Airworthiness Directives; Bombardier, Inc. Airplanes
airworthiness · Rule · Final rule. · Published 2012-03-06 · Effective 2012-04-10 · 77 FR 13193
Document
Document number
2012-4494
Federal Register citation
77 FR 13193
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2012-03-06
Effective date
2012-04-10
FAA docket
Docket No. FAA-2011-1230
Abstract
We are adopting a new airworthiness directive (AD) for certain Model DHC-8-102, -103, and -106 airplanes and Model DHC-8-200, -300, and -400 series airplanes. This AD was prompted by reports of cracking of the DHC-8 Series 100 rudder actuator mounting bracket. This AD requires modifying the mounting adapters of the power control unit (PCU). We are issuing this AD to prevent loss of both rudder PCU actuators which could result in free play of the rudder control surface and loss of controllability of the airplane.