sensors Mode-S transponder
78232F
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-227X · BOEING 777-200LR
- Hex
- 78232F
- Octal
- 36021457
- Decimal
- 7,873,327
- Country
- CN
- Tail
- B-227X
- Type
- B77L
- Flights observed
- 128
- Distinct callsigns
- 10
- Country
- CN
- Last broadcast
- 1d ago
Current position
Country allocation
The ICAO 24-bit address 78232F 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 10 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| YZR7905 | - | 37 | 2026-05-27 |
| YZR7919 | - | 31 | 2026-05-20 |
| YZR7931 | - | 13 | 2026-05-27 |
| YZR7927 | - | 10 | 2026-05-20 |
| YZR7922 | - | 10 | 2026-05-28 |
| YZR7920 | Yangtze River Express | 9 | 2026-05-18 |
| YZR7906 | - | 6 | 2026-05-27 |
| YZR7932 | - | 5 | 2026-05-14 |
| YZR7929 | Yangtze River Express | 4 | 2026-04-20 |
| YZR7930 | - | 3 | 2026-05-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | YZR7922 | - | May 28, 16:50 UTC | May 28, 23:25 UTC | 6h 35m |
| 2026-05-27 | YZR7931 | - | May 27, 19:10 UTC | May 28, 13:10 UTC | 18h 0m |
| 2026-05-27 | YZR7931 | - | May 27, 16:55 UTC | May 28, 13:10 UTC | 20h 15m |
| 2026-05-27 | YZR7931 | - | May 27, 13:50 UTC | May 28, 13:10 UTC | 23h 20m |
| 2026-05-27 | YZR7906 | - | May 27, 13:25 UTC | May 28, 11:45 UTC | 22h 20m |
| 2026-05-27 | YZR7905 | - | May 27, 03:24 UTC | May 27, 09:55 UTC | 6h 31m |
| 2026-05-26 | YZR7905 | - | May 26, 14:24 UTC | May 27, 09:55 UTC | 19h 31m |
| 2026-05-26 | YZR7905 | - | May 26, 11:50 UTC | May 27, 09:55 UTC | 22h 6m |
| 2026-05-26 | YZR7905 | - | May 26, 10:50 UTC | May 27, 09:45 UTC | 22h 56m |
| 2026-05-25 | YZR7905 | - | May 25, 23:00 UTC | May 26, 05:59 UTC | 7h 0m |
| 2026-05-25 | YZR7905 | - | May 25, 09:50 UTC | May 26, 05:59 UTC | 20h 10m |
| 2026-05-25 | YZR7905 | - | May 25, 07:50 UTC | May 26, 05:59 UTC | 22h 9m |
| 2026-05-25 | YZR7905 | - | May 25, 06:15 UTC | May 26, 05:45 UTC | 23h 29m |
| 2026-05-23 | YZR7931 | - | May 23, 22:10 UTC | May 24, 16:00 UTC | 17h 50m |
| 2026-05-23 | YZR7931 | - | May 23, 20:20 UTC | May 24, 16:00 UTC | 19h 40m |
| 2026-05-23 | YZR7931 | - | May 23, 17:50 UTC | May 24, 16:00 UTC | 22h 10m |
| 2026-05-23 | YZR7931 | - | May 23, 16:30 UTC | May 24, 15:45 UTC | 23h 15m |
| 2026-05-23 | YZR7905 | - | May 23, 06:10 UTC | May 23, 13:05 UTC | 6h 55m |
| 2026-05-22 | YZR7905 | - | May 22, 16:50 UTC | May 23, 13:05 UTC | 20h 14m |
| 2026-05-22 | YZR7905 | - | May 22, 13:50 UTC | May 23, 13:05 UTC | 23h 14m |
| 2026-05-22 | YZR7906 | - | May 22, 13:10 UTC | May 23, 11:45 UTC | 22h 34m |
| 2026-05-22 | YZR7905 | - | May 22, 03:20 UTC | May 22, 10:10 UTC | 6h 50m |
| 2026-05-21 | YZR7905 | - | May 21, 11:50 UTC | May 22, 10:10 UTC | 22h 20m |
| 2026-05-21 | YZR7905 | - | May 21, 10:10 UTC | May 22, 09:45 UTC | 23h 35m |
| 2026-05-20 | YZR7919 | - | May 20, 13:40 UTC | May 21, 07:00 UTC | 17h 20m |
| 2026-05-20 | YZR7930 | - | May 20, 11:50 UTC | May 20, 12:00 UTC | 10m |
| 2026-05-20 | YZR7927 | - | May 20, 09:05 UTC | May 20, 09:25 UTC | 20m |
| 2026-05-19 | YZR7922 | - | May 19, 11:50 UTC | May 20, 07:25 UTC | 19h 36m |
| 2026-05-19 | YZR7922 | - | May 19, 10:40 UTC | May 20, 07:25 UTC | 20h 46m |
| 2026-05-18 | YZR7919 | - | May 18, 13:05 UTC | May 19, 06:35 UTC | 17h 29m |
| 2026-05-18 | YZR7919 | - | May 18, 11:10 UTC | May 19, 06:35 UTC | 19h 24m |
| 2026-05-18 | YZR7919 | - | May 18, 07:50 UTC | May 19, 06:35 UTC | 22h 44m |
| 2026-05-18 | YZR7920 | ANC → LAX | May 18, 07:20 UTC | May 19, 05:45 UTC | 22h 24m |
| 2026-05-17 | YZR7931 | - | May 17, 14:05 UTC | May 17, 20:50 UTC | 6h 45m |
| 2026-05-16 | YZR7931 | - | May 16, 21:50 UTC | May 17, 20:50 UTC | 23h 0m |
| 2026-05-16 | YZR7906 | - | May 16, 19:50 UTC | May 17, 19:45 UTC | 23h 55m |
| 2026-05-16 | YZR7905 | - | May 16, 10:16 UTC | May 16, 16:55 UTC | 6h 40m |
| 2026-05-15 | YZR7905 | - | May 15, 17:50 UTC | May 16, 16:55 UTC | 23h 6m |
| 2026-05-15 | YZR7906 | - | May 15, 17:10 UTC | May 16, 15:45 UTC | 22h 36m |
| 2026-05-15 | YZR7905 | - | May 15, 07:25 UTC | May 15, 14:05 UTC | 6h 40m |
| 2026-05-14 | YZR7905 | - | May 14, 14:15 UTC | May 15, 13:45 UTC | 23h 30m |
| 2026-05-14 | YZR7932 | - | May 14, 11:50 UTC | May 15, 11:10 UTC | 23h 20m |
| 2026-05-14 | YZR7932 | - | May 14, 11:05 UTC | May 15, 08:15 UTC | 21h 10m |
| 2026-05-13 | YZR7919 | - | May 13, 12:20 UTC | May 14, 06:20 UTC | 18h 0m |
| 2026-05-13 | YZR7919 | - | May 13, 04:35 UTC | May 14, 03:25 UTC | 22h 50m |
| 2026-05-11 | YZR7922 | - | May 11, 18:05 UTC | May 11, 21:35 UTC | 3h 30m |
| 2026-05-10 | YZR7919 | - | May 10, 20:20 UTC | May 11, 15:00 UTC | 18h 40m |
| 2026-05-10 | YZR7919 | - | May 10, 17:55 UTC | May 11, 15:00 UTC | 21h 5m |
| 2026-05-10 | YZR7919 | - | May 10, 15:49 UTC | May 11, 15:00 UTC | 23h 10m |
| 2026-05-10 | YZR7920 | ANC → LAX | May 10, 14:54 UTC | May 11, 13:45 UTC | 22h 50m |
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-227X page for operator, model, and routing details .