Criteria for Operational Approval of Auto Guidance Systems
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Criteria for Operational Approval of Auto Guidance Systems

Filetype[PDF-285.48 KB]


  • English

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    • NTL Classification:
      NTL-AVIATION-Aviation Laws and Regulations
    • Abstract:
      This advisory circular (AC) states an acceptable means, but not the only means,

      for obtaining operational approval of the initial engagement or use of an Auto

      Flight Guidance System (AFGS) under Title 14 of the Code of Federal Regulations

      (14 CFR) part 121, section 121.579(d); part 125, section 125.329(e); and part

      135, section 135.93(e) for the takeoff and initial climb phase of flight. The

      purpose of this AC is to take advantage of technological improvements in the

      operational capabilities of autopilot systems, particularly at lower altitudes.

      This AC complements a rule change that would allow the use of an autopilot,

      certificated and operationally approved by the FAA, at altitudes less than 500

      feet above ground level in the vertical plane and in accordance with sections

      121.189 and 135.367, in the lateral plane. The criteria contained in this AC

      are applicable to operators using commercial turbojet and turboprop aircraft

      holding Federal Aviation Administration (FAA) operating authority issued under

      SFAR 38-2 and 14 CFR parts 119, 121, 125, and 135. The FAA may approve the AFGS

      operation for the operators under these parts, where necessary, by amending the

      applicant's operations specifications (OPSPECS).

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