Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes

March 10, 2005 Docket Management Facility, U.S. Department of Transportation, Attention: Docket No. FAA-2005-20110, Directorate Identifier 2004-NM-114-AD, 400 Seventh Street SW., Nassif Building, Room PL¿401, Washington, DC 20590. Subject: B737 Engine Strut Aft Fairings - Proposed Rule Ladies/Gentlemen: FAA proposes to adopt a new airworthiness directive (AD) for Boeing Model 737-600, -700, -700C, -800 and -900 series airplanes as listed in the referenced Boeing service bulletin. This proposed AD would require repetitive general visual inspections for dirt, debris, and drain blockage and cleaning of the aft fairing cavities of the engine struts; and modification of the aft fairings, which would terminate the repetitive general visual inspections. ATA appreciates the opportunity to comment on this proposed rule. Our members generally support the intent of the rulemaking; however, additional review and clarification would be desirable on the attached comments. Specifically: ¿Terminating Action: There is a problem in achieving the dimensions in the terminating action procedures. These need either to be changed or further clarification needs to be provided on why such a tight tolerance hole is required for this application. Your serious consideration of these observations and comments would be greatly appreciated. Sincerely, Robert Peel Director of Quality Air Transport Association