Airworthiness Directive · Amendment 39-9814 · de Havilland Model DHC-8-100 and -300 Series Airplanes
de Havilland Model DHC-8-100 and -300 Series Airplanes
Model DHC-8-102, -103, -301, -311, and -314 series airplanes; having serial numbers 003 through 395 inclusive, but excluding serial numbers 011, 362, and 391; on which Modification 8/2139 (as described in de Havilland Service Bulletin S.B. 8-53-49, dated June 30, 1995) has not been accomplished; certificated in any category.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain de Havilland Model DHC-8-100 and -300 series airplanes, that currently requires repetitive inspections to detect cracks of the upper drag strut trunnion fittings of the nose landing gear (NLG) and to verify tightness of the fitting attachment bolts, and replacement of fittings or fasteners, if necessary. This amendment requires the installation of a modification to terminate the repetitive inspections. This amendment is prompted by the development of a modification that positively addresses the identified unsafe condition. The actions specified by this AD are intended to prevent failure of the upper drag strut trunnion fittings of the NLG, which could lead to collapse of the NLG.
