Sign-up to receive weekly MRO email updates with news, commentary, photos, videos and more!
MRO executives throughout the world rely on Aviation Week's MRO Edition comprehensive reporting and analysis of the global aftermarket.
MRO Links is an exciting new program that satisfies buyer needs, while providing marketers with an unduplicated lead generation program.
Based on an index of data representing information about which employees care most.
Aviation Week named the 2012 companies most likely to meet the mark.
Aviation Week is proud to announce its new Innovation Special Topic page.
Check out articles, white papers, interactive features and more related to aviation, aerospace and defense innovation.
View the November 2012 Zinio edition of MRO Links from AviationWeek & Space Technology
Visit our MRO Links Page »
More »
Airbus and supplier Thales have uncovered an interesting assembly line defect that could be affecting angle-of-attack data on some of the OEM's long-range aircraft: dirty oil. During handover flight tests, Airbus discovered that angle-of-attack (AOA) data on two different aircraft were inaccurate. Airbus traced the problem to oil residue on the Thales-supplied AOA probe. Quoting an EASA AD: Investigation conducted by Thales on the removed probes revealed oil residue between the stator and the rotor parts of the AoA vane position resolvers. This oil residue was due to incorrect cleaning of the machining oil during the manufacturing process of the AoA resolvers. At lowtemperatures, this oil residue becomes viscous (typically in cruise) causing lag of AoA vane movement.The AD (2010-0016R1) orders replacements of the affected AOA probes on A330s and A340s by April 30. The directive is a revision of one published last month; the revision specifies that aircraft maintenance records can be used in lieu of a visual inspection to pinpoint affected probes.
Investigation conducted by Thales on the removed probes revealed oil residue between the stator and the rotor parts of the AoA vane position resolvers. This oil residue was due to incorrect cleaning of the machining oil during the manufacturing process of the AoA resolvers. At lowtemperatures, this oil residue becomes viscous (typically in cruise) causing lag of AoA vane movement.
Tags: om99, EASA, Airbus, A330, A340, Thales