Airworthiness Directives; General Electric Company (GE) GE90 Series Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for GE GE90-110B1, -113B, and -115B series turbofan engines with certain Turbine Center Frames (TCFs) installed. This AD requires removing certain TCFs, listed by part number (P/N) in this AD, from service before exceeding 14,300 flight cycles. This AD results from a report that GE inadvertently omitted some TCF P/Ns from the Airworthiness Limitations Section (ALS) of the engine manual. We are issuing this AD to prevent structural failure of the TCF with uncontained failure of low pressure turbine (LPT) rotating parts. Uncontained failure of the LPT rotating parts could result in damage to the airplane and possible loss of control of the airplane.
Extended Operations (ETOPS) of Multi-Engine Airplanes
The Federal Aviation Administration is correcting a final rule published in the Federal Register on January 16, 2007 (72 FR 1808). That final rule applied to air carrier (part 121), commuter, and on- demand (part 135) turbine powered multi-engine airplanes used in passenger-carrying, and some all-cargo, extended-range operations. This amendment adds the Office of Management and Budget (OMB) Information Collection Control Number indicating approval of the information collection requirements of the final rule. This amendment also makes three corrections: In part 135, it corrects the dual maintenance paragraph to conform to part 121 and deletes a redundant defining of ``adequate airport''; in part 121 it corrects the rule language applicable to those persons who must accomplish and certify by signature the completion of ETOPS tasks; and in parts 121 and 135 it corrects the hours required for notification of maintenance problems based on an earlier FAA rulemaking. None of these changes is substantive, but will clarify the final rule for the affected public.
Notice of Availability of Draft Advisory Circulars, Other Policy Documents and Proposed Technical Standard Orders
The FAA's Aviation Safety, an organization responsible for the certification, production approval, and continued airworthiness of aircraft, and certification of pilots, mechanics, and others in safety related positions, publishes proposed non-regulatory documents that are available for public comment on the Internet at https://www.faa.gov/ aircraft/draftdocs/.