sensors Mode-S transponder
780FA1
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-7849 · BOEING 737-800
- Hex
- 780FA1
- Octal
- 36007641
- Decimal
- 7,868,321
- Country
- CN
- Tail
- B-7849
- Type
- B738
- Flights observed
- 59
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 780FA1 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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 |
|---|---|---|---|
| CXA8781 | - | 4 | 2026-07-09 |
| CXA8697 | - | 4 | 2026-06-14 |
| CXA8523 | - | 4 | 2026-05-26 |
| CXA878 | - | 3 | 2026-07-01 |
| CXA877 | - | 3 | 2026-07-01 |
| CXA8691 | - | 3 | 2026-07-07 |
| CXA817 | - | 3 | 2026-05-25 |
| CXA8698 | Xiamen Airlines | 2 | 2026-06-14 |
| CXA8316 | - | 2 | 2026-07-08 |
| CXA8222 | - | 2 | 2026-04-25 |
| CXA818 | - | 2 | 2026-05-25 |
| CXA8044 | Xiamen Airlines | 2 | 2026-05-09 |
| CXA8868 | - | 1 | 2026-04-17 |
| CXA8867 | - | 1 | 2026-04-17 |
| CXA8842 | - | 1 | 2026-06-19 |
| CXA8841 | - | 1 | 2026-06-19 |
| CXA8789 | - | 1 | 2026-07-06 |
| CXA8692 | - | 1 | 2026-04-23 |
| CXA869 | Xiamen Airlines | 1 | 2026-04-26 |
| CXA860 | - | 1 | 2026-06-04 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | CXA818X | - | Jul 16, 09:45 UTC | Jul 16, 09:55 UTC | 10m |
| 2026-07-15 | CXA8181 | - | Jul 15, 08:05 UTC | Jul 15, 08:25 UTC | 20m |
| 2026-07-10 | CXA8390 | - | Jul 10, 14:25 UTC | Jul 10, 14:35 UTC | 10m |
| 2026-07-09 | CXA8781 | - | Jul 9, 04:05 UTC | Jul 9, 08:00 UTC | 3h 55m |
| 2026-07-08 | CXA8316 | - | Jul 8, 00:45 UTC | Jul 8, 11:40 UTC | 10h 55m |
| 2026-07-07 | CXA8316 | - | Jul 7, 07:20 UTC | Jul 8, 04:40 UTC | 21h 20m |
| 2026-07-07 | CXA8691 | - | Jul 7, 05:25 UTC | Jul 7, 06:00 UTC | 35m |
| 2026-07-06 | CXA8691 | - | Jul 6, 07:30 UTC | Jul 7, 06:00 UTC | 22h 30m |
| 2026-07-06 | CXA8789 | - | Jul 6, 01:50 UTC | Jul 6, 08:00 UTC | 6h 10m |
| 2026-07-05 | CXA8026 | - | Jul 5, 05:40 UTC | Jul 5, 05:50 UTC | 10m |
| 2026-07-05 | CXA8025 | - | Jul 5, 00:45 UTC | Jul 5, 00:55 UTC | 10m |
| 2026-07-01 | CXA878 | - | Jul 1, 11:45 UTC | Jul 1, 12:30 UTC | 45m |
| 2026-07-01 | CXA877 | - | Jul 1, 09:05 UTC | Jul 1, 09:45 UTC | 40m |
| 2026-06-19 | CXA8842 | - | Jun 19, 10:44 UTC | Jun 19, 10:59 UTC | 15m |
| 2026-06-19 | CXA8841 | - | Jun 19, 08:59 UTC | Jun 19, 09:19 UTC | 20m |
| 2026-06-18 | CXA878 | - | Jun 18, 11:45 UTC | Jun 18, 12:30 UTC | 45m |
| 2026-06-18 | CXA877 | - | Jun 18, 09:00 UTC | Jun 18, 09:45 UTC | 45m |
| 2026-06-14 | CXA8698 | HAN → FOC | Jun 14, 09:55 UTC | Jun 14, 10:15 UTC | 20m |
| 2026-06-14 | CXA8697 | - | Jun 14, 08:05 UTC | Jun 14, 08:25 UTC | 20m |
| 2026-06-13 | CXA8697 | - | Jun 13, 12:20 UTC | Jun 14, 08:25 UTC | 20h 6m |
| 2026-06-13 | CXA878 | ICN → FOC | Jun 13, 11:50 UTC | Jun 14, 08:25 UTC | 20h 35m |
| 2026-06-13 | CXA877 | - | Jun 13, 09:05 UTC | Jun 13, 09:45 UTC | 40m |
| 2026-06-13 | CXA8459 | FOC → KWE | Jun 13, 00:40 UTC | Jun 13, 00:50 UTC | 10m |
| 2026-06-05 | CXA8698 | HAN → FOC | Jun 5, 10:05 UTC | Jun 6, 02:20 UTC | 16h 15m |
| 2026-06-05 | CXA8697 | FOC → HAN | Jun 5, 08:20 UTC | Jun 5, 08:40 UTC | 20m |
| 2026-06-04 | CXA860 | - | Jun 4, 08:50 UTC | Jun 5, 02:35 UTC | 17h 45m |
| 2026-06-04 | CXA859 | - | Jun 4, 05:55 UTC | Jun 4, 07:20 UTC | 1h 25m |
| 2026-06-02 | CXA8781 | SHE → FOC | Jun 2, 00:05 UTC | Jun 2, 07:50 UTC | 7h 45m |
| 2026-06-01 | CXA8781 | SHE → FOC | Jun 1, 11:50 UTC | Jun 2, 07:50 UTC | 20h 0m |
| 2026-05-29 | CXA8051 | - | May 29, 11:05 UTC | May 29, 11:25 UTC | 20m |
| 2026-05-29 | CXA8342 | - | May 29, 05:35 UTC | May 29, 09:00 UTC | 3h 25m |
| 2026-05-29 | CXA8526 | - | May 29, 01:45 UTC | May 29, 02:15 UTC | 30m |
| 2026-05-26 | CXA8523 | - | May 26, 13:50 UTC | May 26, 14:20 UTC | 30m |
| 2026-05-25 | CXA818 | - | May 25, 10:10 UTC | May 25, 11:20 UTC | 1h 10m |
| 2026-05-25 | CXA817 | - | May 25, 07:40 UTC | May 25, 08:35 UTC | 55m |
| 2026-05-18 | CXA8575 | XMN → HSN | May 18, 22:30 UTC | May 18, 23:00 UTC | 30m |
| 2026-05-17 | CXA8781 | SHE → FOC | May 17, 00:25 UTC | May 17, 09:35 UTC | 9h 10m |
| 2026-05-09 | CXA8044 | CGQ → HGH | May 9, 06:40 UTC | May 9, 07:15 UTC | 35m |
| 2026-05-07 | CXA8523 | - | May 7, 09:30 UTC | May 8, 02:14 UTC | 16h 45m |
| 2026-05-07 | CXA8341 | - | May 7, 05:30 UTC | May 8, 02:14 UTC | 20h 45m |
| 2026-05-04 | CXA8091 | CSX → SHE | May 4, 02:00 UTC | May 4, 02:10 UTC | 10m |
| 2026-04-29 | CXA8697 | FOC → HAN | Apr 29, 07:15 UTC | Apr 29, 14:15 UTC | 7h 1m |
| 2026-04-28 | CXA8523 | - | Apr 28, 14:20 UTC | Apr 29, 14:15 UTC | 23h 55m |
| 2026-04-28 | CXA8523 | - | Apr 28, 14:10 UTC | Apr 29, 11:20 UTC | 21h 10m |
| 2026-04-28 | CXA8076 | CGQ → NGB | Apr 28, 06:25 UTC | Apr 28, 14:30 UTC | 8h 5m |
| 2026-04-27 | CXA8044 | CGQ → HGH | Apr 27, 06:45 UTC | Apr 27, 07:35 UTC | 50m |
| 2026-04-26 | CXA869 | XMN → HAN | Apr 26, 05:45 UTC | Apr 26, 10:05 UTC | 4h 20m |
| 2026-04-25 | CXA8222 | - | Apr 25, 04:00 UTC | Apr 25, 04:10 UTC | 10m |
| 2026-04-23 | CXA8692 | - | Apr 23, 04:55 UTC | Apr 23, 05:10 UTC | 15m |
| 2026-04-23 | CXA8691 | - | Apr 23, 02:40 UTC | Apr 23, 03:10 UTC | 30m |
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-7849 page for operator, model, and routing details .