Lombardo covers business aviation maintenance-related issues. He is also a writer and on-air reporter for AINtv. He has over 3000 articles published and is the author of several books on aircraft systems for pilots and on the topic of flight simulation.
He holds undergraduate and graduate degrees in education from the University of Illinois, has taught aviation for over 35 years in industry and as a university professor and academic dean at three different universities. He is also a frequent seminar and after-dinner motivational speaker.&nbsp;
Lombardo holds an A&amp;P Certificate, ATP, CFI and Ground Instructor ratings. He was a corporate pilot and was a research pilot and flight instructor at the University of Illinois. An FAA Safety Counselor for over 25 years, he was one of the original 13 Counselors appointed to the FAA’s Airworthiness Safety Program for maintenance technicians.&nbsp;

Contributor

David A. Lombardo

The FAA is adopting an <a href="http://www.gpo.gov/fdsys/pkg/FR-2013-07-02/html/2013-15402.htm">airworthiness directive</a> (AD) for certain Learjet 60s. The AD was prompted by a report of a high-speed rejected takeoff caused by all four main landing gear (MLG) tires blowing out during the takeoff roll.


This AD requires extensive parts replacement, including installing new rigid hydraulic tube assemblies to the MLG struts; installing a new MLG squat switch bracket; modifying the MLG squat switch wire harness; modifying the MLG anti-skid wheel transducer electrical wire harnesses; and routing and securing the anti-skid wheel and squat switch electrical wire harnesses to the MLG strut assembly.


According to the AD, the purpose is to prevent failure of the braking system or adverse operation of the spoiler and thrust reverser system due to external damage, particularly from tire failure, which could result in loss of control of the airplane.


The FAA estimates the cost of compliance for each of the 275 U.S.-registered aircraft it affects could run as high as $38,000. Some of the costs may be covered under warranty. The AD is effective August 6.


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News and issues about aviation maintenance, repair and overhaul (MRO), covering all segments of the aviation industry; and modifications for aircraft and engines. Subjects include product support of aircraft, engines and avionics, MRO company mergers, acquisitions, announcements and personnel, Airworthiness Directives, Supplemental Type Certificate approvals and other topics.

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