Thu, Jan 31, 2013
AD NUMBER: 2013-02-04
PRODUCT: All Rolls-Royce plc RB211- Trent 970-84, RB211-Trent 970B-84, RB211-Trent 972-84, RB211-Trent 972B-84, RB211-Trent 977-84, RB211-Trent 977B-84 and RB211-Trent 980-84 turbofan engines.
SUBJECT: Airworthiness Directive 2013-02-04
ACTION: Final Rule, Request for Comments
SUMMARY: This AD requires on-wing inspections of low-pressure turbine (LPT) disk seal fins and interstage seals when post-flight review indicates Engine Health Monitoring (EHM) vibratory maintenance-alert limits were exceeded in flight. The AD also requires in-shop inspections of the LPT disk seal fins and interstage seals to detect cracks or damage and, depending on the findings, accomplishment of corrective action.
This AD is prompted by a Trent 900 engine experiencing LPT stage 2 disk interstage seal material loss and increased low-pressure rotor vibration while in flight. The FAA is issuing this AD to prevent cracks in the LPT disk, which could result in uncontained engine failure and damage to the airplane.
DATES: This AD becomes effective February 14, 2013. Comments must be received by March 18, 2013.
Also: Holland Wants Gold, FAA Strangling UAVs?, RAF WWII Trainer For Sale, Bf109s Live, Georgia v Aerospace Engineers The Aircraft Electronics Association has released its third-qu>[...]
"Reaching this stage that we call ATLO is a critical milestone. This is a very satisfying point of the mission as we transition from many teams working on their individual elements>[...]
ANN goes through a lot of trouble to make the graphics flashy and cool and an integral part of the story. But let's face it, they're bandwidth-intensive. So here are a couple of th>[...]
Heat Generated By Electronic Systems A Growing Challenge Managing heat that is generated by electronic subsystems in next-generation aircraft is a vexing challenge for aerospace sy>[...]
Prototype Test Flights Evaluate Integrated Electronic Warfare Capabilities The U.S. Navy and Raytheon successfully demonstrated an end to end, first of its kind, integrated electro>[...]