Regulation Text
(a) This subpart prescribes rules governing the maintenance, preventive maintenance, and alterations of U.S.-registered civil aircraft operating within or outside of the United States.
(b) Sections 91.405, 91.409, 91.411, 91.417, and 91.419 of this subpart do not apply to an aircraft maintained in accordance with a continuous airworthiness maintenance program as provided in part 121, 129, or §§ 91.1411 or 135.411(a)(2) of this chapter.
(c) Sections 91.405 and 91.409 of this part do not apply to an airplane inspected in accordance with part 125 of this chapter.
[Docket 18334, 54 FR 34311, Aug. 18, 1989, as amended by Amdt. 91-267, 66 FR 21066, Apr. 27, 2001; Amdt. 91-280, 68 FR 54560, Sept. 17, 2003]
The short answer
(14 CFR § 91.401) defines the scope of Subpart E: it sets the rules for maintenance, preventive maintenance, and alterations of U.S.-registered civil aircraft operating inside or outside the United States, with stated exceptions for aircraft on continuous airworthiness or Part 125 programs.
Research Notes
Common Questions
Which aircraft does Subpart E maintenance apply to?
It applies to U.S.-registered civil aircraft, whether operated within or outside the United States.
“This subpart prescribes rules governing the maintenance, preventive maintenance, and alterations of U.S.-registered civil aircraft operating within or outside of the United States.” — 14 CFR § 91.401(a)
Are there aircraft exempt from parts of Subpart E?
Yes. Sections 91.405, 91.409, 91.411, 91.417, and 91.419 do not apply to an aircraft maintained under a continuous airworthiness maintenance program per part 121, 129, or §§ 91.1411 or 135.411(a)(2). Sections 91.405 and 91.409 also do not apply to an airplane inspected under part 125.
“Sections 91.405, 91.409, 91.411, 91.417, and 91.419 of this subpart do not apply to an aircraft maintained in accordance with a continuous airworthiness maintenance program as provided in part 121, 129, or §§ 91.1411 or 135.411(a)(2) of this chapter.” — 14 CFR § 91.401(b)
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