sensors Mode-S transponder
7807B9
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-3185 · EMBRAER ERJ-190-100
- Hex
- 7807B9
- Octal
- 36003671
- Decimal
- 7,866,297
- Country
- CN
- Tail
- B-3185
- Type
- E190
- Flights observed
- 28
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- Jul 24, 07:15 UTC
Last known position
Country allocation
The ICAO 24-bit address 7807B9 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| GCR6452 | - | 4 | 2026-06-26 |
| GCR6451 | - | 4 | 2026-06-26 |
| GCR6414 | - | 4 | 2026-07-13 |
| GCR6413 | - | 4 | 2026-07-12 |
| GCR6566 | Tianjin Airlines | 3 | 2026-04-18 |
| GCR6664 | Tianjin Airlines | 2 | 2026-06-11 |
| GCR6663 | Tianjin Airlines | 2 | 2026-06-11 |
| GCR7850 | - | 1 | 2026-07-05 |
| GCR7831 | Tianjin Airlines | 1 | 2026-04-22 |
| GCR7701 | Tianjin Airlines | 1 | 2026-04-13 |
| GCR6532 | - | 1 | 2026-04-13 |
| GCR6418 | - | 1 | 2026-07-24 |
Recent flights last 28
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | GCR6418 | - | Jul 24, 06:45 UTC | Jul 24, 07:15 UTC | 30m |
| 2026-07-13 | GCR6414 | - | Jul 13, 08:25 UTC | Jul 13, 08:45 UTC | 20m |
| 2026-07-12 | GCR6413 | - | Jul 12, 14:35 UTC | Jul 12, 14:55 UTC | 20m |
| 2026-07-05 | GCR7850 | - | Jul 5, 12:50 UTC | Jul 5, 13:05 UTC | 15m |
| 2026-06-26 | GCR6452 | - | Jun 26, 13:04 UTC | Jun 26, 13:15 UTC | 10m |
| 2026-06-26 | GCR6451 | - | Jun 26, 11:30 UTC | Jun 26, 11:45 UTC | 15m |
| 2026-06-25 | GCR6452 | - | Jun 25, 13:35 UTC | Jun 26, 11:45 UTC | 22h 10m |
| 2026-06-25 | GCR6451 | - | Jun 25, 12:04 UTC | Jun 25, 12:19 UTC | 15m |
| 2026-06-22 | GCR6452 | - | Jun 22, 12:54 UTC | Jun 22, 13:10 UTC | 15m |
| 2026-06-22 | GCR6451 | - | Jun 22, 11:19 UTC | Jun 22, 11:30 UTC | 10m |
| 2026-06-21 | GCR6452 | - | Jun 21, 12:55 UTC | Jun 21, 13:09 UTC | 15m |
| 2026-06-21 | GCR6451 | - | Jun 21, 11:20 UTC | Jun 21, 11:30 UTC | 10m |
| 2026-06-11 | GCR6664 | CSX → TSN | Jun 11, 07:20 UTC | Jun 11, 07:35 UTC | 15m |
| 2026-06-11 | GCR6663 | TSN → CSX | Jun 11, 03:55 UTC | Jun 11, 04:05 UTC | 10m |
| 2026-06-07 | GCR6413 | HET → TSN | Jun 7, 12:35 UTC | Jun 7, 12:55 UTC | 20m |
| 2026-06-07 | GCR6414 | TSN → HET | Jun 7, 06:10 UTC | Jun 7, 06:35 UTC | 25m |
| 2026-06-06 | GCR6413 | HET → TSN | Jun 6, 12:24 UTC | Jun 6, 12:40 UTC | 15m |
| 2026-05-19 | GCR6664 | CSX → TSN | May 19, 07:30 UTC | May 19, 07:45 UTC | 15m |
| 2026-05-19 | GCR6663 | TSN → CSX | May 19, 04:25 UTC | May 19, 04:35 UTC | 10m |
| 2026-04-25 | GCR6414 | TSN → HET | Apr 25, 08:10 UTC | Apr 25, 08:20 UTC | 10m |
| 2026-04-24 | GCR6413 | HET → TSN | Apr 24, 14:35 UTC | Apr 24, 14:55 UTC | 20m |
| 2026-04-24 | GCR6414 | TSN → HET | Apr 24, 08:20 UTC | Apr 24, 08:35 UTC | 15m |
| 2026-04-22 | GCR7831 | TSN → HET | Apr 22, 09:25 UTC | Apr 22, 09:55 UTC | 30m |
| 2026-04-18 | GCR6566 | WUH → HAK | Apr 18, 08:20 UTC | Apr 18, 08:35 UTC | 15m |
| 2026-04-18 | GCR6566 | WUH → HAK | Apr 18, 00:50 UTC | Apr 18, 08:35 UTC | 7h 45m |
| 2026-04-16 | GCR6566 | WUH → HAK | Apr 16, 07:39 UTC | Apr 16, 08:00 UTC | 20m |
| 2026-04-13 | GCR6532 | - | Apr 13, 13:55 UTC | Apr 13, 14:15 UTC | 20m |
| 2026-04-13 | GCR7701 | HUZ → CGD | Apr 13, 08:00 UTC | Apr 13, 08:10 UTC | 10m |
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-3185 page for operator, model, and routing details .