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
Broadcasting now · callsign UIA8725 · 9,100 ft
Flights observed
809
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 13:50 UTC

Current position

899142 is currently broadcasting. Map zoomed to live position.

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
UIA8981 Uni Air 14 2026-07-22
UIA8676 Uni Air 14 2026-07-22
UIA8985 Uni Air 13 2026-07-22
UIA8982 Uni Air 13 2026-07-22
UIA8830 - 13 2026-07-24
UIA8675 Uni Air 13 2026-07-22
UIA8991 Uni Air 12 2026-07-21
UIA8986 Uni Air 12 2026-07-21
UIA8612 - 12 2026-07-02
UIA8829 - 11 2026-07-02
UIA8605 - 11 2026-07-17
UIA8992 Uni Air 10 2026-07-21
UIA8927 Uni Air 10 2026-07-24
UIA8918 - 10 2026-07-20
UIA8621 - 10 2026-07-05
UIA9166 - 9 2026-06-30
UIA9165 Uni Air 9 2026-06-30
UIA8928 Uni Air 9 2026-07-23
UIA8917 - 9 2026-07-20
UIA8789 - 9 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UIA8620 MZG → TSA Jul 26, 13:10 UTCJul 26, 13:50 UTC40m
2026-07-26 UIA8627 - Jul 26, 11:45 UTCJul 26, 12:25 UTC40m
2026-07-26 UIA8626 MZG → TSA Jul 26, 10:00 UTCJul 26, 10:45 UTC45m
2026-07-26 UIA8625 TSA → MZG Jul 26, 08:35 UTCJul 26, 09:15 UTC40m
2026-07-26 UIA8816 KNH → TSA Jul 26, 06:55 UTCJul 26, 07:25 UTC30m
2026-07-26 UIA8901 CYI → KNH Jul 26, 05:00 UTCJul 26, 05:20 UTC20m
2026-07-26 UIA8902 KNH → CYI Jul 26, 03:45 UTCJul 26, 04:10 UTC25m
2026-07-26 UIA8809 TSA → KNH Jul 26, 01:35 UTCJul 26, 02:20 UTC45m
2026-07-25 UIA9208 KNH → TSA Jul 25, 13:15 UTCJul 25, 13:50 UTC35m
2026-07-25 UIA9207 TSA → KNH Jul 25, 11:05 UTCJul 25, 11:50 UTC45m
2026-07-25 UIA8776 LZN → TSA Jul 25, 09:55 UTCJul 25, 10:20 UTC25m
2026-07-25 UIA8775 TSA → LZN Jul 25, 08:15 UTCJul 25, 08:35 UTC20m
2026-07-25 UIA8816 KNH → TSA Jul 25, 06:40 UTCJul 25, 07:20 UTC40m
2026-07-25 UIA8901 CYI → KNH Jul 25, 04:55 UTCJul 25, 05:20 UTC25m
2026-07-25 UIA8902 KNH → CYI Jul 25, 03:40 UTCJul 25, 04:05 UTC25m
2026-07-25 UIA8809 TSA → KNH Jul 25, 01:20 UTCJul 25, 02:10 UTC50m
2026-07-24 UIA8830 - Jul 24, 12:30 UTCJul 24, 13:10 UTC40m
2026-07-24 UIA8927 KHH → KNH Jul 24, 10:20 UTCJul 24, 10:50 UTC30m
2026-07-24 UIA8702 MZG → KHH Jul 24, 09:10 UTCJul 24, 09:30 UTC20m
2026-07-24 UIA8681 TNN → MZG Jul 24, 08:10 UTCJul 24, 08:25 UTC15m
2026-07-24 UIA8680 MZG → TNN Jul 24, 05:55 UTCJul 24, 06:15 UTC20m
2026-07-24 UIA8701 KHH → MZG Jul 24, 04:40 UTCJul 24, 05:05 UTC25m
2026-07-24 UIA8696 MZG → KHH Jul 24, 03:10 UTCJul 24, 03:40 UTC30m
2026-07-24 UIA8695 KHH → MZG Jul 24, 01:50 UTCJul 24, 02:15 UTC25m
2026-07-24 UIA8690 MZG → KHH Jul 24, 00:30 UTCJul 24, 01:00 UTC30m
2026-07-23 UIA8689 KHH → MZG Jul 23, 23:10 UTCJul 23, 23:35 UTC25m
2026-07-23 UIA8928 KNH → KHH Jul 23, 12:00 UTCJul 23, 12:20 UTC20m
2026-07-23 UIA8927 KHH → KNH Jul 23, 10:10 UTCJul 23, 10:45 UTC35m
2026-07-23 UIA8702 MZG → KHH Jul 23, 08:35 UTCJul 23, 09:15 UTC40m
2026-07-23 UIA8681 TNN → MZG Jul 23, 07:25 UTCJul 23, 07:45 UTC20m
2026-07-23 UIA8680 MZG → TNN Jul 23, 06:00 UTCJul 23, 06:30 UTC30m
2026-07-23 UIA8701 KHH → MZG Jul 23, 04:40 UTCJul 23, 05:10 UTC30m
2026-07-23 UIA8696 MZG → KHH Jul 23, 03:10 UTCJul 23, 03:40 UTC30m
2026-07-23 UIA8695 KHH → MZG Jul 23, 01:55 UTCJul 23, 02:25 UTC30m
2026-07-23 UIA8690 MZG → KHH Jul 23, 00:35 UTCJul 23, 01:00 UTC25m
2026-07-22 UIA8675 TNN → MZG Jul 22, 23:30 UTCJul 22, 23:50 UTC20m
2026-07-22 UIA8985 TNN → KNH Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-22 UIA8982 KNH → TNN Jul 22, 04:00 UTCJul 22, 04:15 UTC15m
2026-07-22 UIA8981 TNN → KNH Jul 22, 02:00 UTCJul 22, 02:20 UTC20m
2026-07-22 UIA8676 MZG → TNN Jul 22, 00:40 UTCJul 22, 01:00 UTC20m
2026-07-21 UIA8675 - Jul 21, 23:30 UTCJul 21, 23:55 UTC25m
2026-07-21 UIA8992 KNH → TNN Jul 21, 10:05 UTCJul 21, 10:20 UTC15m
2026-07-21 UIA8991 TNN → KNH Jul 21, 08:20 UTCJul 21, 08:40 UTC20m
2026-07-21 UIA8986 KNH → TNN Jul 21, 07:05 UTCJul 21, 07:25 UTC20m
2026-07-21 UIA8985 TNN → KNH Jul 21, 05:10 UTCJul 21, 05:25 UTC15m
2026-07-21 UIA8982 KNH → TNN Jul 21, 03:55 UTCJul 21, 04:10 UTC15m
2026-07-21 UIA8981 TNN → KNH Jul 21, 01:45 UTCJul 21, 02:05 UTC20m
2026-07-21 UIA8676 MZG → TNN Jul 21, 00:40 UTCJul 21, 01:00 UTC20m
2026-07-20 UIA8689 - Jul 20, 23:15 UTCJul 20, 23:40 UTC25m
2026-07-20 UIA8718 - Jul 20, 12:35 UTCJul 20, 13:00 UTC25m

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?
Yes. Mode-S 899142 is currently airborne.
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 UIA8981, UIA8676, UIA8985, UIA8982, UIA8830.