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 Jul 26, 12:25 UTC
Flights observed
233
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 12:25 UTC

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 25 2026-07-24
EVA028 EVA Air 20 2026-07-23
EVA211 EVA Air 18 2026-07-19
EVA212 EVA Air 16 2026-07-19
EVA016 - 16 2026-07-15
EVA015 - 15 2026-07-16
EVA011 EVA Air 14 2026-07-18
EVA216 EVA Air 11 2026-07-23
EVA215 EVA Air 11 2026-07-23
EVA012 - 11 2026-07-17
EVA867 EVA Air 7 2026-07-25
EVA228 - 7 2026-07-06
EVA227 - 7 2026-07-06
EVA218 - 6 2026-07-03
EVA217 EVA Air 6 2026-07-02
EVA868 EVA Air 5 2026-07-25
EVA159 - 5 2026-07-15
EVA160 - 3 2026-07-15
EVA005 - 3 2026-05-21
UIA187 Uni Air 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EVA708 CAN → TPE Jul 26, 10:50 UTCJul 26, 12:25 UTC1h 35m
2026-07-26 EVA707 TPE → CAN Jul 26, 07:20 UTCJul 26, 07:55 UTC35m
2026-07-25 EVA868 HKG → TPE Jul 25, 06:00 UTCJul 25, 07:25 UTC1h 25m
2026-07-25 EVA867 TPE → HKG Jul 25, 02:30 UTCJul 25, 03:45 UTC1h 15m
2026-07-24 EVA027 SFO → TPE Jul 24, 20:05 UTCJul 24, 20:25 UTC20m
2026-07-24 EVA027 SFO → TPE Jul 24, 08:40 UTCJul 24, 19:35 UTC10h 55m
2026-07-23 EVA028 TPE → SFO Jul 23, 18:30 UTCJul 24, 05:50 UTC11h 20m
2026-07-23 EVA216 SIN → TPE Jul 23, 07:50 UTCJul 23, 11:50 UTC4h 0m
2026-07-23 EVA215 TPE → SIN Jul 23, 02:10 UTCJul 23, 06:00 UTC3h 50m
2026-07-22 EVA027 SFO → TPE Jul 22, 19:55 UTCJul 22, 20:15 UTC20m
2026-07-22 EVA027 SFO → TPE Jul 22, 17:10 UTCJul 22, 18:40 UTC1h 30m
2026-07-21 EVA028 TPE → SFO Jul 21, 17:40 UTCJul 22, 03:35 UTC9h 55m
2026-07-21 EVA028 TPE → SFO Jul 21, 16:05 UTCJul 21, 16:20 UTC15m
2026-07-21 EVA216 SIN → TPE Jul 21, 07:45 UTCJul 21, 12:00 UTC4h 15m
2026-07-21 EVA215 TPE → SIN Jul 21, 02:00 UTCJul 21, 05:55 UTC3h 55m
2026-07-20 EVA027 SFO → TPE Jul 20, 08:20 UTCJul 20, 20:25 UTC12h 5m
2026-07-19 EVA028 TPE → SFO Jul 19, 16:05 UTCJul 20, 03:45 UTC11h 40m
2026-07-19 EVA212 BKK → TPE Jul 19, 06:05 UTCJul 19, 09:35 UTC3h 30m
2026-07-19 EVA211 TPE → BKK Jul 19, 04:00 UTCJul 19, 04:20 UTC20m
2026-07-19 EVA211 TPE → BKK Jul 19, 01:05 UTCJul 19, 01:55 UTC50m
2026-07-18 EVA011 LAX → TPE Jul 18, 20:15 UTCJul 18, 20:35 UTC20m
2026-07-18 EVA011 LAX → TPE Jul 18, 08:10 UTCJul 18, 19:05 UTC10h 55m
2026-07-17 EVA012 TPE → LAX Jul 17, 12:19 UTCJul 18, 00:45 UTC12h 25m
2026-07-17 EVA212 - Jul 17, 08:35 UTCJul 17, 09:45 UTC1h 10m
2026-07-17 EVA212 - Jul 17, 06:25 UTCJul 17, 06:35 UTC10m
2026-07-17 EVA211 - Jul 17, 03:59 UTCJul 17, 04:25 UTC25m
2026-07-17 EVA211 - Jul 17, 01:20 UTCJul 17, 02:10 UTC50m
2026-07-16 EVA015 LAX → TPE Jul 16, 08:55 UTCJul 16, 21:10 UTC12h 15m
2026-07-15 EVA016 - Jul 15, 16:15 UTCJul 16, 04:20 UTC12h 5m
2026-07-15 EVA159 - Jul 15, 13:05 UTCJul 15, 13:40 UTC35m
2026-07-15 EVA159 - Jul 15, 11:30 UTCJul 15, 12:05 UTC35m
2026-07-15 EVA160 TPE → ICN Jul 15, 07:35 UTCJul 15, 09:35 UTC2h 0m
2026-07-14 EVA212 - Jul 14, 06:40 UTCJul 14, 10:05 UTC3h 25m
2026-07-14 EVA211 - Jul 14, 04:20 UTCJul 14, 04:40 UTC20m
2026-07-14 EVA211 - Jul 14, 01:30 UTCJul 14, 02:25 UTC55m
2026-07-13 EVA027 SFO → TPE Jul 13, 08:35 UTCJul 13, 20:45 UTC12h 10m
2026-07-12 EVA028 - Jul 12, 16:05 UTCJul 13, 03:40 UTC11h 35m
2026-07-12 EVA708 - Jul 12, 05:55 UTCJul 12, 07:35 UTC1h 40m
2026-07-12 EVA707 - Jul 12, 02:25 UTCJul 12, 03:30 UTC1h 5m
2026-07-11 EVA015 - Jul 11, 22:01 UTCJul 11, 22:20 UTC20m
2026-07-11 EVA015 - Jul 11, 09:55 UTCJul 11, 20:40 UTC10h 45m
2026-07-09 EVA016 - Jul 9, 17:10 UTCJul 10, 04:20 UTC11h 10m
2026-07-09 EVA016 - Jul 9, 16:25 UTCJul 9, 16:40 UTC15m
2026-07-09 EVA212 - Jul 9, 06:30 UTCJul 9, 10:10 UTC3h 40m
2026-07-09 EVA211 - Jul 9, 01:20 UTCJul 9, 04:40 UTC3h 20m
2026-07-08 EVA216 - Jul 8, 11:25 UTCJul 8, 12:20 UTC55m
2026-07-08 EVA216 - Jul 8, 07:50 UTCJul 8, 08:20 UTC30m
2026-07-08 EVA215 - Jul 8, 02:00 UTCJul 8, 05:55 UTC3h 55m
2026-07-07 EVA027 - Jul 7, 20:40 UTCJul 7, 21:10 UTC30m
2026-07-07 EVA027 - Jul 7, 08:35 UTCJul 7, 19:30 UTC10h 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-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 Jul 26, 12:25 UTC.
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, EVA211, EVA212, EVA016.