Federal Aviation Administration March 2, 2017 – Federal Register Recent Federal Regulation Documents

The FAA is issuing this notice to advise the public of a meeting of the ARAC.

We are superseding airworthiness directive (AD) 2013-05-18 for certain Rolls-Royce plc (RR) RB211 Trent 500 series turbofan engines. AD 2013-05-18 required initial and repetitive inspections of the low- pressure (LP) fuel tubes, fuel tube clips, and fuel/oil heat exchanger (FOHE) mounts for evidence of damage, wear, and fuel leakage. This AD reduces the repetitive inspection intervals. This AD was prompted by additional service experience. We are issuing this AD to correct the unsafe condition on these products.

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-401 and DHC-8-402 airplanes. This proposed AD was prompted by a report that a pilot was unable to move the rudder pedal due to an obstruction. This proposed AD would require an inspection to determine if wiring shrouds are present, and modifying the wiring shrouds if necessary. We are proposing this AD to address the unsafe condition on these products.

We propose to adopt a new airworthiness directive (AD) for ZLIN AIRCRAFT a.s. Model Z-242L airplanes that would supersede AD 2003- 11-12. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a need to incorporate new revisions into the Limitations section, Chapter 9, of the FAA-approved maintenance program (e.g., maintenance manual) to impose new or more restrictive life limits on critical components. We are issuing this proposed AD to require actions to address the unsafe condition on these products.

We are adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Limited (BHTC) Model 206 helicopters. This AD requires removing certain tension-torsion straps (TT straps) from service and is prompted by reports of corroded TT straps. These actions are intended to prevent an unsafe condition on these products.

We propose to supersede Airworthiness Directive (AD) 69-13-03, which applies to all Piper Aircraft, Inc. Models PA-23, PA-23-160, PA- 23-235, PA-23-250, PA-E23-250, and PA-30 airplanes. AD 69-13-03 currently requires inspection of the heater exhaust extension, replacement of the extension as necessary, and overhaul of the combustion heater assembly. Since we issued AD 69-13-03, we proposed an AD that applies to the Meggitt (Troy), Inc. combustion heaters, and the proposed combustion heater AD would incorporate corrective actions for the heater that contradict the overhaul requirement of AD 69-13-03. This proposed AD would retain the inspection of the heater exhaust extension, with replacement of the extension as necessary, and remove the overhaul requirement of the combustion heater assembly. We are proposing this AD to correct the unsafe condition on these products.