Beechcraft Model 58 Baron Instrument Air Water Contamination Upon opening the instrument air, pressure regulator and manifold check valve assembly for inspection, heavy corrosion of the ferrous components were noted. 288
Failed, Leaking, Chafed
Upon opening the instrument air, pressure regulator and manifold check valve assembly for inspection, heavy corrosion of the ferrous components were noted. Large rust particles were contaminating instruments. The submitter recommends Beechcraft develop a service bulletin or kit installing an inline filter after the instrument air regulator but before the instruments.
Key Takeaways:
- Beechcraft Model 58 Barons experienced issues with instrument air system corrosion leading to instrument contamination and a high failure rate of landing light switches, some involving smoke and burning.
- A Bellanca 17-30A Viking suffered a nose landing gear collapse on touchdown due to a fatigue failure in a linkage bearing rod-end, causing an off-runway excursion.
- Engine component failures included chafed and leaking fuel injector lines on a Continental IO-550-N, and two Aero Classic oil coolers failing prematurely after installation (at 23.6 and 53 hours respectively).
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