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  4. Part 91
  5. § 91.405
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14 CFR · Part 91

14 CFR § 91.405

Maintenance required.

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Read in Subpart E
Part 91 Contents
  • Special Federal Aviation Regulation No. 50-2: Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ
  • Special Federal Aviation Regulation No. 60: Air Traffic Control System Emergency Operation
  • Special Federal Aviation Regulation No. 97: Special Operating Rules for the Conduct of Instrument Flight Rules (IFR) Area Navigation (RNAV) Operations using Global Positioning Systems (GPS) in Alaska
  • Special Federal Aviation Regulation No. 104: Prohibition Against Certain Flights by Syrian Air Carriers to the United States
  • Subpart A: General
  • Subpart B: Flight Rules
  • Subpart C: Equipment, Instrument, and Certificate Requirements
  • Subpart D: Special Flight Operations
  • Subpart E: Maintenance, Preventive Maintenance, and Alterations
  • Subpart F: Large and Turbine-Powered Multiengine Airplanes and Fractional Ownership Program Aircraft
  • Subpart G: Additional Equipment and Operating Requirements for Large and Transport Category Aircraft
  • Subpart H: Foreign Aircraft Operations and Operations of U.S.-Registered Civil Aircraft Outside of the United States; and Rules Governing Persons on Board Such Aircraft
  • Subpart I: Operating Noise Limits
  • Subpart J: Waivers
  • Subpart K: Fractional Ownership Operations
  • Subpart L: Continued Airworthiness and Safety Improvements
  • Subpart M: Special Federal Aviation Regulations
  • Subpart N: Mitsubishi MU-2B Series Special Training, Experience, and Operating Requirements
  • Appendix A to Part 91: Category II Operations: Manual, Instruments, Equipment, and Maintenance
  • Appendix D to Part 91: Airports/Locations: Special Operating Restrictions
  • Appendix E to Part 91: Airplane Flight Recorder Specifications
  • Appendix F to Part 91: Helicopter Flight Recorder Specifications
  • Appendix G to Part 91: Operations in Reduced Vertical Separation Minimum (RVSM) Airspace

Each owner or operator of an aircraft—

(a)

Shall have that aircraft inspected as prescribed in subpart E of this part and shall between required inspections, except as provided in paragraph (c) of this section, have discrepancies repaired as prescribed in part 43 of this chapter;

(b)

Shall ensure that maintenance personnel make appropriate entries in the aircraft maintenance records indicating the aircraft has been approved for return to service;

(c)

Shall have any inoperative instrument or item of equipment, permitted to be inoperative by § 91.213(d)(2) of this part, repaired, replaced, removed, or inspected at the next required inspection; and

(d)

When listed discrepancies include inoperative instruments or equipment, shall ensure that a placard has been installed as required by § 43.11 of this chapter.

Referenced By

Interpretations of This Section (7)

  • Peri (Aircraft Electronics Association), 2018
  • Francis De Joseph, 2017
  • Nkugba, 2016
  • Easter (Precision Design), 2016
  • Hochberg, 2015
  • Siilats, 2015
  • Willkie (Department of Commerce), 1990

Advisory Circulars (5)

  • AC 39-7D
  • AC 43-11
  • AC 43-9D
  • AC 61-98E
  • AC 91-67A

Documents that cite this section, found in their catalog metadata or text. Listed by date, not by significance.

Regulations Referenced

14 CFR Part 4314 CFR 91.21314 CFR 43.11

Reflects the eCFR edition current as of July 6, 2026. Retrieved from ecfr.gov on July 17, 2026.

Primary Source

  • Official Source (14 CFR · Part 91)