sensors Mode-S transponder
899125
ICAO 24-bit transponder address · allocated to Taiwan
Currently assigned to B-18908 · AIRBUS A-350-900
- Hex
- 899125
- Octal
- 42310445
- Decimal
- 9,015,589
- Country
- TW
- Tail
- B-18908
- Type
- A359
- Flights observed
- 91
- Distinct callsigns
- 20
- Country
- TW
- Last broadcast
- 11h ago
Last known position
Country allocation
The ICAO 24-bit address 899125 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 |
|---|---|---|---|
| CAL054 | China Airlines | 8 | 2026-06-07 |
| CAL053 | China Airlines | 8 | 2026-06-06 |
| CAL761 | China Airlines | 7 | 2026-06-02 |
| CAL762 | China Airlines | 5 | 2026-06-02 |
| CAL074 | China Airlines | 4 | 2026-06-03 |
| CAL073 | China Airlines | 4 | 2026-06-02 |
| CAL052 | China Airlines | 4 | 2026-06-14 |
| CAL051 | - | 4 | 2026-06-13 |
| CAL754 | - | 3 | 2026-06-15 |
| CAL753 | - | 3 | 2026-06-15 |
| CAL504 | China Airlines | 3 | 2026-06-01 |
| CAL502 | China Airlines | 3 | 2026-06-01 |
| CAL501 | China Airlines | 3 | 2026-06-01 |
| CAL062 | China Airlines | 3 | 2026-05-23 |
| CAL061 | China Airlines | 3 | 2026-05-22 |
| CAL035 | China Airlines | 3 | 2026-05-25 |
| CAL784 | China Airlines | 2 | 2026-06-13 |
| CAL121 | China Airlines | 2 | 2026-05-05 |
| CAL082 | China Airlines | 2 | 2026-06-10 |
| CAL081 | China Airlines | 2 | 2026-06-10 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-15 | CAL754 | - | Jun 15, 09:20 UTC | Jun 15, 10:50 UTC | 1h 30m |
| 2026-06-15 | CAL753 | - | Jun 15, 00:35 UTC | Jun 15, 03:55 UTC | 3h 20m |
| 2026-06-14 | CAL052 | SYD → TPE | Jun 14, 12:20 UTC | Jun 14, 21:20 UTC | 9h 0m |
| 2026-06-13 | CAL051 | - | Jun 13, 15:55 UTC | Jun 14, 00:35 UTC | 8h 40m |
| 2026-06-13 | CAL784 | SGN → TPE | Jun 13, 06:00 UTC | Jun 13, 14:10 UTC | 8h 10m |
| 2026-06-12 | CAL023 | ONT → TPE | Jun 12, 07:15 UTC | Jun 12, 21:10 UTC | 13h 55m |
| 2026-06-11 | CAL024 | - | Jun 11, 15:00 UTC | Jun 12, 00:40 UTC | 9h 41m |
| 2026-06-11 | CAL024 | TPE → ONT | Jun 11, 13:35 UTC | Jun 11, 13:55 UTC | 20m |
| 2026-06-10 | CAL082 | LHR → TPE | Jun 10, 20:50 UTC | Jun 11, 09:40 UTC | 12h 50m |
| 2026-06-10 | CAL081 | TPE → LHR | Jun 10, 01:10 UTC | Jun 10, 15:45 UTC | 14h 35m |
| 2026-06-09 | CAL064 | VIE → TPE | Jun 9, 09:40 UTC | Jun 9, 20:55 UTC | 11h 15m |
| 2026-06-08 | CAL063 | TPE → VIE | Jun 8, 16:45 UTC | Jun 9, 05:35 UTC | 12h 50m |
| 2026-06-07 | CAL054 | BNE → TPE | Jun 7, 20:50 UTC | Jun 7, 21:30 UTC | 40m |
| 2026-06-07 | CAL054 | BNE → TPE | Jun 7, 13:05 UTC | Jun 7, 14:35 UTC | 1h 30m |
| 2026-06-06 | CAL053 | TPE → BNE | Jun 6, 16:30 UTC | Jun 7, 00:19 UTC | 7h 50m |
| 2026-06-06 | CAL784 | SGN → TPE | Jun 6, 05:55 UTC | Jun 6, 14:09 UTC | 8h 15m |
| 2026-06-05 | CAL052 | SYD → TPE | Jun 5, 12:15 UTC | Jun 5, 21:05 UTC | 8h 50m |
| 2026-06-04 | CAL051 | TPE → SYD | Jun 4, 15:50 UTC | Jun 5, 00:25 UTC | 8h 35m |
| 2026-06-04 | CAL783 | TPE → SGN | Jun 4, 06:05 UTC | Jun 4, 13:50 UTC | 7h 45m |
| 2026-06-03 | CAL074 | AMS → TPE | Jun 3, 09:25 UTC | Jun 3, 21:50 UTC | 12h 25m |
| 2026-06-02 | CAL073 | TPE → AMS | Jun 2, 15:35 UTC | Jun 2, 21:25 UTC | 5h 50m |
| 2026-06-02 | CAL762 | CGK → TPE | Jun 2, 09:55 UTC | Jun 2, 13:05 UTC | 3h 10m |
| 2026-06-02 | CAL761 | TPE → CGK | Jun 2, 05:55 UTC | Jun 2, 06:15 UTC | 20m |
| 2026-06-02 | CAL761 | TPE → CGK | Jun 2, 01:35 UTC | Jun 2, 04:30 UTC | 2h 55m |
| 2026-06-01 | CAL504 | PVG → TPE | Jun 1, 08:45 UTC | Jun 1, 13:30 UTC | 4h 45m |
| 2026-06-01 | CAL502 | PVG → TPE | Jun 1, 05:30 UTC | Jun 1, 06:00 UTC | 30m |
| 2026-06-01 | CAL501 | TPE → PVG | Jun 1, 00:55 UTC | Jun 1, 01:05 UTC | 10m |
| 2026-05-31 | CAL052 | SYD → TPE | May 31, 12:20 UTC | May 31, 20:45 UTC | 8h 25m |
| 2026-05-30 | CAL051 | TPE → SYD | May 30, 15:55 UTC | May 31, 00:35 UTC | 8h 40m |
| 2026-05-30 | CAL754 | SIN → TPE | May 30, 09:10 UTC | May 30, 10:15 UTC | 1h 5m |
| 2026-05-30 | CAL753 | TPE → SIN | May 30, 00:20 UTC | May 30, 01:25 UTC | 1h 5m |
| 2026-05-29 | CAL074 | AMS → TPE | May 29, 09:25 UTC | May 29, 21:55 UTC | 12h 30m |
| 2026-05-28 | CAL073 | TPE → AMS | May 28, 15:05 UTC | May 29, 05:20 UTC | 14h 15m |
| 2026-05-28 | CAL153 | KIX → TPE | May 28, 05:35 UTC | May 28, 07:45 UTC | 2h 10m |
| 2026-05-28 | CAL152 | TPE → KIX | May 28, 01:20 UTC | May 28, 03:35 UTC | 2h 15m |
| 2026-05-27 | CAL074 | AMS → TPE | May 27, 09:35 UTC | May 27, 22:10 UTC | 12h 35m |
| 2026-05-26 | CAL073 | TPE → AMS | May 26, 15:05 UTC | May 27, 05:19 UTC | 14h 15m |
| 2026-05-26 | CAL502 | PVG → TPE | May 26, 01:24 UTC | May 26, 07:15 UTC | 5h 50m |
| 2026-05-25 | CAL035 | PHX → TPE | May 25, 06:35 UTC | May 25, 19:59 UTC | 13h 24m |
| 2026-05-24 | CAL036 | TPE → PHX | May 24, 10:00 UTC | May 24, 21:45 UTC | 11h 45m |
| 2026-05-23 | CAL062 | FRA → TPE | May 23, 09:40 UTC | May 23, 21:35 UTC | 11h 55m |
| 2026-05-22 | CAL061 | TPE → FRA | May 22, 15:25 UTC | May 23, 05:05 UTC | 13h 39m |
| 2026-05-22 | CAL762 | CGK → TPE | May 22, 10:00 UTC | May 22, 13:30 UTC | 3h 30m |
| 2026-05-22 | CAL762 | CGK → TPE | May 22, 08:10 UTC | May 22, 08:20 UTC | 10m |
| 2026-05-22 | CAL761 | TPE → CGK | May 22, 01:40 UTC | May 22, 04:40 UTC | 3h 0m |
| 2026-05-21 | CAL035 | PHX → TPE | May 21, 20:45 UTC | May 21, 21:10 UTC | 25m |
| 2026-05-21 | CAL035 | PHX → TPE | May 21, 07:05 UTC | May 21, 08:35 UTC | 1h 30m |
| 2026-05-20 | CAL036 | TPE → PHX | May 20, 09:50 UTC | May 20, 21:50 UTC | 12h 0m |
| 2026-05-19 | CAL781 | TPE → SGN | May 19, 23:35 UTC | May 20, 07:05 UTC | 7h 31m |
| 2026-05-19 | CAL021 | SEA → TPE | May 19, 20:25 UTC | May 19, 20:45 UTC | 20m |
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-18908 page for operator, model, and routing details .