sensors Mode-S transponder
7805A9
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-2073 · BOEING 777-200LR
- Hex
- 7805A9
- Octal
- 36002651
- Decimal
- 7,865,769
- Country
- CN
- Tail
- B-2073
- Type
- B77L
- Flights observed
- 127
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 7805A9 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 |
|---|---|---|---|
| CSG2510 | - | 12 | 2026-05-20 |
| CSG2509 | - | 10 | 2026-05-19 |
| CSG2567 | - | 9 | 2026-04-26 |
| CSG2598 | - | 8 | 2026-05-28 |
| CSG2543 | - | 7 | 2026-05-04 |
| CSG2501 | - | 7 | 2026-05-17 |
| CSG2662 | - | 4 | 2026-05-07 |
| CSG2597 | - | 4 | 2026-05-28 |
| CSG2544 | - | 4 | 2026-05-04 |
| CSG2539 | - | 4 | 2026-05-02 |
| CSG2536 | - | 4 | 2026-05-26 |
| CSG2525 | - | 4 | 2026-05-29 |
| CSG2524 | - | 4 | 2026-05-12 |
| CSG2521 | - | 4 | 2026-05-09 |
| CSG2502 | - | 4 | 2026-05-17 |
| CSG2683 | - | 3 | 2026-05-15 |
| CSG2653 | - | 3 | 2026-05-25 |
| CSG2569 | - | 3 | 2026-04-28 |
| CSG2535 | - | 3 | 2026-05-23 |
| CSG2523 | - | 3 | 2026-05-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CSG2525 | - | May 29, 22:55 UTC | May 30, 04:15 UTC | 5h 20m |
| 2026-05-29 | CSG2525 | - | May 29, 12:45 UTC | May 29, 19:20 UTC | 6h 36m |
| 2026-05-28 | CSG2525 | - | May 28, 22:20 UTC | May 29, 19:20 UTC | 21h 0m |
| 2026-05-28 | CSG2525 | - | May 28, 22:10 UTC | May 29, 19:20 UTC | 21h 11m |
| 2026-05-28 | CSG2598 | - | May 28, 14:20 UTC | May 29, 13:45 UTC | 23h 25m |
| 2026-05-28 | CSG2598 | - | May 28, 08:40 UTC | May 28, 22:25 UTC | 13h 45m |
| 2026-05-28 | CSG2597 | - | May 28, 01:05 UTC | May 28, 02:45 UTC | 1h 40m |
| 2026-05-26 | CSG2536 | - | May 26, 08:30 UTC | May 26, 20:45 UTC | 12h 15m |
| 2026-05-25 | CSG2653 | - | May 25, 19:25 UTC | May 26, 05:25 UTC | 10h 0m |
| 2026-05-24 | CSG2653 | - | May 24, 23:00 UTC | May 25, 20:45 UTC | 21h 44m |
| 2026-05-24 | CSG2692 | - | May 24, 17:20 UTC | May 24, 23:15 UTC | 5h 55m |
| 2026-05-23 | CSG2691 | - | May 23, 20:20 UTC | May 24, 14:40 UTC | 18h 20m |
| 2026-05-23 | CSG2536 | - | May 23, 10:20 UTC | May 24, 09:50 UTC | 23h 30m |
| 2026-05-23 | CSG2536 | - | May 23, 10:00 UTC | May 24, 08:15 UTC | 22h 15m |
| 2026-05-23 | CSG2535 | - | May 23, 01:50 UTC | May 23, 06:25 UTC | 4h 35m |
| 2026-05-22 | CSG2535 | - | May 22, 23:20 UTC | May 23, 00:35 UTC | 1h 15m |
| 2026-05-22 | CSG2535 | - | May 22, 02:35 UTC | May 23, 00:35 UTC | 22h 0m |
| 2026-05-22 | CSG2528 | - | May 22, 01:10 UTC | May 23, 00:15 UTC | 23h 5m |
| 2026-05-21 | CSG2528 | - | May 21, 21:10 UTC | May 22, 02:50 UTC | 5h 40m |
| 2026-05-21 | CSG2653 | - | May 21, 00:25 UTC | May 21, 18:25 UTC | 18h 0m |
| 2026-05-20 | CSG2510 | - | May 20, 15:55 UTC | May 21, 09:40 UTC | 17h 45m |
| 2026-05-20 | CSG2510 | - | May 20, 12:20 UTC | May 21, 09:40 UTC | 21h 20m |
| 2026-05-20 | CSG2510 | - | May 20, 11:55 UTC | May 21, 09:40 UTC | 21h 45m |
| 2026-05-19 | CSG2509 | - | May 19, 23:05 UTC | May 20, 09:00 UTC | 9h 56m |
| 2026-05-19 | CSG2509 | - | May 19, 10:20 UTC | May 20, 09:00 UTC | 22h 41m |
| 2026-05-19 | CSG2509 | - | May 19, 09:50 UTC | May 20, 08:15 UTC | 22h 26m |
| 2026-05-19 | CSG2510 | - | May 19, 00:20 UTC | May 20, 00:15 UTC | 23h 55m |
| 2026-05-18 | CSG2510 | - | May 18, 23:15 UTC | May 19, 11:30 UTC | 12h 15m |
| 2026-05-18 | CSG2509 | - | May 18, 04:15 UTC | May 18, 20:35 UTC | 16h 19m |
| 2026-05-17 | CSG2509 | - | May 17, 21:45 UTC | May 18, 20:15 UTC | 22h 29m |
| 2026-05-17 | CSG2502 | - | May 17, 16:20 UTC | May 18, 12:05 UTC | 19h 45m |
| 2026-05-17 | CSG2502 | - | May 17, 15:50 UTC | May 18, 12:05 UTC | 20h 15m |
| 2026-05-17 | CSG2501 | ANC → ORD | May 17, 07:40 UTC | May 17, 13:01 UTC | 5h 20m |
| 2026-05-16 | CSG2501 | - | May 16, 23:00 UTC | May 17, 06:25 UTC | 7h 25m |
| 2026-05-16 | CSG2501 | - | May 16, 11:25 UTC | May 17, 06:25 UTC | 19h 0m |
| 2026-05-16 | CSG2501 | - | May 16, 05:15 UTC | May 17, 00:25 UTC | 19h 10m |
| 2026-05-16 | CSG2502 | - | May 16, 00:20 UTC | May 17, 00:15 UTC | 23h 56m |
| 2026-05-15 | CSG2502 | - | May 15, 23:15 UTC | May 16, 12:05 UTC | 12h 51m |
| 2026-05-15 | CSG2683 | - | May 15, 15:00 UTC | May 15, 20:40 UTC | 5h 40m |
| 2026-05-15 | CSG2683 | - | May 15, 11:25 UTC | May 15, 12:50 UTC | 1h 25m |
| 2026-05-15 | CSG2683 | - | May 15, 03:15 UTC | May 15, 03:25 UTC | 10m |
| 2026-05-14 | CSG2686 | - | May 14, 16:40 UTC | May 14, 17:05 UTC | 25m |
| 2026-05-14 | CSG2686 | - | May 14, 01:25 UTC | May 14, 14:20 UTC | 12h 55m |
| 2026-05-13 | CSG2503 | ANC → ORD | May 13, 17:25 UTC | May 13, 22:45 UTC | 5h 20m |
| 2026-05-13 | CSG2503 | - | May 13, 08:45 UTC | May 13, 15:55 UTC | 7h 10m |
| 2026-05-12 | CSG2503 | - | May 12, 16:20 UTC | May 13, 15:55 UTC | 23h 35m |
| 2026-05-12 | CSG2524 | - | May 12, 14:20 UTC | May 13, 14:15 UTC | 23h 55m |
| 2026-05-12 | CSG2524 | - | May 12, 12:25 UTC | May 13, 10:10 UTC | 21h 45m |
| 2026-05-12 | CSG2524 | - | May 12, 10:20 UTC | May 13, 10:10 UTC | 23h 50m |
| 2026-05-12 | CSG2524 | - | May 12, 09:15 UTC | May 12, 16:35 UTC | 7h 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-2073 page for operator, model, and routing details .