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Purpose of This Notice. This notice is issued for immediate safety of flight and instructs Flight Standards District Offices (FSDO), Operations aviation safety inspectors (ASI), and principal operations inspectors (POI) to place increased significance on ground operations performance during all pilot flight checks and certification flights. With respect to ground operations, this includes, but is not limited to knowledge testing on airport signs, lighting, markings, flightcrew coordination, and adherence to taxi clearances. This notice additionally aims to prevent wrong runway takeoffs by identifying known contributing factors and by promoting pertinent operating procedures and training efforts for pilots and flight engineers.