Federal Aviation Administration August 23, 2006 – Federal Register Recent Federal Regulation Documents

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B2 and B4 series airplanes. This proposed AD would require revising the airplane flight manual (AFM) to include procedures for resetting the trim and pitch trim levers after each landing, determining which servomotor moves the pitch trim control wheel, and doing applicable other specified actions. This proposed AD also provides for optional terminating actions for those requirements. This proposed AD results from a report of a sudden nose-up movement after disengagement of the autopilot in cruise. We are proposing this AD to ensure that the flightcrew is aware of the procedures for resetting the trim and pitch trim levers after each landing and to prevent failure of the servomotors of the pitch trim systems during flight. Failure of the servomotors of the pitch trim systems could result in uncommanded nose-up movement of the control surface of the pitch trim systems after disengagement of the autopilot in cruise.

This amendment supersedes an existing airworthiness directive (AD), that is applicable to Rolls-Royce plc (RR) models RB211-535E4-37, RB211-535E437, RB211-535C-37, RB211-535E4-B-75, RB211-535E4-C, and RB211-22B-02 turbofan engines. That AD currently requires inspecting certain high pressure (HP) turbine discs, manufactured between 1989 and 1999, for cracks in the rim cooling air holes, and, if necessary, replacing the discs with serviceable parts. The manufacturer identified reaming-induced machining anomalies (RIMA) as the cause for the cracking. This amendment requires the same inspections, and reduces the compliance times for eddy current inspection (ECI) for the RR RB211- 22B-02 engines. This amendment results from the manufacturer reducing their recommended compliance times for inspections on RB211-22B-02 engines. We are issuing this AD to prevent possible disc failure, which could result in an uncontained engine failure and damage to the airplane.

The FAA is superseding an existing airworthiness directive (AD) that applies to certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. The existing AD currently requires inspecting contactors 1K4XD, 2K4XD, and K4XA to determine the type of terminal base plate, and applying sealant on the terminal base plates, if necessary. This new AD revises the effective date of the existing AD. This AD results from incidents of short circuit failures of certain alternating current (AC) contactors located in the avionics bay. We are issuing this AD to prevent short circuit failures of certain AC contactors, which could result in arcing and consequent smoke or fire.

The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 767-400ER series airplanes and Model 777-200 and - 300 series airplanes. This AD requires, for certain airplanes, repetitive testing of the fill and safety fittings of the cargo fire extinguishing bottles in the forward cargo compartment for leaks; and repetitive application of a corrosion inhibiting compound (CIC) or replacement of the cargo fire extinguishing bottles with reworked fire extinguishing bottles, as necessary. For all airplanes, this AD requires replacement of the cargo fire extinguishing bottles with reworked fire extinguishing bottles, which ends the repetitive tests and CIC applications if applicable. This AD results from failure of the safety fittings for the cargo fire extinguishing bottles. We are issuing this AD to prevent failure of the safety fittings for the cargo fire extinguishing bottles due to corrosion, which could result in leakage of extinguishing agent. If a fire occurs in the cargo bay, the cargo fire extinguishing bottles could have less than enough extinguishing agent to control a fire.

This action modifies the Class E airspace area at Half Moon Bay, CA. The establishment of an Area Navigation (RNAV) Global Positioning System (GPS) Z Instrument Approach Procedure (IAP) to Runway (RWY) 30 to Half Moon Bay Airport, Half Moon Bay, CA has made this action necessary. Additional controlled airspace extending upward from 700 feet or more above the surface of the earth is needed to contain aircraft executing this RNAV (GPS) ZIAP to RWY 30 at Half Moon Bay Airport. The intended effect of this action is to provide adequate controlled airspace for Instrument Flight Rules operations at Half Moon Bay Airport, Half Moon Bay, CA