Apparatus

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sensors Mode-S transponder

8990EC

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18917 · AIRBUS A-350-900

Hex
8990EC
Octal
42310354
Decimal
9,015,532
Country
TW
Tail
B-18917
Type
A359
No current signal · last broadcast Jul 26, 22:20 UTC
Flights observed
219
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 22:20 UTC

Last known position

Most recent position reported by Mode-S 8990EC.

Country allocation

The ICAO 24-bit address 8990EC 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
CAL761 China Airlines 19 2026-07-21
CAL762 China Airlines 14 2026-07-21
CAL075 - 10 2026-06-23
CAL062 China Airlines 9 2026-07-26
CAL054 - 9 2026-07-09
CAL053 - 9 2026-07-09
CAL023 China Airlines 9 2026-06-28
CAL061 China Airlines 8 2026-07-25
CAL152 China Airlines 7 2026-07-25
CAL076 - 7 2026-06-24
CAL074 - 7 2026-06-22
CAL073 China Airlines 7 2026-06-21
CAL064 China Airlines 7 2026-05-28
CAL024 - 7 2026-06-27
CAL082 - 6 2026-07-03
CAL081 - 6 2026-07-03
CAL063 China Airlines 6 2026-05-27
CAL022 China Airlines 6 2026-05-23
CAL753 China Airlines 5 2026-07-24
CAL153 China Airlines 5 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL062 FRA → TPE Jul 26, 09:50 UTCJul 26, 22:15 UTC12h 25m
2026-07-25 CAL061 TPE → FRA Jul 25, 15:25 UTCJul 26, 01:50 UTC10h 25m
2026-07-25 CAL153 KIX → TPE Jul 25, 07:25 UTCJul 25, 07:40 UTC15m
2026-07-25 CAL153 KIX → TPE Jul 25, 05:25 UTCJul 25, 06:05 UTC40m
2026-07-25 CAL152 TPE → KIX Jul 25, 03:05 UTCJul 25, 03:55 UTC50m
2026-07-25 CAL152 TPE → KIX Jul 25, 01:35 UTCJul 25, 01:50 UTC15m
2026-07-24 CAL754 SIN → TPE Jul 24, 09:20 UTCJul 24, 10:50 UTC1h 30m
2026-07-24 CAL753 TPE → SIN Jul 24, 04:35 UTCJul 24, 04:45 UTC10m
2026-07-24 CAL753 TPE → SIN Jul 24, 00:50 UTCJul 24, 01:55 UTC1h 5m
2026-07-23 CAL035 PHX → TPE Jul 23, 19:35 UTCJul 23, 19:55 UTC20m
2026-07-23 CAL035 PHX → TPE Jul 23, 06:30 UTCJul 23, 18:20 UTC11h 50m
2026-07-22 CAL036 TPE → PHX Jul 22, 11:10 UTCJul 22, 22:45 UTC11h 35m
2026-07-21 CAL781 TPE → SGN Jul 21, 23:55 UTCJul 22, 01:00 UTC1h 5m
2026-07-21 CAL762 CGK → TPE Jul 21, 10:20 UTCJul 21, 13:35 UTC3h 15m
2026-07-21 CAL761 TPE → CGK Jul 21, 06:20 UTCJul 21, 06:35 UTC15m
2026-07-21 CAL761 TPE → CGK Jul 21, 01:50 UTCJul 21, 04:55 UTC3h 5m
2026-07-20 CAL035 PHX → TPE Jul 20, 06:40 UTCJul 20, 20:00 UTC13h 20m
2026-07-19 CAL036 TPE → PHX Jul 19, 10:00 UTCJul 19, 22:40 UTC12h 40m
2026-07-19 CAL501 TPE → TPE Jul 19, 01:25 UTCJul 19, 06:20 UTC4h 55m
2026-07-18 CAL762 - Jul 18, 10:00 UTCJul 18, 13:30 UTC3h 30m
2026-07-18 CAL761 - Jul 18, 06:15 UTCJul 18, 06:35 UTC20m
2026-07-18 CAL761 - Jul 18, 01:45 UTCJul 18, 04:40 UTC2h 56m
2026-07-13 CAL101 NRT → TPE Jul 13, 07:40 UTCJul 13, 10:25 UTC2h 45m
2026-07-13 CAL100 - Jul 13, 02:40 UTCJul 13, 05:35 UTC2h 55m
2026-07-11 CAL916D HKG → TPE Jul 11, 23:40 UTCJul 12, 01:10 UTC1h 30m
2026-07-10 CAL915 - Jul 10, 06:45 UTCJul 10, 08:05 UTC1h 20m
2026-07-09 CAL054 BNE → TPE Jul 9, 13:50 UTCJul 9, 22:20 UTC8h 30m
2026-07-09 CAL054 - Jul 9, 08:10 UTCJul 9, 11:50 UTC3h 40m
2026-07-09 CAL053 BNE → AKL Jul 9, 03:15 UTCJul 9, 06:10 UTC2h 55m
2026-07-08 CAL053 - Jul 8, 16:20 UTCJul 9, 00:05 UTC7h 45m
2026-07-08 CAL762 - Jul 8, 09:30 UTCJul 8, 12:55 UTC3h 25m
2026-07-08 CAL761 - Jul 8, 05:55 UTCJul 8, 06:15 UTC20m
2026-07-08 CAL761 - Jul 8, 01:30 UTCJul 8, 04:35 UTC3h 5m
2026-07-07 CAL054 BNE → TPE Jul 7, 13:10 UTCJul 7, 21:35 UTC8h 25m
2026-07-07 CAL054 - Jul 7, 08:05 UTCJul 7, 11:05 UTC3h 0m
2026-07-07 CAL053 - Jul 7, 03:25 UTCJul 7, 06:10 UTC2h 45m
2026-07-06 CAL053 TPE → BNE Jul 6, 16:20 UTCJul 7, 00:10 UTC7h 50m
2026-07-06 CAL754 - Jul 6, 09:00 UTCJul 6, 10:15 UTC1h 15m
2026-07-06 CAL753 - Jul 6, 03:55 UTCJul 6, 04:15 UTC20m
2026-07-06 CAL753 - Jul 6, 00:20 UTCJul 6, 01:25 UTC1h 5m
2026-07-05 CAL054 BNE → TPE Jul 5, 13:00 UTCJul 5, 21:25 UTC8h 25m
2026-07-05 CAL054 - Jul 5, 07:50 UTCJul 5, 11:10 UTC3h 20m
2026-07-05 CAL053 BNE → AKL Jul 5, 03:20 UTCJul 5, 05:50 UTC2h 30m
2026-07-04 CAL053 - Jul 4, 23:20 UTCJul 5, 00:35 UTC1h 15m
2026-07-04 CAL053 - Jul 4, 16:35 UTCJul 4, 17:00 UTC25m
2026-07-03 CAL082 LHR → TPE Jul 3, 20:45 UTCJul 4, 09:45 UTC13h 0m
2026-07-03 CAL081 - Jul 3, 02:35 UTCJul 3, 15:55 UTC13h 20m
2026-07-03 CAL081 - Jul 3, 01:40 UTCJul 3, 02:00 UTC20m
2026-07-02 CAL163 ICN → TPE Jul 2, 11:50 UTCJul 2, 13:55 UTC2h 5m
2026-07-02 CAL162 TPE → ICN Jul 2, 07:45 UTCJul 2, 09:50 UTC2h 5m

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-18917 page for operator, model, and routing details .

Mode-S 8990EC frequently asked

What is Mode-S code 8990EC?
8990EC is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18917.
Where is Mode-S 8990EC registered?
Mode-S code 8990EC is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990EC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990EC, octal 42310354, decimal 9,015,532.
What flights does 8990EC operate?
Mode-S 8990EC has broadcast 20 distinct callsigns, including CAL761, CAL762, CAL075, CAL062, CAL054.