Apparatus

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sensors Mode-S transponder

8990D4

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-16705 · BOEING 777-300ER

Hex
8990D4
Octal
42310324
Decimal
9,015,508
Country
TW
Tail
B-16705
Type
B77W
No current signal · last broadcast 8h ago
Flights observed
109
Distinct callsigns
20
Country
TW
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 8990D4.

Country allocation

The ICAO 24-bit address 8990D4 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
EVA027 EVA Air 11 2026-05-27
EVA028 EVA Air 9 2026-05-26
EVA016 EVA Air 9 2026-05-28
EVA015 EVA Air 7 2026-05-29
EVA228 EVA Air 6 2026-05-30
EVA227 EVA Air 6 2026-05-30
EVA867 EVA Air 4 2026-04-25
EVA216 EVA Air 4 2026-05-22
EVA215 EVA Air 4 2026-05-22
EVA212 EVA Air 4 2026-05-15
EVA211 EVA Air 4 2026-05-15
EVA012 EVA Air 4 2026-05-01
EVA218 EVA Air 3 2026-05-30
EVA217 EVA Air 3 2026-04-17
EVA159 EVA Air 3 2026-05-26
EVA011 EVA Air 3 2026-05-02
EVA005 - 3 2026-05-21
UIA187 Uni Air 2 2026-04-30
EVA868 EVA Air 2 2026-04-25
EVA711 EVA Air 2 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 EVA185 OKA → TPE Jun 2, 08:45 UTCJun 2, 12:55 UTC4h 10m
2026-06-02 EVA711 PVG → TPE Jun 2, 02:15 UTCJun 2, 06:40 UTC4h 25m
2026-06-01 EVA072 MUC → TPE Jun 1, 10:35 UTCJun 1, 22:10 UTC11h 35m
2026-05-31 EVA071 TPE → MUC May 31, 16:05 UTCJun 1, 05:10 UTC13h 5m
2026-05-30 EVA218 KUL → TPE May 30, 22:45 UTCMay 31, 09:40 UTC10h 55m
2026-05-30 EVA228 KUL → TPE May 30, 07:45 UTCMay 30, 11:45 UTC4h 0m
2026-05-30 EVA227 TPE → KUL May 30, 01:55 UTCMay 30, 06:00 UTC4h 5m
2026-05-29 EVA015 LAX → TPE May 29, 08:10 UTCMay 29, 21:35 UTC13h 26m
2026-05-28 EVA016 TPE → LAX May 28, 18:05 UTCMay 29, 03:50 UTC9h 45m
2026-05-28 EVA016 TPE → LAX May 28, 16:20 UTCMay 28, 16:35 UTC15m
2026-05-27 EVA027 SFO → TPE May 27, 20:20 UTCMay 27, 20:50 UTC30m
2026-05-27 EVA027 SFO → TPE May 27, 08:05 UTCMay 27, 19:10 UTC11h 5m
2026-05-26 EVA028 TPE → SFO May 26, 18:10 UTCMay 27, 03:20 UTC9h 10m
2026-05-26 EVA028 TPE → SFO May 26, 16:10 UTCMay 26, 16:24 UTC15m
2026-05-26 EVA159 ICN → TPE May 26, 11:30 UTCMay 26, 13:29 UTC2h 0m
2026-05-26 EVA160 TPE → ICN May 26, 07:34 UTCMay 26, 09:29 UTC1h 55m
2026-05-25 EVA228 KUL → TPE May 25, 08:10 UTCMay 25, 12:20 UTC4h 10m
2026-05-25 EVA227 TPE → KUL May 25, 02:15 UTCMay 25, 06:20 UTC4h 5m
2026-05-24 EVA027 SFO → TPE May 24, 20:30 UTCMay 24, 20:55 UTC25m
2026-05-24 EVA027 SFO → TPE May 24, 08:10 UTCMay 24, 19:15 UTC11h 5m
2026-05-23 EVA028 TPE → SFO May 23, 16:00 UTCMay 24, 02:50 UTC10h 51m
2026-05-22 EVA216 SIN → TPE May 22, 07:45 UTCMay 22, 11:45 UTC4h 0m
2026-05-22 EVA215 TPE → SIN May 22, 05:40 UTCMay 22, 05:50 UTC10m
2026-05-22 EVA215 TPE → SIN May 22, 02:00 UTCMay 22, 03:10 UTC1h 10m
2026-05-21 EVA005 - May 21, 08:25 UTCMay 21, 08:50 UTC25m
2026-05-20 EVA005 - May 20, 19:30 UTCMay 20, 20:30 UTC1h 0m
2026-05-20 EVA006 - May 20, 02:40 UTCMay 20, 13:55 UTC11h 16m
2026-05-19 EVA027 SFO → TPE May 19, 08:35 UTCMay 19, 21:15 UTC12h 40m
2026-05-18 EVA028 TPE → SFO May 18, 16:00 UTCMay 19, 03:00 UTC10h 59m
2026-05-18 EVA228 KUL → TPE May 18, 07:45 UTCMay 18, 11:55 UTC4h 10m
2026-05-18 EVA227 TPE → KUL May 18, 01:45 UTCMay 18, 05:45 UTC4h 0m
2026-05-16 EVA005 - May 16, 19:10 UTCMay 17, 08:25 UTC13h 15m
2026-05-16 EVA006 - May 16, 02:45 UTCMay 16, 14:11 UTC11h 26m
2026-05-15 EVA382 SGN → TPE May 15, 12:30 UTCMay 15, 22:10 UTC9h 39m
2026-05-15 EVA212 BKK → TPE May 15, 06:00 UTCMay 15, 09:30 UTC3h 30m
2026-05-15 EVA211 TPE → BKK May 15, 00:55 UTCMay 15, 04:05 UTC3h 10m
2026-05-14 EVA015 LAX → TPE May 14, 20:30 UTCMay 14, 21:10 UTC40m
2026-05-14 EVA015 LAX → TPE May 14, 08:05 UTCMay 14, 19:10 UTC11h 5m
2026-05-13 EVA016 TPE → LAX May 13, 16:30 UTCMay 14, 03:30 UTC11h 0m
2026-05-12 EVA027 SFO → TPE May 12, 08:15 UTCMay 12, 20:35 UTC12h 20m
2026-05-11 EVA028 TPE → SFO May 11, 15:55 UTCMay 11, 18:30 UTC2h 36m
2026-05-11 EVA228 KUL → TPE May 11, 07:50 UTCMay 11, 11:55 UTC4h 5m
2026-05-11 EVA227 TPE → KUL May 11, 02:00 UTCMay 11, 06:00 UTC4h 0m
2026-05-10 EVA015 LAX → TPE May 10, 08:05 UTCMay 10, 21:30 UTC13h 25m
2026-05-09 EVA016 TPE → LAX May 9, 16:20 UTCMay 10, 03:10 UTC10h 50m
2026-05-09 EVA212 BKK → TPE May 9, 06:25 UTCMay 9, 09:40 UTC3h 15m
2026-05-09 EVA211 TPE → BKK May 9, 01:05 UTCMay 9, 04:30 UTC3h 25m
2026-05-08 EVA027 SFO → TPE May 8, 20:50 UTCMay 8, 21:15 UTC25m
2026-05-08 EVA027 SFO → TPE May 8, 08:09 UTCMay 8, 20:15 UTC12h 5m
2026-05-07 EVA028 TPE → SFO May 7, 16:10 UTCMay 8, 03:14 UTC11h 5m

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-16705 page for operator, model, and routing details .

Mode-S 8990D4 frequently asked

What is Mode-S code 8990D4?
8990D4 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-16705.
Where is Mode-S 8990D4 registered?
Mode-S code 8990D4 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8990D4 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8990D4, octal 42310324, decimal 9,015,508.
What flights does 8990D4 operate?
Mode-S 8990D4 has broadcast 20 distinct callsigns, including EVA027, EVA028, EVA016, EVA015, EVA228.