AD 2001-17-15 66 FR 44945

This amendment supersedes an existing airworthiness directive (AD), AD 95-09-02, that applies to Honeywell International Inc. (formerly AlliedSignal Inc. and Textron Lycoming Inc.) LTS101 series turboshaft and LTP101 series turboprop engines. That AD superseded priority letter AD 94-19-01 and currently requires initial and repetitive inspections of the engine fuel pump internal drive splines for wear and replacement of engine fuel pumps that exhibit wear beyond specified limits.This amendment requires a reduction in inspection intervals for the engine fuel pump internal drive splines. This amendment is prompted by a report from the engine manufacturer that 13 percent of the pumps installed on aircraft that were returned from the field for the required 900-hour interval inspection revealed excessive internal drive spline wear. The actions specified by this AD are intended to prevent worn splines in fuel pumps which could cause engine fuel pump failure, which can result in total engine power loss and possible loss of the aircraft.