Federal Aviation Administration May 8, 2015 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; BAE SYSTEMS (Operations) Limited Airplanes
We propose to supersede Airworthiness Directive (AD) 2011-21- 06 for all BAE SYSTEMS (Operations) Limited Model 4101 airplanes. AD 2011-21-06 currently requires revising the maintenance program. Since we issued AD 2011-21-06, we have determined that the life limit of certain main landing gear components must be reduced, and certain post- repair inspections of critical structure are necessary. This proposed AD would require a new revision of the maintenance/inspection program. We are proposing this AD to prevent failure of certain structurally significant items, including the main landing gear and nose landing gear, which could result in reduced structural integrity of the airplane; and to prevent fuel vapor ignition sources, which could result in a fuel tank explosion and consequent loss of the airplane.
Airworthiness Directives; Airbus Airplanes
We propose to supersede Airworthiness Directive (AD) 2004-14- 09, for certain Airbus Model A320-211, -212, and -231 airplanes. AD 2004-14-09 currently requires repetitive inspections for fatigue cracking of the lower surface panel on the wing center box, and repair if necessary; and modification of the lower surface panel on the wing center box, which constitutes terminating action for the repetitive inspections. Since we issued AD 2004-14-09, we have determined that, based on the average flight duration, the average weight of fuel at landing is higher than that defined for the analysis of the fatigue- related tasks; and that shot peening might have been improperly done on the chromic acid anodizing (CAA) protection, which would adversely affect fatigue crack protection. This proposed AD would reduce the compliance times for the repetitive inspections, and would require a repair for certain airplanes. We are proposing this AD to detect and correct fatigue cracking of the lower surface panel on the wing center box, which could result in reduced structural integrity of the airplane.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 series airplanes. This proposed AD was prompted by fatigue testing that determined fatigue damage could appear on clips, shear webs, and angles at certain rear fuselage sections and certain frames. This proposed AD is intended to complete certain mandated programs intended to support the airplane reaching its limit of validity (LOV) of the engineering data that support the established structural maintenance program. This proposed AD would require replacing the clips, the shear webs, and angles, including doing all applicable related investigative actions, and repair if necessary. We are proposing this AD to prevent fatigue damage on the clips, shear webs, and angles, which could affect the structural integrity of the airplane.
Airworthiness Directives; Bombardier, Inc. Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes. This proposed AD was prompted by multiple reports of chafing found on an electrical wiring harness in the aft equipment bay, caused by contact between the wiring harness and a neighboring hydraulic line. This proposed AD would require an inspection, repair if necessary, and modification of the wiring harness installation to ensure that the wiring harness routing is correct and a minimum clearance between the wire and the hydraulic line is maintained. We are proposing this AD to detect and correct chafing on an electrical wiring harness, which could cause an electrical short circuit or lead to a malfunction of the flight control system, the engine indication system, or the hydraulic power control system, and adversely affect the continued safe operation and landing of the airplane.
Proposed Revocation of Class D and E Airspace; Independence, KS
This supplemental notice of proposed rulemaking proposes to remove Class D airspace and Class E surface area airspace at Independence Municipal Airport, Independence, KS. In an NPRM published in the Federal Register September 25, 2014, the FAA proposed to remove Class D airspace at Independence Municipal Airport, Independence, KS. The FAA has reassessed the proposal to include the removal of the associated Class E surface area airspace. The closure of the airport's air traffic control tower has necessitated the need for this proposal.
Proposed Establishment and Amendment of Class E Airspace; Bremerton, WA
This action proposes to establish and modify Class E airspace at Bremerton National Airport, Bremerton, WA, to accommodate new Standard Instrument Approach Procedures (SIAPs) at Bremerton National airport. The FAA is taking this action to enhance the safety and management of Instrument Flight Rules (IFR) operations for SIAPs at the airport.
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