We propose to adopt a new airworthiness directive (AD) for certain Learjet Model 60 airplanes. This proposed AD would require revising the Tire-Servicing section of the airplane maintenance manual and revising the Tires Limitation section of the airplane flight manual to incorporate revised procedures for servicing tires and checking for proper tire inflation. This proposed AD results from a report of the main landing gear tires blowing out during a takeoff roll. We are proposing this AD to prevent tire failure, which could result in failures of the braking and thrust reverser systems. In a critical phase of operation such as takeoff, loss of airplane control may result.
Agency Contact: Don Ristow, Aerospace Engineer, Mechanical Systems and Propulsion Branch, ACE-116W, FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid- Continent Airport, Wichita, Kansas 67209; telephone (316) 946-4120; fax (316) 946-4107.
This is a proposed regulation. Comments were due on July 13, 2009.