AIRCRAFT PROGRAM
| Lift type | Lighter than air | ||
| Construction type | Factory-built | ||
| Control type | Piloted | ||
| Engine type | Piston | ||
| Application | Utility | ||
| Search for other aircraft programs with these properties on the Aircraft Programs directory page. | |||
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Helium filled non-rigid airship. Includes the variant A-170LS Lightsign. Surveillance version known as Spector 50. AirSign acquired program from American Blimp Corporation in 2017, then Skyship Services acquired assets and IP in 2023.
| Variant | Launch/First flight | Production end | |
| American Blimp Lightship A-170 | 2006 / 2006 | Patrol airship, nicknamed the Holdenberg. |
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