Node A6 · Acronym decoder
FRR
Flight Readiness Review
What it actually means
The final review before a flight test or launch, confirming the vehicle, range, procedures, and people are ready and that residual risks are known and accepted by the right authority. Its power is the explicit go/no-go: someone with their name on the decision says "fly".
Where you'll meet it
Aerospace test campaigns and launch operations.