We propose to adopt a new airworthiness directive (AD) for certain Cessna Airplane Company Model 525 airplanes equipped with certain part number (P/N) air conditioning (A/C) compressor motors. This proposed AD was prompted by reports of smoke and/or fire in the tailcone caused by brushes wearing beyond their limits on the A/C motor. This proposed AD would require inspection of the number of hours on the A/C compressor hour meter, inspection of the logbook, and replacement of the brushes on certain P/N A/C compressor motors or deactivation of the A/C system until replacement of the brushes. This proposed AD also requires reporting of aircraft information related to the replacement of the brushes. We are proposing this AD to correct the unsafe condition on these products.
Agency Contact: Christine Abraham, Aerospace Engineer, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Wichita, Kansas 67209; phone: (316) 946-4165; fax: (316) 946-4107; email: WICHITA-COS@FAA.GOV.
This is a proposed regulation. Comments were due on October 9, 2012.