sensors Mode-S transponder
780EF1
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8249 · AIRBUS A-320
- Hex
- 780EF1
- Octal
- 36007361
- Decimal
- 7,868,145
- Country
- CN
- Tail
- B-8249
- Type
- A320
- Flights observed
- 40
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 780EF1 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 |
|---|---|---|---|
| CHB6546 | China West Air | 6 | 2026-05-19 |
| CHB6424 | China West Air | 3 | 2026-06-25 |
| CHB6423 | China West Air | 3 | 2026-06-25 |
| CHB6244 | China West Air | 3 | 2026-05-21 |
| CHB6592 | - | 2 | 2026-07-05 |
| CHB6449 | - | 2 | 2026-06-02 |
| CHB6371 | - | 2 | 2026-06-19 |
| CHB6322 | China West Air | 2 | 2026-06-12 |
| CHB6321 | China West Air | 2 | 2026-06-12 |
| CHB6306 | - | 2 | 2026-07-10 |
| CHB6305 | - | 2 | 2026-07-10 |
| CHB6302 | - | 2 | 2026-05-26 |
| CHB6508 | - | 1 | 2026-07-06 |
| CHB6507 | - | 1 | 2026-07-06 |
| CHB6463 | - | 1 | 2026-07-17 |
| CHB6452 | China West Air | 1 | 2026-05-25 |
| CHB6450 | - | 1 | 2026-06-02 |
| CHB6413 | China West Air | 1 | 2026-05-29 |
| CHB6372 | China West Air | 1 | 2026-05-17 |
| CHB6342 | - | 1 | 2026-07-09 |
Recent flights last 40
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CHB6463 | - | Jul 17, 07:44 UTC | Jul 17, 08:04 UTC | 20m |
| 2026-07-10 | CHB6306 | - | Jul 10, 02:05 UTC | Jul 10, 02:25 UTC | 20m |
| 2026-07-10 | CHB6305 | - | Jul 10, 00:00 UTC | Jul 10, 00:15 UTC | 15m |
| 2026-07-09 | CHB6342 | - | Jul 9, 08:55 UTC | Jul 9, 09:15 UTC | 20m |
| 2026-07-06 | CHB6508 | - | Jul 6, 12:45 UTC | Jul 6, 13:10 UTC | 25m |
| 2026-07-06 | CHB6507 | - | Jul 6, 09:30 UTC | Jul 6, 10:00 UTC | 30m |
| 2026-07-05 | CHB6592 | - | Jul 5, 13:40 UTC | Jul 5, 13:50 UTC | 10m |
| 2026-06-27 | CHB6305 | - | Jun 27, 23:55 UTC | Jun 28, 13:04 UTC | 13h 10m |
| 2026-06-25 | CHB6424 | HAN → CKG | Jun 25, 11:54 UTC | Jun 25, 12:10 UTC | 15m |
| 2026-06-25 | CHB6423 | CKG → HAN | Jun 25, 09:34 UTC | Jun 25, 10:04 UTC | 30m |
| 2026-06-22 | CHB6306 | - | Jun 22, 15:20 UTC | Jun 22, 15:29 UTC | 10m |
| 2026-06-19 | CHB6371 | - | Jun 19, 03:05 UTC | Jun 19, 03:39 UTC | 35m |
| 2026-06-16 | CHB6424 | HAN → CKG | Jun 16, 11:55 UTC | Jun 16, 12:14 UTC | 20m |
| 2026-06-16 | CHB6423 | CKG → HAN | Jun 16, 09:40 UTC | Jun 16, 10:00 UTC | 20m |
| 2026-06-12 | CHB6322 | SZX → HFE | Jun 12, 15:55 UTC | Jun 12, 16:05 UTC | 10m |
| 2026-06-12 | CHB6321 | HFE → SZX | Jun 12, 14:20 UTC | Jun 12, 14:30 UTC | 10m |
| 2026-06-11 | CHB6424 | HAN → CKG | Jun 11, 11:55 UTC | Jun 11, 12:10 UTC | 15m |
| 2026-06-11 | CHB6423 | CKG → HAN | Jun 11, 09:50 UTC | Jun 11, 10:15 UTC | 25m |
| 2026-06-07 | CHB6322 | SZX → HFE | Jun 7, 17:35 UTC | Jun 7, 17:50 UTC | 15m |
| 2026-06-07 | CHB6321 | HFE → SZX | Jun 7, 16:00 UTC | Jun 7, 16:15 UTC | 15m |
| 2026-06-02 | CHB6450 | - | Jun 2, 15:20 UTC | Jun 3, 09:25 UTC | 18h 5m |
| 2026-06-02 | CHB6449 | - | Jun 2, 13:25 UTC | Jun 2, 13:40 UTC | 15m |
| 2026-05-31 | CHB6592 | VTE → CKG | May 31, 13:40 UTC | May 31, 13:55 UTC | 15m |
| 2026-05-29 | CHB6264 | ZUH → CKG | May 29, 15:45 UTC | May 29, 16:00 UTC | 15m |
| 2026-05-29 | CHB6413 | HFE → KWE | May 29, 01:55 UTC | May 29, 02:05 UTC | 10m |
| 2026-05-26 | CHB6302 | - | May 26, 14:50 UTC | May 26, 15:09 UTC | 20m |
| 2026-05-25 | CHB6452 | KWE → LXA | May 25, 15:20 UTC | May 25, 15:30 UTC | 10m |
| 2026-05-21 | CHB6244 | ZUH → CGO | May 21, 20:10 UTC | May 21, 20:25 UTC | 15m |
| 2026-05-19 | CHB6546 | HSC → KMG | May 19, 05:20 UTC | May 19, 05:35 UTC | 15m |
| 2026-05-18 | CHB6546 | HSC → KMG | May 18, 04:55 UTC | May 18, 05:20 UTC | 25m |
| 2026-05-17 | CHB6372 | SYX → KOW | May 17, 03:05 UTC | May 17, 07:30 UTC | 4h 25m |
| 2026-05-13 | CHB6546 | HSC → KMG | May 13, 05:00 UTC | May 13, 05:25 UTC | 25m |
| 2026-05-05 | CHB6244 | ZUH → CGO | May 5, 15:10 UTC | May 5, 15:25 UTC | 15m |
| 2026-05-01 | CHB6371 | KOW → SYX | May 1, 03:00 UTC | May 1, 07:15 UTC | 4h 15m |
| 2026-04-30 | CHB6244 | ZUH → CGO | Apr 30, 15:25 UTC | Apr 30, 15:35 UTC | 10m |
| 2026-04-21 | CHB6546 | HSC → KMG | Apr 21, 05:00 UTC | Apr 21, 05:15 UTC | 15m |
| 2026-04-20 | CHB6546 | HSC → KMG | Apr 20, 05:15 UTC | Apr 20, 05:30 UTC | 15m |
| 2026-04-19 | CHB6546 | HSC → KMG | Apr 19, 05:10 UTC | Apr 19, 05:30 UTC | 20m |
| 2026-04-18 | CHB6302 | - | Apr 18, 15:10 UTC | Apr 18, 15:20 UTC | 10m |
| 2026-04-14 | CHB6449 | - | Apr 14, 13:35 UTC | Apr 14, 13:50 UTC | 15m |
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-8249 page for operator, model, and routing details .