There was a Gazelle lost on Route 5 out of Aldergrove en-route to Lisburn - night, poor Wx, no gogs (early 80's). It was put down to inadvertenet IMC.
I have flown the Gaz with SAS and the very primative stick feel system: SAS was OK but the stick feel - IMO - was crap, we switched it off most of the time.