Federal Aviation Administration March 17, 2010 – Federal Register Recent Federal Regulation Documents

We propose to adopt a new airworthiness directive (AD) for certain AVOX Systems and B/E Aerospace oxygen cylinders, as installed on various 14 CFR part 23 or CAR 3 airplanes. This proposed AD would require inspecting for and removing substandard oxygen cylinders from the airplane. This proposed AD was prompted by the reported rupture of a high-pressure gaseous oxygen cylinder, which had insufficient strength characteristics due to improper heat treatment. We are proposing this AD to prevent an oxygen cylinder from rupturing, which, depending on the location, could result in structural damage and rapid decompression of the airplane, damage to adjacent essential flight equipment, deprivation of the necessary oxygen supply for the flightcrew, and injury to cabin occupants or other support personnel.

The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CF6-45 and CF6-50 series turbofan engines with certain low-pressure turbine (LPT) stage 3 disks installed. This AD requires fluorescent penetrant inspection (FPI) of the LPT stage 3 disk under certain conditions and removal of the disk from service before further flight if found cracked. This AD also requires initial and repetitive borescope inspections of the high-pressure turbine (HPT) rotor stage 1 and stage 2 blades for wear and damage, including excessive airfoil material loss. This AD results from three reports of uncontained failures of LPT stage 3 disks and eight reports of cracked LPT stage 3 disks found during shop visit inspections. We are issuing this AD to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.

We are adopting a new airworthiness directive (AD) for certain Model 45 airplanes. This AD requires a general visual inspection for cracked and missing ballscrew assembly sleeves of the flap actuator, repetitive non-destructive liquid penetrant inspections of each sleeve or flap actuator for cracks, and replacement or modification of the flap actuator if necessary. This AD results from reports of cracked and missing ballscrew assembly sleeves of the flap actuators. We are issuing this AD to detect and correct cracked and missing sleeves, which could cause loss of the load-carrying ball bearings on both actuators on one flap, resulting in flap asymmetry and loss of control of the airplane.

The FAA hereby provides notice of intent to release certain airport properties, 15.819 acres at the Melbourne International Airport, Melbourne, Florida from the conditions, reservations, and restrictions as contained in a Quitclaim Deed agreement between the FAA and the City of Melbourne, dated August 6, 1947. The release of property will allow the Melbourne Airport Authority to dispose of the property for other than aeronautical purposes. The property is located in the the Southwest \1/4\ of Section 21, Township 27 South, Range 37 East, Brevard County, Florida. The parcel is currently designated as non-aeronautical use. The property will be disposed of for the purpose of municipal use. The fair market value of the property has been determined by appraisal to be $1,061,211. The airport will receive fair market value for the property, which will be subsequently reinvested in another eligible airport improvement project.

This action amends the legal description of two Jet Routes and seven VHF Omnidirectional Range (VOR) Federal Airways in the vicinity of Gage, OK. The FAA is taking this action because the Gage VHF Omnidirectional Range/Tactical Air Navigation (VORTAC), included as part of the route structure for the airways, is being renamed the Mitbee VORTAC for identity clarification.

This amendment adopts a new airworthiness directive (AD) for the specified Sikorsky Aircraft Corporation (Sikorsky) Model S-76C helicopters. This action requires inspecting the emergency flotation system squib connector (flotation system connector) to determine if a metallic foil shunt is installed. This amendment is prompted by a discovery that a metallic foil shunt meant to prevent inadvertent activation of a flotation system during installation was still installed in the left-hand flotation system connector of a Model S-76C helicopter. The actions specified in this AD are intended to determine if a metallic foil shunt is installed in the flotation system, which could prevent the flotation system from deploying and could prevent the helicopter from staying afloat long enough to enable emergency evacuation after a water landing.

We are adopting a new airworthiness directive (AD) for the specified model helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states that the AD is issued following a manufacturing nonconformity found on one batch of the servo-control caps. With a defective servo-control, rotation of the distributor might not be stopped mechanically since only friction of inner seals holds the distributor sleeve in its position. The AD

This action revises Class E airspace at Dillingham, AK, to accommodate amended Area Navigation (RNAV) Standard Instrument Approach Procedures (SIAPs), conventional SIAPs, and an Obstacle Departure Procedure (ODP) at Dillingham Airport. The FAA is taking this action to enhance safety and management of Instrument Flight Rules (IFR) operations at Dillingham Airport.

This action revises Class E airspace at Scammon Bay, AK, to accommodate new Area Navigation (RNAV) Standard Instrument Approach Procedures (SIAPs) at Scammon Bay Airport. The FAA is taking this action to enhance safety and management of Instrument Flight Rules (IFR) operations at Scammon Bay Airport.