The FAA has released a mandatory safety directive, effective March 21, that reduces the maximum operating altitude of Eclipse Aerospace EA500 jets from 37,000 feet to 30,000 feet in response to reported engine problems. The AD affects the whole fleet of 259 EA500s that use Pratt & Whitney Canada PW610F-A engines. Operators are required to make the change to the limitations section of the airplane flight manual. The FAA says that hard carbon buildup on the static vanes of the engines has resulted in at least six reported incidents of engine surges. Pilots may be forced to respond to those surges by decreasing the power of the affected engine. According to the FAA, that "could result in flight and landing under single-engine conditions" and, if present in both engines, it could require dual engine shutdown.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/faa-lowers-ceiling-on-eclipse-jets