Narrative:

During the replacement of bearings and brushes in both starter-generators, the communicator was turned down using an unapprove lathe. This lathe uses ctring cone to align the armature to the lathe. The component maintenance manual call for a tailstock adapter with a bearing. The armature fit inside the bearing to align it with the lathe. This was found by doing paperwork review. The other starter-generators of similar design and of the same manufacture does not require this adapter, only this one -- xyxx power system, mfr P/north wvx-001. The aircraft operator has been notified and is scheduled for overhaul replacement of both starter-generators. The aircraft registration is xyz serial number XXX.

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Original NASA ASRS Text

Title: A BEECH 300 WAS OPERATED IN NON COMPLIANCE WITH BOTH STARTER-GENERATOR UNITS REWORKED USING IMPROPER TOOLING.

Narrative: DURING THE REPLACEMENT OF BEARINGS AND BRUSHES IN BOTH STARTER-GENERATORS, THE COMMUNICATOR WAS TURNED DOWN USING AN UNAPPROVE LATHE. THIS LATHE USES CTRING CONE TO ALIGN THE ARMATURE TO THE LATHE. THE COMPONENT MAINT MANUAL CALL FOR A TAILSTOCK ADAPTER WITH A BEARING. THE ARMATURE FIT INSIDE THE BEARING TO ALIGN IT WITH THE LATHE. THIS WAS FOUND BY DOING PAPERWORK REVIEW. THE OTHER STARTER-GENERATORS OF SIMILAR DESIGN AND OF THE SAME MANUFACTURE DOES NOT REQUIRE THIS ADAPTER, ONLY THIS ONE -- XYXX PWR SYS, MFR P/N WVX-001. THE ACFT OPERATOR HAS BEEN NOTIFIED AND IS SCHEDULED FOR OVERHAUL REPLACEMENT OF BOTH STARTER-GENERATORS. THE ACFT REGISTRATION IS XYZ SERIAL NUMBER XXX.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.