The FAA is adopting an airworthiness directive (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.
Enstrom and the FAA have published separate alert notices strongly urging operators of Model 480 turbine helicopters to “immediately” remove any elastomeric dampers and replace them with hydraulic dampers. The action follows a ground-resonance incident on August 5 in Goshen, Ind.
PMA landing gear struts from Aerometals (Booth No. 2221) for MD 500 series helicopters have been excluded from a January 8 FAA Notice of Proposed Rule Making that would require inspection, rework or replacement of the forward and aft struts on the MD 500N. The proposal, which also covers the MD 300 and OH-6A, was prompted by five reported MD helicopter landing gear strut failures.
Learjet 25B, Cedar Rapids, Iowa, Dec. 20, 2004–The NTSB blamed the accident on loss of directional control due to the failure of the nosegear strut seal, which prevented the gear from centering. It also mentioned as a factor the berm with which the airplane collided.