Answer: testrun

AnswerCrossword Clue
TESTRUNTryout
TESTRUNShakedown cruise
TESTRUNTrial
TESTRUNTrial in simulated conditions
TESTRUNIn-house trial
TESTRUNBeta release, e.g.
TESTRUNExperimental trial
TESTRUNExperimental drive.
TESTRUNShakedown
TESTRUNBeta release, essentially
TESTRUNDebugging procedure
TESTRUNBeta release, in essence