sensors Mode-S transponder

8990D5

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-16706 · BOEING 777-300ER

Hex
8990D5
Octal
42310325
Decimal
9,015,509
Country
TW
Tail
B-16706
Type
B77W
No current signal · last broadcast 20h ago
Flights observed
8
Distinct callsigns
4
Country
TW
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 8990D5.

Country allocation

The ICAO 24-bit address 8990D5 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 4 distinct

Callsign Airline Flights Last seen
EVA027 EVA Air 4 2026-04-13
EVA028 EVA Air 2 2026-04-13
EVA871 - 1 2026-04-14
EVA711 - 1 2026-04-14

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 EVA871 - Apr 14, 09:25 UTCApr 14, 10:40 UTC1h 15m
2026-04-14 EVA711 - Apr 14, 07:10 UTCApr 14, 07:35 UTC25m
2026-04-13 EVA027 SFO → TPE Apr 13, 20:35 UTCApr 13, 20:55 UTC20m
2026-04-13 EVA027 SFO → TPE Apr 13, 17:25 UTCApr 13, 18:45 UTC1h 20m
2026-04-13 EVA027 SFO → TPE Apr 13, 07:55 UTCApr 13, 08:05 UTC10m
2026-04-13 EVA027 SFO → TPE Apr 13, 07:40 UTCApr 13, 08:05 UTC25m
2026-04-13 EVA028 TPE → SFO Apr 13, 01:55 UTCApr 13, 03:10 UTC1h 15m
2026-04-12 EVA028 TPE → SFO Apr 12, 18:00 UTCApr 12, 18:45 UTC45m

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-16706 page for operator, model, and routing details .

Mode-S 8990D5 frequently asked

What is Mode-S code 8990D5?
8990D5 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-16706.
Where is Mode-S 8990D5 registered?
Mode-S code 8990D5 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990D5 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990D5, octal 42310325, decimal 9,015,509.
What flights does 8990D5 operate?
Mode-S 8990D5 has broadcast 4 distinct callsigns, including EVA027, EVA028, EVA871, EVA711.