![]() ![]() End Further Info End Preamble Start Supplemental Information SUPPLEMENTARY INFORMATION:Ī proposal to amend part 39 of the Federal Aviation Regulations ( 14 CFR part 39) to include an airworthiness directive (AD) that is applicable to all Boeing Model B-17E, F, and G airplanes was published in the Federal Register on Ma( 60 FR 14233). Rehrl, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98055-4056 telephone (425) 227-2783 fax (425) 227-1181. Start Further Info FOR FURTHER INFORMATION CONTACT: Information concerning this amendment may be obtained from or examined at the Federal Aviation Administration (FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington 98055-4056. The actions specified by this AD are intended to prevent reduced structural integrity of the wing of the airplane due to the problems associated with corrosion and cracking of the wing spar. ![]() This amendment is prompted by reports of cracking and corrosion of the wing spar. This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model B-17E, F, and G airplanes, that requires inspections to detect cracking and corrosion of the wing spar chords, bolts and bolt holes of the spar chords, and wing terminals and correction of any discrepancy found during these inspections. ![]()
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