What was found
PERFORMED TROUBLESHOOTING PER BOMBARDIER FIM REV 39 IAW AD 2009-60-12 PARAGRAPH(H)(B)(I) USING FIM REV 39 PER AMOC DATING MARCH 27, 2009, TR#27-012 PER AMOC DATED DEC 18, 2009 AND PA AD27-0520. REMOVED AND REPLACED RT BPSU IAW AMM 27-51-10. OPC GOOD. FEW CODES-FECU, R BPSU, WIRING, 1121A, 1122B. OK FOR SERVICE.