14 CFR 25.445 - Auxiliary aerodynamic surfaces.

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There are 12 Updates appearing in the Federal Register for 14 CFR Part 25. View below or at eCFR (GPOAccess)
§ 25.445 Auxiliary aerodynamic surfaces.
(a) When significant, the aerodynamic influence between auxiliary aerodynamic surfaces, such as outboard fins and winglets, and their supporting aerodynamic surfaces, must be taken into account for all loading conditions including pitch, roll, and yaw maneuvers, and gusts as specified in § 25.341(a) acting at any orientation at right angles to the flight path.
(b) To provide for unsymmetrical loading when outboard fins extend above and below the horizontal surface, the critical vertical surface loading (load per unit area) determined under § 25.391 must also be applied as follows:
(1) 100 percent to the area of the vertical surfaces above (or below) the horizontal surface.
(2) 80 percent to the area below (or above) the horizontal surface.
[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-86, 61 FR 5222, Feb. 9, 1996]

Title 14 published on 2015-01-01.

The following are only the Rules published in the Federal Register after the published date of Title 14.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2015-05-27; vol. 80 # 101 - Wednesday, May 27, 2015
    1. 80 FR 30132 - Special Conditions: Bombardier Aerospace, Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Operation Without Normal Electrical Power
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Final special conditions; request for comments.
      This action is effective on Bombardier Aerospace on May 27, 2015. We must receive your comments by June 26, 2015.
      14 CFR Part 25

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United States Code

Title 14 published on 2015-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 14 CFR Part 25 after this date.

  • 2015-05-27; vol. 80 # 101 - Wednesday, May 27, 2015
    1. 80 FR 30132 - Special Conditions: Bombardier Aerospace, Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Operation Without Normal Electrical Power
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Federal Aviation Administration
      Final special conditions; request for comments.
      This action is effective on Bombardier Aerospace on May 27, 2015. We must receive your comments by June 26, 2015.
      14 CFR Part 25