Because corporate flight crews operate sophisticated aircraft in an ever-changing environment, a periodic review of the aviation department operations manual is a must. While some factors and considerations may be new, many specifics essentially remain the same but may require some minor adjustments.
Following a highly publicized corporate aviation accident in 1977, the National Transportation Safety Board gave impetus for the development of corporate aviation department operations manuals. NTSB said that this accident could have been prevented had there been written company procedures, including such policies as to when and how an instrument approach should be flown and under what conditions a flight should be diverted to an alternate airport. NTSB specifically recommended that an operations manual should standardize pilot and cockpit procedures for the entire flight.