| 1. | Without an airworthiness certificate, aircraft are not permitted to fly.
|
| 2. | The jet spends six weeks at Edwards testing its basic airworthiness.
|
| 3. | That was a violation of airworthiness regulations, the agency said.
|
| 4. | It was his office that recommended that airworthiness certification be withdrawn.
|
| 5. | Further testing and research are needed in tilt-rotor airworthiness,
|
| 6. | Analysts say Concorde's airworthiness certification should speak for itself.
|
| 7. | Even with the greatest attention to airworthiness, accidents still occur.
|
| 8. | The ULF 2 received its Certificate of Airworthiness in February 1995.
|
| 9. | The plane undertook its airworthiness test on July 26, 1990.
|
| 10. | Airworthiness tests were conducted on the aircraft on 25 February 2016.
|
