Air 5 2026-05-25
UIA8917 Uni Air 5 2026-05-02
UIA8790 Uni Air 5 2026-05-24
UIA8755 Uni Air 5 2026-05-30
UIA8636 Uni Air 5 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UIA8755 TSA → LZN May 30, 01:40 UTCMay 30, 01:55 UTC15m
2026-05-30 UIA8752 LZN → TSA May 30, 00:15 UTCMay 30, 00:45 UTC30m
2026-05-29 UIA8751 TSA → LZN May 29, 22:45 UTCMay 29, 23:00 UTC15m
2026-05-29 UIA8768 - May 29, 11:05 UTCMay 29, 11:15 UTC10m
2026-05-29 UIA8767 - May 29, 09:05 UTCMay 29, 09:25 UTC20m
2026-05-29 UIA8786 - May 29, 07:45 UTCMay 29, 08:05 UTC20m
2026-05-29 UIA8785 - May 29, 06:00 UTCMay 29, 06:20 UTC20m
2026-05-29 UIA8757 - May 29, 02:35 UTCMay 29, 02:50 UTC15m
2026-05-28 UIA9091 TSA → LZN May 28, 23:40 UTCMay 29, 00:00 UTC20m
2026-05-28 UIA8830 - May 28, 12:15 UTCMay 28, 12:50 UTC35m
2026-05-28 UIA8829 - May 28, 10:10 UTCMay 28, 10:55 UTC45m
2026-05-28 UIA8622 MZG → TSA May 28, 08:20 UTCMay 28, 09:10 UTC50m
2026-05-28 UIA8621 TSA → MZG May 28, 07:00 UTCMay 28, 07:40 UTC40m
2026-05-28 UIA8612 MZG → TSA May 28, 05:10 UTCMay 28, 06:10 UTC1h 0m
2026-05-28 UIA9165 KHH → MZG May 28, 03:55 UTCMay 28, 04:25 UTC30m
2026-05-28 UIA9166 MZG → KHH May 28, 02:00 UTCMay 28, 02:35 UTC35m
2026-05-28 UIA8635 RMQ → MZG May 28, 00:40 UTCMay 28, 01:00 UTC20m
2026-05-27 UIA8962 KNH → RMQ May 27, 10:45 UTCMay 27, 11:05 UTC20m
2026-05-27 UIA8925 KHH → KNH May 27, 08:50 UTCMay 27, 09:25 UTC35m
2026-05-27 UIA8926 KNH → KHH May 27, 07:25 UTCMay 27, 07:50 UTC25m
2026-05-27 UIA8961 RMQ → KNH May 27, 05:24 UTCMay 27, 05:55 UTC30m
2026-05-27 UIA8638 MZG → RMQ May 27, 04:09 UTCMay 27, 04:30 UTC20m
2026-05-27 UIA8637 RMQ → MZG May 27, 02:54 UTCMay 27, 03:20 UTC25m
2026-05-27 UIA8952 KNH → RMQ May 27, 01:19 UTCMay 27, 01:34 UTC15m
2026-05-26 UIA8951 RMQ → KNH May 26, 23:19 UTCMay 26, 23:45 UTC25m
2026-05-26 UIA8656 MZG → RMQ May 26, 12:00 UTCMay 26, 12:30 UTC30m
2026-05-26 UIA8655 RMQ → MZG May 26, 10:25 UTCMay 26, 10:50 UTC25m
2026-05-26 UIA8736 - May 26, 08:50 UTCMay 26, 09:19 UTC30m
2026-05-26 UIA8735 - May 26, 07:10 UTCMay 26, 07:40 UTC30m
2026-05-26 UIA8732 LZN → RMQ May 26, 05:34 UTCMay 26, 06:14 UTC40m
2026-05-26 UIA8731 RMQ → LZN May 26, 03:45 UTCMay 26, 04:10 UTC25m
2026-05-26 UIA8956 KNH → RMQ May 26, 02:19 UTCMay 26, 02:39 UTC20m
2026-05-26 UIA8955 RMQ → KNH May 26, 00:04 UTCMay 26, 00:29 UTC25m
2026-05-25 UIA8965 RMQ → KNH May 25, 09:40 UTCMay 25, 10:05 UTC25m
2026-05-25 UIA8640 MZG → RMQ May 25, 08:20 UTCMay 25, 08:40 UTC20m
2026-05-25 UIA8639 RMQ → MZG May 25, 07:15 UTCMay 25, 07:40 UTC25m
2026-05-25 UIA8958 KNH → RMQ May 25, 05:55 UTCMay 25, 06:15 UTC20m
2026-05-25 UIA8957 RMQ → KNH May 25, 03:50 UTCMay 25, 04:20 UTC30m
2026-05-25 UIA8636 MZG → RMQ May 25, 02:10 UTCMay 25, 02:35 UTC25m
2026-05-24 UIA9208 KNH → TSA May 24, 12:55 UTCMay 24, 13:30 UTC35m
2026-05-24 UIA9207 TSA → KNH May 24, 11:00 UTCMay 24, 11:45 UTC45m
2026-05-24 UIA8790 MFK → TSA May 24, 09:30 UTCMay 24, 09:45 UTC15m
2026-05-24 UIA8789 TSA → MFK May 24, 07:45 UTCMay 24, 08:05 UTC20m
2026-05-24 UIA8760 LZN → TSA May 24, 06:35 UTCMay 24, 06:50 UTC15m
2026-05-24 UIA8759 TSA → LZN May 24, 04:55 UTCMay 24, 05:15 UTC20m
2026-05-23 UIA8628 - May 23, 12:40 UTCMay 23, 13:30 UTC50m
2026-05-23 UIA8627 - May 23, 11:15 UTCMay 23, 12:00 UTC45m
2026-05-23 UIA8776 LZN → TSA May 23, 10:05 UTCMay 23, 10:25 UTC20m
2026-05-23 UIA8775 TSA → LZN May 23, 08:25 UTCMay 23, 08:45 UTC20m
2026-05-23 UIA8816 KNH → TSA May 23, 07:00 UTCMay 23, 07:35 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-17007 page for operator, model, and routing details .

Mode-S 899142 frequently asked

What is Mode-S code 899142?
899142 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-17007.
Where is Mode-S 899142 registered?
Mode-S code 899142 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899142 broadcasting right now?
Mode-S 899142 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899142, octal 42310502, decimal 9,015,618.
What flights does 899142 operate?
Mode-S 899142 has broadcast 20 distinct callsigns, including UIA8830, UIA8829, UIA8612, UIA8918, UIA8789.