unflyable

Instead of pumping billions into an unflyable old style government rocket that has more in common with the 1960s than the 21st century, NASA will focus on developing ways to travel quickly between the Earth, Moon, Mars and the asteroids, and support work on such ideas as how to re-fuel rockets in space rather than throwing them away.

Rick Tumlinson: NASA's Constellation Hallucination and the Congressional Money Drug Rick Tumlinson 2010

However cargo Dragon flights to the ISS starting some time in the 2010-2015 'gap' is almost inevitable, barring an enormous setback (such as Falcon-9 or Dragon proving unflyable for some technical reason).

Constellation Drags - SpaceX Moves Ahead - NASA Watch 2008

A human pilot could not react quickly enough to do this; under the earlier manual technology, an inherently unstable aircraft would be unflyable.

The Nature of Technology W. Brain Arthur 2009

CHRIS.CALLAHAN, U.S. ARMY: We made a conscious decision to land the aircraft because eventually it would become unflyable if the transmission seized.

CNN Transcript May 29, 2005 2005

Fellow NASA test pilot Bruce Peterson relates, I made the first flight of the HL-10 lifting body in 1966 and it was almost unflyable.

First Man James R. Hansen 2005

CHRIS.CALLAHAN, U.S. ARMY: We made a conscious decision to land the aircraft, because eventually it would become unflyable if the transmission seized.

CNN Transcript Jul 3, 2005 2005

Fellow NASA test pilot Bruce Peterson relates, I made the first flight of the HL-10 lifting body in 1966 and it was almost unflyable.

First Man James R. Hansen 2005

Fellow NASA test pilot Bruce Peterson relates, I made the first flight of the HL-10 lifting body in 1966 and it was almost unflyable.

First Man James R. Hansen 2005

Fellow NASA test pilot Bruce Peterson relates, I made the first flight of the HL-10 lifting body in 1966 and it was almost unflyable.

First Man James R. Hansen 2005

I did not think that the machine would be unflyable, but it might be very much damaged.

The Rainbow and the Rose Shute, Nevil, 1899-1960 1958