AD NUMBER: 2006-20-07
MANUFACTURER: Rolls Royce
SUBJECT: Airworthiness Directive 2006-20-07
SUMMARY: The FAA is adopting a new airworthiness directive
(AD) for Rolls-Royce Corporation (RRC) models 250-C30, 250-40, and
250-C47 series turboshaft engines with a third-stage turbine wheel,
part number (P/N) 6898663 or P/N 23065843 installed, or a
fourth-stage turbine wheel, P/N6892764 or P/N 23066744,
installed.