What was found
A/F DID NOT ARM AFTER ADDING POWER FOR TAKEOFF. TAKEOFF ABORTED AROUND 60 KNOTS. REMOVED FROM SERVICE. NO FAULTS PRESENT IN CDS, FOLLOWED Q400 AMM 61-20-00-710-810 PART A OPS TEST PASSED. REF Q400 MCN 661292-001 ISSUE 1. DUE TO SIG EVENT ENGINE RUN OF THE AUTO- FEATHER OPS CHECK HAS BEEN REQUESTED. FOUND AUTO FEATHER SELECT SWITCH TO NOT LATCH PROPERLY, R&R AUTO FEATHER SELECT SWITCH IAW Q400 AMM 31-10-01-000-802/400-802. OPS TESTS GOOD. PERFORMED OPS TEST OF THE PROP AUTO FEATHER & UPTRIM SYSTEM WITH ENGINES RUNNING IAW Q400 AMM 61-20-0-710-810 OPS TEST GOOD, NO FAULTS IN CDS, NO FAULTS ON ED. NO FURTHER DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.