AAIB investigation to DHC-8-402 Dash 8, G-PRPH
Smoke from APU starter/generator, Leeds Bradford Airport, 10 January 2020.
Summary:
After a normal engine start the Auxiliary Power Unit (APU) was switched off, however the ‘APU STARTER’ light illuminated. The aircraft systems were shut down and a re-start attempted using a ground power unit. During this time smoke was seen emanating from the rear of the aircraft so the crew initiated a rapid passenger disembarkation. Examination of the aircraft found that the APU starter/generator had overheated probably as a result of an APU contactor failure.
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Published 11 June 2020