airworthiness · Rule · Final rule; request for comments. · Published 2006-09-14 · Effective 2006-09-29 · 71 FR 54195
Document
Document number
E6-15139
Federal Register citation
71 FR 54195
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Pratt & Whitney Canada Turboprop
Publication date
2006-09-14
Effective date
2006-09-29
FAA docket
Docket No. FAA-2006-23807
Abstract
The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney Canada (P&WC) Models PW118, PW118A, PW118B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW124B, PW125B, PW127, and PW127E turboprop engines with certain propeller shafts installed. This AD requires before further flight, replacing certain serial-numbered propeller shafts, and performing initial and repetitive visual inspections on others. This AD results from two reports of through-cracks in the propeller shaft. We are issuing this AD to detect through-cracks in the propeller shaft. Through-cracks at the No. 19 bearing area of the propeller shaft could result in uncontained engine failure and damage to the airplane.