Coniston Water per hour () in "Blue Bird K4". Between 1956 and 1959 Sir Malcolm's son Donald Campbell set four successive records on the lake in "Bluebird K7", a hydroplane. In 1966 Donald Campbell decided that he needed to exceed 300 miles per hour (483 km/h) in order to retain the record. On 4 January 1967, he achieved a top speed of over 320 miles per hour () in "Bluebird K7" on the return leg of a record-breaking attempt. He then lost control of "Bluebird", which somersaulted and crashed, sinking rapidly. Campbell was killed instantly on impact when decapitated by the K7's
Riboflavin reductase (NAD(P)H) enzyme. This is followed by further protonation when the hydride attacks a nitrogen atom on the flavin mononucleotide3. Finally, the reduced flavin is released from flavin reductase. If this mechanism is indeed correct, it suggests that the reduction of flavin by flavin reductase is dependent on the enzyme binding first to NAD(P)H3. Riboflavin reductase (NAD(P)H) Riboflavin reductase (NAD(P)H) (, "NAD(P)H-FMN reductase", "Fre") is an enzyme with systematic name "riboflavin:NAD(P) oxidoreductase". This enzyme catalyses the following chemical reaction This enzyme catalyses the reduction of soluble flavins. The structure of the protein suggests that the enzymatic mechanism of flavin reductase is of