On 14 September 2021 the crew of a Saab S340B being used for type conversion training purposes were unable to cross start the left engine after it had been temporarily shut down to demonstrate single engine handling performance because the right starter-generator failed. A MAYDAY was declared and after prompt electrical load shedding, sufficient battery power remained to complete a successful diversion. The starter-generator failure was suspected to be attributable to its use whilst in service with a previous operator to support multiple starts at intervals which were insufficient to allow the unit to cool.