Summary
We propose to adopt a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes. This proposed AD was prompted by the discovery of circuit breakers of unsuitable strength that fail to protect the system from overcurrent. This proposed AD would require replacing certain circuit breakers. We are proposing this AD to address the unsafe condition on these products.