sensors Mode-S transponder
899020
ICAO 24-bit transponder address · allocated to Taiwan
Currently assigned to B-18007 · BOEING 777-300ER
- Hex
- 899020
- Octal
- 42310040
- Decimal
- 9,015,328
- Country
- TW
- Tail
- B-18007
- Type
- B77W
- Flights observed
- 122
- Distinct callsigns
- 18
- Country
- TW
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 899020 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CAL003 | - | 17 | 2026-05-29 |
| CAL024 | China Airlines | 16 | 2026-05-26 |
| CAL023 | China Airlines | 16 | 2026-05-27 |
| CAL004 | - | 14 | 2026-05-28 |
| CAL722 | China Airlines | 11 | 2026-05-20 |
| CAL721 | China Airlines | 11 | 2026-05-20 |
| CAL008 | - | 7 | 2026-05-24 |
| CAL007 | - | 7 | 2026-05-25 |
| CAL772 | China Airlines | 5 | 2026-05-28 |
| CAL031 | China Airlines | 4 | 2026-05-08 |
| CAL782 | China Airlines | 3 | 2026-05-25 |
| CAL784 | China Airlines | 2 | 2026-04-19 |
| CAL781 | China Airlines | 2 | 2026-05-09 |
| CAL153 | China Airlines | 2 | 2026-04-14 |
| CAL032 | China Airlines | 2 | 2026-05-07 |
| CAL783 | China Airlines | 1 | 2026-04-19 |
| CAL105 | China Airlines | 1 | 2026-05-22 |
| CAL104 | China Airlines | 1 | 2026-05-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CAL003 | SFO → TPE | May 29, 08:50 UTC | May 29, 21:45 UTC | 12h 55m |
| 2026-05-28 | CAL004 | - | May 28, 17:45 UTC | May 29, 03:25 UTC | 9h 40m |
| 2026-05-28 | CAL004 | - | May 28, 16:15 UTC | May 28, 16:30 UTC | 15m |
| 2026-05-28 | CAL772 | DPS → TPE | May 28, 01:35 UTC | May 28, 12:45 UTC | 11h 10m |
| 2026-05-27 | CAL023 | ONT → TPE | May 27, 07:35 UTC | May 27, 21:10 UTC | 13h 35m |
| 2026-05-26 | CAL024 | TPE → ONT | May 26, 15:29 UTC | May 27, 01:14 UTC | 9h 45m |
| 2026-05-26 | CAL024 | TPE → ONT | May 26, 13:45 UTC | May 26, 14:00 UTC | 15m |
| 2026-05-25 | CAL782 | SGN → TPE | May 25, 23:30 UTC | May 26, 07:10 UTC | 7h 40m |
| 2026-05-25 | CAL007 | - | May 25, 20:30 UTC | May 25, 20:55 UTC | 25m |
| 2026-05-25 | CAL007 | - | May 25, 07:35 UTC | May 25, 19:20 UTC | 11h 45m |
| 2026-05-24 | CAL008 | - | May 24, 16:05 UTC | May 25, 03:30 UTC | 11h 25m |
| 2026-05-24 | CAL772 | DPS → TPE | May 24, 01:25 UTC | May 24, 12:35 UTC | 11h 10m |
| 2026-05-23 | CAL003 | - | May 23, 21:00 UTC | May 23, 21:25 UTC | 25m |
| 2026-05-23 | CAL003 | - | May 23, 08:25 UTC | May 23, 19:35 UTC | 11h 10m |
| 2026-05-22 | CAL004 | - | May 22, 15:50 UTC | May 23, 02:35 UTC | 10h 45m |
| 2026-05-22 | CAL105 | NRT → TPE | May 22, 10:30 UTC | May 22, 13:45 UTC | 3h 15m |
| 2026-05-22 | CAL104 | TPE → NRT | May 22, 04:55 UTC | May 22, 07:40 UTC | 2h 45m |
| 2026-05-21 | CAL023 | ONT → TPE | May 21, 20:30 UTC | May 21, 20:55 UTC | 25m |
| 2026-05-21 | CAL023 | ONT → TPE | May 21, 07:25 UTC | May 21, 08:20 UTC | 55m |
| 2026-05-20 | CAL024 | TPE → ONT | May 20, 15:15 UTC | May 21, 00:45 UTC | 9h 30m |
| 2026-05-20 | CAL024 | TPE → ONT | May 20, 13:30 UTC | May 20, 13:45 UTC | 15m |
| 2026-05-20 | CAL722 | KUL → TPE | May 20, 06:55 UTC | May 20, 11:15 UTC | 4h 20m |
| 2026-05-20 | CAL721 | TPE → KUL | May 20, 01:10 UTC | May 20, 05:10 UTC | 4h 1m |
| 2026-05-19 | CAL023 | ONT → TPE | May 19, 20:55 UTC | May 19, 21:10 UTC | 15m |
| 2026-05-19 | CAL023 | ONT → TPE | May 19, 07:30 UTC | May 19, 20:20 UTC | 12h 50m |
| 2026-05-18 | CAL024 | TPE → ONT | May 18, 13:25 UTC | May 19, 01:00 UTC | 11h 34m |
| 2026-05-17 | CAL003 | - | May 17, 08:40 UTC | May 17, 21:05 UTC | 12h 25m |
| 2026-05-16 | CAL004 | - | May 16, 16:00 UTC | May 17, 02:55 UTC | 10h 55m |
| 2026-05-15 | CAL007 | - | May 15, 20:20 UTC | May 15, 20:45 UTC | 25m |
| 2026-05-15 | CAL007 | - | May 15, 07:35 UTC | May 15, 19:00 UTC | 11h 25m |
| 2026-05-14 | CAL008 | - | May 14, 16:30 UTC | May 15, 03:25 UTC | 10h 55m |
| 2026-05-14 | CAL722 | KUL → TPE | May 14, 07:15 UTC | May 14, 11:25 UTC | 4h 10m |
| 2026-05-14 | CAL721 | TPE → KUL | May 14, 01:10 UTC | May 14, 05:10 UTC | 4h 0m |
| 2026-05-13 | CAL003 | - | May 13, 08:30 UTC | May 13, 21:40 UTC | 13h 10m |
| 2026-05-12 | CAL004 | - | May 12, 16:10 UTC | May 13, 02:45 UTC | 10h 35m |
| 2026-05-12 | CAL722 | KUL → TPE | May 12, 07:05 UTC | May 12, 11:15 UTC | 4h 10m |
| 2026-05-12 | CAL721 | TPE → KUL | May 12, 04:35 UTC | May 12, 05:10 UTC | 35m |
| 2026-05-11 | CAL772 | DPS → TPE | May 11, 01:25 UTC | May 11, 12:55 UTC | 11h 30m |
| 2026-05-10 | CAL003 | - | May 10, 21:10 UTC | May 10, 21:35 UTC | 25m |
| 2026-05-10 | CAL003 | - | May 10, 08:40 UTC | May 10, 19:45 UTC | 11h 5m |
| 2026-05-09 | CAL004 | - | May 9, 16:15 UTC | May 10, 02:39 UTC | 10h 25m |
| 2026-05-09 | CAL781 | TPE → SGN | May 9, 00:05 UTC | May 9, 07:15 UTC | 7h 10m |
| 2026-05-08 | CAL031 | YVR → TPE | May 8, 21:25 UTC | May 8, 21:55 UTC | 30m |
| 2026-05-08 | CAL031 | YVR → TPE | May 8, 09:14 UTC | May 8, 20:45 UTC | 11h 30m |
| 2026-05-07 | CAL032 | TPE → YVR | May 7, 15:50 UTC | May 8, 02:24 UTC | 10h 35m |
| 2026-05-07 | CAL722 | KUL → TPE | May 7, 07:10 UTC | May 7, 11:20 UTC | 4h 10m |
| 2026-05-07 | CAL721 | TPE → KUL | May 7, 01:05 UTC | May 7, 05:10 UTC | 4h 5m |
| 2026-05-06 | CAL023 | ONT → TPE | May 6, 20:05 UTC | May 6, 20:30 UTC | 25m |
| 2026-05-06 | CAL023 | ONT → TPE | May 6, 07:10 UTC | May 6, 18:45 UTC | 11h 34m |
| 2026-05-05 | CAL024 | TPE → ONT | May 5, 14:50 UTC | May 6, 00:50 UTC | 10h 0m |
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-18007 page for operator, model, and routing details .