Airworthiness directives › 2023-10-04
AD 2023-10-04 Airworthiness Directives; Boeing Airplanes
Models named: B-17E, B-17F, B-17G. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Boeing Model B-17E, B-17F, and B-17G airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Before further flight: Perform inspections to detect cracking and corrosion by doing the actions specified in either paragraph (g)(1) or (2) of this AD. No action is required by this AD if all wing terminal fittings have been inspected in accordance with paragraph (b)(1) of AD 2001-22-06, Amendment 39-12485 (66 FR 54111, October 26, 2001), and, as of the effective date of this AD, no more than 10 years or 2,500 flight hours have accumulated since that inspection. (1) Separate all 8 wing terminal-to-spar chord joints (wings off) and perform a magnetic particle inspection of the steel terminal fittings and an eddy current inspection of the 8 inboard holes in the end of the spar chord, in accordance with procedures approved by the Manager, West Certification Branch, FAA. (2) On the left and right lower forward terminal fitting-to-spar chord joint assemblies, remove the most inboard fastener common to the spar cord and the terminal fitting, and do an eddy current bolt hole inspection on the steel terminal fittings and on the aluminum spar chord in accordance with procedures approved by the Manager, West Certification Branch, FAA.
Unsafe condition
This AD was prompted by a report indicating that the wing of one airplane had shifted away from the fuselage by about 2 inches, and the left front spar lower fitting had completely separated at the wing-to-fuselage joint, and additional cracking was found on the equivalent joint on the right side of the airplane. The FAA is issuing this AD to address these conditions, which, if not addressed, could result in loss of control of the airplane and reduced structural integrity of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1