Federal Aviation Administration April 20, 2016 – Federal Register Recent Federal Regulation Documents

We propose to adopt a new airworthiness directive (AD) for certain Pratt & Whitney (PW) PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, and PW4170 turbofan engines. This proposed AD was prompted by several instances of fuel leaks on PW engines installed with the Talon IIB combustion chamber configuration. This proposed AD would require initial and repetitive inspections of the affected fuel nozzles and their replacement with parts eligible for installation. We are proposing this AD to prevent failure of the fuel nozzles, which could lead to engine fire and damage to the airplane.

Notice is hereby given of the FAA's clarification of its policy regarding the acceptance of documents submitted to the FAA Aircraft Registry with digital signatures in support of aircraft registration under 14 CFR 47.13 and conveyances or security documents submitted to the FAA Aircraft Registry regarding claims and interests under 14 CFR 49.13.

We propose to adopt a new airworthiness directive (AD) for certain Zodiac Seats California LLC seating systems. This proposed AD was prompted by a determination that the affected seating systems may cause serious injury to the occupant during forward impacts when subjected to certain inertia forces. This proposed AD would require removing affected seating systems. We are proposing this AD to prevent serious injury to the occupant during forward impacts in emergency landing conditions.

We propose to supersede Airworthiness Directive (AD) 2015-02- 23, for certain Bombardier, Inc. Model CL-600-1A11 (CL-600), CL-600- 2A12 (CL-601), and CL-600-2B16 (CL-601-3A, and CL-601-3R Variants) airplanes. AD 2015-02-23 currently requires repetitive inspections for fractured or incorrectly oriented fasteners on the inboard flap hinge- box forward fittings on both wings, and replacement of all fasteners if necessary. The preamble to AD 2015-02-23 explains that we consider the requirements interim action and are considering further rulemaking. We now have determined that further rulemaking is indeed necessary, and that replacement of the fasteners is necessary. This proposed AD would require terminating action to replace the fasteners on the inboard flap hinge-box forward fittings on both wings. We are proposing this AD to detect and correct incorrectly oriented or fractured fasteners, which could result in detachment of the flap hinge-box and the flap surface, and consequent reduced controllability of the airplane.

We propose to supersede Airworthiness Directive (AD) 2005-15- 07, for certain Airbus Model A320-111 airplanes and Model A320-200 series airplanes. AD 2005-15-07 currently requires installing insulator and cable ties to the electrical cables of the S routes at the gaps in the raceway in the wing trailing edge and the wing tip and wing root areas. Since we issued AD 2005-15-07, we have received reports of wire chafing in the left-hand wing trailing edge. This proposed AD would require additional modifications in the trailing edges of both wings. This proposed AD would also remove airplanes from the applicability. We are proposing this AD to prevent wire chafing in the trailing edge of the wings, which could result in a short circuit in the vicinity of the fuel tanks, consequently resulting in a potential source of ignition in a fuel tank vapor space and consequent fuel tank explosion.