Federal Aviation Administration September 4, 2008 – Federal Register Recent Federal Regulation Documents

The FAA proposes to adopt a new airworthiness directive (AD) for GE CF6-80A series turbofan engines with certain stage 1 high- pressure turbine (HPT) rotor disks, installed. This proposed AD would require removal from service of those stage 1 HPT rotor disks within 30 days after the effective date of the AD. This proposed AD results from the FAA learning that those disks are susceptible to cracks developing in the bottoms of the dovetail slots. We are proposing this AD to prevent cracks developing in the bottoms of the dovetail slots that could propagate to a failure of the disk and cause an uncontained engine failure and damage to the airplane.

On July 30, 2008, a notice to conduct informal airspace meetings for the Chicago Class B airspace project was published in the Federal Register (73 FR 44311). Subsequent to publication, the FAA has had to change the venue of meetings 1 and 3, being held on September 23, 2008, and September 25, 2008, respectively. The address for both of these meetings has changed to Signature Flight Center Hangar, 1061 S. Wolf Road, Wheeling, IL 60090. The second meeting time and place remains as previously published.