| 11. | During 1950 1953, it underwent a test program and was often modified.
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| 12. | Five prototypes were built, and put through a thorough flight test program.
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| 13. | The full test program may require the production of several such documents.
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| 14. | There is some overlap between the flight test program and early production.
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| 15. | A test program for wheat farmers is underway in seven states.
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| 16. | FD . 2 test program does not resume until August 1955.
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| 17. | France's nuclear test program in the South Pacific long has sparked fierce opposition.
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| 18. | Multiple test aircraft may be required on major aircraft development flight test programs.
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| 19. | These problems were corrected and the abort test program was completed.
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| 20. | Others have been signed up for another test program this winter in Massachusetts.
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