Squawk Box: 03/04
The following information is derived from the FAAs Service Difficulty Reports and Aviation Maintenance Alerts.
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Sparring Over Spars
The FAA has reopened public input for a pair of proposed airworthiness directives aimed at preventing wing spar failure in Cessna 401, 402, 411 and 414 series airplanes.The proposed ADs would require repetitive inspections on the wing spar caps and to incorporate a spar strap modification on each wing spar of certain airplanes. Owners groups are concerned that the cost of the required repairs will be economically unviable.The FAA plans to hear public comments in early March to debate the issue and to explore alternative solutions…