Cessna 300/400 Series Corroded Trim Tab Screws A repair station states it has begun removing the four screws attaching the elevator trim tab horn to the trim tab to inspect them for corrosion at every annual inspection performed on 300/400 series Cessnas. The facility reports finding numerous screws corroded almost in half; there is no way to inspect these screws (p/n AN515-8R26 and MS35206-251) without removing them. Part Total Time: (unknown). Diamond DA20-A1 Backwards ELT Installation A repair station technician reports finding an ELT (p/n EBC-0502) installed backwards when removing it from the aircraft for replacement: The direction of flight arrow was pointing aft. This particular installation is located in the baggage compartment-a pilot can slide it out of its mount and reinstall it backwards. Part Total Time: (unknown). Piper PA23-160 Failed Main Gear Drag Link 288
Corrosion And Chafing
A repair station states it has begun removing the four screws attaching the elevator trim tab horn to the trim tab to inspect them for corrosion at every annual inspection performed on 300/400 series Cessnas. The facility reports finding numerous screws corroded almost in half; there is no way to inspect these screws (p/n AN515-8R26 and MS35206-251) without removing them.
Key Takeaways:
- Aviation reports detail critical component issues across various aircraft, including severely corroded Cessna trim tab screws and fatigue failure of a Piper PA23 main gear drag link exacerbated by corrosion.
- Other significant findings include a Diamond DA20-A1 ELT installed backwards and a cracked engine mount on a Piper PA28R-201 without reported hard landings.
- A Piper PA31T experienced a hydraulic leak from a line chafed in an area not normally inspected, emphasizing the need for comprehensive maintenance and inspection beyond routine access points.
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