Separations

A technician submitted discrepancy reports for the same problem in six different aircraft undergoing annual inspection. Aircraft included an F33A Bonanza, V35B Bonanza, A36 Bonanza, a Model 55 Baron and two B95 Travel Airs. Of these six aircraft, total times ranged from 3144.9 to 5255.1 hours. The FAA noted, "This is awfully good anecdotal evidence arguing for close attention to these actuation attach points after a couple thousand hours."

Key Takeaways:

• Recurring cracked flap leading edge nose ribs were found on multiple Beechcraft models (Bonanza, Baron, Travel Air) after several thousand flight hours.
• FAA analysis indicates fatigue failure of main landing gear spring struts on various Cessna 100, 200, 336/337 series, mandating visual inspections after 1400 hours and regularly thereafter, especially for aircraft with skis or operating on unimproved runways.
• A Cessna 208B experienced repeat issues with leaking brake caliper castings due to porosity, and a Cessna 172S had a fuel line worn to the point of leaking due to chafing from improper installation.
• A Diamond DA40F experienced an in-flight cabin door separation caused by a bent attachment clip leading to the aft latch rod detaching.

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