Q: We have a Piper Navajo PA-31-350 that has not flown in three to four years, but maintenance has been done on it continually. During intervals the engines were started and run up.
What are the requirements as to the engines (or the aircraft itself) if it has not flown for three or four years? Are there any Service Bulletins or Airworthiness Directives that I will need to look at?
I know the lifespan of the engines are either 1,800 or 2,000 hours, depending on maintenance provided, or 12 years, whichever comes first — I need some clarification. [Read more…]