Airworthiness Directive

AD 99-03-07 64 FR 5587 Active

Federal Aviation Administration · 14 CFR part 39

FR document
99-2497
Amendment
39-11021
Published
1999-02-04
Effective
1999-03-11
Models covered
1
Last live check
2026-10-01
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AD

99-03-07

FR doc 99-2497 · 64 FR 5587

AD 99-03-07Published 1999-02-04Effective 1999-03-11

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires removal of all attachment bolts and pre-load indicating (PLI) washers of the wing-to-fuselage attachment fittings; a one-time visual inspection to detect corrosion of each attachment bolt; and installation of new…

Full official abstract

This amendment adopts a new airworthiness directive (AD), applicable to all Bombardier Model DHC-7 series airplanes, that requires removal of all attachment bolts and pre-load indicating (PLI) washers of the wing-to-fuselage attachment fittings; a one-time visual inspection to detect corrosion of each attachment bolt; and installation of new attachment bolts and PLI washers of the wing-to- fuselage attachment fittings. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent failure of the attachment bolts of the wing-to-fuselage attachment fittings due to stress corrosion cracking, which could result in reduced structural integrity of the airplane.

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Applies to 1 model in our index