Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8990EB

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18775 · BOEING 777-200LR

Hex
8990EB
Octal
42310353
Decimal
9,015,531
Country
TW
Tail
B-18775
Type
B77L
No current signal · last broadcast 1h ago
Flights observed
178
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 8990EB.

Country allocation

The ICAO 24-bit address 8990EB 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
CAL5310 China Airlines 22 2026-05-17
CAL5309 China Airlines 15 2026-05-18
CAL5137 China Airlines 8 2026-06-01
CAL5884 China Airlines 7 2026-04-22
CAL5837 China Airlines 7 2026-05-30
CAL5138 China Airlines 7 2026-05-31
CAL5835 China Airlines 6 2026-05-27
CAL5831 China Airlines 6 2026-05-28
CAL5685 China Airlines 6 2026-05-12
CAL5313 China Airlines 6 2026-05-27
CAL5838 China Airlines 5 2026-05-30
CAL5826 China Airlines 5 2026-05-30
CAL5825 China Airlines 5 2026-05-30
CAL5823 - 5 2026-05-23
CAL5312 China Airlines 5 2026-05-29
CAL5311 China Airlines 5 2026-05-29
CAL5314 China Airlines 4 2026-05-26
CAL5161 China Airlines 4 2026-05-22
CAL5883 China Airlines 3 2026-04-21
CAL5836 China Airlines 3 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CAL5231 ORD → ANC Jun 2, 20:30 UTCJun 2, 20:45 UTC15m
2026-06-02 CAL5231 ORD → ANC Jun 2, 11:40 UTCJun 2, 19:15 UTC7h 35m
2026-06-02 CAL5231 ORD → ANC Jun 2, 04:35 UTCJun 2, 10:15 UTC5h 40m
2026-06-01 CAL5232 ANC → ORD Jun 1, 20:50 UTCJun 2, 02:15 UTC5h 25m
2026-06-01 CAL5232 ANC → ORD Jun 1, 11:35 UTCJun 1, 19:10 UTC7h 35m
2026-06-01 CAL5232 ANC → ORD Jun 1, 10:05 UTCJun 1, 10:20 UTC15m
2026-06-01 CAL5137 LAX → TPE Jun 1, 06:55 UTCJun 1, 07:15 UTC20m
2026-05-31 CAL5137 LAX → TPE May 31, 18:15 UTCJun 1, 05:30 UTC11h 15m
2026-05-31 CAL5138 TPE → LAX May 31, 12:55 UTCMay 31, 14:10 UTC1h 15m
2026-05-30 CAL5826 HKG → TPE May 30, 21:35 UTCMay 30, 22:45 UTC1h 10m
2026-05-30 CAL5825 TPE → HKG May 30, 18:00 UTCMay 30, 19:20 UTC1h 20m
2026-05-30 CAL5838 HKG → TPE May 30, 13:20 UTCMay 30, 14:35 UTC1h 15m
2026-05-30 CAL5837 TPE → HKG May 30, 10:10 UTCMay 30, 11:20 UTC1h 10m
2026-05-29 CAL5311 JFK → ANC May 29, 22:05 UTCMay 30, 08:10 UTC10h 5m
2026-05-29 CAL5311 JFK → ANC May 29, 13:45 UTCMay 29, 20:40 UTC6h 55m
2026-05-29 CAL5312 ANC → JFK May 29, 04:45 UTCMay 29, 10:45 UTC6h 0m
2026-05-28 CAL5312 ANC → JFK May 28, 18:40 UTCMay 29, 03:00 UTC8h 20m
2026-05-28 CAL5838 HKG → TPE May 28, 12:55 UTCMay 28, 14:15 UTC1h 20m
2026-05-28 CAL5837 TPE → HKG May 28, 10:15 UTCMay 28, 10:25 UTC10m
2026-05-28 CAL5837 TPE → HKG May 28, 09:15 UTCMay 28, 09:40 UTC25m
2026-05-28 CAL5832 HKG → TPE May 28, 05:40 UTCMay 28, 07:10 UTC1h 30m
2026-05-28 CAL5831 TPE → HKG May 28, 01:45 UTCMay 28, 02:00 UTC15m
2026-05-28 CAL5831 TPE → HKG May 28, 00:45 UTCMay 28, 01:10 UTC25m
2026-05-27 CAL5836 HKG → TPE May 27, 20:55 UTCMay 27, 22:25 UTC1h 30m
2026-05-27 CAL5835 TPE → HKG May 27, 16:20 UTCMay 27, 16:35 UTC15m
2026-05-27 CAL5835 TPE → HKG May 27, 15:20 UTCMay 27, 15:40 UTC20m
2026-05-27 CAL5313 ORD → NGO May 27, 11:40 UTCMay 27, 12:05 UTC25m
2026-05-27 CAL5313 ORD → NGO May 27, 09:45 UTCMay 27, 10:20 UTC35m
2026-05-26 CAL5313 ORD → NGO May 26, 18:19 UTCMay 27, 06:55 UTC12h 35m
2026-05-26 CAL5314 NGO → ORD May 26, 04:15 UTCMay 26, 15:49 UTC11h 35m
2026-05-25 CAL5314 NGO → ORD May 25, 23:45 UTCMay 26, 02:04 UTC2h 20m
2026-05-25 CAL5836 HKG → TPE May 25, 18:50 UTCMay 25, 20:19 UTC1h 29m
2026-05-25 CAL5835 TPE → HKG May 25, 16:25 UTCMay 25, 16:40 UTC15m
2026-05-25 CAL5835 TPE → HKG May 25, 15:20 UTCMay 25, 15:50 UTC30m
2026-05-25 CAL5137 LAX → TPE May 25, 10:05 UTCMay 25, 10:35 UTC30m
2026-05-24 CAL5137 LAX → TPE May 24, 21:10 UTCMay 25, 08:45 UTC11h 35m
2026-05-24 CAL5138 TPE → LAX May 24, 07:35 UTCMay 24, 17:50 UTC10h 15m
2026-05-24 CAL5138 TPE → LAX May 24, 06:05 UTCMay 24, 06:20 UTC15m
2026-05-24 CAL5872 SIN → TPE May 24, 01:30 UTCMay 24, 02:50 UTC1h 20m
2026-05-23 CAL5871 TPE → SIN May 23, 15:45 UTCMay 23, 19:35 UTC3h 50m
2026-05-23 CAL5824 HKG → TPE May 23, 11:25 UTCMay 23, 12:55 UTC1h 30m
2026-05-23 CAL5823 - May 23, 07:20 UTCMay 23, 08:35 UTC1h 15m
2026-05-22 CAL5161 LAX → TPE May 22, 21:50 UTCMay 22, 22:10 UTC20m
2026-05-22 CAL5161 LAX → TPE May 22, 08:45 UTCMay 22, 09:15 UTC30m
2026-05-21 CAL5162 TPE → LAX May 21, 20:00 UTCMay 22, 05:25 UTC9h 25m
2026-05-21 CAL5162 TPE → LAX May 21, 18:05 UTCMay 21, 18:15 UTC10m
2026-05-21 CAL5838 HKG → TPE May 21, 11:45 UTCMay 21, 13:05 UTC1h 20m
2026-05-21 CAL5837 TPE → HKG May 21, 08:45 UTCMay 21, 08:55 UTC10m
2026-05-21 CAL5837 TPE → HKG May 21, 07:40 UTCMay 21, 08:05 UTC25m
2026-05-21 CAL5832 HKG → TPE May 21, 04:05 UTCMay 21, 05:30 UTC1h 25m

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-18775 page for operator, model, and routing details .

Mode-S 8990EB frequently asked

What is Mode-S code 8990EB?
8990EB is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18775.
Where is Mode-S 8990EB registered?
Mode-S code 8990EB is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990EB broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990EB, octal 42310353, decimal 9,015,531.
What flights does 8990EB operate?
Mode-S 8990EB has broadcast 20 distinct callsigns, including CAL5310, CAL5309, CAL5137, CAL5884, CAL5837.