Apparatus

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sensors Mode-S transponder

89906D

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-16221 · AIRBUS A-321

Hex
89906D
Octal
42310155
Decimal
9,015,405
Country
TW
Tail
B-16221
Type
A321
Transponder active on ground
Flights observed
354
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 89906D.

Country allocation

The ICAO 24-bit address 89906D 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
UIA8609 Uni Air 26 2026-05-30
UIA8812 Uni Air 19 2026-05-26
UIA8811 Uni Air 18 2026-05-26
UIA8835 Uni Air 17 2026-05-20
UIA8821 Uni Air 17 2026-05-20
UIA8801 Uni Air 17 2026-05-19
UIA8836 Uni Air 16 2026-05-20
UIA8822 Uni Air 16 2026-05-20
UIA8652 - 16 2026-05-29
UIA8651 Uni Air 16 2026-05-29
UIA8618 Uni Air 16 2026-05-29
UIA8610 Uni Air 16 2026-05-30
UIA8601 Uni Air 16 2026-05-29
UIA8802 Uni Air 15 2026-05-20
UIA8617 Uni Air 15 2026-05-29
UIA8602 Uni Air 15 2026-05-30
UIA9206 Uni Air 9 2026-04-30
UIA9205 Uni Air 9 2026-04-30
UIA8616 Uni Air 9 2026-04-30
UIA8608 Uni Air 8 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 UIA8610 MZG → TSA May 30, 04:30 UTCMay 30, 05:05 UTC35m
2026-05-30 UIA8609 TSA → MZG May 30, 02:50 UTCMay 30, 03:20 UTC30m
2026-05-30 UIA8602 MZG → TSA May 30, 01:05 UTCMay 30, 01:40 UTC35m
2026-05-29 UIA8601 TSA → MZG May 29, 23:35 UTCMay 30, 00:10 UTC35m
2026-05-29 UIA8618 MZG → TSA May 29, 10:50 UTCMay 29, 11:20 UTC30m
2026-05-29 UIA8651 RMQ → MZG May 29, 09:15 UTCMay 29, 09:40 UTC25m
2026-05-29 UIA8652 - May 29, 07:40 UTCMay 29, 07:55 UTC15m
2026-05-29 UIA8617 TSA → MZG May 29, 06:15 UTCMay 29, 06:55 UTC40m
2026-05-29 UIA8610 MZG → TSA May 29, 04:35 UTCMay 29, 05:05 UTC30m
2026-05-29 UIA8609 TSA → MZG May 29, 02:45 UTCMay 29, 03:20 UTC35m
2026-05-29 UIA8602 MZG → TSA May 29, 01:20 UTCMay 29, 01:50 UTC30m
2026-05-28 UIA8601 TSA → MZG May 28, 23:40 UTCMay 29, 00:20 UTC40m
2026-05-28 UIA8618 MZG → TSA May 28, 10:45 UTCMay 28, 11:20 UTC35m
2026-05-28 UIA8651 RMQ → MZG May 28, 09:35 UTCMay 28, 09:50 UTC15m
2026-05-28 UIA8652 - May 28, 07:45 UTCMay 28, 08:10 UTC25m
2026-05-28 UIA8617 TSA → MZG May 28, 06:25 UTCMay 28, 07:00 UTC35m
2026-05-28 UIA8610 MZG → TSA May 28, 04:20 UTCMay 28, 05:00 UTC40m
2026-05-28 UIA8609 TSA → MZG May 28, 02:50 UTCMay 28, 03:20 UTC30m
2026-05-28 UIA8602 MZG → TSA May 28, 01:15 UTCMay 28, 02:00 UTC45m
2026-05-27 UIA8601 TSA → MZG May 27, 23:35 UTCMay 28, 00:10 UTC35m
2026-05-27 UIA8618 MZG → TSA May 27, 10:50 UTCMay 27, 11:25 UTC35m
2026-05-27 UIA8651 RMQ → MZG May 27, 09:25 UTCMay 27, 09:50 UTC25m
2026-05-27 UIA8652 - May 27, 07:45 UTCMay 27, 08:05 UTC20m
2026-05-27 UIA8617 TSA → MZG May 27, 06:09 UTCMay 27, 06:44 UTC35m
2026-05-27 UIA8610 MZG → TSA May 27, 04:45 UTCMay 27, 05:14 UTC30m
2026-05-27 UIA8609 TSA → MZG May 27, 03:09 UTCMay 27, 03:39 UTC30m
2026-05-27 UIA8602 MZG → TSA May 27, 01:24 UTCMay 27, 02:04 UTC40m
2026-05-26 UIA8601 TSA → MZG May 26, 23:39 UTCMay 27, 00:14 UTC35m
2026-05-26 UIA8618 MZG → TSA May 26, 11:30 UTCMay 26, 12:10 UTC40m
2026-05-26 UIA8651 RMQ → MZG May 26, 10:14 UTCMay 26, 10:29 UTC15m
2026-05-26 UIA8652 - May 26, 08:54 UTCMay 26, 09:15 UTC20m
2026-05-26 UIA8617 TSA → MZG May 26, 07:10 UTCMay 26, 07:45 UTC35m
2026-05-26 UIA8812 KNH → TSA May 26, 05:20 UTCMay 26, 05:54 UTC35m
2026-05-26 UIA8811 TSA → KNH May 26, 03:15 UTCMay 26, 03:50 UTC35m
2026-05-26 UIA8602 MZG → TSA May 26, 01:14 UTCMay 26, 01:55 UTC40m
2026-05-25 UIA8601 TSA → MZG May 25, 23:30 UTCMay 26, 00:04 UTC35m
2026-05-25 UIA9210 KNH → TSA May 25, 13:45 UTCMay 25, 14:10 UTC25m
2026-05-25 UIA9209 TSA → KNH May 25, 11:40 UTCMay 25, 12:10 UTC30m
2026-05-25 UIA9116 MZG → TSA May 25, 09:50 UTCMay 25, 10:25 UTC35m
2026-05-25 UIA9115 TSA → MZG May 25, 08:15 UTCMay 25, 08:45 UTC30m
2026-05-25 UIA511 TSA → TSA May 25, 02:15 UTCMay 25, 06:10 UTC3h 55m
2026-05-24 UIA8618 MZG → TSA May 24, 11:00 UTCMay 24, 11:35 UTC35m
2026-05-24 UIA8651 RMQ → MZG May 24, 09:25 UTCMay 24, 09:45 UTC20m
2026-05-24 UIA8652 - May 24, 07:45 UTCMay 24, 08:05 UTC20m
2026-05-24 UIA8617 TSA → MZG May 24, 06:15 UTCMay 24, 06:50 UTC35m
2026-05-24 UIA8610 MZG → TSA May 24, 04:30 UTCMay 24, 05:05 UTC35m
2026-05-24 UIA8609 TSA → MZG May 24, 02:45 UTCMay 24, 03:20 UTC35m
2026-05-24 UIA8602 MZG → TSA May 24, 01:00 UTCMay 24, 01:40 UTC40m
2026-05-23 UIA8601 TSA → MZG May 23, 23:25 UTCMay 23, 23:55 UTC30m
2026-05-23 UIA9118 MZG → TSA May 23, 13:45 UTCMay 23, 14:15 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-16221 page for operator, model, and routing details .

Mode-S 89906D frequently asked

What is Mode-S code 89906D?
89906D is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-16221.
Where is Mode-S 89906D registered?
Mode-S code 89906D is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89906D broadcasting right now?
Mode-S 89906D 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 89906D, octal 42310155, decimal 9,015,405.
What flights does 89906D operate?
Mode-S 89906D has broadcast 20 distinct callsigns, including UIA8609, UIA8812, UIA8811, UIA8835, UIA8821.