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sensors Mode-S transponder

899057

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-50021 · AIRBUS A-320neo

Hex
899057
Octal
42310127
Decimal
9,015,383
Country
TW
Tail
B-50021
Type
A20N
Broadcasting now · callsign TTW270 · 35,025 ft
Flights observed
408
Distinct callsigns
20
Country
TW
Last broadcast
Jul 26, 11:00 UTC

Current position

899057 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 899057 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
TTW241 - 16 2026-07-18
TTW235 Tigerair Taiwan 16 2026-07-22
TTW602 - 15 2026-07-19
TTW215 - 15 2026-06-22
TTW603 Tigerair Taiwan 14 2026-07-19
TTW752 Tigerair Taiwan 12 2026-07-24
TTW240 Tigerair Taiwan 12 2026-07-18
TTW213 Tigerair Taiwan 12 2026-07-22
TTW237 Tigerair Taiwan 11 2026-07-19
TTW234 Tigerair Taiwan 11 2026-07-21
TTW214 - 11 2026-06-22
TTW753 Tigerair Taiwan 10 2026-07-24
TTW607 - 10 2026-07-09
TTW737 Tigerair Taiwan 9 2026-07-24
TTW736 Tigerair Taiwan 9 2026-07-23
TTW552 - 8 2026-07-07
TTW721 - 7 2026-06-29
TTW720 - 7 2026-06-29
TTW606 - 7 2026-07-09
TTW585 - 7 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TTW253 KMQ → TPE Jul 26, 08:20 UTCJul 26, 10:55 UTC2h 35m
2026-07-26 TTW252 TPE → KMQ Jul 26, 04:35 UTCJul 26, 07:00 UTC2h 26m
2026-07-26 TTW231 OKA → TPE Jul 26, 01:25 UTCJul 26, 02:35 UTC1h 10m
2026-07-25 TTW230 TPE → OKA Jul 25, 23:00 UTCJul 25, 23:25 UTC25m
2026-07-25 TTW259 HNA → TPE Jul 25, 12:40 UTCJul 25, 12:55 UTC15m
2026-07-25 TTW259 HNA → TPE Jul 25, 10:00 UTCJul 25, 11:20 UTC1h 20m
2026-07-25 TTW258 TPE → HNA Jul 25, 05:20 UTCJul 25, 08:10 UTC2h 50m
2026-07-25 TTW655 CJU → TPE Jul 25, 03:10 UTCJul 25, 03:35 UTC25m
2026-07-24 TTW654 TPE → CJU Jul 24, 23:05 UTCJul 24, 23:30 UTC25m
2026-07-24 TTW753 FKS → TPE Jul 24, 11:15 UTCJul 24, 11:45 UTC30m
2026-07-24 TTW753 FKS → TPE Jul 24, 08:40 UTCJul 24, 10:00 UTC1h 20m
2026-07-24 TTW752 TPE → FKS Jul 24, 06:00 UTCJul 24, 07:10 UTC1h 10m
2026-07-24 TTW752 TPE → FKS Jul 24, 04:25 UTCJul 24, 04:40 UTC15m
2026-07-24 TTW737 ISG → TPE Jul 24, 01:05 UTCJul 24, 01:35 UTC30m
2026-07-23 TTW736 TPE → ISG Jul 23, 23:05 UTCJul 23, 23:25 UTC20m
2026-07-23 TTW701 NRT → TPE Jul 23, 15:15 UTCJul 23, 15:45 UTC30m
2026-07-23 TTW701 NRT → TPE Jul 23, 12:35 UTCJul 23, 13:55 UTC1h 20m
2026-07-23 TTW700 TPE → NRT Jul 23, 08:05 UTCJul 23, 11:10 UTC3h 5m
2026-07-23 TTW201 NRT → TPE Jul 23, 06:15 UTCJul 23, 06:30 UTC15m
2026-07-23 TTW201 NRT → TPE Jul 23, 03:35 UTCJul 23, 04:55 UTC1h 20m
2026-07-22 TTW200 TPE → NRT Jul 22, 23:45 UTCJul 23, 02:00 UTC2h 15m
2026-07-22 TTW200 TPE → NRT Jul 22, 22:55 UTCJul 22, 23:05 UTC10m
2026-07-22 TTW213 KIX → TPE Jul 22, 14:35 UTCJul 22, 14:55 UTC20m
2026-07-22 TTW213 KIX → TPE Jul 22, 12:35 UTCJul 22, 13:15 UTC40m
2026-07-22 TTW235 CTS → TPE Jul 22, 03:35 UTCJul 22, 05:25 UTC1h 50m
2026-07-21 TTW234 TPE → CTS Jul 21, 22:50 UTCJul 22, 02:20 UTC3h 30m
2026-07-21 TTW255 SDJ → TPE Jul 21, 13:20 UTCJul 21, 13:40 UTC20m
2026-07-21 TTW255 SDJ → TPE Jul 21, 10:35 UTCJul 21, 12:50 UTC2h 15m
2026-07-21 TTW254 TPE → SDJ Jul 21, 06:10 UTCJul 21, 08:55 UTC2h 45m
2026-07-21 TTW655 CJU → TPE Jul 21, 03:00 UTCJul 21, 03:15 UTC15m
2026-07-20 TTW654 - Jul 20, 22:50 UTCJul 20, 23:05 UTC15m
2026-07-20 TTW551 TPE → TPE Jul 20, 09:05 UTCJul 20, 15:00 UTC5h 55m
2026-07-20 TTW211 KIX → TPE Jul 20, 04:55 UTCJul 20, 05:20 UTC25m
2026-07-20 TTW211 KIX → TPE Jul 20, 03:00 UTCJul 20, 03:45 UTC45m
2026-07-19 TTW210 TPE → KIX Jul 19, 23:05 UTCJul 20, 01:20 UTC2h 15m
2026-07-19 TTW603 ICN → TPE Jul 19, 16:00 UTCJul 19, 18:05 UTC2h 5m
2026-07-19 TTW602 TPE → ICN Jul 19, 12:40 UTCJul 19, 14:45 UTC2h 5m
2026-07-19 TTW237 HKD → TPE Jul 19, 07:00 UTCJul 19, 07:25 UTC25m
2026-07-19 TTW237 HKD → TPE Jul 19, 04:00 UTCJul 19, 06:00 UTC2h 0m
2026-07-18 TTW236 TPE → HKD Jul 18, 23:15 UTCJul 19, 02:40 UTC3h 25m
2026-07-18 TTW504 - Jul 18, 06:10 UTCJul 18, 15:20 UTC9h 10m
2026-07-18 TTW241 - Jul 18, 04:05 UTCJul 18, 04:20 UTC15m
2026-07-18 TTW241 - Jul 18, 02:35 UTCJul 18, 02:50 UTC16m
2026-07-18 TTW240 TPE → FUK Jul 18, 00:39 UTCJul 18, 01:00 UTC20m
2026-07-17 TTW240 TPE → FUK Jul 17, 23:14 UTCJul 17, 23:25 UTC10m
2026-07-17 TTW213 KIX → TPE Jul 17, 12:45 UTCJul 17, 15:20 UTC2h 35m
2026-07-17 TTW212 TPE → KIX Jul 17, 08:45 UTCJul 17, 11:15 UTC2h 30m
2026-07-17 TTW211 KIX → TPE Jul 17, 02:59 UTCJul 17, 05:15 UTC2h 15m
2026-07-16 TTW210 TPE → KIX Jul 16, 23:15 UTCJul 17, 01:29 UTC2h 15m
2026-07-16 TTW715 - Jul 16, 11:25 UTCJul 16, 11:34 UTC10m

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-50021 page for operator, model, and routing details .

Mode-S 899057 frequently asked

What is Mode-S code 899057?
899057 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-50021.
Where is Mode-S 899057 registered?
Mode-S code 899057 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899057 broadcasting right now?
Yes. Mode-S 899057 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899057, octal 42310127, decimal 9,015,383.
What flights does 899057 operate?
Mode-S 899057 has broadcast 20 distinct callsigns, including TTW241, TTW235, TTW602, TTW215, TTW603.