Airworthiness Directives; Airbus Model A340-541 and -642 Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2006-09-06 · Effective 2006-09-21 · 71 FR 52410
Document
Document number
E6-14624
Federal Register citation
71 FR 52410
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Airbus Model A340-541 and -642
Publication date
2006-09-06
Effective date
2006-09-21
FAA docket
Docket No. FAA-2006-25722
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A340-541 and -642 airplanes. This AD requires a one-time inspection of the anti-stall valve sleeve of the ram air turbine (RAT) for proper installation, determining the part number of the modification plate on the hydraulic pump of the RAT, and follow-on corrective actions if necessary. This AD results from reports of failure of the anti-stall valve on the hydraulic pump of the RAT during scheduled ground tests. We are issuing this AD to prevent failure of the RAT hydraulic pump to supply adequate pressure to activate the RAT, and consequent loss of the RAT as a source of hydraulic and electrical power in an emergency situation.