sensors Mode-S transponder
781ECA
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-222G · BOEING 757-200
- Hex
- 781ECA
- Octal
- 36017312
- Decimal
- 7,872,202
- Country
- CN
- Tail
- B-222G
- Type
- B752
- Flights observed
- 46
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 781ECA 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 |
|---|---|---|---|
| HYT9103 | YTO Cargo Ltd | 11 | 2026-05-30 |
| HYT9129 | - | 6 | 2026-05-21 |
| HYT9104 | YTO Cargo Ltd | 6 | 2026-05-25 |
| HYT9089 | YTO Cargo Ltd | 6 | 2026-05-23 |
| HYT9068 | - | 4 | 2026-05-24 |
| HYT9130 | YTO Cargo Ltd | 3 | 2026-05-28 |
| HYT9090 | YTO Cargo Ltd | 3 | 2026-05-23 |
| HYT9157 | - | 2 | 2026-05-17 |
| HYT9067 | YTO Cargo Ltd | 2 | 2026-04-17 |
| HYT9158 | YTO Cargo Ltd | 1 | 2026-05-10 |
| HYT9076 | - | 1 | 2026-05-12 |
| HYT9075 | - | 1 | 2026-05-13 |
Recent flights last 46
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | HYT9103 | KMG → BOM | May 30, 01:40 UTC | May 30, 02:35 UTC | 55m |
| 2026-05-28 | HYT9130 | MAA → KMG | May 28, 13:05 UTC | May 28, 20:05 UTC | 7h 0m |
| 2026-05-25 | HYT9104 | BOM → KMG | May 25, 10:25 UTC | May 25, 10:55 UTC | 30m |
| 2026-05-25 | HYT9103 | KMG → BOM | May 25, 05:25 UTC | May 25, 05:45 UTC | 20m |
| 2026-05-24 | HYT9103 | KMG → BOM | May 24, 08:55 UTC | May 25, 03:30 UTC | 18h 35m |
| 2026-05-24 | HYT9068 | - | May 24, 06:55 UTC | May 25, 03:30 UTC | 20h 35m |
| 2026-05-24 | HYT9068 | - | May 24, 03:45 UTC | May 25, 02:30 UTC | 22h 45m |
| 2026-05-24 | HYT9068 | - | May 24, 00:45 UTC | May 24, 09:55 UTC | 9h 10m |
| 2026-05-23 | HYT9090 | LHE → KMG | May 23, 08:35 UTC | May 24, 07:20 UTC | 22h 46m |
| 2026-05-23 | HYT9090 | LHE → KMG | May 23, 07:15 UTC | May 24, 03:55 UTC | 20h 40m |
| 2026-05-23 | HYT9089 | KMG → LHE | May 23, 02:50 UTC | May 23, 05:15 UTC | 2h 25m |
| 2026-05-21 | HYT9129 | - | May 21, 13:40 UTC | May 21, 20:00 UTC | 6h 20m |
| 2026-05-20 | HYT9104 | BOM → KMG | May 20, 07:05 UTC | May 20, 09:40 UTC | 2h 35m |
| 2026-05-20 | HYT9103 | KMG → BOM | May 20, 04:50 UTC | May 20, 05:15 UTC | 25m |
| 2026-05-19 | HYT9103 | KMG → BOM | May 19, 08:35 UTC | May 20, 03:10 UTC | 18h 35m |
| 2026-05-19 | HYT9090 | LHE → KMG | May 19, 06:45 UTC | May 20, 03:10 UTC | 20h 25m |
| 2026-05-19 | HYT9089 | KMG → LHE | May 19, 02:35 UTC | May 19, 05:00 UTC | 2h 25m |
| 2026-05-18 | HYT9089 | KMG → LHE | May 18, 08:35 UTC | May 19, 05:00 UTC | 20h 24m |
| 2026-05-18 | HYT9089 | KMG → LHE | May 18, 06:55 UTC | May 19, 05:00 UTC | 22h 4m |
| 2026-05-17 | HYT9157 | - | May 17, 13:31 UTC | May 18, 05:10 UTC | 15h 40m |
| 2026-05-14 | HYT9129 | - | May 14, 13:30 UTC | May 14, 20:15 UTC | 6h 45m |
| 2026-05-13 | HYT9130 | MAA → KMG | May 13, 18:50 UTC | May 14, 15:25 UTC | 20h 35m |
| 2026-05-13 | HYT9129 | - | May 13, 14:35 UTC | May 14, 14:25 UTC | 23h 50m |
| 2026-05-13 | HYT9129 | - | May 13, 07:55 UTC | May 13, 20:30 UTC | 12h 35m |
| 2026-05-13 | HYT9075 | - | May 13, 02:45 UTC | May 13, 06:35 UTC | 3h 50m |
| 2026-05-12 | HYT9076 | - | May 12, 07:35 UTC | May 12, 08:15 UTC | 40m |
| 2026-05-11 | HYT9129 | - | May 11, 13:45 UTC | May 12, 06:00 UTC | 16h 16m |
| 2026-05-10 | HYT9158 | DEL → KMG | May 10, 08:54 UTC | May 10, 10:49 UTC | 1h 55m |
| 2026-05-10 | HYT9157 | - | May 10, 03:40 UTC | May 10, 07:04 UTC | 3h 25m |
| 2026-05-06 | HYT9103 | KMG → BOM | May 6, 02:40 UTC | May 6, 10:40 UTC | 8h 0m |
| 2026-05-04 | HYT9129 | - | May 4, 13:35 UTC | May 4, 20:50 UTC | 7h 16m |
| 2026-05-03 | HYT9104 | BOM → KMG | May 3, 08:30 UTC | May 3, 09:45 UTC | 1h 15m |
| 2026-05-03 | HYT9104 | BOM → KMG | May 3, 07:00 UTC | May 3, 07:10 UTC | 10m |
| 2026-05-03 | HYT9103 | KMG → BOM | May 3, 04:35 UTC | May 3, 04:50 UTC | 15m |
| 2026-05-03 | HYT9103 | KMG → BOM | May 3, 01:50 UTC | May 3, 03:10 UTC | 1h 20m |
| 2026-05-01 | HYT9104 | BOM → KMG | May 1, 11:30 UTC | May 1, 12:30 UTC | 1h 0m |
| 2026-05-01 | HYT9103 | KMG → BOM | May 1, 07:45 UTC | May 1, 08:15 UTC | 30m |
| 2026-05-01 | HYT9103 | KMG → BOM | May 1, 04:25 UTC | May 1, 06:10 UTC | 1h 45m |
| 2026-04-19 | HYT9130 | MAA → KMG | Apr 19, 14:40 UTC | Apr 19, 21:40 UTC | 7h 0m |
| 2026-04-18 | HYT9089 | KMG → LHE | Apr 18, 03:25 UTC | Apr 18, 04:50 UTC | 1h 25m |
| 2026-04-18 | HYT9089 | KMG → LHE | Apr 18, 02:20 UTC | Apr 18, 03:20 UTC | 1h 0m |
| 2026-04-17 | HYT9068 | - | Apr 17, 09:45 UTC | Apr 17, 10:50 UTC | 1h 5m |
| 2026-04-17 | HYT9067 | KMG → KHI | Apr 17, 03:20 UTC | Apr 17, 03:45 UTC | 25m |
| 2026-04-17 | HYT9067 | KMG → KHI | Apr 17, 02:35 UTC | Apr 17, 03:15 UTC | 40m |
| 2026-04-13 | HYT9104 | - | Apr 13, 10:35 UTC | Apr 13, 11:50 UTC | 1h 15m |
| 2026-04-13 | HYT9103 | KMG → BOM | Apr 13, 02:45 UTC | Apr 13, 04:00 UTC | 1h 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-222G page for operator, model, and routing details .