Federal Aviation Administration November 15, 2007 – Federal Register Recent Federal Regulation Documents
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Review of Existing Regulations
The FAA requests comments from the public to identify those regulations currently in effect that we should amend, remove, or simplify. We are publishing this notice under our ongoing regulatory review program required by Executive Order 12866. Getting public comments is a necessary element of our effort to make our regulations more effective and less burdensome.
Airworthiness Directives; Turbomeca Makila 1 A and 1 A1 Turboshaft Engines
The FAA proposes to supersede an existing airworthiness directive (AD) for Turbomeca Makila 1 A, 1 A1, and 1 A2 turboshaft engines. That AD currently requires replacing certain digital electronic control units (DECUs) and electronic control units (ECUs) with modified DECUs and ECUs. This proposed AD would apply only to Makila 1 A and 1 A1 turboshaft engines, and would require replacing the selector-comparator board in the ECU with a board incorporating Turbomeca modification TU 250. This proposed AD results from recent unexplained reversions of the ECU to the 65% N1 back-up mode. We are proposing this AD to prevent dual-engine reversion of the ECU to the 65% N1 back-up mode, which could lead to inability to continue safe flight, emergency autorotation landing, or an accident.
Airworthiness Directives; Boeing Model 747 Series Airplanes Powered by General Electric (GE) CF6-45/50, Pratt & Whitney (P&W) JT9D-70, or JT9D-7 Series Engines
This action withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes powered by GE CF6-45/50, P&W JT9D-70, or JT9D-7 series engines. That action would have required repetitive inspections to find cracks and broken fasteners of the inboard and outboard nacelle struts of the rear engine mount bulkhead, and repair, if necessary. For certain airplanes, that action would have provided for an optional terminating modification for the inspections of the outboard nacelle struts. Since the issuance of the NPRM, the Federal Aviation Administration (FAA) has received new data of other issues related to the unsafe condition. The data include many new reports of additional web and frame cracks and sheared attachment fasteners, and reports of cracks on the outboard struts of airplanes not identified in the applicability of the NPRM, in addition to the comments received for the NPRM. We have determined from these data that the corrective actions required by the NPRM are inadequate for addressing the identified unsafe condition. Accordingly, the proposed rule is withdrawn.
Amendment to Class E Airspace; Helena, MT
This action will modify Class E airspace at Helena, MT. Additional controlled airspace is necessary to accommodate aircraft using a new Localizer (LOC) Back Course (BC)-C Standard Instrument Approach Procedures (SIAP) at Helena Regional Airport. The FAA is taking this action to enhance the safety and management of aircraft operations at Helena Regional Airport, Helena, MT. Also, this action makes a minor correction to the airspace description.
Airworthiness Directives; Cessna Model 560 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Cessna Model 560 airplanes. This AD requires installing new minimum airspeed placards to notify the flightcrew of the proper airspeeds for operating in both normal and icing conditions. This AD also requires revising the airplane flight manual to provide limitations and procedures for operating in icing conditions, for operating with anti-ice systems selected ``on'' independent of icing conditions, and for recognizing and recovering from inadvertent stall. This AD also provides an optional terminating action for the placard installation. This AD results from an evaluation of in-service airplanes following an accident. The evaluation indicated that some airplanes may have an improperly adjusted stall warning system. We are issuing this AD to prevent an inadvertent stall due to the inadequate stall warning margin provided by an improperly adjusted stall warning system, which could result in loss of controllability of the airplane.
Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800 and -900 Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -700C, -800 and -900 series airplanes. This AD requires an inspection of the fillet sealant at the inboard and outboard sides of the receptacles in the wheel wells of the main landing gear, and related investigative/corrective actions if necessary. This AD results from reports of in-production airplanes with missing or insufficient fillet sealant around the receptacles at the disconnect bracket. We are issuing this AD to prevent corrosion damage due to missing or insufficient fillet sealant. Such corrosion could result in insufficient electrical bonding between the connectors and the disconnect bracket, and consequent loss of the shielding that protects the wire bundles from lightning, electromagnetic interference (EMI), and high intensity radiated field (HIRF). Loss of lightning, EMI, and HIRF protection at those receptacles could cause failure of multiple electrical systems and subsequent loss of several critical control systems that are necessary for safe flight. In addition, a lightning strike could cause arcing in the fuel tank; this potential ignition source, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
Airworthiness Directives; Boeing Model 777 Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 777 airplanes. This AD requires repetitive measurements of the freeplay of certain joints of the trailing edge flap supports; repetitive lubrication of the support joints; and related investigative and corrective actions if necessary. This AD also provides for modifying certain components of the trailing edge flap supports, which extends the intervals for the repetitive measurements, and revising the maintenance practices of the maintenance planning data document. This AD results from reports of excessive wear of the pins, bushings, and bearings, and corrosion at the joints of the outboard trailing edge flap supports. We are issuing this AD to prevent wear and corrosion at the flap support joints, which could result in loss of the trailing edge flap and possible loss of control of the airplane.
Airworthiness Directives; Boeing Model 767-200, -300, and -300F Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 767-200, -300, and -300F series airplanes. This AD requires a one-time inspection of each fuel quantity indication system (FQIS) wire harness connector for corrosion of the shield-to-backshell connection, corrosion on the ground jumper, and damage to the ground jumper; a loop resistance test of each FQIS wire harness; and related investigative and corrective actions if necessary. This AD results from reports of corrosion of the out-tank wire harness of the spar connector backshell for the FQIS. We are issuing this AD to detect and correct corrosion of the out-tank wire harness, which could prevent correct grounding of the lightning shield and result in total loss of the electrical grounding between the lightning shield and the airplane structure. This condition, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
Airworthiness Directives; Boeing Model 747-400, 747-400D, and 747-400F Series Airplanes; Model 757-200 Series Airplanes; and Model 767-200, 767-300, and 767-300F Series Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747-400, 747-400D, 747-400F, 757-200, 767-200, 767-300, and 767-300F series airplanes. This AD requires inspecting to determine the date code of the time delay relay for the cargo fire suppression system, and replacing the relay if necessary. This AD results from a report indicating that failure of a time delay relay on an ELMS (electrical load management system) panel led to testing of other time delay relays at Boeing and at the supplier. Similar relays are used in the cargo fire suppression system. The time delay relay controls when the secondary fire bottles discharge. We are issuing this AD to ensure there is sufficient fire suppressant to control a cargo fire if the airplane is more than the relay delay time from a suitable airport, which could result in an uncontrollable fire in the cargo compartment.
Amendment of Class E Airspace; Mooresville, NC
This action amends class E5 airspace at Mooresville, NC. Due to the establishment of two Copter Area Navigation (RNAV) Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP) helicopter point in space approaches at Lowe's Mooresville Heliport, Mooresville, NC, additional controlled airspace extending upward from 700 feet Above Ground Level (AGL) is needed to accommodate the SIAPs and for Instrument Flight Rules (IFR) operations at Lowe's Mooresville Heliport.
Notice of Passenger Facility Charge (PFC) Approvals and Disapprovals
The FAA publishes a monthly notice, as appropriate, of PFC approvals and disapprovals under the provisions of the Aviation Safety and Capacity Expansion Act of 1990 (Title IX of the Omnibus Budget Reconciliation Act of 1990) (Pub. L. 101-508) and Part 158 of the Federal Aviation Regulations (14 CFR part 158). This notice is published pursuant to paragraph (d) of Sec. 158.29.