Sheffield Today 04/02/07 1500hrs
Was at Sheffield today, preflighting aircraft for return sector when heard loud bang.
Looked up & saw Schweizer 269 G-TAMA about 100feet away, on the apron, rocking violently from side to side with high RPM on rotors. Believe it was shortly to have gotten airborne. It came very close to toppling on its side. As Rotors slowed down, it became apparant all the blades were no longer evenly spaced and some major mechanical defect had occurred at rotor hub (guess thats what you call it....... i'm a fixed wing chap).
The fire services were in rapid attendance.
Anyone know anymore specifics?