Wed, Jul 04, 2012
AD NUMBER: 2012-12-03
PRODUCT: All Rolls-Royce plc (RR) models RB211-Trent 970-84, 970B-84, 972-84, 972B-84, 977-84, 977B-84, and 980-84 turbofan engines.
SUBJECT: Airworthiness Directive 2012-12-03
ACTION: Final Rule; request for comments.
SUMMARY: The FAA is superseding an existing airworthiness directive (AD) for the products listed above.
That AD currently requires inspecting the intermediate-pressure (IP) shaft rigid coupling splines for wear resulting in rearward movement of the IP turbine.
This AD requires the same inspections, and new inspections based on possible changes in wear rate. This AD was prompted by RR identifying wear beyond engine manual limits on the abutment faces of the splines. RR also determined that an additional IP shaft rigid coupling configuration requires inspection.
The FAA is issuing this AD to detect wear on the abutment faces of the splines, which could result in loss of disc integrity, an uncontained failure of the engine, and damage to the airplane.
DATES: This AD is effective July 17, 2012. Comments are due no later than August 16, 2012.
Also: Evolution Aircraft, Sporty’s/Savvy Breakdown Assistance, Comprehensive Jack Pelton Interview, Part 4 FAA administrator Michael Huerta came to town at EAA AirVenture 201>[...]
Leading Edge Sport Avionics Company Pushes The Envelope For Both Sport and General Aviation Markets! Founded in 2000, Dynon Avionics’ mission is to create the best avionics a>[...]
Pilot Training System Has A Knack For Educating Aviators... Via Innovative Programs Established in 2011, Pilot Training System’s (PTS) online flight-training solution provide>[...]
Sporty's Pilot Shop Is A Pivotal GA Resource! Sporty’s Pilot Shop was founded over 50 years ago by a flight instructor, and ever since has been for pilots and by pilots. Hal >[...]
Trig Excels In Affordable Avionics That Fit YOUR Panel! Trig Avionics are experts in the design and manufacture of compact and innovative certified avionics for light aviation. Our>[...]