14 CFR 27.653 - Pressure venting and drainage of rotor blades.

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§ 27.653 Pressure venting and drainage of rotor blades.
(a) For each rotor blade—
(1) There must be means for venting the internal pressure of the blade;
(2) Drainage holes must be provided for the blade; and
(3) The blade must be designed to prevent water from becoming trapped in it.
(b) Paragraphs (a)(1) and (2) of this section does not apply to sealed rotor blades capable of withstanding the maximum pressure differentials expected in service.
[Amdt. 27-2, 33 FR 963, Jan. 26, 1968]

Title 14 published on 2014-01-01

no entries appear in the Federal Register after this date.

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United States Code

Title 14 published on 2014-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 14 CFR 27 after this date.

  • 2014-07-31; vol. 79 # 147 - Thursday, July 31, 2014
    1. 79 FR 44320 - Interest in Restructure of Rotorcraft Airworthiness Standards
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Notice of Disposition of Comments.
      The docket is terminated as of July 31, 2014.
      14 CFR Parts 27 and 29