What was found
(CAN) AFTER REPLACEMENT OF NR 3 CONSTANT SPEED UNIT, A FUNCTION CHECK WAS CARRIED OUT OF THE CONTROL SYS. IT WAS OBSERVED THAT ONCE YOU SELECTED MAX RPM YOU COULD NOT GO BACK TO MIN RPM OR FUEL SHUTOFF BECAUSE THE DATA PLATE ON THE AFT FACE OF THE CSU HAD BEEN LOCKED USING SAFETY CABLE AND THE FERRULE HAD SUFFICIENT LENGTH THAT INTERFERED WITH THE CONTROL. THE SAFETY CABLE WAS REMOVED AND THE SCREWS WERE LOCKED USING LOCKWIRE.