Airworthiness Directives; Bombardier, Inc. Airplanes
airworthiness · Rule · Final Rule. · Published 2013-06-28 · Effective 2013-08-02 · 78 FR 38823
Document
Document number
2013-14430
Federal Register citation
78 FR 38823
Type
Rule
Action
Final Rule.
Category
airworthiness
Publication date
2013-06-28
Effective date
2013-08-02
FAA docket
Docket No. FAA-2012-1155
Abstract
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of chafing found on the main landing gear (MLG) yoke. The chafing was attributed to contact between the nacelle fire detection wires and the MLG yoke. This AD requires inspections of the nacelle fire detection wires and the MLG yoke for damage; replacing nacelle fire detection wires, if necessary; repairing the MLG yoke, if necessary; and installing brackets and associated hardware to secure the fire detection wires. We are issuing this AD to prevent chafing between the nacelle fire detection wires and the MLG yoke. Chafing could lead to cracking and subsequent failure of the MLG yoke, which could adversely affect the safe landing of the airplane. In addition, chafing of the nacelle fire detection wires could cause them to fail and prevent the detection of a fire in the nacelle assembly.