airworthiness · Rule · Final rule; request for comments. · Published 2020-07-09 · Effective 2020-07-24 · 85 FR 41180
Document
Document number
2020-14779
Federal Register citation
85 FR 41180
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2020-07-09
Effective date
2020-07-24
FAA docket
Docket No. FAA-2020-0575
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by a report that certain safety valves at the left- and right-hand sides of the cabin pressure control system were not installed correctly and that the trunnion nuts used to fasten the V-band clamp were over torqued. This AD requires a measurement of the trunnion nut torque of the V-band clamp, an inspection of the safety valve and airplane bulkhead flange area for any cracking and deformations, and corrective actions, if necessary. The FAA is issuing this AD to address the unsafe condition on these products.