Apparatus

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sensors Mode-S transponder

89911A

ICAO 24-bit transponder address · allocated to Taiwan

Hex
89911A
Octal
42310432
Decimal
9,015,578
Country
TW
Broadcasting now · callsign CAL312 · 29,000 ft
Flights observed
110
Distinct callsigns
20
Country
TW
Last broadcast
21d ago

Current position

89911A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 89911A 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
MDA1269 Mandarin Airlines 14 2026-07-20
MDA1270 - 13 2026-07-20
MDA1264 Mandarin Airlines 12 2026-07-20
MDA1263 Mandarin Airlines 12 2026-07-20
CAL310 China Airlines 9 2026-07-26
MDA798 Mandarin Airlines 6 2026-07-26
CAL311 China Airlines 6 2026-07-26
MDA797 Mandarin Airlines 5 2026-07-26
MDA356 Mandarin Airlines 5 2026-07-26
MDA355 Mandarin Airlines 5 2026-07-26
MDA796 - 2 2026-07-04
MDA795 - 2 2026-07-04
CAL1910 - 2 2026-06-28
MDA7853 - 1 2026-07-05
MDA7852 Mandarin Airlines 1 2026-07-20
MDA774 - 1 2026-07-05
MDA773 - 1 2026-07-05
MDA364 - 1 2026-07-04
MDA363 - 1 2026-07-04
MDA354 - 1 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 MDA798 MZG → RMQ Jul 26, 12:40 UTCJul 26, 13:00 UTC20m
2026-07-26 MDA355 KHH → MZG Jul 26, 10:55 UTCJul 26, 11:15 UTC20m
2026-07-26 MDA356 MZG → KHH Jul 26, 09:10 UTCJul 26, 09:30 UTC20m
2026-07-26 MDA797 RMQ → MZG Jul 26, 07:40 UTCJul 26, 08:00 UTC20m
2026-07-26 CAL311 OKA → RMQ Jul 26, 04:55 UTCJul 26, 06:10 UTC1h 15m
2026-07-26 CAL310 RMQ → OKA Jul 26, 02:10 UTCJul 26, 02:35 UTC25m
2026-07-25 MDA798 MZG → RMQ Jul 25, 12:40 UTCJul 25, 13:00 UTC20m
2026-07-25 MDA355 KHH → MZG Jul 25, 10:55 UTCJul 25, 11:20 UTC25m
2026-07-25 MDA356 MZG → KHH Jul 25, 09:20 UTCJul 25, 09:35 UTC15m
2026-07-25 MDA797 RMQ → MZG Jul 25, 07:40 UTCJul 25, 07:55 UTC15m
2026-07-25 CAL311 OKA → RMQ Jul 25, 05:00 UTCJul 25, 06:00 UTC1h 0m
2026-07-25 CAL310 RMQ → OKA Jul 25, 02:15 UTCJul 25, 02:45 UTC30m
2026-07-24 MDA798 - Jul 24, 13:20 UTCJul 24, 13:35 UTC15m
2026-07-24 MDA355 KHH → MZG Jul 24, 11:35 UTCJul 24, 12:00 UTC25m
2026-07-24 MDA356 MZG → KHH Jul 24, 09:50 UTCJul 24, 10:15 UTC25m
2026-07-24 MDA797 RMQ → MZG Jul 24, 08:10 UTCJul 24, 08:30 UTC20m
2026-07-24 CAL311 OKA → RMQ Jul 24, 05:40 UTCJul 24, 06:10 UTC30m
2026-07-24 CAL310 RMQ → OKA Jul 24, 03:20 UTCJul 24, 03:35 UTC15m
2026-07-24 CAL310 RMQ → OKA Jul 24, 02:25 UTCJul 24, 02:50 UTC25m
2026-07-23 MDA798 - Jul 23, 12:40 UTCJul 23, 12:55 UTC15m
2026-07-23 MDA355 - Jul 23, 11:05 UTCJul 23, 11:25 UTC20m
2026-07-23 MDA356 - Jul 23, 09:15 UTCJul 23, 09:50 UTC35m
2026-07-23 MDA797 - Jul 23, 07:35 UTCJul 23, 08:05 UTC30m
2026-07-23 CAL311 OKA → RMQ Jul 23, 05:50 UTCJul 23, 06:15 UTC25m
2026-07-23 CAL310 RMQ → OKA Jul 23, 03:35 UTCJul 23, 03:45 UTC10m
2026-07-23 CAL310 RMQ → OKA Jul 23, 02:35 UTCJul 23, 03:00 UTC25m
2026-07-22 MDA798 - Jul 22, 12:40 UTCJul 22, 12:55 UTC15m
2026-07-22 CAL311 OKA → RMQ Jul 22, 05:00 UTCJul 22, 11:20 UTC6h 20m
2026-07-22 CAL310 RMQ → OKA Jul 22, 02:30 UTCJul 22, 02:55 UTC25m
2026-07-21 MDA798 - Jul 21, 12:40 UTCJul 21, 13:00 UTC20m
2026-07-21 MDA355 - Jul 21, 11:00 UTCJul 21, 11:20 UTC20m
2026-07-21 MDA356 - Jul 21, 09:15 UTCJul 21, 09:50 UTC35m
2026-07-21 MDA797 - Jul 21, 07:45 UTCJul 21, 08:00 UTC15m
2026-07-21 CAL311 OKA → RMQ Jul 21, 05:55 UTCJul 21, 06:25 UTC30m
2026-07-21 CAL310 RMQ → OKA Jul 21, 03:30 UTCJul 21, 03:45 UTC15m
2026-07-21 CAL310 RMQ → OKA Jul 21, 02:25 UTCJul 21, 02:55 UTC30m
2026-07-20 MDA7852 RMQ → TPE Jul 20, 09:00 UTCJul 20, 09:30 UTC30m
2026-07-20 MDA1270 - Jul 20, 06:45 UTCJul 20, 07:15 UTC30m
2026-07-20 MDA1269 TSA → KNH Jul 20, 04:35 UTCJul 20, 05:05 UTC30m
2026-07-20 MDA1264 KNH → TSA Jul 20, 02:50 UTCJul 20, 03:20 UTC30m
2026-07-20 MDA1263 TSA → KNH Jul 20, 00:40 UTCJul 20, 01:15 UTC35m
2026-07-19 MDA1276 - Jul 19, 11:20 UTCJul 19, 11:55 UTC35m
2026-07-19 MDA1275 - Jul 19, 09:10 UTCJul 19, 09:40 UTC30m
2026-07-19 MDA1270 - Jul 19, 06:45 UTCJul 19, 07:20 UTC35m
2026-07-19 MDA1269 TSA → KNH Jul 19, 04:40 UTCJul 19, 05:10 UTC30m
2026-07-19 MDA1264 - Jul 19, 02:45 UTCJul 19, 03:20 UTC35m
2026-07-19 MDA1263 - Jul 19, 00:40 UTCJul 19, 01:05 UTC25m
2026-07-18 MDA1270 - Jul 18, 07:00 UTCJul 18, 07:30 UTC30m
2026-07-18 MDA1269 - Jul 18, 04:45 UTCJul 18, 05:15 UTC30m
2026-07-18 MDA1264 - Jul 18, 02:45 UTCJul 18, 03:20 UTC36m

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.

Mode-S 89911A frequently asked

What is Mode-S code 89911A?
89911A is an ICAO 24-bit transponder address. Allocated to Taiwan.
Where is Mode-S 89911A registered?
Mode-S code 89911A is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89911A broadcasting right now?
Yes. Mode-S 89911A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89911A, octal 42310432, decimal 9,015,578.
What flights does 89911A operate?
Mode-S 89911A has broadcast 20 distinct callsigns, including MDA1269, MDA1270, MDA1264, MDA1263, CAL310.