He "felt impacts on the left side." After landing he discovered he'd hit trees and fractured the
wing spar.
Most recently, the FAA has published a proposed airworthiness directive (AD) that would require inspecting each main
wing spar of a wide range of Piper airplanes.
Unless you can show that the
wing spar failing--the wing coming off--is less than one in a billion, it's "likely" to happen.
The first example component is the use of composite forming technology to create a
wing spar, GKN have developed the use of composite manufacturing technology in the form of AFP to produce large structural composite components [53].
WASHINGTON, Safar 06, 1437, November 18, 2015, SPA -- Pentagon testers for the F-35C reported a crack on the
wing spar of a test aircraft, prompting contractor engineers to formulate a solution, UPI reported.
Burnage says: "With conventional techniques, on something like a
wing spar as much as 90% can be machined away.
The
wing spar, cockpit, engine housing and equipment parts were all designed with weight in mind.
The aircraft's production began with the loading of the 97-foot (29.5 metre)
wing spar -- the main support structure for the wing -- into a giant tool that automatically drills, measures and installs more than 5,000 fasteners into the spar.
Production began with loading of the 97-foot (29.5 m)
wing spar -- the main support structure for the wing -- into a giant tool that automatically drills, measures and installs more than 5,000 fasteners into the spar.
According to Valair's president, Jeff Snyder, this is the first time that the forward and rear
wing spar caps have been replaced on a Beech 1900.
The assembly jigs that were supplied did not meet the requirements, there was mismatch in the kits/ components supplied, there were defects in major assemblies like the
wing spar etc.
The repairs include replacing five of the nine lower wing planks and the aft lower
wing spar, which will extend the aircraft's service life by eight to ten years.
