Docket No: FAA-20 14-0038 Directorate ID: 2013-SW-023-AD Originating Office Tr acking No.: Disposition Com ments

. Next Step: 0FRAN 0SN PRM 

### 0 These comments are in re sponse to an SNPRM



### 0 No Comments/Only Supporti ve Comments Received 

### -If this box is ch ecked, no signatures are required. No H as the referenced serv ice information been revised since the NPRM was issued? If yes, list latest revision and attach a copy. Note that changes beyond the scope of the previousl y published NP RM will require a new notice. Contact the Directorate focal point for guidance.

In s tructions: Summarize a ll comments by issue (not by commenter) and provide your recommended reso lu tion of eac h issue . All comments relating to the same issue should be discussed together. Do not list all of the issues from one commenter together. If changes to the AD are required based on the comments received , explain why and describe in detail what change(s) you recommend. Reference FAA- IR- M-8040.1C Chapter 9. I SSUE 1: Select one of the following: allow repetitve inspec ti ons 

### If

other, explain: Com menter(s): Two commenters stated that EASA and the manufacturer a ll ow for the M/R lead in g edge strip to fly with cracks so long as th e crack is wi thi n limits. T hey s tate that the leading edge strip is sacrifi cial and non-structural. They claim that the proposed 

### AD, which requ ires that if a crack is found it must be repaired or replaced, would result higher cost and greater out of service time for the operator without justifiable or measured increase in safety. What change t o th e AD act i on is r equested? They are requesting to allow the airc raft to fly w ith a crack in the M/R leading edge so long as the c rack is within the limites prescribed in the EASB. Why is the change requ ested or how is it justified? They believe it will r esult in hi gher cost and g r

eater out of service t ime for the operator without a justifiable or measured increase in safety. Do we agree? Yes lfYES, we agree because after further consideration and receiving the information that there is a maintenance procedure that requires the cracks be seals we ag ree that a crack can be tolerated so long as it is within limits. Make the follow ing changes to the AD: Paragraph e.(5) should read as follows : Ifthere is a crack within acceptable limits , within 15 hours TIS , seal the crack. If there is a crack beyond the acceptab le limits , before further flight repair or replace the blade. TfPARTIALLY AGREE , we agree with because We di sagr ee with because Make the following changes to the AD: If N O , we don't agree because

Pag e 1 of3ISSUE 2 : Select one of the following: 

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other, explain: Commenter(s): What change to the AD action i s requested? Why is the change req uested or how is it ju st ified? D o we ag re e? IfYES, we agree becau se Make the followi ng changes to the AD: I fP ARTIALLY AGREE, we agree w it h because We disa gree with because Make the follow in g changes to t he A D: I fN O , we don ' t ag ree because

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