194002060 - S021 GEARBOX NOISE - AT TAKE OFF

With the engine running, there is noise at take off when the various gears are engaged: the noise changes as the speed changes.
Results of the tests
1REDUCTION GEAR CHECKAll OKProblems encounteredOperation
Check the reduction gearMore specifically:- it should not be worn or damaged;- there should not be excessive clearance;- the ring gear fastenings should not be slack.Move on to Step 2Reduction gear damagedRestore the clearance or, if necessary, replace the reduction gear
2SATELLITE CARRIER PIN CHECKAll OKProblems encounteredOperation
Check the wear of the satellite carrier pin or the housing in the differential casing    Op. 2110D20 DIFFERENTIAL INTERNAL CASING, REMOVED - DISMANTLING AND REASSEMBLY, CHECK PLANET AND SATELLITE GEARSEnd of diagnosisDifferential casing wearReplace the differential casing    Op. 2110D20 DIFFERENTIAL INTERNAL CASING, REMOVED - DISMANTLING AND REASSEMBLY, CHECK PLANET AND SATELLITE GEARS