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
No current signal · last broadcast 1h ago
Flights observed
666
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 - 51 2026-07-10
UIA8618 - 43 2026-07-09
UIA8601 - 42 2026-07-09
UIA8617 - 41 2026-07-09
UIA8610 - 40 2026-07-10
UIA8602 - 40 2026-07-10
UIA8651 Uni Air 36 2026-06-28
UIA8652 - 35 2026-06-28
UIA8812 - 25 2026-07-03
UIA8811 - 24 2026-07-03
UIA8801 - 23 2026-07-02
UIA8835 - 22 2026-07-03
UIA8821 - 22 2026-07-03
UIA8836 - 21 2026-07-03
UIA8822 - 21 2026-07-03
UIA8802 - 21 2026-07-03
EVA155 - 12 2026-07-01
EVA156 - 11 2026-07-01
UIA9206 Uni Air 9 2026-04-30
UIA9205 Uni Air 9 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 EVA386 - Jul 14, 12:40 UTCJul 14, 13:15 UTC35m
2026-07-14 EVA386 - Jul 14, 11:35 UTCJul 14, 11:45 UTC10m
2026-07-14 EVA385 - Jul 14, 07:35 UTCJul 14, 08:50 UTC1h 15m
2026-07-13 EVA810 HKG → TPE Jul 13, 14:25 UTCJul 13, 15:50 UTC1h 25m
2026-07-13 EVA809 - Jul 13, 11:15 UTCJul 13, 12:40 UTC1h 25m
2026-07-13 EVA870 HKG → TPE Jul 13, 08:01 UTCJul 13, 09:20 UTC1h 20m
2026-07-13 EVA869 - Jul 13, 05:01 UTCJul 13, 06:20 UTC1h 20m
2026-07-13 EVA113 - Jul 13, 01:40 UTCJul 13, 02:40 UTC1h 0m
2026-07-12 EVA112 - Jul 12, 22:50 UTCJul 13, 00:01 UTC1h 10m
2026-07-12 EVA806 - Jul 12, 12:25 UTCJul 12, 13:50 UTC1h 25m
2026-07-12 EVA805 - Jul 12, 09:00 UTCJul 12, 10:20 UTC1h 20m
2026-07-12 EVA868 HKG → TPE Jul 12, 05:45 UTCJul 12, 07:15 UTC1h 30m
2026-07-12 EVA867 - Jul 12, 03:50 UTCJul 12, 04:05 UTC15m
2026-07-12 EVA867 - Jul 12, 02:45 UTCJul 12, 03:20 UTC35m
2026-07-11 EVA3201 KHH → TPE Jul 11, 22:40 UTCJul 11, 23:30 UTC50m
2026-07-10 EVA3221 TSA → KHH Jul 10, 06:25 UTCJul 10, 07:05 UTC40m
2026-07-10 UIA8610 - Jul 10, 04:30 UTCJul 10, 05:00 UTC30m
2026-07-10 UIA8609 - Jul 10, 02:50 UTCJul 10, 03:20 UTC30m
2026-07-10 UIA8602 - Jul 10, 01:15 UTCJul 10, 01:40 UTC25m
2026-07-09 UIA8601 - Jul 9, 23:30 UTCJul 10, 00:05 UTC35m
2026-07-09 UIA8618 - Jul 9, 11:10 UTCJul 9, 11:45 UTC35m
2026-07-09 UIA8619 - Jul 9, 09:25 UTCJul 9, 09:55 UTC30m
2026-07-09 UIA8622 - Jul 9, 07:50 UTCJul 9, 08:20 UTC30m
2026-07-09 UIA8617 - Jul 9, 06:10 UTCJul 9, 06:40 UTC30m
2026-07-09 UIA8610 - Jul 9, 04:30 UTCJul 9, 05:00 UTC30m
2026-07-09 UIA8609 - Jul 9, 02:45 UTCJul 9, 03:20 UTC35m
2026-07-09 UIA8602 - Jul 9, 01:15 UTCJul 9, 01:45 UTC30m
2026-07-08 UIA8601 - Jul 8, 23:25 UTCJul 9, 00:05 UTC40m
2026-07-08 UIA8618 - Jul 8, 11:10 UTCJul 8, 11:35 UTC25m
2026-07-08 UIA8619 - Jul 8, 09:25 UTCJul 8, 09:55 UTC30m
2026-07-08 UIA8622 - Jul 8, 07:45 UTCJul 8, 08:20 UTC35m
2026-07-08 UIA8617 - Jul 8, 06:10 UTCJul 8, 06:40 UTC30m
2026-07-08 UIA8610 - Jul 8, 04:35 UTCJul 8, 05:10 UTC35m
2026-07-08 UIA8609 - Jul 8, 02:55 UTCJul 8, 03:30 UTC35m
2026-07-08 UIA8602 - Jul 8, 01:15 UTCJul 8, 01:45 UTC30m
2026-07-07 UIA8601 TSA → MZG Jul 7, 23:25 UTCJul 7, 23:55 UTC30m
2026-07-07 UIA8618 - Jul 7, 11:10 UTCJul 7, 11:40 UTC30m
2026-07-07 UIA8619 - Jul 7, 09:25 UTCJul 7, 10:00 UTC35m
2026-07-07 UIA8622 - Jul 7, 07:45 UTCJul 7, 08:15 UTC30m
2026-07-07 UIA8617 - Jul 7, 06:10 UTCJul 7, 06:40 UTC30m
2026-07-07 UIA8610 - Jul 7, 04:20 UTCJul 7, 04:50 UTC30m
2026-07-07 UIA8609 - Jul 7, 02:50 UTCJul 7, 03:25 UTC35m
2026-07-07 UIA8602 - Jul 7, 01:10 UTCJul 7, 01:35 UTC25m
2026-07-06 UIA8601 TSA → MZG Jul 6, 23:20 UTCJul 6, 23:55 UTC35m
2026-07-06 UIA8618 MZG → TSA Jul 6, 11:05 UTCJul 6, 11:40 UTC35m
2026-07-06 UIA8619 - Jul 6, 09:35 UTCJul 6, 10:05 UTC30m
2026-07-06 UIA8622 - Jul 6, 07:50 UTCJul 6, 08:20 UTC30m
2026-07-06 UIA8617 - Jul 6, 06:20 UTCJul 6, 06:50 UTC30m
2026-07-06 UIA8610 - Jul 6, 04:35 UTCJul 6, 05:20 UTC45m
2026-07-06 UIA8609 - Jul 6, 03:00 UTCJul 6, 03:35 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-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?
No active broadcast right now. Last signal was 1h ago.
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, UIA8618, UIA8601, UIA8617, UIA8610.