Critical Rescue and Fire Fighting Access Area 1 (CRFFAA)
Critical Rescue and Fire Fighting Access Area 1 (CRFFAA) : The rectangular area that surrounds a runway within which aircraft movements can be expected to occur on airports and whose width extends 150 m (500 ft) from each side of the runway centerline and whose length is 1000 m (3300 ft) beyond each runway threshold. NFPA 405, 2004 ed