Apparatus

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sensors Mode-S transponder

8990ED

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18918 · AIRBUS A-350-900

Hex
8990ED
Octal
42310355
Decimal
9,015,533
Country
TW
Tail
B-18918
Type
A359
No current signal · last broadcast 2h ago
Flights observed
198
Distinct callsigns
20
Country
TW
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 8990ED.

Country allocation

The ICAO 24-bit address 8990ED 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 - 18 2026-07-06
CAL036 - 14 2026-06-17
CAL035 - 14 2026-06-18
CAL062 China Airlines 13 2026-07-07
CAL061 China Airlines 13 2026-07-06
CAL762 - 12 2026-07-06
CAL502 - 8 2026-06-16
CAL832 China Airlines 7 2026-05-19
CAL053 - 7 2026-06-13
CAL831 China Airlines 6 2026-05-19
CAL054 - 6 2026-06-13
CAL051 China Airlines 6 2026-06-10
CAL753 - 5 2026-07-08
CAL052 China Airlines 5 2026-06-11
CAL754 - 4 2026-07-08
CAL504 - 4 2026-07-09
CAL081 - 4 2026-06-23
CAL063 - 4 2026-07-13
CAL782 - 3 2026-06-19
CAL501 China Airlines 3 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CAL063 - Jul 13, 15:40 UTCJul 14, 04:15 UTC12h 35m
2026-07-13 CAL121 - Jul 13, 04:00 UTCJul 13, 04:25 UTC25m
2026-07-13 CAL120 - Jul 13, 01:25 UTCJul 13, 01:45 UTC20m
2026-07-13 CAL120 - Jul 13, 00:20 UTCJul 13, 00:50 UTC30m
2026-07-12 CAL904 HKG → TPE Jul 12, 03:45 UTCJul 12, 05:10 UTC1h 25m
2026-07-12 CAL903 - Jul 12, 00:55 UTCJul 12, 02:05 UTC1h 10m
2026-07-11 CAL074 - Jul 11, 09:45 UTCJul 11, 22:35 UTC12h 50m
2026-07-09 CAL073 - Jul 9, 16:25 UTCJul 10, 06:05 UTC13h 40m
2026-07-09 CAL504 - Jul 9, 08:50 UTCJul 9, 13:35 UTC4h 45m
2026-07-08 CAL754 - Jul 8, 09:35 UTCJul 8, 10:35 UTC1h 0m
2026-07-08 CAL753 - Jul 8, 00:35 UTCJul 8, 04:25 UTC3h 50m
2026-07-07 CAL062 FRA → TPE Jul 7, 09:45 UTCJul 7, 21:50 UTC12h 5m
2026-07-06 CAL061 TPE → FRA Jul 6, 15:05 UTCJul 6, 20:55 UTC5h 50m
2026-07-06 CAL762 - Jul 6, 09:50 UTCJul 6, 13:05 UTC3h 15m
2026-07-06 CAL761 - Jul 6, 06:20 UTCJul 6, 06:35 UTC15m
2026-07-06 CAL761 - Jul 6, 01:40 UTCJul 6, 04:45 UTC3h 5m
2026-07-05 CAL762 - Jul 5, 10:55 UTCJul 5, 14:15 UTC3h 20m
2026-07-05 CAL762 - Jul 5, 09:20 UTCJul 5, 09:30 UTC10m
2026-07-05 CAL761 - Jul 5, 06:45 UTCJul 5, 07:05 UTC20m
2026-07-05 CAL761 - Jul 5, 02:05 UTCJul 5, 05:20 UTC3h 15m
2026-06-26 CAL762 - Jun 26, 10:10 UTCJun 26, 13:45 UTC3h 35m
2026-06-26 CAL761 - Jun 26, 06:29 UTCJun 26, 06:50 UTC20m
2026-06-26 CAL761 - Jun 26, 02:05 UTCJun 26, 05:05 UTC3h 0m
2026-06-25 CAL064 - Jun 25, 09:45 UTCJun 25, 21:15 UTC11h 30m
2026-06-24 CAL063 TPE → VIE Jun 24, 16:14 UTCJun 25, 04:40 UTC12h 25m
2026-06-23 CAL082 - Jun 23, 21:10 UTCJun 24, 10:10 UTC13h 0m
2026-06-23 CAL081 - Jun 23, 02:04 UTCJun 23, 15:15 UTC13h 10m
2026-06-23 CAL081 - Jun 23, 01:04 UTCJun 23, 01:30 UTC25m
2026-06-22 CAL762 - Jun 22, 09:45 UTCJun 22, 12:54 UTC3h 10m
2026-06-22 CAL761 - Jun 22, 06:05 UTCJun 22, 06:19 UTC15m
2026-06-22 CAL761 - Jun 22, 01:29 UTCJun 22, 04:44 UTC3h 15m
2026-06-21 CAL062 FRA → TPE Jun 21, 09:44 UTCJun 21, 21:49 UTC12h 5m
2026-06-20 CAL061 TPE → FRA Jun 20, 14:59 UTCJun 20, 21:00 UTC6h 0m
2026-06-20 CAL153 KIX → TPE Jun 20, 05:19 UTCJun 20, 07:49 UTC2h 30m
2026-06-20 CAL152 TPE → KIX Jun 20, 01:34 UTCJun 20, 03:44 UTC2h 10m
2026-06-19 CAL782 - Jun 19, 00:45 UTCJun 19, 08:44 UTC8h 0m
2026-06-18 CAL035 - Jun 18, 06:40 UTCJun 18, 20:25 UTC13h 45m
2026-06-17 CAL036 - Jun 17, 11:20 UTCJun 17, 22:05 UTC10h 45m
2026-06-17 CAL036 - Jun 17, 09:55 UTCJun 17, 10:15 UTC20m
2026-06-16 CAL782 - Jun 16, 23:45 UTCJun 17, 07:20 UTC7h 35m
2026-06-16 CAL163 - Jun 16, 11:35 UTCJun 16, 13:50 UTC2h 15m
2026-06-16 CAL162 TPE → ICN Jun 16, 08:00 UTCJun 16, 09:55 UTC1h 55m
2026-06-16 CAL502 - Jun 16, 01:10 UTCJun 16, 05:45 UTC4h 35m
2026-06-15 CAL035 PHX → TPE Jun 15, 06:49 UTCJun 15, 20:50 UTC14h 0m
2026-06-14 CAL036 - Jun 14, 09:50 UTCJun 14, 21:30 UTC11h 40m
2026-06-13 CAL054 BNE → TPE Jun 13, 12:55 UTCJun 13, 21:25 UTC8h 30m
2026-06-13 CAL054 - Jun 13, 07:50 UTCJun 13, 10:35 UTC2h 45m
2026-06-13 CAL053 - Jun 13, 03:15 UTCJun 13, 06:10 UTC2h 54m
2026-06-12 CAL053 TPE → BNE Jun 12, 16:10 UTCJun 13, 00:30 UTC8h 20m
2026-06-12 CAL504 PVG → TPE Jun 12, 08:40 UTCJun 12, 13:50 UTC5h 10m

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-18918 page for operator, model, and routing details .

Mode-S 8990ED frequently asked

What is Mode-S code 8990ED?
8990ED is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18918.
Where is Mode-S 8990ED registered?
Mode-S code 8990ED is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990ED broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990ED, octal 42310355, decimal 9,015,533.
What flights does 8990ED operate?
Mode-S 8990ED has broadcast 20 distinct callsigns, including CAL761, CAL036, CAL035, CAL062, CAL061.