Helicopter Westland Whirlwind SRS.1 Serial wa 39 Register G-ANUK used by Bristow. Aircraft history and location Aircraft History G-ANUK Bristow Westland Whirlwind Ser.1, c/n WA39, ff:? del Bristow Helicopters Ltd as G-ANUK, unk. Westland Whirlwind SRS.3 conv to Whirlwind Ser.3, unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send