Aircraft Maintenance Technology

NOV-DEC 2013

The aircraft maintenance professional's source for technological advancements, maintenance alerts, news, articles, events, and careers

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RECIP TECHNOLOGY using a flash light and mirror or even a borescope in difficult-to-see places. If you see signs of corrosion, clean and treat the area immediately. In the last year we have disassembled and repaired three Cessna wings for corrosion on the front spars and the leading edges at the lower lap joint, and I have two more in the shop now. Other areas to pay particular attention to are areas with dissimilar metals such as the steel fittings on the aluminum flight controls on Piper aircraft and foam-filled trailing edges on some Cessna controls. Another trend that I have noticed in the last year is cylinder compression failure on large bore engines. In the past few years there have been several bulletins addressing the issue of low compression on fairly new cylinders and even stated in one bulletin that sometimes a compression reading slightly below the minimum, according to the aircraft maintenance manuals, may still be airworthy. I just want to say that we have had a larger than normal volume of failed cylinders in the last year and in each case the cylinders were pulled and found to We're very big on small parts. have cracks or wear that was out of limits. Many of these cylinders only had 300 or 400 hours on them. I would encourage anyone who is having issues with engine compression being border-line to consider pulling the cylinder for further investigation. A great resource Your local FBO is a great place to work, a great place to take your aircraft, or even a great place to just get advice. I believe the IAs that run these FBOs are the only people you can go to with your general aviation aircraft that can probably repair anything that is broke. They can answer any question that you may have regardless if it is concerning operating, repairing, or regulatory issues. No one can answer every question about every aircraft but the IA will be your best shot. If you are looking for a career opportunity where you can learn to work on every part of the aircraft and possibly get the training required for your A&P; ticket or even your IA endorsement, the FBO is the place to go. AMT New Straight-Handle Electric Shears & Nibblers KL-2030 18 Gauge Long Neck Nibbler KL-2040 13 Gauge Throatless Shear Long known as the industry leader in PMA carbon brushes, we have expanded our market and product offerings to include our new line of PMA bearings and other products for a variety of aircraft motor applications. We work closely with our customers to identify potential replacement part needs and have the ability to move quickly on a range of new products from design to PMA. 345 Rt. 17, Hasbrouck Heights, NJ 07604 201-288-8877 • Fax: 201-288-7356 • email: mirajcorp@aol.com • www.mirajcorp.com PMA DESIGN, MANUFACTURE AND SALES. AviationPros.com/company/10134654 36 November/December 2013 AviationPros.com/company/10134514 Aircraft Maintenance Technology • www.AviationPros.com • www.AMTSociety.org

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