Hi
Probably the horn unit, as the upward identification lamp was higher up.
voltage regulator was in the rear fuselage frame.
cheers
jerry

Hi Jerry, always a pleasure hearing from you…

The UIL was mounted on top the main canopy from the drawings we have…

Does anyone know if the horn was used all through the Whirlys service, I only ask as on some AC it appears to be missing…

I have a photo of one (Thanks to Air Ministry, cheers Alan) are there any others that we could have a copy of please…

Mr Blue

UIL Number 52…