sensors Mode-S transponder
78203B
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-224R · BOEING 737 MAX 8
- Hex
- 78203B
- Octal
- 36020073
- Decimal
- 7,872,571
- Country
- CN
- Tail
- B-224R
- Type
- B38M
- Flights observed
- 26
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 14h ago
Last known position
Country allocation
The ICAO 24-bit address 78203B 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 |
|---|---|---|---|
| CDG1151 | Shandong Airlines | 7 | 2026-05-22 |
| CDG1152 | Shandong Airlines | 5 | 2026-05-22 |
| CDG4718 | Shandong Airlines | 3 | 2026-05-08 |
| CDG8062 | Shandong Airlines | 2 | 2026-05-26 |
| CDG8061 | Shandong Airlines | 2 | 2026-05-26 |
| CDG8851 | Shandong Airlines | 1 | 2026-05-11 |
| CDG8078 | Shandong Airlines | 1 | 2026-05-20 |
| CDG8077 | Shandong Airlines | 1 | 2026-05-20 |
| CDG4682 | - | 1 | 2026-04-13 |
| CDG4681 | Shandong Airlines | 1 | 2026-04-13 |
| CDG2154 | Shandong Airlines | 1 | 2026-05-29 |
| CDG2153 | Shandong Airlines | 1 | 2026-05-29 |
Recent flights last 26
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CDG2154 | CGK → XMN | May 29, 17:35 UTC | May 29, 19:05 UTC | 1h 30m |
| 2026-05-29 | CDG2153 | XMN → CGK | May 29, 14:35 UTC | May 29, 15:25 UTC | 50m |
| 2026-05-26 | CDG8062 | SIN → TNA | May 26, 17:30 UTC | May 26, 17:59 UTC | 30m |
| 2026-05-26 | CDG8061 | TNA → SIN | May 26, 15:09 UTC | May 26, 15:20 UTC | 10m |
| 2026-05-22 | CDG8062 | SIN → TNA | May 22, 17:40 UTC | May 22, 17:55 UTC | 15m |
| 2026-05-22 | CDG1152 | HKG → TNA | May 22, 06:10 UTC | May 22, 15:35 UTC | 9h 25m |
| 2026-05-22 | CDG1151 | TNA → HKG | May 22, 04:10 UTC | May 22, 04:50 UTC | 40m |
| 2026-05-21 | CDG1151 | TNA → HKG | May 21, 05:55 UTC | May 22, 04:45 UTC | 22h 50m |
| 2026-05-20 | CDG8078 | KUL → TNA | May 20, 20:20 UTC | May 20, 20:35 UTC | 15m |
| 2026-05-20 | CDG8077 | TNA → KUL | May 20, 18:20 UTC | May 20, 18:35 UTC | 15m |
| 2026-05-17 | CDG1152 | HKG → TNA | May 17, 05:55 UTC | May 17, 06:10 UTC | 15m |
| 2026-05-16 | CDG1151 | TNA → HKG | May 16, 17:25 UTC | May 17, 04:20 UTC | 10h 55m |
| 2026-05-16 | CDG1152 | HKG → TNA | May 16, 05:56 UTC | May 16, 06:10 UTC | 15m |
| 2026-05-16 | CDG1151 | TNA → HKG | May 16, 03:45 UTC | May 16, 04:15 UTC | 30m |
| 2026-05-13 | CDG1152 | HKG → TNA | May 13, 06:00 UTC | May 13, 06:15 UTC | 15m |
| 2026-05-12 | CDG1151 | TNA → HKG | May 12, 17:50 UTC | May 13, 04:30 UTC | 10h 40m |
| 2026-05-12 | CDG8061 | TNA → SIN | May 12, 15:15 UTC | May 12, 15:35 UTC | 20m |
| 2026-05-11 | CDG8851 | TNA → HAK | May 11, 05:40 UTC | May 11, 08:40 UTC | 3h 0m |
| 2026-05-08 | CDG4718 | SHE → TAO | May 8, 12:00 UTC | May 8, 12:25 UTC | 25m |
| 2026-05-02 | CDG4718 | SHE → TAO | May 2, 12:00 UTC | May 2, 12:20 UTC | 20m |
| 2026-04-28 | CDG4718 | SHE → TAO | Apr 28, 12:10 UTC | Apr 28, 12:20 UTC | 10m |
| 2026-04-16 | CDG1152 | HKG → TNA | Apr 16, 06:40 UTC | Apr 16, 06:55 UTC | 15m |
| 2026-04-16 | CDG1151 | TNA → HKG | Apr 16, 05:09 UTC | Apr 16, 05:15 UTC | 5m |
| 2026-04-16 | CDG1151 | TNA → HKG | Apr 16, 04:34 UTC | Apr 16, 05:05 UTC | 30m |
| 2026-04-13 | CDG4682 | - | Apr 13, 06:00 UTC | Apr 13, 06:10 UTC | 10m |
| 2026-04-13 | CDG4681 | TAO → SZX | Apr 13, 03:45 UTC | Apr 13, 03:55 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-224R page for operator, model, and routing details .