Complex sentence: The first flight was made from Brunswick airport on 25 April 1967; testing confirmed that the glass fibre structure was too flexible and at high speeds the SB-8 exhibited wing flutter, limiting its maximum permitted speed to.
Split into simpler sentences: The first flight was made from Brunswick airport on 25 April 1967. Testing confirmed that the glass fibre structure is too flexible and at high speeds the SB-8 exhibited wing flutter, limiting its maximum permitted speed to.