Don't forget that less than 12 months before hand, Aer Lingus lost a sister Viscount 803 to EI-AOM (cn 178)
On June 22, 1967, EI-AOF (cn 176) crashed while on a training flight near Ashbourne in North County Dublin (a few kilomometers north of EIDW). The aircraft went into a spin from a low altitude and impacted the ground killing all 3 on board. The accident report blamed corrision around the tail and higlighted issues with the then Aer Lingus maintenance procuedures.
JAS