sensors Mode-S transponder
7815DE
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-305P · AIRBUS A-320neo
- Hex
- 7815DE
- Octal
- 36012736
- Decimal
- 7,869,918
- Country
- CN
- Tail
- B-305P
- Type
- A20N
- Flights observed
- 66
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 7815DE 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 |
|---|---|---|---|
| CQN2362 | - | 10 | 2026-07-08 |
| CQN2361 | - | 10 | 2026-07-08 |
| CQN2193 | - | 6 | 2026-07-07 |
| CQN2346 | - | 5 | 2026-07-16 |
| CQN2194 | - | 4 | 2026-07-07 |
| CQN2394 | Chongqing Airlines | 3 | 2026-05-26 |
| CQN2336 | - | 3 | 2026-06-23 |
| CQN2195 | Chongqing Airlines | 3 | 2026-06-01 |
| CQN2393 | Chongqing Airlines | 2 | 2026-05-26 |
| CQN2343 | - | 2 | 2026-05-09 |
| CQN2096 | - | 2 | 2026-06-28 |
| CQN2377 | - | 1 | 2026-07-01 |
| CQN2350 | - | 1 | 2026-05-18 |
| CQN2342 | - | 1 | 2026-06-19 |
| CQN2341 | - | 1 | 2026-06-19 |
| CQN2335 | - | 1 | 2026-06-20 |
| CQN2332 | - | 1 | 2026-05-26 |
| CQN2181 | - | 1 | 2026-07-22 |
| CQN2173 | - | 1 | 2026-07-18 |
| CQN2095 | - | 1 | 2026-06-28 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-22 | CQN2181 | - | Jul 22, 11:15 UTC | Jul 22, 14:00 UTC | 2h 45m |
| 2026-07-18 | CQN2173 | - | Jul 18, 03:45 UTC | Jul 19, 02:25 UTC | 22h 40m |
| 2026-07-16 | CQN2346 | - | Jul 16, 08:25 UTC | Jul 16, 08:40 UTC | 15m |
| 2026-07-08 | CQN2362 | - | Jul 8, 18:20 UTC | Jul 8, 19:45 UTC | 1h 25m |
| 2026-07-08 | CQN2361 | - | Jul 8, 15:25 UTC | Jul 8, 16:55 UTC | 1h 30m |
| 2026-07-07 | CQN2194 | - | Jul 7, 16:20 UTC | Jul 7, 18:50 UTC | 2h 30m |
| 2026-07-07 | CQN2193 | - | Jul 7, 14:50 UTC | Jul 7, 15:10 UTC | 20m |
| 2026-07-07 | CQN2193 | - | Jul 7, 12:35 UTC | Jul 7, 13:05 UTC | 30m |
| 2026-07-06 | CQN2193 | - | Jul 6, 14:35 UTC | Jul 7, 13:05 UTC | 22h 30m |
| 2026-07-05 | CQN2362 | - | Jul 5, 18:15 UTC | Jul 6, 14:50 UTC | 20h 35m |
| 2026-07-05 | CQN2361 | - | Jul 5, 15:25 UTC | Jul 5, 16:50 UTC | 1h 25m |
| 2026-07-02 | CQN2346 | - | Jul 2, 09:10 UTC | Jul 2, 09:20 UTC | 10m |
| 2026-07-02 | - | - | Jul 2, 07:20 UTC | Jul 2, 07:30 UTC | 10m |
| 2026-07-01 | CQN2377 | - | Jul 1, 07:45 UTC | Jul 1, 07:55 UTC | 10m |
| 2026-06-28 | CQN2006 | - | Jun 28, 15:24 UTC | Jun 28, 16:09 UTC | 45m |
| 2026-06-28 | CQN2096 | - | Jun 28, 06:44 UTC | Jun 28, 10:15 UTC | 3h 30m |
| 2026-06-28 | CQN2095 | - | Jun 28, 02:05 UTC | Jun 28, 05:15 UTC | 3h 10m |
| 2026-06-25 | CQN2194 | - | Jun 25, 16:14 UTC | Jun 25, 18:39 UTC | 2h 25m |
| 2026-06-25 | CQN2193 | - | Jun 25, 12:19 UTC | Jun 25, 14:59 UTC | 2h 40m |
| 2026-06-23 | CQN2336 | - | Jun 23, 03:49 UTC | Jun 23, 04:45 UTC | 55m |
| 2026-06-20 | CQN2336 | - | Jun 20, 03:34 UTC | Jun 20, 03:49 UTC | 15m |
| 2026-06-20 | CQN2335 | - | Jun 20, 01:39 UTC | Jun 20, 01:50 UTC | 10m |
| 2026-06-19 | CQN2342 | - | Jun 19, 09:14 UTC | Jun 19, 09:30 UTC | 15m |
| 2026-06-19 | CQN2341 | - | Jun 19, 06:14 UTC | Jun 19, 06:35 UTC | 20m |
| 2026-06-18 | CQN2336 | - | Jun 18, 12:20 UTC | Jun 18, 12:35 UTC | 15m |
| 2026-06-17 | CQN2346 | - | Jun 17, 16:10 UTC | Jun 17, 16:25 UTC | 15m |
| 2026-06-14 | CQN2346 | - | Jun 14, 15:55 UTC | Jun 14, 16:10 UTC | 15m |
| 2026-06-04 | CQN2362 | BKK → CKG | Jun 4, 18:20 UTC | Jun 4, 19:15 UTC | 55m |
| 2026-06-04 | CQN2361 | CKG → BKK | Jun 4, 16:00 UTC | Jun 4, 16:55 UTC | 55m |
| 2026-06-03 | CQN2362 | BKK → CKG | Jun 3, 18:20 UTC | Jun 4, 16:55 UTC | 22h 35m |
| 2026-06-03 | CQN2361 | CKG → BKK | Jun 3, 15:45 UTC | Jun 3, 16:40 UTC | 55m |
| 2026-06-02 | CQN2346 | - | Jun 2, 08:05 UTC | Jun 2, 08:20 UTC | 15m |
| 2026-06-01 | CQN2195 | CKG → PEN | Jun 1, 12:55 UTC | Jun 1, 20:05 UTC | 7h 10m |
| 2026-05-31 | CQN2195 | CKG → PEN | May 31, 19:50 UTC | Jun 1, 13:30 UTC | 17h 40m |
| 2026-05-31 | CQN2195 | CKG → PEN | May 31, 12:55 UTC | May 31, 13:40 UTC | 45m |
| 2026-05-29 | CQN2362 | BKK → CKG | May 29, 18:20 UTC | May 29, 19:25 UTC | 1h 5m |
| 2026-05-29 | CQN2361 | CKG → BKK | May 29, 15:50 UTC | May 29, 16:55 UTC | 1h 5m |
| 2026-05-26 | CQN2332 | - | May 26, 19:40 UTC | May 27, 14:40 UTC | 19h 0m |
| 2026-05-26 | CQN2394 | CMB → CKG | May 26, 18:55 UTC | May 27, 14:40 UTC | 19h 45m |
| 2026-05-26 | CQN2394 | CMB → CKG | May 26, 17:15 UTC | May 27, 14:40 UTC | 21h 25m |
| 2026-05-26 | CQN2394 | CMB → CKG | May 26, 14:40 UTC | May 27, 12:10 UTC | 21h 30m |
| 2026-05-26 | CQN2393 | CMB → MLE | May 26, 06:20 UTC | May 26, 19:55 UTC | 13h 35m |
| 2026-05-24 | CQN2362 | BKK → CKG | May 24, 18:25 UTC | May 24, 19:20 UTC | 55m |
| 2026-05-24 | CQN2361 | CKG → BKK | May 24, 15:50 UTC | May 24, 16:45 UTC | 55m |
| 2026-05-22 | CQN2362 | BKK → CKG | May 22, 18:30 UTC | May 22, 19:25 UTC | 55m |
| 2026-05-22 | CQN2361 | CKG → BKK | May 22, 15:50 UTC | May 22, 16:55 UTC | 1h 5m |
| 2026-05-19 | CQN2096 | SIN → CKG | May 19, 07:00 UTC | May 19, 07:25 UTC | 25m |
| 2026-05-18 | CQN2350 | - | May 18, 12:35 UTC | May 19, 05:15 UTC | 16h 39m |
| 2026-05-17 | CQN2362 | BKK → CKG | May 17, 18:25 UTC | May 18, 14:40 UTC | 20h 15m |
| 2026-05-17 | CQN2361 | CKG → BKK | May 17, 15:50 UTC | May 17, 16:45 UTC | 55m |
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-305P page for operator, model, and routing details .