It'll never fly

it will never fly

There's no chance that something will work or be successful. He wants to work from home full time, but it will never fly with the bosses. It's an interesting concept, but it would never fly with ordinary consumers.
See also: fly, never, will
Farlex Dictionary of Idioms.

It'll never fly.

Fig. It will never work!; It will never be approved! (Refers originally to an evaluation of an unlikely-looking aircraft of some type.) l have read your report and studied your proposal. It'll never fly. Your design for a new electric automobile is interesting, but it'll never fly!
See also: fly, never
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • it will never fly
  • go shares
  • be at work
  • be your own master/mistress
  • be (one's) own master
  • mistress
  • I've got work to do
  • be (one's) own mistress
  • go about your work
  • hired hand
References in periodicals archive
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In terms of assembly, you can hack this together for a prototype, but it'll never fly in a production environment.
Via-in-pad myths: when it comes to heat transfer, bigger is not always better
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It'll never fly with that ridiculous name Fort Fadeaways.
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