sensors Mode-S transponder
899017
ICAO 24-bit transponder address · allocated to Taiwan
Currently assigned to B-18780 · BOEING 777-200LR
- Hex
- 899017
- Octal
- 42310027
- Decimal
- 9,015,319
- Country
- TW
- Tail
- B-18780
- Type
- B77L
- Flights observed
- 231
- Distinct callsigns
- 20
- Country
- TW
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 899017 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 |
|---|---|---|---|
| CAL5663 | - | 13 | 2026-07-09 |
| CAL5310 | - | 12 | 2026-06-21 |
| CAL5309 | - | 10 | 2026-06-22 |
| CAL5381 | China Airlines | 9 | 2026-05-28 |
| CAL5153 | - | 9 | 2026-06-30 |
| CAL5382 | China Airlines | 8 | 2026-05-27 |
| CAL5162 | - | 8 | 2026-06-26 |
| CAL5236 | China Airlines | 7 | 2026-05-25 |
| CAL5161 | - | 7 | 2026-06-27 |
| CAL5686 | - | 6 | 2026-07-02 |
| CAL5685 | - | 6 | 2026-07-01 |
| CAL5522 | - | 6 | 2026-07-09 |
| CAL5346 | China Airlines | 6 | 2026-06-07 |
| CAL5165 | - | 6 | 2026-06-17 |
| CAL5154 | - | 6 | 2026-06-29 |
| CAL5345 | China Airlines | 5 | 2026-06-08 |
| CAL5312 | China Airlines | 5 | 2026-06-10 |
| CAL5311 | China Airlines | 5 | 2026-06-11 |
| CAL5235 | China Airlines | 5 | 2026-05-26 |
| CAL5116 | - | 5 | 2026-07-12 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CAL5118 | - | Jul 13, 23:20 UTC | Jul 14, 11:45 UTC | 12h 25m |
| 2026-07-13 | CAL5115 | - | Jul 13, 19:30 UTC | Jul 13, 20:00 UTC | 30m |
| 2026-07-13 | CAL5115 | - | Jul 13, 07:25 UTC | Jul 13, 18:30 UTC | 11h 5m |
| 2026-07-12 | CAL5116 | - | Jul 12, 16:01 UTC | Jul 13, 04:20 UTC | 12h 20m |
| 2026-07-12 | CAL5705 | NRT → TPE | Jul 12, 09:20 UTC | Jul 12, 12:05 UTC | 2h 45m |
| 2026-07-10 | CAL5706 | - | Jul 10, 06:15 UTC | Jul 10, 09:00 UTC | 2h 45m |
| 2026-07-09 | CAL5522 | FRA → TPE | Jul 9, 14:55 UTC | Jul 10, 03:40 UTC | 12h 45m |
| 2026-07-09 | CAL5663 | - | Jul 9, 03:40 UTC | Jul 9, 11:55 UTC | 8h 15m |
| 2026-07-08 | CAL5663 | - | Jul 8, 19:35 UTC | Jul 9, 01:45 UTC | 6h 10m |
| 2026-07-08 | CAL5834 | HKG → TPE | Jul 8, 15:50 UTC | Jul 8, 17:05 UTC | 1h 15m |
| 2026-07-08 | CAL5833 | - | Jul 8, 12:25 UTC | Jul 8, 13:40 UTC | 1h 15m |
| 2026-07-04 | CAL5321 | ANC → TPE | Jul 4, 23:15 UTC | Jul 5, 08:25 UTC | 9h 10m |
| 2026-07-04 | CAL5321 | JFK → ANC | Jul 4, 14:50 UTC | Jul 4, 21:40 UTC | 6h 50m |
| 2026-07-04 | CAL5322 | ANC → JFK | Jul 4, 05:40 UTC | Jul 4, 12:00 UTC | 6h 20m |
| 2026-07-03 | CAL5322 | - | Jul 3, 19:50 UTC | Jul 4, 04:30 UTC | 8h 40m |
| 2026-07-03 | CAL5115 | - | Jul 3, 04:25 UTC | Jul 3, 17:20 UTC | 12h 55m |
| 2026-07-02 | CAL5116 | - | Jul 2, 15:30 UTC | Jul 3, 01:10 UTC | 9h 40m |
| 2026-07-02 | CAL5116 | - | Jul 2, 13:45 UTC | Jul 2, 13:55 UTC | 10m |
| 2026-07-02 | CAL5686 | - | Jul 2, 05:15 UTC | Jul 2, 10:55 UTC | 5h 40m |
| 2026-07-02 | CAL5686 | - | Jul 2, 04:05 UTC | Jul 2, 04:15 UTC | 10m |
| 2026-07-01 | CAL5686 | AMS → BOM | Jul 1, 17:35 UTC | Jul 2, 02:00 UTC | 8h 25m |
| 2026-07-01 | CAL5685 | - | Jul 1, 03:15 UTC | Jul 1, 11:55 UTC | 8h 40m |
| 2026-07-01 | CAL5685 | - | Jul 1, 00:10 UTC | Jul 1, 00:15 UTC | 5m |
| 2026-06-30 | CAL5685 | - | Jun 30, 17:55 UTC | Jun 30, 23:00 UTC | 5h 5m |
| 2026-06-30 | CAL5153 | - | Jun 30, 10:45 UTC | Jun 30, 13:45 UTC | 3h 0m |
| 2026-06-29 | CAL5153 | - | Jun 29, 20:30 UTC | Jun 30, 07:55 UTC | 11h 26m |
| 2026-06-29 | CAL5154 | - | Jun 29, 07:40 UTC | Jun 29, 17:30 UTC | 9h 50m |
| 2026-06-29 | CAL5154 | - | Jun 29, 06:14 UTC | Jun 29, 06:24 UTC | 10m |
| 2026-06-28 | CAL5522 | FRA → TPE | Jun 28, 14:30 UTC | Jun 29, 03:25 UTC | 12h 55m |
| 2026-06-28 | CAL5663 | - | Jun 28, 01:25 UTC | Jun 28, 09:30 UTC | 8h 5m |
| 2026-06-27 | CAL5663 | - | Jun 27, 17:39 UTC | Jun 27, 23:45 UTC | 6h 5m |
| 2026-06-27 | CAL5823 | - | Jun 27, 07:59 UTC | Jun 27, 08:14 UTC | 15m |
| 2026-06-27 | CAL5823 | - | Jun 27, 06:54 UTC | Jun 27, 07:24 UTC | 30m |
| 2026-06-27 | CAL5161 | - | Jun 27, 03:34 UTC | Jun 27, 04:00 UTC | 25m |
| 2026-06-26 | CAL5161 | - | Jun 26, 14:55 UTC | Jun 26, 15:20 UTC | 25m |
| 2026-06-26 | CAL5162 | - | Jun 26, 01:45 UTC | Jun 26, 11:30 UTC | 9h 45m |
| 2026-06-26 | CAL5162 | - | Jun 26, 00:20 UTC | Jun 26, 00:30 UTC | 10m |
| 2026-06-25 | CAL5161 | - | Jun 25, 12:50 UTC | Jun 25, 13:35 UTC | 45m |
| 2026-06-24 | CAL5161 | - | Jun 24, 23:29 UTC | Jun 25, 11:19 UTC | 11h 50m |
| 2026-06-24 | CAL5162 | - | Jun 24, 11:14 UTC | Jun 24, 20:30 UTC | 9h 15m |
| 2026-06-24 | CAL5162 | - | Jun 24, 09:19 UTC | Jun 24, 09:34 UTC | 15m |
| 2026-06-23 | CAL5117 | LAX → TPE | Jun 23, 07:49 UTC | Jun 23, 21:05 UTC | 13h 15m |
| 2026-06-22 | CAL5118 | TPE → LAX | Jun 22, 18:24 UTC | Jun 23, 04:09 UTC | 9h 45m |
| 2026-06-22 | CAL5118 | TPE → LAX | Jun 22, 16:54 UTC | Jun 22, 17:10 UTC | 15m |
| 2026-06-22 | CAL5309 | ANC → TPE | Jun 22, 03:40 UTC | Jun 22, 12:54 UTC | 9h 15m |
| 2026-06-21 | CAL5309 | - | Jun 21, 19:09 UTC | Jun 22, 02:00 UTC | 6h 50m |
| 2026-06-21 | CAL5310 | YYZ → JFK | Jun 21, 15:25 UTC | Jun 21, 16:25 UTC | 1h 0m |
| 2026-06-21 | CAL5310 | ANC → YYZ | Jun 21, 08:35 UTC | Jun 21, 14:10 UTC | 5h 35m |
| 2026-06-20 | CAL5310 | TPE → ANC | Jun 20, 22:20 UTC | Jun 21, 07:14 UTC | 8h 55m |
| 2026-06-20 | TEST | TPE → TPE | Jun 20, 18:10 UTC | Jun 20, 18:34 UTC | 25m |
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-18780 page for operator, model, and routing details .