It was Beatrice ' Tilly ' Shilling who came up with a simple device which could be fitted without taking the aircraft out of service .
Beatrice ' Tilly ' Shilling is an engineer working at the Royal Aircraft Establishment at Farnborough .
It was Beatrice ' Tilly ' Shilling , an engineer working at the Royal Aircraft Establishment at Farnborough , who came up with a simple device which could be fitted without taking the aircraft out of service .