Federal Aviation Administration April 3, 2015 – Federal Register Recent Federal Regulation Documents

The FAA is proposing that safety information provided to it by Federal Contract Tower employees (hereinafter ``Vendor'') under the SAFER-FCT Program or by Air Traffic Organization Engineers & Architects, Staff Support Specialists, Aviation Technical System Specialists (Series 2186) and Flight Procedures Team (hereinafter ``Region X'') under the ATSAP-X program be designated by an FAA Order as protected from public disclosure in accordance with the provisions of 14 CFR part 193. The designation is intended to encourage persons to voluntarily provide information to the FAA under the SAFER-FCT or the ATSAP-X safety reporting programs, so the FAA can learn about and address aviation safety hazards of which it was unaware or more fully understand and implement corrective measures for events known by it through other means. Under 49 U.S.C. 40123, the FAA is required to protect information from disclosure to the public, including disclosure under the Freedom of Information Act (5 U.S.C. 552) or other laws, following the issuance of such Order.

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211-524 turbofan engines with certain part number (P/N) low-pressure turbine (LPT) stage 3 turbine blades installed. This AD requires implementation of a life limit for certain P/N LPT stage 3 turbine blades and replacement of affected blades that reach or exceed the life limit. This AD was prompted by reports of LPT stage 3 turbine blade failures, release of blades, and subsequent in- flight shutdowns. We are issuing this AD to prevent failure of LPT stage 3 turbine blades and subsequent release of blade debris, which could lead to failure of one or more engines, loss of thrust control, and damage to the airplane.