The FAA has proposed an AD involving 14,653 U.S. Cessna 172, 182, 206 and 210 models after cracks were found in the lower area of the forward cabin doorpost bulkhead. That’s where the wing strut attaches and the AD requires repetitive inspections of the area. After one owner reported finding cracks, more inspections revealed them in about 50 more aircraft. “It has been determined that the cracks result from metal fatigue,” the AD says. A list of affected aircraft is here: https://www.gpo.gov/fdsys/pkg/FR-2018-02-01/pdf/2018-01923.pdf The cracks appear in a somewhat tough-to-reach spot and it takes about 90 minutes to do the inspection. The FAA is going with Cessna’s recommended intervals for the inspection and they don’t start until the airframe reaches 4,000 hours. The initial inspection has to be done within a year of that milestone or after 200 hours, whichever comes first. After that, it’s every 1,000 hours. If cracks are found, the repair will cost about $3,000 and idle the plane for a few days. An earlier story didn’t clarify that the AD is proposed and that there is a comment period that ends March 19, 2018.
Pratt & Whitney has extended the basic Time Between overhaul on their PT6A-140 line of engines up from 3600 hours to 4000 hours and increased Hot Section inspection (HSI) intervals from 1800 to 2000 hours. These improvements will greatly benefit general aviation operators by increasing flying time and significantly decreasing maintenance cost. The PT6A-140 series is the latest engine to the PT6A family and Pratt & Whitney have delivered close to 500 engines to date. The PT6A-140 entered into service in 2012 on the Cessna Grand Caravan EX and has since logged over 500,000 flight hrs. The increased TBO and HSI intervals were made possible by the substantiate condition of the engines at overhaul and the proven performance and reliability of the PT6A engine family. SIL PT6A-259 – PT6A-140 Time Between Overhaul
Cessna has begun to transition their technical Publications portal from Cescom to the new and improved 1View portal. 1View includes technical publications, data and documents for all three Textron Aviation brands Beechcraft, Cessna and Hawker. The site houses an all-new web-based viewer that combines the best functionality of the well-known Cesview and IML libraries, with many new and improved features. The web-based viewer also includes flight information alongside the maintenance and parts documents. An extensive, searchable Service Information library is available at no charge to provide the latest information for your airplane. Cessna plans to discontinue Cesview in the coming weeks so hurry and register for 1View. http://bit.ly/2jLkoCZ
McCauley recently received FAA certification for a new four blade propeller for the Caravan EX. The new propeller will have significant performance improvements over the standard 3 blade propeller and longer times between overhaul which will reduce operating cost.
Continental Motors Group has increased the time between replacement (TBR) of its diesel CD-100 series engines to 2,100 hours. This lifetime increase affects all CD-135 and CD-155 engines manufactured from Dec. 1, 2015, incorporating revision status 2 design changes. Through key improvements, continuous testing and field experience, both the CD-135 and CD-155 are now rated to a TBR of 2,100 hours. The TBR of the CD-155 increases from 1,200 hours to 2,100 hours, the CD-135 increased from 1,500 to 2,100 hours.