The Viking is a bit before my time, but the quality manager of a maintenance company, once told me of his personal experience on this very subject.
He worked for a Southend based Viking operator as a licenced engineer & was taxiing one of the company's Vikings back to the hangar. As he passed the ATEL hangar he applied the brakes a little too hard, the aircraft tipped onto its nose, but then righted itself. If I remember correctly the nose & props were damaged. The engineer, shut down & went into the ATEL hangar to enquire about getting a job, following a successful conversation he returned to the Viking, fired it up & continued to his employers hangar. After reporting the incident he was promptly sacked. This marked the start of a long & successful career at ATEL!