Fri, Jul 06, 2012
AD NUMBER: 2012-11-14
PRODUCT: All Pratt & Whitney Canada (P&WC) PW118, PW118A, PW118B, PW119B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW123AF, PW124B, PW125B, PW126A, PW127, PW127E, PW127F, PW127G, and PW127M turboprop engines.
SUBJECT: Airworthiness Directive 2012-11-14
ACTION: Final Rule, Request for Comments
SUMMARY: This AD requires initial and repetitive inspections of certain serial numbers (S/Ns) of propeller shafts for cracks and removal from service if found cracked. This AD was prompted by reports of two propeller shafts found cracked at time of inspection during maintenance. We are issuing this AD to detect propeller shaft cracks, which could cause failure of the shaft, propeller release, and loss of control of the airplane.
DATES: This AD becomes effective July 20, 2012. Comments are due no later than August 20, 2012.
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