Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8990EA

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18108 · AIRBUS A-321neo

Hex
8990EA
Octal
42310352
Decimal
9,015,530
Country
TW
Tail
B-18108
Type
A21N
No current signal · last broadcast Jul 26, 12:10 UTC
Flights observed
417
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 12:10 UTC

Last known position

Most recent position reported by Mode-S 8990EA.

Country allocation

The ICAO 24-bit address 8990EA 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
CAL764 - 12 2026-07-19
CAL155 China Airlines 12 2026-07-23
CAL107 - 12 2026-07-13
CAL794 China Airlines 11 2026-07-24
CAL189 - 11 2026-07-07
CAL763 China Airlines 10 2026-07-19
CAL188 - 10 2026-07-07
CAL154 China Airlines 10 2026-07-23
CAL151 - 10 2026-07-04
CAL106 China Airlines 10 2026-07-26
CAL851 - 9 2026-07-19
CAL793 China Airlines 9 2026-07-24
CAL123 China Airlines 9 2026-06-14
CAL909 - 8 2026-07-03
CAL187 China Airlines 8 2026-07-23
CAL150 - 8 2026-07-03
CAL904 - 7 2026-07-22
CAL903 - 7 2026-07-22
CAL852 China Airlines 7 2026-07-19
CAL838 China Airlines 7 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL106 TPE → NRT Jul 26, 08:35 UTCJul 26, 12:00 UTC3h 25m
2026-07-26 CAL705 TPE → CEB Jul 26, 00:30 UTCJul 26, 06:45 UTC6h 16m
2026-07-25 CAL027 ROR → TPE Jul 25, 12:50 UTCJul 25, 13:20 UTC30m
2026-07-25 CAL027 ROR → TPE Jul 25, 09:45 UTCJul 25, 10:20 UTC35m
2026-07-25 CAL028 TPE → ROR Jul 25, 04:50 UTCJul 25, 08:20 UTC3h 30m
2026-07-25 CAL395 KMJ → TPE Jul 25, 03:00 UTCJul 25, 03:20 UTC20m
2026-07-24 CAL394 TPE → KMJ Jul 24, 22:10 UTCJul 24, 22:20 UTC10m
2026-07-24 CAL794 HAN → TPE Jul 24, 12:30 UTCJul 24, 14:30 UTC2h 0m
2026-07-24 CAL794 HAN → TPE Jul 24, 11:30 UTCJul 24, 11:40 UTC10m
2026-07-24 CAL793 TPE → HAN Jul 24, 06:50 UTCJul 24, 08:05 UTC1h 15m
2026-07-24 CAL279 TAK → TPE Jul 24, 05:00 UTCJul 24, 05:25 UTC25m
2026-07-24 CAL279 TAK → TPE Jul 24, 03:00 UTCJul 24, 04:25 UTC1h 25m
2026-07-23 CAL278 TPE → TAK Jul 23, 23:25 UTCJul 24, 01:35 UTC2h 10m
2026-07-23 CAL187 PUS → TPE Jul 23, 13:00 UTCJul 23, 13:25 UTC25m
2026-07-23 CAL187 PUS → TPE Jul 23, 11:30 UTCJul 23, 11:50 UTC20m
2026-07-23 CAL186 TPE → PUS Jul 23, 09:45 UTCJul 23, 10:10 UTC25m
2026-07-23 CAL186 TPE → PUS Jul 23, 08:10 UTCJul 23, 08:40 UTC30m
2026-07-23 CAL155 NGO → TPE Jul 23, 06:30 UTCJul 23, 06:45 UTC15m
2026-07-23 CAL155 NGO → TPE Jul 23, 04:25 UTCJul 23, 05:10 UTC45m
2026-07-23 CAL154 TPE → NGO Jul 23, 02:10 UTCJul 23, 02:55 UTC45m
2026-07-23 CAL154 TPE → NGO Jul 23, 00:25 UTCJul 23, 00:40 UTC15m
2026-07-22 CAL920 - Jul 22, 12:30 UTCJul 22, 14:05 UTC1h 35m
2026-07-22 CAL919 TPE → HKG Jul 22, 11:15 UTCJul 22, 11:25 UTC10m
2026-07-22 CAL904 - Jul 22, 04:45 UTCJul 22, 05:25 UTC40m
2026-07-22 CAL903 TPE → HKG Jul 22, 00:20 UTCJul 22, 01:35 UTC1h 15m
2026-07-21 CAL732 PEN → TPE Jul 21, 02:15 UTCJul 21, 12:20 UTC10h 5m
2026-07-20 CAL731 TPE → PEN Jul 20, 01:45 UTCJul 20, 11:50 UTC10h 5m
2026-07-19 CAL764 - Jul 19, 20:00 UTCJul 19, 23:20 UTC3h 20m
2026-07-19 CAL763 TPE → CGK Jul 19, 16:25 UTCJul 19, 16:40 UTC15m
2026-07-19 CAL763 TPE → CGK Jul 19, 11:30 UTCJul 19, 14:55 UTC3h 25m
2026-07-19 CAL852 CNX → TPE Jul 19, 04:45 UTCJul 19, 08:05 UTC3h 20m
2026-07-19 CAL851 - Jul 19, 00:05 UTCJul 19, 03:15 UTC3h 10m
2026-07-18 CAL027 ROR → TPE Jul 18, 13:05 UTCJul 18, 13:20 UTC15m
2026-07-18 CAL027 ROR → TPE Jul 18, 09:50 UTCJul 18, 10:20 UTC30m
2026-07-18 CAL028 - Jul 18, 07:45 UTCJul 18, 08:25 UTC40m
2026-07-18 CAL028 - Jul 18, 04:50 UTCJul 18, 05:10 UTC20m
2026-07-18 CAL395 - Jul 18, 03:00 UTCJul 18, 03:15 UTC15m
2026-07-18 CAL395 - Jul 18, 01:34 UTCJul 18, 01:45 UTC10m
2026-07-17 CAL394 - Jul 17, 22:20 UTCJul 17, 23:10 UTC50m
2026-07-17 CAL790 TPE → TPE Jul 17, 07:25 UTCJul 17, 13:25 UTC6h 0m
2026-07-17 CAL904 HKG → TPE Jul 17, 03:55 UTCJul 17, 05:30 UTC1h 35m
2026-07-17 CAL903 - Jul 17, 00:20 UTCJul 17, 01:59 UTC1h 40m
2026-07-16 CAL836 - Jul 16, 14:55 UTCJul 16, 16:00 UTC1h 5m
2026-07-16 CAL836 - Jul 16, 12:34 UTCJul 16, 12:49 UTC15m
2026-07-16 CAL835 - Jul 16, 08:55 UTCJul 16, 09:25 UTC30m
2026-07-16 CAL835 - Jul 16, 05:55 UTCJul 16, 06:50 UTC55m
2026-07-16 CAL121 - Jul 16, 04:10 UTCJul 16, 04:25 UTC15m
2026-07-16 CAL120 - Jul 16, 01:30 UTCJul 16, 01:45 UTC15m
2026-07-16 CAL120 - Jul 16, 00:35 UTCJul 16, 00:55 UTC20m
2026-07-15 CAL704 - Jul 15, 09:20 UTCJul 15, 11:10 UTC1h 50m

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-18108 page for operator, model, and routing details .

Mode-S 8990EA frequently asked

What is Mode-S code 8990EA?
8990EA is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18108.
Where is Mode-S 8990EA registered?
Mode-S code 8990EA is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990EA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990EA, octal 42310352, decimal 9,015,530.
What flights does 8990EA operate?
Mode-S 8990EA has broadcast 20 distinct callsigns, including CAL764, CAL155, CAL107, CAL794, CAL189.