sensors Mode-S transponder
780538
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-3129 · EMBRAER ERJ-190-100
- Hex
- 780538
- Octal
- 36002470
- Decimal
- 7,865,656
- Country
- CN
- Tail
- B-3129
- Type
- E190
- Flights observed
- 41
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 7h ago
Last known position
Country allocation
The ICAO 24-bit address 780538 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 |
|---|---|---|---|
| GCR6532 | - | 6 | 2026-07-03 |
| GCR6413 | Tianjin Airlines | 5 | 2026-05-20 |
| GCR7929 | - | 3 | 2026-07-14 |
| GCR6531 | - | 3 | 2026-06-28 |
| GCR6414 | Tianjin Airlines | 3 | 2026-05-20 |
| GCR7930 | Tianjin Airlines | 2 | 2026-05-22 |
| GCR7850 | - | 2 | 2026-06-21 |
| GCR7780 | Tianjin Airlines | 2 | 2026-07-24 |
| GCR7779 | Tianjin Airlines | 2 | 2026-07-24 |
| GCR6563 | Tianjin Airlines | 2 | 2026-06-15 |
| GCR7832 | Tianjin Airlines | 1 | 2026-04-20 |
| GCR7831 | Tianjin Airlines | 1 | 2026-05-06 |
| GCR7830 | - | 1 | 2026-07-04 |
| GCR7798 | - | 1 | 2026-06-23 |
| GCR7797 | - | 1 | 2026-06-23 |
| GCR7716 | - | 1 | 2026-06-27 |
| GCR7674 | Tianjin Airlines | 1 | 2026-06-09 |
| GCR6566 | - | 1 | 2026-07-02 |
| GCR6564 | Tianjin Airlines | 1 | 2026-06-14 |
| GCR6544 | - | 1 | 2026-07-20 |
Recent flights last 41
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | GCR7780 | SYX → HUZ | Jul 24, 16:15 UTC | Jul 24, 16:25 UTC | 10m |
| 2026-07-24 | GCR7779 | HUZ → SYX | Jul 24, 13:15 UTC | Jul 24, 13:35 UTC | 20m |
| 2026-07-22 | GCR7780 | - | Jul 22, 15:15 UTC | Jul 22, 15:25 UTC | 10m |
| 2026-07-22 | GCR7779 | HUZ → SYX | Jul 22, 11:45 UTC | Jul 22, 12:00 UTC | 15m |
| 2026-07-20 | GCR6544 | - | Jul 20, 07:15 UTC | Jul 20, 10:35 UTC | 3h 20m |
| 2026-07-14 | GCR7929 | - | Jul 14, 00:50 UTC | Jul 14, 01:10 UTC | 20m |
| 2026-07-04 | GCR7830 | - | Jul 4, 10:55 UTC | Jul 4, 11:10 UTC | 15m |
| 2026-07-03 | GCR6532 | - | Jul 3, 23:20 UTC | Jul 3, 23:45 UTC | 25m |
| 2026-07-02 | GCR6566 | - | Jul 2, 00:55 UTC | Jul 2, 08:35 UTC | 7h 40m |
| 2026-07-01 | GCR6532 | - | Jul 1, 12:55 UTC | Jul 1, 13:05 UTC | 10m |
| 2026-06-28 | GCR6531 | - | Jun 28, 10:30 UTC | Jun 28, 10:39 UTC | 10m |
| 2026-06-28 | GCR6532 | - | Jun 28, 07:50 UTC | Jun 28, 08:00 UTC | 10m |
| 2026-06-27 | GCR7716 | - | Jun 27, 09:15 UTC | Jun 27, 09:24 UTC | 10m |
| 2026-06-23 | GCR7798 | - | Jun 23, 08:20 UTC | Jun 23, 08:39 UTC | 20m |
| 2026-06-23 | GCR7797 | - | Jun 23, 05:45 UTC | Jun 23, 06:04 UTC | 20m |
| 2026-06-21 | GCR7850 | - | Jun 21, 10:19 UTC | Jun 21, 10:29 UTC | 10m |
| 2026-06-19 | GCR6531 | - | Jun 19, 09:14 UTC | Jun 19, 09:30 UTC | 15m |
| 2026-06-19 | GCR6532 | - | Jun 19, 06:20 UTC | Jun 19, 06:29 UTC | 10m |
| 2026-06-16 | GCR6532 | - | Jun 16, 05:15 UTC | Jun 16, 05:30 UTC | 15m |
| 2026-06-15 | - | - | Jun 15, 09:49 UTC | Jun 15, 10:00 UTC | 10m |
| 2026-06-15 | GCR6563 | HAK → CSX | Jun 15, 00:29 UTC | Jun 15, 00:49 UTC | 20m |
| 2026-06-14 | GCR6564 | CSX → HAK | Jun 14, 09:50 UTC | Jun 14, 10:00 UTC | 10m |
| 2026-06-14 | GCR6563 | HAK → CSX | Jun 14, 00:30 UTC | Jun 14, 00:40 UTC | 10m |
| 2026-06-13 | GCR6532 | HUZ → HAK | Jun 13, 03:40 UTC | Jun 13, 04:00 UTC | 19m |
| 2026-06-13 | GCR6531 | - | Jun 13, 02:00 UTC | Jun 13, 02:10 UTC | 10m |
| 2026-06-09 | GCR7674 | XIY → TSN | Jun 9, 06:35 UTC | Jun 9, 06:45 UTC | 10m |
| 2026-05-22 | GCR7929 | TSN → KWE | May 22, 03:45 UTC | May 22, 04:15 UTC | 30m |
| 2026-05-22 | GCR7930 | KWE → TSN | May 22, 01:20 UTC | May 22, 01:40 UTC | 20m |
| 2026-05-20 | GCR6413 | HET → TSN | May 20, 12:20 UTC | May 20, 12:45 UTC | 25m |
| 2026-05-20 | GCR6414 | TSN → HET | May 20, 06:20 UTC | May 20, 06:40 UTC | 20m |
| 2026-05-19 | GCR6413 | HET → TSN | May 19, 12:30 UTC | May 19, 12:50 UTC | 20m |
| 2026-05-19 | GCR6414 | TSN → HET | May 19, 06:00 UTC | May 19, 06:25 UTC | 25m |
| 2026-05-19 | GCR7929 | TSN → KWE | May 19, 03:30 UTC | May 19, 03:50 UTC | 20m |
| 2026-05-19 | GCR7930 | KWE → TSN | May 19, 01:20 UTC | May 19, 01:45 UTC | 25m |
| 2026-05-18 | GCR6413 | HET → TSN | May 18, 12:40 UTC | May 18, 13:00 UTC | 20m |
| 2026-05-18 | GCR6414 | TSN → HET | May 18, 06:05 UTC | May 18, 06:25 UTC | 20m |
| 2026-05-17 | GCR6413 | HET → TSN | May 17, 12:35 UTC | May 17, 12:55 UTC | 20m |
| 2026-05-06 | GCR7831 | TSN → HET | May 6, 09:35 UTC | May 6, 09:55 UTC | 20m |
| 2026-05-04 | GCR7850 | ZUH → NNY | May 4, 10:30 UTC | May 4, 10:40 UTC | 10m |
| 2026-04-20 | GCR7832 | HET → TSN | Apr 20, 16:50 UTC | Apr 20, 17:05 UTC | 15m |
| 2026-04-19 | GCR6413 | HET → TSN | Apr 19, 14:30 UTC | Apr 19, 14:55 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-3129 page for operator, model, and routing details .