sensors Mode-S transponder
7818FB
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-30E8 · AIRBUS A-321neo
- Hex
- 7818FB
- Octal
- 36014373
- Decimal
- 7,870,715
- Country
- CN
- Tail
- B-30E8
- Type
- A21N
- Flights observed
- 36
- Distinct callsigns
- 7
- Country
- CN
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 7818FB 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 7 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CQN2074 | - | 30 | 2026-06-07 |
| CQN2336 | - | 1 | 2026-04-21 |
| CQN2335 | - | 1 | 2026-04-21 |
| CQN2194 | Chongqing Airlines | 1 | 2026-05-23 |
| CQN2193 | Chongqing Airlines | 1 | 2026-05-23 |
| CQN2076 | - | 1 | 2026-05-07 |
| CQN2073 | - | 1 | 2026-05-17 |
Recent flights last 36
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-07 | CQN2074 | - | Jun 7, 02:00 UTC | Jun 7, 13:20 UTC | 11h 20m |
| 2026-06-06 | CQN2074 | - | Jun 6, 13:09 UTC | Jun 7, 09:55 UTC | 20h 45m |
| 2026-06-06 | CQN2074 | - | Jun 6, 09:45 UTC | Jun 7, 02:14 UTC | 16h 30m |
| 2026-06-06 | CQN2074 | - | Jun 6, 01:55 UTC | Jun 6, 13:34 UTC | 11h 40m |
| 2026-06-04 | CQN2074 | - | Jun 4, 09:50 UTC | Jun 4, 13:45 UTC | 3h 55m |
| 2026-06-03 | CQN2074 | - | Jun 3, 13:55 UTC | Jun 4, 10:05 UTC | 20h 10m |
| 2026-06-03 | CQN2074 | - | Jun 3, 01:40 UTC | Jun 3, 14:20 UTC | 12h 40m |
| 2026-06-02 | CQN2074 | - | Jun 2, 15:00 UTC | Jun 3, 14:20 UTC | 23h 20m |
| 2026-05-23 | CQN2194 | BKI → CKG | May 23, 16:50 UTC | May 23, 19:15 UTC | 2h 25m |
| 2026-05-23 | CQN2193 | CKG → BKI | May 23, 12:20 UTC | May 23, 15:00 UTC | 2h 40m |
| 2026-05-21 | CQN2074 | - | May 21, 01:40 UTC | May 21, 13:45 UTC | 12h 5m |
| 2026-05-19 | CQN2074 | - | May 19, 13:25 UTC | May 19, 13:50 UTC | 25m |
| 2026-05-18 | CQN2074 | - | May 18, 01:50 UTC | May 18, 13:55 UTC | 12h 5m |
| 2026-05-17 | CQN2073 | - | May 17, 10:10 UTC | May 18, 02:10 UTC | 16h 0m |
| 2026-05-09 | CQN2074 | - | May 9, 13:55 UTC | May 9, 14:15 UTC | 20m |
| 2026-05-07 | CQN2076 | - | May 7, 01:55 UTC | May 7, 14:20 UTC | 12h 25m |
| 2026-05-06 | CQN2074 | - | May 6, 13:20 UTC | May 7, 10:00 UTC | 20h 40m |
| 2026-05-06 | CQN2074 | - | May 6, 10:10 UTC | May 7, 02:00 UTC | 15h 49m |
| 2026-05-06 | CQN2074 | - | May 6, 02:01 UTC | May 6, 13:50 UTC | 11h 49m |
| 2026-05-03 | CQN2074 | - | May 3, 01:50 UTC | May 3, 14:05 UTC | 12h 14m |
| 2026-04-30 | CQN2074 | - | Apr 30, 02:10 UTC | Apr 30, 14:10 UTC | 12h 0m |
| 2026-04-29 | CQN2074 | - | Apr 29, 13:20 UTC | Apr 30, 10:10 UTC | 20h 49m |
| 2026-04-28 | CQN2074 | - | Apr 28, 09:50 UTC | Apr 28, 13:40 UTC | 3h 50m |
| 2026-04-27 | CQN2074 | - | Apr 27, 13:30 UTC | Apr 28, 09:55 UTC | 20h 25m |
| 2026-04-27 | CQN2074 | - | Apr 27, 01:55 UTC | Apr 27, 14:00 UTC | 12h 5m |
| 2026-04-26 | CQN2074 | - | Apr 26, 13:35 UTC | Apr 27, 10:05 UTC | 20h 30m |
| 2026-04-26 | CQN2074 | - | Apr 26, 10:20 UTC | Apr 27, 01:55 UTC | 15h 35m |
| 2026-04-26 | CQN2074 | - | Apr 26, 02:40 UTC | Apr 26, 13:55 UTC | 11h 15m |
| 2026-04-25 | CQN2074 | - | Apr 25, 13:20 UTC | Apr 26, 10:25 UTC | 21h 5m |
| 2026-04-25 | CQN2074 | - | Apr 25, 10:10 UTC | Apr 26, 02:45 UTC | 16h 35m |
| 2026-04-24 | CQN2074 | - | Apr 24, 13:45 UTC | Apr 25, 10:20 UTC | 20h 35m |
| 2026-04-24 | CQN2074 | - | Apr 24, 01:50 UTC | Apr 24, 14:00 UTC | 12h 10m |
| 2026-04-23 | CQN2074 | - | Apr 23, 13:20 UTC | Apr 24, 10:45 UTC | 21h 25m |
| 2026-04-21 | CQN2336 | - | Apr 21, 03:35 UTC | Apr 21, 03:45 UTC | 10m |
| 2026-04-21 | CQN2335 | - | Apr 21, 01:40 UTC | Apr 21, 01:50 UTC | 10m |
| 2026-04-18 | CQN2074 | - | Apr 18, 10:00 UTC | Apr 18, 13:25 UTC | 3h 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-30E8 page for operator, model, and routing details .