Apparatus

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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
Broadcasting now · callsign CAL5322 · 31,000 ft
Flights observed
314
Distinct callsigns
20
Country
TW
Last broadcast
1h ago

Current position

8990EB is currently broadcasting. Map zoomed to live position.

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
CAL5382 - 15 2026-07-06
CAL5381 - 15 2026-07-06
CAL5309 China Airlines 15 2026-05-18
CAL5685 - 13 2026-07-15
CAL5837 China Airlines 11 2026-06-11
CAL5165 - 11 2026-07-12
CAL5138 - 10 2026-07-03
CAL5137 - 10 2026-07-03
CAL5835 - 9 2026-07-08
CAL5831 - 9 2026-07-12
CAL5686 - 9 2026-07-16
CAL5313 - 9 2026-07-10
CAL5166 - 9 2026-07-10
CAL5884 China Airlines 7 2026-04-22
CAL5838 China Airlines 7 2026-06-11
CAL5823 - 7 2026-07-04
CAL5314 - 6 2026-07-09
CAL5872 - 5 2026-07-05
CAL5836 - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CAL5322 ANC → JFK Jul 18, 00:45 UTCJul 18, 00:55 UTC10m
2026-07-17 CAL5175 SFO → TPE Jul 17, 15:35 UTCJul 17, 16:24 UTC50m
2026-07-17 CAL5175 SFO → TPE Jul 17, 03:45 UTCJul 17, 14:30 UTC10h 45m
2026-07-16 CAL5176 - Jul 16, 15:10 UTCJul 17, 01:09 UTC10h 0m
2026-07-16 CAL5176 - Jul 16, 13:25 UTCJul 16, 13:34 UTC10m
2026-07-16 CAL5686 - Jul 16, 04:05 UTCJul 16, 09:35 UTC5h 30m
2026-07-16 CAL5686 - Jul 16, 02:40 UTCJul 16, 02:50 UTC10m
2026-07-15 CAL5686 - Jul 15, 14:55 UTCJul 15, 23:10 UTC8h 15m
2026-07-15 CAL5685 - Jul 15, 02:50 UTCJul 15, 11:50 UTC9h 0m
2026-07-15 CAL5685 - Jul 15, 00:35 UTCJul 15, 00:50 UTC15m
2026-07-14 CAL5685 - Jul 14, 18:25 UTCJul 14, 23:30 UTC5h 4m
2026-07-14 CAL5153 - Jul 14, 13:30 UTCJul 14, 14:00 UTC30m
2026-07-14 CAL5153 - Jul 14, 11:10 UTCJul 14, 12:20 UTC1h 10m
2026-07-13 CAL5153 - Jul 13, 21:35 UTCJul 14, 08:15 UTC10h 40m
2026-07-13 CAL5154 - Jul 13, 06:55 UTCJul 13, 19:25 UTC12h 30m
2026-07-12 CAL5832 HKG → TPE Jul 12, 17:50 UTCJul 12, 19:05 UTC1h 15m
2026-07-12 CAL5831 TPE → HKG Jul 12, 14:25 UTCJul 12, 15:40 UTC1h 15m
2026-07-12 CAL5165 - Jul 12, 10:15 UTCJul 12, 10:50 UTC35m
2026-07-12 CAL5165 - Jul 12, 08:35 UTCJul 12, 09:10 UTC35m
2026-07-11 CAL5165 - Jul 11, 11:35 UTCJul 11, 22:55 UTC11h 20m
2026-07-10 CAL5166 - Jul 10, 15:45 UTCJul 11, 02:40 UTC10h 56m
2026-07-10 CAL5166 - Jul 10, 14:05 UTCJul 10, 14:15 UTC10m
2026-07-10 CAL5313 - Jul 10, 11:15 UTCJul 10, 11:40 UTC25m
2026-07-10 CAL5313 - Jul 10, 09:20 UTCJul 10, 10:00 UTC40m
2026-07-09 CAL5313 - Jul 9, 17:50 UTCJul 10, 05:55 UTC12h 5m
2026-07-09 CAL5314 - Jul 9, 04:20 UTCJul 9, 15:45 UTC11h 25m
2026-07-08 CAL5314 - Jul 8, 23:50 UTCJul 9, 02:10 UTC2h 20m
2026-07-08 CAL5836 - Jul 8, 19:25 UTCJul 8, 20:45 UTC1h 20m
2026-07-08 CAL5835 TPE → HKG Jul 8, 15:35 UTCJul 8, 16:55 UTC1h 20m
2026-07-08 CAL5165 KIX → TPE Jul 8, 08:30 UTCJul 8, 10:50 UTC2h 20m
2026-07-07 CAL5165 - Jul 7, 18:40 UTCJul 8, 06:35 UTC11h 55m
2026-07-07 CAL5166 - Jul 7, 04:45 UTCJul 7, 15:10 UTC10h 25m
2026-07-07 CAL5166 - Jul 7, 03:15 UTCJul 7, 03:35 UTC20m
2026-07-06 CAL5381 - Jul 6, 22:40 UTCJul 6, 23:10 UTC30m
2026-07-06 CAL5381 - Jul 6, 11:45 UTCJul 6, 21:35 UTC9h 50m
2026-07-06 CAL5381 - Jul 6, 03:50 UTCJul 6, 09:25 UTC5h 35m
2026-07-06 CAL5382 - Jul 6, 00:45 UTCJul 6, 01:45 UTC1h 0m
2026-07-05 CAL5382 - Jul 5, 21:15 UTCJul 6, 00:40 UTC3h 25m
2026-07-05 CAL5382 - Jul 5, 07:25 UTCJul 5, 19:15 UTC11h 50m
2026-07-05 CAL5872 - Jul 5, 01:35 UTCJul 5, 02:35 UTC1h 0m
2026-07-04 CAL5872 - Jul 4, 22:10 UTCJul 4, 22:20 UTC10m
2026-07-04 CAL5871 - Jul 4, 15:30 UTCJul 4, 16:30 UTC1h 0m
2026-07-04 CAL5824 HKG → TPE Jul 4, 11:50 UTCJul 4, 13:10 UTC1h 20m
2026-07-04 CAL5823 - Jul 4, 08:20 UTCJul 4, 09:00 UTC40m
2026-07-04 CAL5823 - Jul 4, 07:15 UTCJul 4, 07:35 UTC20m
2026-07-03 CAL5137 - Jul 3, 15:40 UTCJul 4, 04:40 UTC13h 0m
2026-07-03 CAL5138 - Jul 3, 01:10 UTCJul 3, 12:30 UTC11h 20m
2026-07-02 CAL5381 SEA → TPE Jul 2, 10:05 UTCJul 2, 22:00 UTC11h 55m
2026-07-02 CAL5381 - Jul 2, 06:20 UTCJul 2, 06:41 UTC21m
2026-07-02 CAL5381 - Jul 2, 02:20 UTCJul 2, 04:15 UTC1h 55m

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?
Yes. Mode-S 8990EB is currently airborne.
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, CAL5382, CAL5381, CAL5309, CAL5685.