Apparatus

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sensors Mode-S transponder

89917E

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18122 · AIRBUS A-321neo

Hex
89917E
Octal
42310576
Decimal
9,015,678
Country
TW
Tail
B-18122
Type
A21N
No current signal · last broadcast 8h ago
Flights observed
186
Distinct callsigns
20
Country
TW
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 89917E.

Country allocation

The ICAO 24-bit address 89917E 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
CAL852 China Airlines 10 2026-05-30
CAL851 China Airlines 7 2026-05-29
CAL187 China Airlines 7 2026-05-25
CAL755 China Airlines 6 2026-05-21
CAL179 China Airlines 6 2026-05-05
CAL109 China Airlines 6 2026-05-20
CAL512 China Airlines 5 2026-05-07
CAL155 China Airlines 5 2026-05-25
CAL129 China Airlines 5 2026-05-28
CAL756 China Airlines 4 2026-05-21
CAL139 China Airlines 4 2026-04-17
CAL123 China Airlines 4 2026-05-30
CAL121 China Airlines 4 2026-05-22
CAL112 China Airlines 4 2026-05-20
CAL915 China Airlines 3 2026-05-01
CAL910 China Airlines 3 2026-05-14
CAL909 China Airlines 3 2026-05-14
CAL602 China Airlines 3 2026-05-09
CAL601 China Airlines 3 2026-05-09
CAL511 China Airlines 3 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CAL123 OKA → TPE May 30, 09:35 UTCMay 30, 13:15 UTC3h 40m
2026-05-30 CAL852 CNX → TPE May 30, 04:25 UTCMay 30, 07:55 UTC3h 30m
2026-05-29 CAL851 TPE → CNX May 29, 23:50 UTCMay 30, 03:05 UTC3h 15m
2026-05-29 CAL123 OKA → TPE May 29, 09:35 UTCMay 29, 13:20 UTC3h 45m
2026-05-29 CAL852 CNX → TPE May 29, 06:35 UTCMay 29, 08:00 UTC1h 25m
2026-05-29 CAL852 CNX → TPE May 29, 04:35 UTCMay 29, 04:50 UTC15m
2026-05-28 CAL851 TPE → CNX May 28, 23:55 UTCMay 29, 03:05 UTC3h 10m
2026-05-28 CAL129 FUK → TPE May 28, 12:10 UTCMay 28, 12:40 UTC30m
2026-05-28 CAL128 TPE → FUK May 28, 07:25 UTCMay 28, 07:50 UTC25m
2026-05-28 CAL188 TPE → PUS May 28, 00:40 UTCMay 28, 05:50 UTC5h 10m
2026-05-27 CAL131 CTS → TPE May 27, 06:25 UTCMay 27, 10:05 UTC3h 40m
2026-05-27 CAL130 TPE → CTS May 27, 01:05 UTCMay 27, 04:39 UTC3h 35m
2026-05-26 CAL129 FUK → TPE May 26, 11:54 UTCMay 26, 12:20 UTC25m
2026-05-26 CAL129 FUK → TPE May 26, 10:29 UTCMay 26, 10:39 UTC10m
2026-05-26 CAL128 TPE → FUK May 26, 07:10 UTCMay 26, 07:40 UTC30m
2026-05-26 CAL188 TPE → PUS May 26, 00:19 UTCMay 26, 05:34 UTC5h 15m
2026-05-25 CAL187 PUS → TPE May 25, 08:05 UTCMay 25, 13:00 UTC4h 55m
2026-05-25 CAL155 NGO → TPE May 25, 05:55 UTCMay 25, 06:20 UTC25m
2026-05-25 CAL155 NGO → TPE May 25, 03:50 UTCMay 25, 04:25 UTC35m
2026-05-25 CAL154 TPE → NGO May 25, 01:55 UTCMay 25, 02:10 UTC15m
2026-05-24 CAL122 TPE → OKA May 24, 09:55 UTCMay 24, 13:30 UTC3h 35m
2026-05-24 CAL852 CNX → TPE May 24, 04:45 UTCMay 24, 08:25 UTC3h 40m
2026-05-23 CAL851 TPE → CNX May 23, 23:40 UTCMay 24, 03:00 UTC3h 20m
2026-05-23 CAL131 CTS → TPE May 23, 06:30 UTCMay 23, 10:20 UTC3h 50m
2026-05-23 CAL130 TPE → CTS May 23, 01:10 UTCMay 23, 04:35 UTC3h 24m
2026-05-22 CAL129 FUK → TPE May 22, 12:15 UTCMay 22, 12:40 UTC25m
2026-05-22 CAL129 FUK → TPE May 22, 10:45 UTCMay 22, 10:55 UTC10m
2026-05-22 CAL128 TPE → FUK May 22, 07:10 UTCMay 22, 07:30 UTC20m
2026-05-22 CAL121 OKA → TPE May 22, 03:50 UTCMay 22, 04:20 UTC30m
2026-05-22 CAL120 TPE → OKA May 22, 00:20 UTCMay 22, 00:45 UTC25m
2026-05-21 CAL756 SIN → TPE May 21, 21:20 UTCMay 21, 22:35 UTC1h 15m
2026-05-21 CAL755 TPE → SIN May 21, 12:05 UTCMay 21, 13:10 UTC1h 5m
2026-05-21 CAL029 ROR → TPE May 21, 10:05 UTCMay 21, 10:25 UTC20m
2026-05-21 CAL029 ROR → TPE May 21, 06:50 UTCMay 21, 07:15 UTC25m
2026-05-21 CAL030 TPE → ROR May 21, 02:10 UTCMay 21, 05:30 UTC3h 20m
2026-05-20 CAL109 NRT → TPE May 20, 14:20 UTCMay 20, 14:40 UTC20m
2026-05-20 CAL109 NRT → TPE May 20, 11:35 UTCMay 20, 12:45 UTC1h 10m
2026-05-20 CAL108 TPE → NRT May 20, 07:05 UTCMay 20, 10:00 UTC2h 55m
2026-05-20 CAL113 HIJ → TPE May 20, 05:05 UTCMay 20, 05:30 UTC25m
2026-05-20 CAL113 HIJ → TPE May 20, 03:15 UTCMay 20, 03:40 UTC25m
2026-05-20 CAL112 TPE → HIJ May 20, 01:15 UTCMay 20, 01:40 UTC25m
2026-05-19 CAL112 TPE → HIJ May 19, 23:35 UTCMay 20, 00:00 UTC25m
2026-05-19 CAL195 KMJ → TPE May 19, 11:15 UTCMay 19, 11:40 UTC25m
2026-05-19 CAL194 TPE → KMJ May 19, 06:45 UTCMay 19, 07:10 UTC25m
2026-05-19 CAL113 HIJ → TPE May 19, 03:00 UTCMay 19, 05:00 UTC2h 0m
2026-05-19 CAL112 TPE → HIJ May 19, 01:15 UTCMay 19, 01:40 UTC25m
2026-05-18 CAL112 TPE → HIJ May 18, 23:30 UTCMay 18, 23:50 UTC20m
2026-05-18 CAL195 KMJ → TPE May 18, 11:10 UTCMay 18, 11:40 UTC30m
2026-05-18 CAL194 TPE → KMJ May 18, 06:40 UTCMay 18, 07:30 UTC50m
2026-05-18 MDA991 - May 18, 00:55 UTCMay 18, 05:10 UTC4h 15m

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-18122 page for operator, model, and routing details .

Mode-S 89917E frequently asked

What is Mode-S code 89917E?
89917E is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18122.
Where is Mode-S 89917E registered?
Mode-S code 89917E is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 89917E broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 89917E, octal 42310576, decimal 9,015,678.
What flights does 89917E operate?
Mode-S 89917E has broadcast 20 distinct callsigns, including CAL852, CAL851, CAL187, CAL755, CAL179.