| Project Number | Type | Registration with tick if current | ||
|---|---|---|---|---|
| LAA 400-15412 | Sling 4 | G-LDSA | ✔ | ![G-LDSA Airplane Factory Sling 4 [LAA 400-15412] Sywell 030917](https://farm5.staticflickr.com/4530/37652486695_b1e1bf1278.jpg) |
| LAA 400-15445 | Sling 4 | (not registered yet) | ||
| LAA 400-15463 | TAF Sling 4 | G-OSIV | ✔ | |
| LAA 400-15477 | Sling 4 | G-SLNG | ✔ | ![G-SLNG Airplane Factory Sling 4 [LAA 400-15477] Popham 030922](https://live.staticflickr.com/65535/52802629244_b47143aefb.jpg) |
| LAA 400-15510 | Sling 4 | G-CKZA | ✔ | |
| LAA 400-15721 | TAF Sling 4 | G-HWPK | ✔ | |