sensors Mode-S transponder
78001D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-7088 · BOEING 737-700
- Hex
- 78001D
- Octal
- 36000035
- Decimal
- 7,864,349
- Country
- CN
- Tail
- B-7088
- Type
- B737
- Flights observed
- 29
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 23h ago
Current position
Country allocation
The ICAO 24-bit address 78001D 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 |
|---|---|---|---|
| RLH5051 | - | 6 | 2026-07-07 |
| RLH5302 | - | 5 | 2026-07-15 |
| RLH5052 | - | 3 | 2026-07-07 |
| RLH5038 | - | 3 | 2026-07-17 |
| RLH5037 | - | 3 | 2026-07-17 |
| RLH5301 | - | 2 | 2026-07-13 |
| RLH5042 | - | 2 | 2026-05-05 |
| RLH5343 | Ruili Airlines | 1 | 2026-07-21 |
| RLH5328 | - | 1 | 2026-07-21 |
| RLH5321 | - | 1 | 2026-07-18 |
| RLH5097 | - | 1 | 2026-05-02 |
| RLH5041 | - | 1 | 2026-05-05 |
Recent flights last 29
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-21 | RLH5343 | JHG → NNG | Jul 21, 23:15 UTC | Jul 22, 04:15 UTC | 5h 0m |
| 2026-07-21 | RLH5328 | - | Jul 21, 07:50 UTC | Jul 21, 08:05 UTC | 15m |
| 2026-07-18 | RLH5321 | - | Jul 18, 05:05 UTC | Jul 19, 00:45 UTC | 19h 40m |
| 2026-07-17 | RLH5038 | - | Jul 17, 12:25 UTC | Jul 18, 05:10 UTC | 16h 46m |
| 2026-07-17 | RLH5037 | - | Jul 17, 11:10 UTC | Jul 17, 11:35 UTC | 25m |
| 2026-07-15 | RLH5302 | - | Jul 15, 02:25 UTC | Jul 15, 04:35 UTC | 2h 10m |
| 2026-07-13 | RLH5302 | - | Jul 13, 04:25 UTC | Jul 14, 01:30 UTC | 21h 5m |
| 2026-07-13 | RLH5301 | - | Jul 13, 02:20 UTC | Jul 13, 04:40 UTC | 2h 20m |
| 2026-07-12 | RLH5302 | - | Jul 12, 04:10 UTC | Jul 13, 02:40 UTC | 22h 30m |
| 2026-07-12 | RLH5302 | - | Jul 12, 02:10 UTC | Jul 12, 05:10 UTC | 3h 0m |
| 2026-07-07 | RLH5052 | - | Jul 7, 08:30 UTC | Jul 8, 04:45 UTC | 20h 15m |
| 2026-07-07 | RLH5051 | - | Jul 7, 00:10 UTC | Jul 7, 08:55 UTC | 8h 45m |
| 2026-07-05 | RLH5038 | - | Jul 5, 12:35 UTC | Jul 5, 12:55 UTC | 20m |
| 2026-07-05 | RLH5037 | - | Jul 5, 10:50 UTC | Jul 5, 11:20 UTC | 30m |
| 2026-07-03 | RLH5038 | - | Jul 3, 13:20 UTC | Jul 3, 13:50 UTC | 30m |
| 2026-07-03 | RLH5037 | - | Jul 3, 11:50 UTC | Jul 3, 12:25 UTC | 35m |
| 2026-06-30 | RLH5051 | - | Jun 30, 00:00 UTC | Jun 30, 08:55 UTC | 8h 55m |
| 2026-06-27 | RLH5051 | - | Jun 27, 03:20 UTC | Jun 27, 09:09 UTC | 5h 50m |
| 2026-06-25 | RLH5052 | - | Jun 25, 20:09 UTC | Jun 26, 00:30 UTC | 4h 20m |
| 2026-06-22 | RLH5051 | - | Jun 22, 15:29 UTC | Jun 23, 08:59 UTC | 17h 30m |
| 2026-06-18 | RLH5051 | - | Jun 18, 03:45 UTC | Jun 18, 09:10 UTC | 5h 25m |
| 2026-06-10 | RLH5302 | - | Jun 10, 15:00 UTC | Jun 10, 16:00 UTC | 1h 0m |
| 2026-06-10 | RLH5301 | - | Jun 10, 13:10 UTC | Jun 10, 13:20 UTC | 10m |
| 2026-05-05 | RLH5042 | - | May 5, 07:50 UTC | May 5, 08:45 UTC | 55m |
| 2026-05-05 | RLH5041 | - | May 5, 05:35 UTC | May 5, 06:25 UTC | 50m |
| 2026-05-02 | RLH5097 | - | May 2, 01:20 UTC | May 2, 01:30 UTC | 10m |
| 2026-04-25 | RLH5052 | - | Apr 25, 07:15 UTC | Apr 25, 07:25 UTC | 10m |
| 2026-04-18 | RLH5051 | - | Apr 18, 05:35 UTC | Apr 18, 05:45 UTC | 10m |
| 2026-04-14 | RLH5042 | - | Apr 14, 07:00 UTC | Apr 14, 07:10 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-7088 page for operator, model, and routing details .