Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
airworthiness · Rule · Final rule. · Published 2020-03-30 · Effective 2020-05-04 · 85 FR 17473
Document
Document number
2020-06505
Federal Register citation
85 FR 17473
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
De Havilland
Publication date
2020-03-30
Effective date
2020-05-04
FAA docket
Docket No. FAA-2019-0726
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-400 series airplanes. This AD was prompted by reports of wear on fuel couplings, bonding springs, and sleeves as well as fuel tube end ferrules and fuel component end ferrules. This AD requires repetitive inspections of certain parts for discrepancies that meet specified criteria, and replacement as necessary; repetitive inspections of certain parts for damage and wear, and rework of parts; and electrical bonding checks of certain couplings. This AD also requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. For certain airplanes, this AD allows a modification that would terminate the repetitive inspections. The FAA is issuing this AD to address the unsafe condition on these products.