sensors Mode-S transponder
780E3D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-6026 · BOEING 737-800
- Hex
- 780E3D
- Octal
- 36007075
- Decimal
- 7,867,965
- Country
- CN
- Tail
- B-6026
- Type
- B738
- Flights observed
- 33
- Distinct callsigns
- 12
- Country
- CN
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 780E3D 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 |
|---|---|---|---|
| OKA2755 | - | 8 | 2026-06-29 |
| OKA2756 | - | 5 | 2026-06-25 |
| OKA3100 | - | 4 | 2026-07-15 |
| OKA2930 | Okay Airways | 3 | 2026-05-18 |
| OKA3112 | - | 2 | 2026-06-05 |
| OKA3064 | - | 2 | 2026-07-13 |
| OKA3022 | Okay Airways | 2 | 2026-05-30 |
| OKA2931 | Okay Airways | 2 | 2026-06-04 |
| OKA2764 | - | 2 | 2026-07-14 |
| OKA3021 | Okay Airways | 1 | 2026-04-25 |
| OKA2953 | Okay Airways | 1 | 2026-06-06 |
| OKA2763 | - | 1 | 2026-07-14 |
Recent flights last 33
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-15 | OKA3100 | - | Jul 15, 16:10 UTC | Jul 15, 16:30 UTC | 20m |
| 2026-07-14 | OKA2764 | - | Jul 14, 04:45 UTC | Jul 14, 04:55 UTC | 10m |
| 2026-07-14 | OKA2763 | - | Jul 14, 03:25 UTC | Jul 14, 03:40 UTC | 15m |
| 2026-07-13 | OKA3064 | - | Jul 13, 07:55 UTC | Jul 13, 08:05 UTC | 10m |
| 2026-06-29 | OKA2755 | - | Jun 29, 01:14 UTC | Jun 29, 14:14 UTC | 13h 0m |
| 2026-06-25 | OKA2756 | - | Jun 25, 01:40 UTC | Jun 25, 14:14 UTC | 12h 35m |
| 2026-06-23 | OKA2755 | - | Jun 23, 01:50 UTC | Jun 23, 14:10 UTC | 12h 20m |
| 2026-06-21 | OKA2756 | - | Jun 21, 14:10 UTC | Jun 21, 14:19 UTC | 10m |
| 2026-06-21 | OKA2755 | - | Jun 21, 01:49 UTC | Jun 21, 01:59 UTC | 10m |
| 2026-06-19 | OKA2756 | - | Jun 19, 01:34 UTC | Jun 19, 14:15 UTC | 12h 40m |
| 2026-06-17 | OKA2755 | - | Jun 17, 01:45 UTC | Jun 17, 14:20 UTC | 12h 35m |
| 2026-06-15 | OKA2755 | - | Jun 15, 01:25 UTC | Jun 15, 14:10 UTC | 12h 45m |
| 2026-06-12 | OKA2755 | - | Jun 12, 01:20 UTC | Jun 12, 14:15 UTC | 12h 55m |
| 2026-06-10 | OKA2755 | - | Jun 10, 01:20 UTC | Jun 10, 14:35 UTC | 13h 15m |
| 2026-06-06 | OKA2953 | CKG → ACX | Jun 6, 04:45 UTC | Jun 6, 04:55 UTC | 10m |
| 2026-06-05 | OKA3112 | - | Jun 5, 06:50 UTC | Jun 5, 07:10 UTC | 20m |
| 2026-06-04 | OKA2931 | CSX → ZHA | Jun 4, 06:15 UTC | Jun 4, 06:25 UTC | 10m |
| 2026-05-30 | OKA3022 | XAI → TSN | May 30, 07:55 UTC | May 30, 08:05 UTC | 10m |
| 2026-05-29 | OKA3100 | - | May 29, 15:05 UTC | May 29, 15:25 UTC | 20m |
| 2026-05-27 | OKA3100 | - | May 27, 15:25 UTC | May 27, 15:45 UTC | 20m |
| 2026-05-18 | OKA2930 | ZUH → KHN | May 18, 08:15 UTC | May 18, 08:25 UTC | 10m |
| 2026-05-14 | OKA2930 | ZUH → KHN | May 14, 10:15 UTC | May 14, 10:31 UTC | 15m |
| 2026-05-09 | OKA2930 | ZUH → KHN | May 9, 08:20 UTC | May 9, 08:30 UTC | 10m |
| 2026-05-08 | OKA3112 | - | May 8, 06:59 UTC | May 8, 07:24 UTC | 25m |
| 2026-05-07 | OKA2931 | CSX → ZHA | May 7, 06:00 UTC | May 7, 06:15 UTC | 15m |
| 2026-05-05 | OKA2764 | - | May 5, 04:50 UTC | May 5, 05:00 UTC | 10m |
| 2026-04-30 | OKA3100 | - | Apr 30, 15:40 UTC | Apr 30, 16:05 UTC | 25m |
| 2026-04-28 | OKA3022 | XAI → TSN | Apr 28, 08:05 UTC | Apr 28, 08:15 UTC | 10m |
| 2026-04-26 | OKA3064 | SZX → EHU | Apr 26, 07:55 UTC | Apr 26, 08:05 UTC | 10m |
| 2026-04-25 | OKA3021 | TSN → XAI | Apr 25, 06:10 UTC | Apr 25, 06:20 UTC | 10m |
| 2026-04-16 | OKA2756 | TSN → TFU | Apr 16, 14:25 UTC | Apr 16, 14:40 UTC | 15m |
| 2026-04-16 | OKA2755 | - | Apr 16, 01:25 UTC | Apr 16, 01:40 UTC | 15m |
| 2026-04-14 | OKA2756 | TSN → TFU | Apr 14, 14:05 UTC | Apr 14, 14:15 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-6026 page for operator, model, and routing details .