Boeing Model 737 100, 200, 200C, 300, 400, and 500 Series Airplanes

FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD would require repetitive detailed and eddy current inspections to detect cracking of the frame web around the cutout for the doorstop intercostals strap at the aft side of the Body station 291.5 frame at stringer 16R, and corrective actions if necessary. 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: ¿Cost and Compliance Estimates ¿ No account is given for gaining access and closing. The inspections in most cases will not be accomplished at a heavy check. Therefore additional man hours need to be considered outside normal maintenance operations. Your serious consideration of these observations and comments would be greatly appreciated. Sincerely, Robert Peel Director of Quality Air Transport Association

Subject: A300B737 Body Station 291.5 Doorstop Intercostal Strap ¿ Additional Comments to Proposed Rule Ladies/Gentlemen: FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD would require repetitive detailed and eddy current inspections to detect cracking of the frame web around the cutout for the doorstop intercostals strap at the aft side of the Body station 291.5 frame at stringer 16R, and corrective actions if necessary. ATA appreciates the opportunity to further 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 comment. Specifically: ¿Terminating Action ¿ It would be helpful if terminating action instructions were provided to eliminate the need for the repeat inspections or include these inspections in the structural inspection document instructions. Your serious consideration of these observations and comments would be greatly appreciated. Sincerely, Robert Peel Director of Quality Air Transport Association