Squawk Box

November 2011 Issue

Failed And Worn

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.

Inspection of the sidewall structure revealed a failed crosstie at fuselage station 227.125. The part cracked fully in two pieces and is deformed from its original flat shape, apparently from compression. Two rivets immediately above the break have failed. No other crossties (p/n 101-420013-1122) display any deformation, cracking or evidence of preload. Part Total Time: 8186 hours

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