As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2170 AUTO FEATHER SYSTEM WILL NOT TEST, FOUND 6121-S9 BAD. REPLACED SWITCH IAW DASH 8-200 WDW 61-21-01, SHEET 2 OF 6. PERFORMED AUTO FEATHER SYSTEM AND POWER UPTRIM TEST IAW DASH 8-200 ENGINE RIGGING MANUAL PARAGRAPH 6-8. TESTS GOOD. AIRCRAFT RETURNED TO SERVICE.