What was found
NR 1 PEC CAUTION MESSAGE WITH POWERPLANT MESSAGE ON CLIMB ABOVE 10,000`. NR 1 PROPELLER WENT TO 1050 TO 1060 NP. UNABLE TO GET PROPELLER UNDER 1020 NP. NR 1 ENG SHUTDOWN IAW EA CHECKLIST. NR 1 PROPELLER OVERSPEED ABOVE 1050-1060 UNCONTROLLABLE FAULT CODES: NR 1 160A LOCAL NP MPU EXTRA PULSES 160B LOCAL NP MPU EXTRA PULSES 162A NP DISAGREES WITH QA AND QB SPEEDS 162B NP DISAGREES WITH QA AND QB SPEEDS NR 2 156A MPU 7P IN EXTRA/MISSING PULSES 156B MPU 7P IN EXTRA/MISSING PULSES MX REPLACED BROKEN BUSS BAR ON NR 1 PROPELLER. ACFT RTS SB D8400-61-66 IS RELATED TO THIS ISSUE.