Transportation Department, Federal Aviation Administration
The FAA is adding a new load condition to the design standards for transport category airplanes. The new load condition requires such airplanes to be designed to withstand the loads caused by rapid reversals of the rudder pedals, and applies to transport category airplanes that have a powered rudder control surface or surfaces. This rule is necessary because accident and incident data show that pilots sometimes make rudder reversals during flight, even though such reversals are unnecessary and discouraged by flightcrew training programs. The current design standards do not require the airplane structure to withstand the loads that may result from such reversals. If the loads on the airplane exceed those for which it is designed, the airplane structure may fail, resulting in catastrophic loss of control of the airplane. This final rule aims to prevent structural failure of the rudder and vertical stabilizer that may result from these rudder reversals.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration 14 CFR Part 25 [Docket No.: FAA-2018-0653; Amdt. No. 25-147] RIN 2120-AK89 AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: The FAA is adding a new load condition to the design standards for transport category airplanes. The new load condition requires such airplanes to be designed to withstand the loads caused by rapid reversals of the rudder pedals, and applies to transport category airplanes that have a powered rudder control surface or surfaces. This rule is necessary because accident and incident data show that pilots sometimes make rudder reversals during flight, even though such reversals are unnecessary and discouraged by flightcrew training programs. The current design standards do not require the airplane structure to withstand the loads that may result from such reversals. If the loads on the airplane exceed those for which it is designed, the airplane structure may fail, resulting in catastrophic loss of control of the airplane. This final rule aims to prevent structural failure of the rudder and vertical stabilizer that may result from these rudder reversals. DATES: Effective January 23, 2023. ADDRESSES: For information on where to obtain copies of rulemaking documents and other information related to this final rule, see “How To Obtain Additional Information” in the SUPPLEMENTARY INFORMATION section of this document. FOR FURTHER INFORMATION CONTACT: For techn…
Other Federal Register documents from the same docket.
Citation: 87 FR 71203
