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sensors Mode-S transponder

899139

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-17887 · BOEING 787-9 Dreamliner

Hex
899139
Octal
42310471
Decimal
9,015,609
Country
TW
Tail
B-17887
Type
B789
Broadcasting now · callsign EVA237 · 34,000 ft
Flights observed
8
Distinct callsigns
2
Country
TW
Last broadcast
15h ago

Current position

899139 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 899139 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 2 distinct

Callsign Airline Flights Last seen
EVA049 EVA Air 5 2026-04-14
EVA050 EVA Air 3 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 EVA049 DFW → TPE Apr 14, 09:10 UTCApr 14, 11:05 UTC1h 55m
2026-04-14 EVA049 DFW → TPE Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 EVA049 DFW → TPE Apr 14, 05:15 UTCApr 14, 07:10 UTC1h 55m
2026-04-13 EVA050 TPE → DFW Apr 13, 21:05 UTCApr 13, 23:40 UTC2h 35m
2026-04-13 EVA050 TPE → DFW Apr 13, 13:30 UTCApr 13, 14:10 UTC40m
2026-04-13 EVA050 TPE → DFW Apr 13, 11:35 UTCApr 13, 11:50 UTC15m
2026-04-12 EVA049 DFW → TPE Apr 12, 19:50 UTCApr 12, 20:05 UTC15m
2026-04-12 EVA049 DFW → TPE Apr 12, 17:15 UTCApr 12, 18:05 UTC50m

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-17887 page for operator, model, and routing details .

Mode-S 899139 frequently asked

What is Mode-S code 899139?
899139 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-17887.
Where is Mode-S 899139 registered?
Mode-S code 899139 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899139 broadcasting right now?
Yes. Mode-S 899139 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899139, octal 42310471, decimal 9,015,609.
What flights does 899139 operate?
Mode-S 899139 has broadcast 2 distinct callsigns, including EVA049, EVA050.