sensors Mode-S transponder
7815DF
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-305Q · AIRBUS A-320neo
- Hex
- 7815DF
- Octal
- 36012737
- Decimal
- 7,869,919
- Country
- CN
- Tail
- B-305Q
- Type
- A20N
- Flights observed
- 34
- Distinct callsigns
- 11
- Country
- CN
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 7815DF 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 11 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CQN2362 | Chongqing Airlines | 7 | 2026-05-30 |
| CQN2361 | Chongqing Airlines | 7 | 2026-05-30 |
| CQN2394 | Chongqing Airlines | 3 | 2026-05-05 |
| CQN2393 | Chongqing Airlines | 3 | 2026-05-05 |
| CQN2096 | Chongqing Airlines | 3 | 2026-05-24 |
| CQN2062 | Chongqing Airlines | 3 | 2026-05-29 |
| CQN2061 | Chongqing Airlines | 3 | 2026-05-29 |
| CQN2336 | - | 2 | 2026-05-28 |
| CQN2346 | - | 1 | 2026-05-29 |
| CQN2095 | Chongqing Airlines | 1 | 2026-05-01 |
| CQN2074 | - | 1 | 2026-05-25 |
Recent flights last 34
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CQN2362 | BKK → CKG | May 30, 18:30 UTC | May 30, 19:20 UTC | 50m |
| 2026-05-30 | CQN2361 | CKG → BKK | May 30, 15:40 UTC | May 30, 16:35 UTC | 55m |
| 2026-05-29 | CQN2346 | - | May 29, 15:50 UTC | May 29, 16:05 UTC | 15m |
| 2026-05-29 | CQN2062 | HKG → CKG | May 29, 05:35 UTC | May 29, 05:50 UTC | 15m |
| 2026-05-29 | CQN2061 | CKG → HKG | May 29, 03:35 UTC | May 29, 04:10 UTC | 35m |
| 2026-05-28 | CQN2336 | - | May 28, 03:35 UTC | May 28, 03:45 UTC | 10m |
| 2026-05-26 | CQN2362 | BKK → CKG | May 26, 18:19 UTC | May 26, 19:10 UTC | 50m |
| 2026-05-26 | CQN2361 | CKG → BKK | May 26, 15:45 UTC | May 26, 16:40 UTC | 55m |
| 2026-05-25 | CQN2074 | - | May 25, 09:50 UTC | May 25, 13:45 UTC | 3h 55m |
| 2026-05-24 | CQN2096 | SIN → CKG | May 24, 06:45 UTC | May 24, 07:15 UTC | 30m |
| 2026-05-21 | CQN2362 | BKK → CKG | May 21, 18:35 UTC | May 21, 19:05 UTC | 30m |
| 2026-05-21 | CQN2361 | CKG → BKK | May 21, 16:15 UTC | May 21, 16:40 UTC | 25m |
| 2026-05-16 | CQN2336 | - | May 16, 03:35 UTC | May 16, 03:45 UTC | 10m |
| 2026-05-08 | CQN2096 | SIN → CKG | May 8, 07:09 UTC | May 8, 07:29 UTC | 20m |
| 2026-05-05 | CQN2394 | CMB → CKG | May 5, 16:55 UTC | May 6, 11:45 UTC | 18h 50m |
| 2026-05-05 | CQN2394 | CMB → CKG | May 5, 14:35 UTC | May 6, 11:45 UTC | 21h 10m |
| 2026-05-05 | CQN2394 | CMB → CKG | May 5, 11:35 UTC | May 6, 08:10 UTC | 20h 35m |
| 2026-05-05 | CQN2393 | CMB → MLE | May 5, 06:25 UTC | May 5, 19:25 UTC | 13h 0m |
| 2026-05-04 | CQN2393 | CMB → MLE | May 4, 15:00 UTC | May 5, 11:40 UTC | 20h 41m |
| 2026-05-04 | CQN2393 | CMB → MLE | May 4, 12:55 UTC | May 5, 11:40 UTC | 22h 46m |
| 2026-05-01 | CQN2096 | SIN → CKG | May 1, 06:45 UTC | May 1, 07:15 UTC | 30m |
| 2026-05-01 | CQN2095 | CKG → SIN | May 1, 04:40 UTC | May 1, 05:15 UTC | 35m |
| 2026-04-28 | CQN2362 | BKK → CKG | Apr 28, 18:35 UTC | Apr 28, 19:10 UTC | 35m |
| 2026-04-28 | CQN2361 | CKG → BKK | Apr 28, 16:50 UTC | Apr 28, 17:15 UTC | 25m |
| 2026-04-24 | CQN2062 | HKG → CKG | Apr 24, 06:20 UTC | Apr 24, 06:35 UTC | 15m |
| 2026-04-24 | CQN2061 | CKG → HKG | Apr 24, 03:40 UTC | Apr 24, 04:10 UTC | 30m |
| 2026-04-23 | CQN2362 | BKK → CKG | Apr 23, 17:50 UTC | Apr 23, 18:45 UTC | 55m |
| 2026-04-23 | CQN2361 | CKG → BKK | Apr 23, 15:30 UTC | Apr 23, 16:25 UTC | 55m |
| 2026-04-17 | CQN2062 | HKG → CKG | Apr 17, 05:55 UTC | Apr 17, 06:10 UTC | 15m |
| 2026-04-17 | CQN2061 | CKG → HKG | Apr 17, 03:25 UTC | Apr 17, 03:55 UTC | 30m |
| 2026-04-16 | CQN2362 | BKK → CKG | Apr 16, 17:50 UTC | Apr 16, 18:10 UTC | 20m |
| 2026-04-16 | CQN2361 | CKG → BKK | Apr 16, 16:10 UTC | Apr 16, 16:25 UTC | 15m |
| 2026-04-14 | CQN2362 | BKK → CKG | Apr 14, 18:20 UTC | Apr 14, 18:45 UTC | 25m |
| 2026-04-14 | CQN2361 | CKG → BKK | Apr 14, 16:30 UTC | Apr 14, 16:45 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-305Q page for operator, model, and routing details .