18.57.010   Purpose and applicability.
   A.   Purpose. The purpose of this chapter is to:
      1.   Protect persons and property within the environs of airports;
      2.   Provide for aircraft safety in the use of airports;
      3.   Regulate land use to ensure compatibility with airports and the long-term viability of airport operations; and
      4.   To protect and accommodate the needs of present and future military missions of Davis-Monthan Air Force Base based on local community, state, and national interests.
   B.   Applicability.
      1.   This chapter establishes height and land use overlay zones for the environs of Tucson International Airport, Ryan Field, Davis-Monthan Air Force Base and Pinal Airpark.
      2.   Additionally, this chapter provides establishment standards and procedures for private airports, general aviation airstrips and ultralight facilities.
      3.   For a change of use of an existing structure located within Noise Control Zones A or B (NCZ-A or NCZ-B) of the Davis-Monthan Air Force Base airport environs on or after January 16, 2009, the noise level reduction requirements and performance standards established by the respective Section 18.57.031(E)(4) (NCZ-A) and (E)(5) (NCZ-B) apply to the affected areas of the existing structure up to and including the entire structure if the use of the existing structure is changed to one or more permitted uses which require noise level reduction.
      4.   Residential uses legally existing within Noise Control Zones A or B of the Davis-Monthan Air Force Base airport environs on January 16, 2009 may expand only if the habitable areas of new construction conform to requirements for noise level reduction.
      5.   If the gross-floor area of a nonresidential structure or use legally existing within Noise Control Zones A or B of the Davis-Monthan Air Force Base airport environs on January 16, 2009 is expanded by less than fifty percent, the requirements for noise level reduction, if applicable, apply only to the area of expansion. If the gross floor area of the nonresidential structure or use is expanded by fifty percent or more, the requirements for noise level reduction, if applicable, apply to the entire nonresidential structure or use.
(Ord. 2008-118 § 3 (part), 2008; Ord. 1986-188 § 1 (part), 1986)